Mixer Music Mixer User Guide
IMPORTANT Please read this manual carefully before using your mixer for the first time.
Harman International Industries Ltd. 2005 All rights reserved Parts of the design of this product may be protected by worldwide patents. Part No. ZM0336-01 Soundcraft is a trading division of Harman International Industries Ltd. Information in this manual is subject to change without notice and does not represent a commitment on the part of the vendor. Soundcraft shall not be liable for any loss or damage whatsoever arising from the use of information or any error contained in this manual. No part of this manual may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, electronic, electrical, mechanical, optical, chemical, including photocopying and recording, for any purpose without the express written permission of Soundcraft.
Harman International Industries Limited Cranborne House Cranborne Road POTTERS BAR Hertfordshire EN6 3JN UK Tel: +44 (0)Fax: +44 (0)http://www.ureidj.com

Contents

IMPORTANT SAFETY INSTRUCTIONS SAFETY SYMBOL GUIDE 4 6
INTRODUCTION INSTALLATION
GENERAL PRECAUTIONS MAINS INSTALLATION INITIAL WIRING CONSIDERATIONS AUDIO WIRING SHIELDING POINTS TO REMEMBER WORKING SAFELY WITH SOUND INSPECTION AND INSTALLATION MAKING ADJUSTMENTS AND FITTING SPARES MOVING THE REAR CONNECTOR PANEL REPOSITIONING THE RACK EARS ENABLING THE EXTERNAL MUTE FEATURE CONNECTING TO A TYPICAL SOUND SYSTEM
BLOCK DIAGRAM USING THE CONSOLE
MIC / DJ CHANNEL 1 DJ CHANNEL 1 REAR PANEL CONNECTORS CHANNELS 2-7 (2-4 ON 1603) CHANNELS 2-7 (2-4 ON 1603) REAR PANEL CONNECTORS MASTER SECTION EXTERNAL MUTE OPERATION
SPECIFICATIONS GLOSSARY WARRANTY
IMPORTANT SAFETY INSTRUCTIONS

Read these instructions.

Keep these instructions.

Heed all warnings.

Follow all instructions.
Do not use this apparatus near water.
Clean only with a dry cloth.
Do not block any ventilation openings. Install in accordance with the manufacturers instructions.
Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat.
Do not defeat the safety purpose of a polarised or grounding type plug. A polarised plug has two blades with one wider than the other. A grounding type plug has two blades and a third grounding prong. The wide blade or the third prong are provided for your safety. If the provided plug does not fit into your outlet, consult an electrician for replacement of the obsolete outlet
Protect the power cord from being walked on or pinched particularly at plugs, convenience receptacles and the point where they exit from the apparatus.
Only use attachments/accessories specified by the manufacturer.
Use only with the cart, stand, tripod, bracket or table specified by the manufacturer, or sold with the apparatus. When a cart is used, use caution when moving the cart/apparatus combination to avoid injury from tip-over.
Unplug this apparatus during lightning storms or when unused for long periods of time.
Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been damaged in any way, such as power-supply cord or plug is damaged, liquid has been spilled or objects fallen into the apparatus, the apparatus has been exposed to rain or moisture, does not operate normally, or has been dropped.
Note: It is recommended that all maintenance and service on the product should be carried out by Soundcraft or its authorised agents. Soundcraft cannot accept any liability whatsoever for any loss or damage caused by service, maintenance or repair by unauthorised personnel. WARNING: To reduce the risk of fire or electric shock, do not expose this apparatus to rain or moisture. Do not expose the apparatus to dripping or splashing and do not place objects filled with liquids, such as vases, on the apparatus. No naked flame sources, such as lighted candles, should be placed on the apparatus. Ventilation should not be impeded by covering the ventilation openings with items such as newspapers, table cloths, curtains etc. THIS APPARATUS MUST BE EARTHED. Under no circumstances should the safety earth be disconnected from the mains lead.
The mains supply disconnect device is the mains plug. It must remain accessible so as to be readily operable when the apparatus is in use.
If any part of the mains cord set is damaged, the complete cord set should be replaced. The following information is for reference only. The wires in the mains lead are coloured in accordance with the following code: Earth (Ground): Neutral: Live (Hot): Green and Yellow (US - Green/Yellow) Blue (US - White) Brown (US - Black)

As the colours of the wires in the mains lead may not correspond with the coloured markings identifying the terminals in your plug, proceed as follows: The wire which is coloured Green and Yellow must be connected to the terminal in the plug which is marked with the letter E or by the earth symbol. The wire which is coloured Blue must be connected to the terminal in the plug which is marked with the letter N The wire which is coloured Brown must be connected to the terminal in the plug which is marked with the letter L Ensure that these colour codes are followed carefully in the event of the plug being changed
This unit is capable of operating over a range of mains voltages as marked on the rear panel. NOTE: This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense. This Class A digital apparatus meets the requirements of the Canadian Interference-Causing Equipment Regulations. Cet appareil numrique de la Classe A respecte toutes les exigences du Rglement sur le matriel brouilleur du Canada.
For your own safety and to avoid invalidation of the warranty please read this section carefully.

