M U L T I

P U R P O S E

M I X E R S

LOW NOISE INPUT STAGE
The easy-feel rotary pot controlled input stage utilises an ultra-low noise pre-amplifier with a wide gain (60dB max) for excellent signal to noise performance. Professional +48v phantom power is globally switchable for all mic inputs when using condenser microphones and DI boxes.
RESEARCH ENHANCED EQ SECTION
Three carefully chosen bands of Soundtracs EQ which have been designed specifically to give the utmost control and musical feel. High Frequency Filter This shelving filter controls the highs and operates at 2kHz (15dB) and above. Mid Frequency Filter Essential to achieve a great vocal sound. Boost or cut the mids with this peak notch filter which operates around 2.5kHz (15dB). Low Frequency Filter Grab hold of the bottom end with this shelving filter that operates on frequencies 80Hz (15dB) and below.

FLEXIBLE INPUT

C H A N N E L S
Flexibility, ease of use and effortless control over sound tailoring, routing and level - the Topaz Mono and Stereo Input Channels have got the lot.

MONO INPUT CHANNEL

2 AUXILIARY SENDS
Two independently controlled auxiliary sends for patching in FX units such as reverbs, delays etc. or for creating a secondary monitor mix. Auxiliary 1 Variable level (up to +15dB) and switchable pre or post the main channel level control. Auxiliary 2 Variable send level (up to +15dB), of the FX send, - sent post the main channel level control.
Designed for use with line level instruments, microphones and DI boxes with switchable +48v phantom powering.You get a researchdeveloped 3 band EQ section with carefully chosen frequencies which are full of expression and bite. - No longer will you have to suffer weedy percussion or boomy vocals.

STEREO INPUT CHANNEL

CHANNEL CONTROLS
Solo - Meter and listen to an individual channel strip in isolation. Essential for level matching. Mute - Cut the signal by pressing the mute switch. - An invaluable aid in mix noise reduction. Routing - The input signal can be routed to the two groups or directly to L-R. Channel Controls - An easy-grab rotary pot controls the pan whilst the channel level is controlled via a quality 60mm smooth-glide fader.
Offers effortless mixing of stereo line level instruments such as keyboards and tone modules as the L and R signals are handled simultaneously via the same controls. In addition you get a lively 2 band equaliser plus two distinct auxiliary sends. (This module can also be used as two mono channels).

Topaz Mono Input Channel

LOW-NOISE INPUT STAGE
Two quality 1/4" jack sockets (for a left and right stereo pair), give access to the ultralow noise electronics especially tailored for line level stereo signals. Superb signal to noise ratio is assured whether you choose -10dBV (semi professional) or +4dBu (professional) operating levels.
EQ DESIGNED FOR STEREO SIGNALS
Carefully chosen frequencies are the key to a successful stereo EQ section and here, Soundtracs have again shown their expertise with 2 filters specifically tailored to suit keyboards, and synth modules. High Frequency Filter This shelving filter operates at 2kHz (15dB) and above and can be used to add sparkle to a sound. Low Frequency Filter Affects 80Hz (15dB) and below and is ideal for adding depth or decreasing boominess in certain sounds such as Brass and Woodwind.
Solo - A sure-touch switch activates the Pre Fade Listen (solo) function - available via the headphone output and displayed on the master meters. This feature makes for easy level matching between instruments and the mixer. Routing - A choice of assignment of the stereo input signal to the two groups or directly to the LR mix is available should a number of input channel levels need to be controlled simultaneously.The left signal is sent to group one and the right signal to group two. Balance - The balance control, (not to be confused with pan), is a rotary pot which varies the relative levels of the left and right stereo signals. - Turning the pot anticlockwise increases the level of the left signal, clockwise the right.When using a Stereo Input Channel in mono mode the balance control does the job of a regular pan. Channel Controls - A smooth-glide 60mm fader controls up to +20dB of stereo channel level.

When you go shopping for a general purpose mixer youre normally confronted with one mass of compromises. Not enough inputs, dull, lifeless EQ, no PFL facility, etc. - You know the beef. It seems that you just cant get the features you need at the price you want. Well nobody told Soundtracs. Best known for the studio and review acclaimed production-class Jade and Solitaire consoles, the stadium filling Sequel II live sound mixer and the revolutionary Virtua Digital Console, it seems somewhat fitting that it is they who should develop a range of feature-rich, lowcost mixers which make the competition look somewhat, how shall we say, overvalued.
These three barnstorming compact mixers are designed for keyboard set-ups, gigging bands, sophisticated audio installations, clubs and pubs as well as stereo recording. The inputs are all high quality and ultra low-noise with a signal to noise ratio spec the competition would die for. Theyre easy to set-up too, thanks to the on-board PFL monitoring and metering system. Then theres the EQ, 3 fixed bands with frequencies carefully chosen after extensive research, for expert signal shaping and tailoring. And of course you get the Soundtracs sound as standard. Why compromise.
Soundtracs Topaz 12-4 (4 mono & 4 stereo inputs)
Soundtracs Topaz 14-4 (10 mono & 2 stereo inputs)
Topaz Stereo Input Channel

BARGRAPH METERING

All Topaz 4-bus mixers are equipped with bargraph metering with two dual operation 10 segment meters. (-21dB to +6dB)
BALANCED 60dB GAIN MIC INPUTS
All Topaz 4-bus mixers are equipped with a balanced microphone input stage which has a class-leading range of +10dB to +60dB. (Line -20dB to +30dB)

MASTER FX RETURNS

Each of the 2 stereo FX returns are mini input channels also with their own rotary level controls.When using an FX unit with stereo outputs these L and R inputs can be used to maintain the stereo effect.When using an FX return as an extra mono input only the L channel should be used.This signal is then sent in equal parts to the main L R outputs.

THE MASTER SECTION

Two Track Tape Control 2-track machines such as DAT or cassette can be connected via RCA connectors.This allows you to record a mix and to monitor off tape (when the tape switch is activated). Ideal for recording a performance or when using backing tapes. Level of the tape input is controlled via the FX return 2 rotary pot. Metering The two LED meters can indicate the LR bus, 1-2/S bus, the AUX 1 or AUX 2 bus, or any input channel so that headroom in the console can be optimised. Auxiliary Masters AUX 1 and AUX 2 can be solod to the headphone out.Aux 1 also has a pre/post switch which when activated makes all channel AUX 1 pots send pre fader, easily allowing a monitor mix to be created. Headphone Monitoring Dual function headphone monitoring is provided via the built-in headphone amplifier with +20dB rotary control. Main L & R Outputs Precise control over the main XLR balanced L & R outputs and mono output is made using two quality smooth-glide 60mm faders.

THE GROUP SECTION

One 60mm fader controls the level of the stereo group section which may also be used as two mono groups. Each group has its own output but with the option of also sending the grouped signal to the LR mix. - Ideal in a live situation where the level of a combination of channels can be controlled easily from a single fader. eg drumkit, backing vocals etc.
Soundtracs Topaz 24-4 (20 mono & 2 stereo inputs)

20dB PAD

All Topaz 4-bus mixers have a 20dB Pad switch on the main output. Essential when using a Topaz as a sub-mixer it enables the output to match the main consoles input.
Topaz mixers are ideal for gigging bands, sophisticated fixed installations, places of worship, keyboard mixing, post production mixing, mastering and sequencer based studios. - Its just a question of choosing the number of inputs you need.
GIGGING BANDS THEATRE CLUB INSTALLATIONS INSTALLATIONS STEREO RECORDING

AV/POST PRO MIXING

PLACES OF WORSHIP
MEETINGS & CONFERENCES

DIGITAL RE-MIXING

SUGGESTED APPLICATIONS
Topaz mixers can be used for a whole host of applications in a multitude of environments, - clubs, halls, studios, AV suits and the like. Space permits only a few examples to be shown in this brochure, but because of their ease of use and high audio specification theyre suitable, (and capable) of much more.
Keyboard Mics FX Unit Amp Tape Deck PA Speakers