SAFETY SYMBOL GUIDE

For your own safety and to avoid invalidation of the warranty all text marked with these symbols should be read carefully.
WARNINGS arrowhead The lightning flash with arrowhead symbol, is alert presence intended to alert the user to the presence of undangerous products insulated dangerous voltage within the products enclosure sufficient enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons.
CAUTIONS The exclamation point within an equilateral triangle alert presence is intended to alert the user to the presence of important important operating and maintenance (servicing) literature instructions in the literature accompanying the appliance.
NOTES important information Contain important information and useful tips on the operation of your equipment.
HEADPHONES SAFETY WARNING important information Contain important information and useful tips on headphone outputs and monitoring levels.

Recommended Headphone Impedance >= 200 Ohms.
INTRODUCTION INTRODUCTION

Welcome

Thanks for purchasing a UREI by Soundcraft 1603/1605 mixer, we hope you get just as much joy from using it as we got from designing it. The UREI by Soundcraft engineering team have 30 years experience in progressive audio design and take the utmost pride in the way we develop and manufacture products. Our consoles are in use 24 hours a day, every day all around the globe performing flawlessly by the most demanding industry professionals.

Registering Your Mixer

Please take this opportunity to register the purchase of your mixer with Urei By Soundcraft. You can do this by filling in the pre-paid postcard included in the packaging, or by going online to www.ureidj.com/registration.
Urei by Soundcraft recommends AKG Professional Dj Headphones. Please visit www.akg.com/dj for more information.
INSTALLA ALLATION INSTALLATION
The 1605/1603 is ruggedly constructed with the highest quality components. As such, it should provide years of trouble free use with normal care. All parts used are conservatively rated for their application, and workmanship meets UREI by Soundcrafts rigid standards.
NO SPECIAL PREVENTIVE MAINTENANCE IS REQUIRED, AND (WITH THE EXCEPTION OF THE PRE-TRIM ATTENUATORS) THERE ARE NO INTERNAL SERVICE ADJUSTMENTS.

GENERAL PRECAUTIONS

Avoid storing or using the mixing console in conditions of excessive heat or cold, or in positions where it is likely to be subject to vibration, dust or moisture. Do not use any liquids to clean the fascia of the unit: a soft dry cloth is ideal. Avoid using the console close to strong sources of electromagnetic radiation (e.g. video monitors, high-power electric cabling): this may cause degradation of the audio quality due to induced voltages in connecting leads and chassis.
Caution! In all cases, refer servicing to qualified personnel. Handling and Transport
The console is supplied in a strong carton. If it is necessary to move it any distance after installation it is recommended that this packing is used to protect it. Be sure to disconnect all cabling before moving. If the console is to be regularly moved we recommend that it is installed in a foam lined flightcase. At all times avoid applying excessive force to any knobs, switches or connectors.

WORKING SAFELY WITH SOUND
Although your new console will not make any noise until you feed it signals, it has the capability to produce sounds which when monitored through an amplifier or headphones can damage hearing. Always turn amplifiers down when turning your console on or off. The table below is taken from the Occupational Safety & Health Administration directive on Occupational noise exposure (1926.52): PERMISSIBLE NOISE EXPOSURE DURATION PER DAY, HOURS 2 1.0.5 <0.25 SOUND LEVEL dBA SLOW RESPONSE 115
Conforming to this directive will minimise the risk of hearing damage caused by long listening periods. A simple rule to follow is the longer you listen the lower the average volume should be. Please take care when working with your audio - if you are manipulating controls which you dont understand (which we all do when we are learning), make sure your monitors are turned down. Remember that your ears are the most important tool of your trade, look after them, and they will look after you. Most importantly - dont be afraid to experiment to find out how each parameter affects the sound - this will extend your creativity and help you to get the best results.
Recommended Headphone Impedance >= 200 Ohms
INSPECTION AND INSTALLATION

UNPACKING AND INSPECTION

Your 1605/1603 was carefully packed at the factory, and the container was designed to protect the unit from rough handling. Nevertheless, we recommend careful examination of the shipping carton and its contents for any sign of physical damage which could have occurred in transit.
If damage is evident, do not destroy any of the packing material or the carton, and immediately notify the carrier of a possible claim for damage. Shipping claims must be made by the consignee.
The carton should contain: Model 1605/1603 Music Mixer. Mains Cable UREI Instruction Manual (this book). Warranty Card (the serial number tag is on the base panel of the Mixer). 2mm Allen key
ENVIRONMENTAL CONSIDERATIONS
The 1605/1603 Mixer will operate satisfactorily over a range of ambient temperatures from 0 C to +50C (+32F to +122F), and up to 80% non-condensing relative humidity. If the system is installed in an equipment rack, console or desk with high heat producing equipment (such as power amplifiers), adequate ventilation should be provided in order to assure longest component life. Also, while circuitry susceptible to hum pick-up is sufficiently shielded from moderate electromagnetic fields, installation should be planned to avoid mounting the system immediately adjacent to large power transformers, motors, etc.

POWERING

The 1605/1603 may be operated from 100-250V AC mains (50-60 Hz, single phase). BE SURE TO VERIFY LINE VOLTAGE BEFORE CONNECTING THE 1605/1603 TO THE MAINS. Please Note. The IEC mains connector is fitted with a retaining clip to prevent the mains lead from accidentally being pulled out during operation. To ensure that this clip will fit correctly, the lead supplied with the mixer must be used.