SMALL COMBO PATCHING

Topaz 12-4 and 14-4 mixers are ideal for the small combo or club duet as the example to the right shows.
Monitors DAT Mastering Deck FX Unit 8 Track Digital Multitrack Amp
DIGITAL MULTITRACK RE-MIXING
The excellent audio specification of Topaz mixers makes them ideal for re-mixing 8 track digital multitrack recordings.
Solo Left Output Pad Pan M Level Off to +10dB 20dB Aux 1 Pre Mute Line Input Aux 1 Post Level Off to +10dB Aux 2 L-R Right Output M

Phantom Power

Mic Gain +10 to +60dB Line Gain -20 to +30dB 3 Band Equalizer Insert

L-R/1-2

Mic Input
Left Tape Output Mono Right Output

MIC INPUT CHANNEL

M Left Input Solo 2 Band Equalizer L-R/1-2 Right Input +4/-10 Balance Meter Select
G1 Stereo Group G2 Left Meter Headphone Output Headphone Level

Aux 1 Pre

Level Off to +10dB
Aux 1 Post Solo Switching Aux 2 Aux 1 Solo Right Meter
S P E C I F I C A T I O N S
INPUT & OUTPUT IMPEDANCES Microphone input Line inputs Outputs 1k2 ohms >20k ohms <70 ohms +26dBu +21dBu 140mW into 600 ohms 20Hz - 30kHz 1dB -128dBu <-81dBu <0.007% @ 1kHz <-84dBu >95dB >90dB >85dB >75dB Width 368mm 467mm 770mm Height 85mm 85mm 85mm OUTPUT LEVELS Master output AUX output Headphone output (per side) FREQUENCY RESPONSE Channel E.I.N. Source resistance 150 ohms MIX NOISE (Master fader at 0dB) DISTORTION

STEREO CHANNEL

Aux 1 Output M EFFECT RETURN 1 Left Input Level Right Input Off to +20dB Right Input EFFECT RETURN 2 Left Input Tape In Left Right Level Off to +20dB
G1 Bus G2 Bus Status Solo Left Right Aux 1 Pre Aux 1 Post Aux 2

Aux 2 Solo

Aux 2 Output M

TOPAZ BLOCK DIAGRAM

Professional Vodeo Recorder Location Audio Stereo Mic Set-up Background Music FX Processor Control Room Monitors
Line AUX NOISE Input sends down

Power Amp

SIGNAL CROSSTALK (measured at 1kHz) Input fader attenuation AUX send attenuation Adjacent channel Stereo channel separation DIMENSIONS Weight (unpacked) Depth 12-4 14-4 24-4 5.1Kg 6.3Kg 10.5Kg 406mm 406mm 406mm

POST PRODUCTION SET-UP

A typical set-up when combining a voice over, location audio and background music. Effects such as reverb can easily be added to the voice at this time.

DEALER

Keyboards/sound modules use either stereo or two mono channels

Powered Wedge

Main Mixer
Noise Gate/Compressor FX Processor

DISTRIBUTOR

SOUNDTRACS PLC
Unit 21-D. Blenheim Road Longmead Business Park. Epsom Surrey KT19 9XN. England Telephone: (+44) (0)5000 Fax: (+44) (0)5050 web: http://www.soundtracs.co.uk email: sales@soundtracs.co.uk

KEYBOARD SUB-MIXING

Stereo keyboards, samplers and sound modules can use either two input channels or a single stereo channel. Monitor feed is taken from the mono output.
Products offered for sale may differ from those described or illustrated in this brochure due to later production changes in specifications, components or place of manufacture.The contents of this brochure are therefore not to be treated as representations as to the current availability of products as described, or as to products actually offered for sale. Soundtracs Plc reserves the right to make changes at any time, without notice, in prices, colours, materials, specifications and models, and also to discontinue models

Input faders down

Soundtracs PLC 10/98. Designed and Produced by The Detective Agency