Removing The Fader Panel

To remove the top panel fascia proceed as follows: Pull off the cross-fader knob only (the channel faders are attached to the panel and will lift away with it).
Undo the 7 (1605) or 6 (1603) Allen screws using a 2mm Allen key. The fader panel can now be lifted clear of the subframe underneath. Take care not to bend the panel. Replacing The Channel Faders Using a 2mm Allen key undo and remove the 2 screws which secure the fader to the fader panel. Unplug the 8-pin connector, appying slight lateral force to the plug from side to side as you pull the plug from the socket. Plug the connector into the new fader. The connector is keyed so that it cannot be inserted the wrong way round. Carefully place the new fader back into the fader panel and secure with the screws removed earlier, DO NOT OVER-TIGHTEN THE SCREWS. Replacing The Cross- Fader Using a pozi-screwdriver undo and remove the screws which secure the fader mounting plate to the subframe. Carefully withdraw the fader, taking care not to damage the wiring harness that is attached to it. Unplug the 6-pin connector, wiggle the plug from side to side as you pull the plug from the socket. Plug the connector into the new fader. The connector is keyed so that it cannot be inserted the wrong way round. Carefully place the new fader back into the subframe and secure with the screws removed earlier, DO NOT OVER-TIGHTEN THE SCREWS. NOTE:Ensure the PCB extrusion is facing the channel faders when replacing the cross fader.
Replaceable Spares Part Numbers
RS2432 - Urei 1603/5 Crossfader RS2433 - Urei 1603/5 Channel Fader
MOVING THE REAR CONNECTOR PANEL
It is possible to move the rear connector panel from its factory default position to its alternative location underneath the console. This alternative position can make it easier to rack or furniture-mount the console. To move the rear connector panel proceed as shown in the following diagram.
REPOSITIONING THE RACK EARS

The rack ears are shipped fitted to the sides of the console, but they are upside-down with the ears tucked underneath the console. To reposition them to allow furniture/rack fitting proceed as follows: Note that the ears are not identical, there is left hand and a right hand ear. It is best to reposition one side completely before starting on the other one. Undo the 8 screws which hold the ear onto the side of the console. Rotate the ear so that it is level with the top of the console and is facing outwards. Replace the 8 screws. Repeat this operation for the other ear.
ENABLING THE EXTERNAL MUTE FEATURE
The factory default is that this feature is disabled. There is therefore no need to fit a shorting wire between the two n.c. (normally closed) contacts if you do not want to use this feature. To enable this feature the internal switch which shorts the two n.c. contacts must be opened. Before doing this ensure that the mains is switched off and the mains lead is removed from the mixer. Remove the rear panel as described in the instuctions above (moving the rear connector panel). This will allow access to the internal switch. The switch is located on a small pcb which is behind the red external mute connector, The switch must be depressed to enable the exturnal mute reature. The switch is a push-on, push-off type. Replace the rear connectior panel and secure with the screws removed earlier. A user-provided external-mute switch must be wired between the two rear panel contacts as shown.
CONNECTING TO A TYPICAL SOUND SYSTEM
The diagram below shows how to connect the different parts of a typical sound system.
BLOCK DIAGRAM BLOCK DIAGRAM

USING THE CONSOLE

MIC / DJ CHANNEL 1
The Channel 1 has a slightly different arrangement from the other input channels. There are four differences between this channel and all of the others. They are: The mic input to this channel can be made to form part of a venues emergency announcement system. The output from the channels fader is routed directly to the master output buses rather than the A or B buses. This means that the output is never routed through the cross-fader. When the mic input is selected the output can be blocked from being routed onto the DJ booth buses. If this mode of operation is selected it prevents howlround in the DJ booth. The EQ is a conventional +/-12dB 3-band type. THe channel must be activated using the ON switch.
This switch is a push on, push off type. When this switch is pushed down, the MIC input on the rear connector panel is selected. A LED* in the switch lights up to show that the mic is selected. When the switch is in the up position the phone or line input is selected (dependiing on the position of the phono/line switch). (Note: if the MIC switch is not selected this LED will flash if the eternal mute is activated. This shows that the mic is now routed to the master outputs.)

Phone/Line

This switch is a push on, push off type. It routes the signal from the line input when it is up, and the phono input when it is down, The LED in the switch lights when the phono input is selected. This switch only operates when the mic switch is in the up position.
This control gives a range adjustment of 32dB [+12/-20 for the Line/Phono and +20/-12 for the mic]. This allows you to adjust the input level to provide comparable levels on all of the channels faders.
The Aux pot controls the level of the channels signal which is sent to the aux buses. The signal can be pre-fade or post fade, depending upon the position of the Pre switch.
When the pre switch is in the down position, a pre-fade signal is sent to the Aux buses. This means that the signal level sent to the aux buses does not depend on the position of the channels fader. When the pre switch is in the up position, a post-fade signal is sent to the aux buses. This means that the signal level sent to the aux buses also depends on the position of the channels fader.
The three EQ controls allow you to apply a cut or boost to different parts of the audio-frequency spectrum. High This gives a cut or boost of +/-12dB to frequencies over 8kHz
Mid This gives a cut or boost of +/-12dB to frequencies centred at 600Hz Low This gives a cut or boost of +/-12dB to frequencies below 60Hz
When this switch is depressed its internal LED lights up. This indicates that the channels signal is being routed to the master section. The cue signal (see below) is not affected by the position of the ON switch.
Pressing this button routes the pre-fader signal to the headphones and meters. A LED in the switch indicates when Cue is selected.

Signal-Beat-Peak LED

This LED is green to show signal present, yellow flashes show the beat, and red shows overload.
The fader controls the level of the channels signal being fed to the master buses (left and right).
DJ CHANNEL 1 REAR PANEL CONNECTORS

DJ Mic XLR

Pin 1 Gnd Pin 2 Hot signal Pin3 Cold signal
DJ Mic Insert Point 1/4 jack
Tip Send signal Ring Return signal Sleeve Gnd

Booth defeat Switch

This switch is accessible via the hole in the rear panel. When it is set to on the dj mic will be routed to the booth outputs.

Phono Pair

This stereo pair of sockets has an RIAA filter for turntables. This filter is activated when the Phono/ Line switch, accessible via the hole in the rear panel, is in the phono position. This pair of sockets can be used for line level inputs if the switch is in the line position

Line Pair

This stereo pair of sockets is used for line level inputs. There is a boost of +14dB or cut of -10dB available via switches under the top fascia. These will be set by the installing engineer.
CHANNELS 2-7 (2-4 ON 1603)
This switch is a push on, push off type. When this switch is pushed down, the MIC input on the rear connector panel is selected. A LED in the switch lights up to show that the mic is selected. When the switch is in the up position the phono or line input is selected (dependiing on the position of the phono/line switch).

Phono/Line

The three EQ controls allow you to apply a cut or boost to different parts of the audio-frequency spectrum. High (Pass Filter) This gives from a full cut to a boost of +6dB to frequencies at or over 3.5kHz. Mid (Band Pass Filter) This gives a from a full cut to a boost of +6dB to frequencies between 300Hz-3.5kHz (bandwidth). Low (Pass Filter) This gives from a full cut to a boost of +6dB to frequencies at or below 300Hz. This isolator eq design gives an advantage over a conventional eq: the unity gain point is not at the centre of the pot travel. This gives the user more controln resolution over the cut part of the range, exactly where it is needed.

A/Master/B Switch

This 3-position switch routes the channels post-fader output signal to one of three pairs of stereo buses. If the Master position is selected the post-fader signal is routed diretly to the booth and master outputs. If the A or B position is selected then the output is routed via the cross fader.
This LED is green to show when a signal is present, yellow flashes show the beat, and red shows overload.
The fader controls the level of the channels signal being fed to the A/Master/B selector switch.

Rear Panel Connector connections
XLR INPUT & OUTPUT (3 pin female XLR) Pin 1..... Ground Pin 2..... Signal Hot Pin 3..... Signal Cold INSERT SEND and RETURN (1/4" TSR Jack) MIC 1 Only Tip...... Send Ring...... Return Sleeve...... Ground PHONO and 1/4 JACKS Tip...... Hot Sleeve...... Screen

Master/Booth Output

High Pass Filter..... 18dB/Octave @ 63Hz Output Impedance..... 75 ohms Recommended Load.... 600 ohms or greater Frequency Response.... +/- 1dB, 20Hz-20kHz Distortion.... < 0.05% THD, 20Hz-20kHz @ +16dbu Maximum Output.... +20dB into 600 ohms

Headphone Output

Output Impedance.... <40 ohms Recommended Load.... 150 ohms or greater Frequency Response... +0, -1dB, 20Hz-20kHz into 200 ohm load Distortion..... < 0.05% THD, 20Hz-20kHz @ +16dBu Maximum Output.... 190mW into 150 ohms

Mono Output

Output Impedance..... 75 ohms Recommended Load.... 2k ohms or greater Frequency Response.... +/- 1dB, 20Hz-20kHz Distortion..... < 0.05% THD, 20Hz-20kHz @ +16dBu Maximum Output.... +20dBu into 2k ohms

Effects Loop Output

Output Impedance.... 75k ohms Recommended Load.... 5k ohms or greater Frequency Response.... +/- 1dB, 20Hz-20kHz Distortion..... < 0.05% THD, 20Hz-20kHz @ +16dBu Maximum Output..... +20dB into 2k ohms
All channels routed at unity, mix at unity.... < -85dB Crosstalk (@1kHz)..... < -85dB

Channel Mute

Fader Cut-off (rel. 0 Mark)..... < -95dB FX Sends offness...... < -90dB
Input and Output Impedance
Mic Input...... 2k ohms Line Input..... 45k ohms Aux Input (Unbalanced RCA Phono).... 30k ohms Master/booth Output..... 75 ohms Aux Output..... 75 ohms Headphones Output.... 40 ohms

Maximum Output Levels

Insert Send Output.... +20dBu into 2k ohms Mix Output..... +20dBu into 600 ohms Aux Output..... +20dBu into 2k ohms Booth Output..... +20dBu into 600 ohms Headphones Output.... +20dBu into 300 ohms Headphones.... 190mW into 150 ohms

Dimensions/ weight

1605 Without rack ears.... 87.6(H) x 440(W) x 400(D) (mm) With rack ears.... 87.6(H) x 483(W) x 400(D) (mm) Weight..... 8.7kgs/ 19.1 lbs 1603 Without rack ears.... 87.6(H) x 338(W) x 400(D) (mm) With rack ears.... 87.6(H) x 381(W) x 400(D) (mm) Weight..... 7.5kgs/ 16.5 lbs

GLOSSAR OSSARY GLOSSARY

Amplitude: Attenuate: Attenuator: Auxiliary (Aux): Balanced, Unbalanced: Another term used for signal level. Reduce the signal level. A device which reduces the signal level. An independent mix derived from the channels for various functions. This can be set pre (before) or post (after) the channel fader. Refers to the type of input or output signal connection. An unbalanced connection has two signal carrying conductors, one of which is the cable shield. A balanced connection has three conductors, two for signal and a shield which is connected to earth. Because the signal conductors are at the same impedance and of opposite polarity they are better able to cancel and therefore reject interference and noise pickup. It is standard practice to use balanced connections for long cable runs, for example to amplifiers, or cables carrying sensitive or low level signals, for example microphones. A filter with a bell-shaped response for attenuation of frequencies either side of the centre frequency. Using the variable pitch controls on turntables/CD players to synchronise the rhythm track of two separate songs, so that the beat remains constant when smoothly cross-fading from one to the other.

Bandpass (BPF): Beat Mixing:
Beats Per Minute (BPM): The measurement of the rhythmic beat or tempo of the music. Booth: Cutting: Cartridge: The area, often enclosed, where the DJ operates. It is usually provided with local booth monitor loudspeakers. Moving the cross-fade control sharply from one side to the other, to cut u or pick out a sound, a hihat, kick drum etc, or to drop straight into another record. Also known as chopping. The pickup in a turntable. Uses a stylus to pick up vibrations from the record (vinyl) and convert this to electrical signals that feed the console. The cartridge is usually fitted to a removable headshell that plugs into the turntable arm. The harsh distorted sound that results when the signal hits the maximum level possible. The term used to describe the law of a fader, how quickly it responds as it is moved, or the amount of fade per unit of movement. The contour control associated with a fader lets the DJ tailor its response to suit the preferred mixing style. A horizontally operated fader for fading one music track in while fading the other out. Often used by the DJ for cutting and layering sounds while mixing. A monitor system provided for the DJ to check individual channel signals using headphones while lining up tracks ready to introduce into the mix. Connecting the output of one mixer to an input of another mixer. The unit of measurement for audio signal level. This is logarithmic to follow the response of the human ear. dB is a relative measurement to compare one level with another, for example gain from input to output. dBu is an absolute measurement referenced to a voltage standard where 0dBu = 0.775V rms. The console main outputs operate at 0dBu = 0 reading on the meters. dBV is a similar measurement but refers to a 1V standard. It is common for consumer equipment to operate a the standard of 10dBV (316mV). dBA refers to sound pressure level and is measured using the A scale that hears in the same way as the human ear. The difference expressed in dB between the highest and lowest signal levels possible. This is limited by the clipping level and residual noise floor respectively. The term for the electronic signal reference. This generally connects to the mains supply earth point and all cable shields and conductive equipment cases. It provides the return for the signal voltage within the equipment. It also ensures operator safety by removing the possibility of electric shock should the mains voltage touch any metal part.
Clipping: Contour (Law, Curve):
Cross-fader: Cue (Solo): Daisy-Chaining: dB (Decibel):
Dynamic Range: Earth (Ground):
Earth Loop (Ground Loop): The result when the equipment sees more than one path to the system earth. Current flows because a resistive loop susceptible to radio and mains interference is formed. In severe cases this can result in audible hum or buzz in the system. Breaking the loop by removing all but one path to earth usually solves the problem. EQ (Equaliser): Feedback: This provides cut or boost of selected frequencies (equalisation) for tonal shaping of the sound. Also known as howlround or ringing, this is the rapidly increasing tone produced when a microphone picks up its own signal from the speakers. It is usually a shrill and annoying squeal that should be quickly dealt with by repositioning the microphone or speakers, reducing mic gain or equalising the system to notch out the offending frequencies. This is the boost or attenuation applied to the source signal in the channel preamp stage to match it to the console operating level. For example, a large amount of gain is needed to match low microphone signals. It is set using the console meters. Gain is not used for level (volume) control. The amount of level available expressed in dB to handle peaks above the normal 0dB operating level. The measurement of frequency. The audio spectrum ranges from a low (bass) frequency of 20Hz to a high (treble) 20kHz. A filter that attenuates frequencies below the cut-off frequency. This is the audible noise that usually results from mains interference pickup, earth loops, bad interconnections and induced power supply and lighting fields. It is usually at mains frequency (50/ 60Hz) or a related harmonic. A technical term for the resistance of a signal conductor to ground. Low impedance (Low Z) usually refers to microphones of 200 ohms or less, and line signals typically less than 100 ohms. Low Z sources are less prone to interference pickup. Inputs are usually high impedance (High Z) so that one source can connect to more than one channel without signal loss. Note that the operating impedance of a connection is set by the impedance of the source, not that of the unconnected input. A signal processor that limits the maximum level possible by preventing the signal going over a predetermined threshold level. This is very useful in club installations where it is inserted between the console and house system amplifiers to prevent the DJ exceeding the maximum allowable volume. A filter that attenuates frequencies above the cut-off frequency. A single source with no stereo content, or the left and right stereo signals summed together as one. A mono signal which is the sum of the left and right parts of a stereo pair. To turn off the signal. Transform is a mute, or cut effect. Generic term for an unwanted signal. This may be residual electronic hiss, hum, buzz, clicks and pops. This is the term for the residual electronic noise produced by all powered audio equipment. It usually sounds like a constant hiss, although some equipment may suffer from residual hum as well. The response of a microphone which picks up sounds equally all round. Not suited to live vocal applications as they are more prone to feed back. Another term for attenuator. A control that adjusts the balance of the signal in the left and right speakers. A type of signal meter that has a very fast attack and slower release. This picks up the fast signal transients and holds them long enough for the operator to see the activity on the display. These meters typically use led (light emitting diode) displays. Abbreviation for phonograph as in turntable. Usually means RIAA equipped input when marked on console inputs. Can also refer to the RCA phono type connector found on turntables and CD players.

Headroom: Hz (Hertz): Highpass filter (HPF): Hum:

Impedance:

Limiter:
Lowpass filter (LPF): Mono: Mono Sum: Mute (Cut): Noise: Noise Floor: Omni-directional: Pad: Pan (Panoramic): Peak Meter:

Phono:

Polarity:
Sometimes erroneously referred to as phase this is the + / - sense of a balanced signal or loudspeaker connection. Reversed polarity should be avoided and checked for as it can cause uncomfortable phasing effects as the listener moves between the speakers. Polarity Reverse is often used to correct for wrongly wired cables and connectors. The signal is taken from a point in the circuit which is before the fader. The signal is taken from a point in the circuit which is after the fader. Record Industry of America Association, responsible for the long established equalisation standard that is applied to the signal produced by a turntable cartridge. Due to the physical limitations of vinyl reproduction the stylus produces a reasonable level high frequency signal but a much less lower level low frequency. An RIAA pre-amplifier compensates for this by attenuating the high and boosting the low frequencies. The way in which sound reflects and bounces around the room after the source is removed. This depends on the size and shape of the room as well as the materials such as carpets, curtains and clothing that absorb certain frequencies. This is a signal processor that connects to the console to artificially simulate the reverb effect. Parameters such as decay time, diffusion and amount of reverb can be controlled. Typically selected sounds are sent to the processor by turning up the channel post-fade aux sends. The processed (wet) signal is returned to the mix through a channel where it adds to the direct (dry) signal routed from the channel fader. Revolutions Per Minute. The measurement of turntable speed, 33, 45 and 78 RPM. Another performance effect popular with DJs. The channel signal is sent to a digital processor that samples (stores) a short duration of sound. The output is returned through a channel and replayed by pressing a trigger. Many samplers provide creative effects such as repeat and reverse. The UREI sampler is BPM activated. The art of rhythmically rocking a record back and forward on a turntable to manipulate the audio signal. Often combined with a differing cross fader technique to achieve different styles.
Pre-fade: Post-fade: RIAA:

Reverberation:

Reverb Effect:

RPM: Sampler:

Scratching:
Signal-to-Noise Ratio (SN): This is the difference expressed in dB between the normal 0dB operating level and the residual noise floor. It represents how far above the equipment hiss level the signal operates. A higher figure is better. Slip mat: Split Cue: Sub Bass: Tempo: Turntable: A fabric turntable mat positioned under the record so that the DJ can hold it stationary ready to let go for a fast start at the point cued. A facility to listen to the cue signal in one ear while keeping the program in the other. Used for matching the beat while cueing a new track. A loudspeaker designed to reproduce only very low frequency sound, typically from around 30 to 120Hz. A crossover is used to route only the low frequencies to the sub. The rhythmic beat of the music, usually referred to in BPM (Beats Per Minute). Otherwise known as a record deck this plays vinyl discs. It is common for the output of the cartridge to plug directly into the mixing console phono input which provides the RIAA equalisation required. The turntable usually has variable speed control so that the DJ can synchronise the beat between tracks. Voltage Controlled Amplifier: An audio gain element whose level is controlled by a remote DC voltage rather than through a fader or rotary control. VCA Cross fader functions as an audio cross fader but with the audio level controlled by a DC voltage produced by the fader. This voltage can be electronically filtered and is therefore able to remove the clicks, scratches and dropouts associated with worn audio faders. The professional standard 3 pin round connector used for microphone and other balanced connections. Equipment female sockets are for inputs, male for outputs.

WARRANTY

1 Soundcraft is a trading division of Harman International Industries Ltd. End User means the person who first puts the equipment into regular operation. Dealer means the person other than Soundcraft (if any) from whom the End User purchased the Equipment, provided such a person is authorised for this purpose by Soundcraft or its accredited Distributor. Equipment means the equipment supplied with this manual. If within the period of twelve months from the date of delivery of the Equipment to the End User it shall prove defective by reason only of faulty materials and/or workmanship to such an extent that the effectiveness and/or usability thereof is materially affected the Equipment or the defective component should be returned to the Dealer or to Soundcraft and subject to the following conditions the Dealer or Soundcraft will repair or replace the defective components. Any components replaced will become the property of Soundcraft. Any Equipment or component returned will be at the risk of the End User whilst in transit (both to and from the Dealer or Soundcraft) and postage must be prepaid. This warranty shall only be available if: a) the Equipment has been properly installed in accordance with instructions contained in Soundcraft's manual; and b) the End User has notified Soundcraft or the Dealer within 14 days of the defect appearing; and c) no persons other than authorised representatives of Soundcraft or the Dealer have effected any replacement of parts maintenance adjustments or repairs to the Equipment; and d) the End User has used the Equipment only for such purposes as Soundcraft recommends, with only such operating supplies as meet Soundcraft's specifications and otherwise in all respects in accordance Soundcraft's recommendations. Defects arising as a result of the following are not covered by this Warranty: faulty or negligent handling, chemical or electro-chemical or electrical influences, accidental damage, Acts of God, neglect, deficiency in electrical power, air-conditioning or humidity control. The benefit of this Warranty may not be assigned by the End User. End Users who are consumers should note their rights under this Warranty are in addition to and do not affect any other rights to which they may be entitled against the seller of the Equipment.

1603/1605: INSTALLATION/CLUB MIXERS
The UREI 1603 and 1605 Installation Music Mixers provide a fully-featured control centre for Clubs and Performing DJs.With the legendary UREI sound quality, stunning looks and Soundcrafts exacting manufacturing construction, they are set to become the new standard in clubs worldwide. No club mixer has been designed to allow such total integration with the club sound system. Employing unique functionality such as a rotateable connector panel so that connections may be made to the rear or underside of the mixer (for portable or fixed use), the UREI 1603 and 1605 have a rich feature set to match the requirements of todays DJs. Much thought has gone into the design of the UREI 1603 and 1605 to ensure it has the right features for club installation. For example, there is an external MUTE interface that when triggered, mutes all music channels leaving only the announcement/safety mic channel open for public address. A comprehensive monitoring system allows not only monitoring of CUE channels and the MIX output, but also the Aux Send and Return signals.With the ability to split CUE monitoring between CUE and MIX signals with adjustable balance and a FLIP function which allows the split signals to be flipped in the earpieces along with EQ on the headphone output, the 1603/1605s monitoring is second to none. Input connectivity and flexibility is maximized each channel has connections for a Microphone (XLR), Deck (RIAA on RCA/Phono) and Line level (RCA Phono) sockets, with the RIAA inputs switchable to be line level, giving the 1605 a total of 7 Mic and 14 line level input connections. Furthermore, the Aux (FX) output has its own return input conveniently located on the top panel to maximise connectivity. And full connectivity options are provided on the outputs too, with both balanced XLR connectors and unbalanced RCA connectors for both Booth and Master outputs. For installers, optional internal links on the Line inputs allow either a 10dB reduction in gain or +14dB gain increase, to allow for connection of MP3 players etc. Other features include a tri-colour channel LED to indicate signal, beat (tempo) and peak warning, a 10-segment output meter and EQ on the Booth outputs. The UREI 1603 and 1605 Club Sound will never be the same again.

Pictured: UREI 1603

Pictured: UREI 1605

KEY FEATURES

4 Full-function stereo channels (1603) 7 Full-function stereo channels (1605) Each has inputs selectable from Mic, Phono and Line connections Phono inputs are switchable to become Line level, individually Mic insert on channel 1 for ease of connecting external processing Rotateable rear panel allows connectors to be located on the rear of or underneath the console (for best cable access) External mute function mutes all channels except mic channel 1 to allow PA announcements but mutes music 3-band EQ on Channel 1 (Mic) 12dB 3-band ISOLATOR EQ on channels 2-7, isolating from full cut to +6dB 1 Aux send per channel: Channel sends switchable pre/post fader individually; Aux Return conveniently located on top panel and can be assigned to crossfader Comprehensive CUE/Monitoring system:Aux send can be CUEd to headphones; Aux Return can be CUEd to headphones VCA-based crossfader reduces fader noise and allows fully variable control curves for total control of crossfade mixing style Headphone Output on 1/4 and Mini-jack connectors EQ on headphone output Booth and Master Outputs on XLR, balanced and RCA, unbalanced Comprehensive booth controls EQ, mute function and L/R/Stereo output selector Separate master mono output High Pass filter on Master and booth outputs eliminates stage or turntable rumble Balance control on Master output Master Output Mono switching DJ Mic (channel 1 only) to booth output defeat switch Tri-colour LED shows Signal/Beat/Peak metering Split Cue Headphone switch Flip function switches Cue and Mix in headphones (L and R) 10-segment Blue/White/Red LED output metering, which can read Left/Right or Split Cue/Mix Integral rack ears for easy desktop/rack mounting Individual channel gain structure controls (boost +14dB or reduce -10dB) Master output attanuator pads (engineer only -10dB and +20dB)

1603/1605: TECHNICAL

CHANNEL INPUTS
Mic inputs are on balanced XLR connectors, while RIAA and Line inputs are provided on unbalanced RCA phono connectors.A 1/4" TRS Insert jack is provided in the Mic path of Channel 1 to allow connection of external processing.

PHONES SECTION

The front panel illuminated headphone output is supplied on both 1/4 jack and 3.5mm mini-jack connectors for total flexibility.
EXTERNAL MUTE FUNCTION BOOTH OUTPUT
The Booth output is provided on both balanced XLR and unbalanced RCA phono connectors, and is controlled by the master Booth level control.A Mic Defeat switch mutes the signal from the mic to the booth output to avoid feedback. This contact port will mute all music channels except Mic input 1, to allow PA announcements. Useful for fire alarm systems.

POWER SUPPLY

The high quality internal PSU is fed via an IEC mains inlet, allowing a detachable mains cable to be used.A cable retaining clip provides total cable security. Universal power supply 100V-240V AC. Consumption 50W max.

MASTER OUTPUT

The Master output is provided on both balanced XLR and unbalanced RCA phono connectors, and is controlled by the Master level control.A separate 1/4" jack feeds a balanced mono sum of the booth output signal.

AUX/FX LOOP

The send-and-return Aux/FX loop is supplied on unbalanced RCA phono connectors, and works in conjunction with the top panel Aux/FX level and routing controls.

TECHNICAL SPECIFICATION

input and output levels XLR INPUT (electronically balanced) mic
Gain range. +22 - +54db with +20dB/-12dB gain trim Max. Input level. -14dBu Input impedance. 2 kohms

mono output

Output impedance. 75 ohms Recommended load. 2k ohms or greater Frequency response. 1dB, 20Hz-20kHz Distortion. <0.05% THD, 20Hz-20kHz @ +16dBu Max. output. +20dBu into 2k ohms
insert send (unbalanced, CH 1 only)
Nominal level. 0dBu Max. output level. +20dBu into 2 kohms Output impedance.75 ohms

effects loop output

insert return (unblanced, Ch 1 only) phono/line input (unbalanced)
Max. input level. +20dBu Input impedance. >50 k ohms Nominal level. 0dBu Trim. +12/-20dBu Max. input level. +20dBu Input impedance. 45 kohms
Output impedance. 75k ohms Recommended load. 5 k ohms or greater Frequency response. 1dB, 20Hz-20kHz Distortion. <0.05% THD, 20Hz-20kHz @ +16dBu Max. output. +20dB into 2k ohms

All channels routed at unity, mix at unity. <-85dB Crosstalk (@ 1kHz). <-85db

channel mute

Fader Cut-off (rel. 0 Mark). <-95dB FX Sends offness. <-90dB
rear panel connector connections XLR input and output (3 pin female XLR)
Pin 1. Ground Pin 2. Signal Hot Pin 3. Signal Cold
input and output impedance
INsert send and return (1/4"TSR Jack) MIC 1 and 2 only
Mic input. 2k ohms Line input. 45k ohms Stereo input (Unbalanced RCA Phono). 30k ohms Mix output. 75 ohms Aux output. 75 ohms Headphones output. 40 ohms
Tip. Send Ring. Return Sleeve. Ground

maximum output levels

phono and 1/4" Jacks
Tip. Hot Sleeve. Screen High Pass Filter. 18dB/Octave @ 63Hz
Insert Send output. +20dBu into 2k ohms Mix output. +20dBu into 600 ohm Aux output. +20dBu into 2k ohms Booth output. +20dBu into 600 ohms Headphones output. +20dBu into 300 ohms Headphones. 190mW into 150 ohms

dimensions/weight

master/booth output
Output impedance. 75 ohms Recommended load. 600 ohms or greater Frequency Response. 1dB, 20Hz-20kHz Distortion. <0.05% THD, 20Hz-20kHz @ +16dBu Max. output. +20dB into 600 ohms
Without rack ears (mm). 87.6(H) x 338(W) x 400(D) With rack ears (mm). 87.6(H) x 381(W) x 400(D) Weight. 7.5kgs/16.5lbs
Without rack ears (mm). 87.6(H) x 440(W) x 400(D) With rack ears (mm). 87.6(H) x 483(W) x 400(D) Weight. 8.7kgs/19.1lbs

headphone output

Output impedance. <40 ohms Recommended load. 150 ohms or greater Frequency response. +0, -1dB, 20Hz-20kHz into 200 ohm load Distortion. <0.05% THD, 20Hz-20kHz @ +16dBu Max. output. 190mW into 150 ohms
Soundcraft Registered Community Trade Mark/RTM No. 000557827

SOUNDCRAFT

HARMAN INTERNATIONAL INDUSTRIES LTD., CRANBORNE HOUSE, CRANBORNE ROAD POTTERS BAR, HERTS, EN6 3JN, UK T: +44 (0)F: +44 (0)E: info@soundcraft.com

SOUNDCRAFT USA

8500 BALBOA BLVD. NORTHRIDGE, CA 91329, USA T: +1-818-920-3212 F: +1-818-920-3208 E: soundcraft-usa@harman.com

www.ureidj.com

Soundcraft reserves the right to improve or otherwise alter any information or specifications supplied in this document or any other documentation supplied hereafter. E&OE 01/05 This equipment complies with the EMC Directive 89/336/EEC Part No: ZL0632 Issue 4
Soundcraft recommends AKG professional DJ headphones for use with Urei DJ mixers

www.akg.com/dj