OWNERS MANUAL BEDIENUNGSANLEITUNG
PROFESSIONAL POWER AMPLIFIER
CONTENTS Introduction. 5 Welcome. 5 Unpacking and Inspection. 5 Scope of Delivery and Warranty. 5 Features and Description. 5 Responsibility of the User. 5 Installation. 7 Controls, Indicators and Connections. 7 Operating Voltage. 8 Mains Switch. 8 Mounting. 8 Ventilation. 8 Groundlift. 9 LPN-Filter. 9 Selecting the Mode Of Operation and Audio Output Cabeling. 9 Audio Input Cabeling. 10 Operation. 12 Volume Control. 12 Indications. 12 FAN Cooling. 12
INHALT Beschreibung. 16 Willkommen. 16 Auspacken und Inspektion. 16 Lieferumfang und Garantie. 16 Eigenschaften & Beschreibung. 16 Verantwortung des Betreibers. 16 Installation. 17 Bedienelemente, Anzeigen und Anschlsse. 17 Betriebsspannung. 18 Netzschalter. 18 Einbau. 18 Khlung. 18 Groundlift. 19 LPN-Filter (Low-Pass-Notch). 19 Betriebsart (MODE) und Verkabelung des Audio-Ausgangs. 19 Verkabelung des Audio-Eingangs. 21 Betrieb. 22 Eingangspegel-Regler. 22 Anzeigen. 22 Lfter. 22
Specifications/Technische Daten. 23
Owners Manual / Bedienungsanleitung
IMPORTANT SAFETY INSTRUCTIONS
The lightning flash with arrowhead symbol, within an equilateral triangle is intended to alert the user to the presence of uninsulated dangerous voltage within the products enclosure that may be of sufficent magnitude to constitute a risk of electric shock to persons. The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and maintance (servicing) instructions in the literature accompanying the appliance.
1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12.
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 cover any ventilation openings. Install in accordance with the manufactures instructions. Do not install near heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat. Do not defeat the safety purpose of the polarized or the grounding-type plug. A polarized 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. I 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, 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.

13. 14. 15. 16. 17.

Unplug this apparatus during lightning storms or when unused for a long period of time. Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been damaged in any way, such as powersupply cord or plug is damaged, liquid has been spilled or orbjects have fallen into the apparatus, the apparatus has been exposed to rain or moisture, does not operate normally, or has been dropped. Do not expose this equipment to dripping or splashing and ensure that no objects filled with liquids, such as vases, are placed on the equipment. To completely disconnect this equipment from the AC Mains, disconnect the power supply cord plug from the AC receptacle. The mains plug of the power supply cord shall remain readily operable.

IMPORTANT SERVICE INSTRUCTIONS
CAUTION: These servicing instructions are for use by qualified personnel only. To reduce the risk of electric shock, do not perform any servicing other than that contained in the Operating Instructions unless you are qualified to do so. Refer all servicing to qualified service personnel.
1. 2. 3. 4. 5. 6. 7. Security regulations as stated in the EN 60065 (VDE 0860 / IEC 65) and the CSA E65 - 94 have to be obeyed when servicing the appliance. Use of a mains separator transformer is mandatory during maintenance while the appliance is opened, needs to be operated and is connected to the mains. Switch off the power before retrofitting any extensions, changing the mains voltage or the output voltage. The minimum distance between parts carrying mains voltage and any accessible metal piece (metal enclosure), respectively between the mains poles has to be 3 mm and needs to be minded at all times. The minimum distance between parts carrying mains voltage and any switches or breakers that are not connected to the mains (secondary parts) has to be 6 mm and needs to be minded at all times. Replacing special components that are marked in the circuit diagram using the security symbol (Note) is only permissible when using original parts. Altering the circuitry without prior consent or advice is not legitimate. Any work security regulations that are applicable at the locations where the appliance is being serviced have to be strictly obeyed. This applies also to any regulations about the work place itself. All instructions concerning the handling of MOS-circuits have to be observed.
SAFETY COMPONENT (MUST BE REPLACED BY ORIGINAL PART)
WEEE RECYCLING/DISPOSAL INSTRUCTIONS
The Wheelie Bin symbol found on the product or in the manual indicates that this product must not be disposed of with other waste. It is in our category the manufacturers responsibility to properly dispose of their waste electrical and electronic equipment (WEEE) at the end of its life. Due to the differences in each EU countrys management of WEEE, please contact your local distributor. We are committed to facilitate our own electronic-waste-management-system, for the free of charge return of all EVI Audio GmbH products: Telex, Dynacord, ElectroVoice, Midas Consoles, KlarkTeknik and RTS. Arrangements are made with the dealer where you purchased the equipment from, for the returning of all unusable equipment at no cost, to the factory in Straubing, for environmental protective disposal.

Owners Manual

1 Introduction

1.1 Welcome

Thank you for choosing Electro-Voice Q series amplifier. Please take time to consult this manual so that you can understand all the features built into your Electro-Voice amplifier and fully utilize all its performance capabilities.

1.2 Unpacking and Inspection
Carefully open the packaging and take out the power amplifier. Inspect the power amps enclosure for damages that might have happened during transportation. Each amplifier is examined and tested in detail before leaving the manufacturing site to ensure that it arrives in perfect condition at your place. Please inform the transport company immediately, if the power amplifier shows any damage. Being the addressee, you are the only person who can claim damages in transit. Keep the cardboard box and all packaging materials for inspection by the transport company. Keeping the cardboard box including all packing materials is also recommended, if the power amplifier shows no external damages.
CAUTION: Do not ship the power amp in any other but its original packaging.
When shipping the power amp, make sure to always use its original box and packaging materials. Packing the power amplifier like it was packed by the manufacturer guarantees optimum protection from transport damage.
1.3 Scope of Delivery and Warranty
1 Power Amplifier 1 Owners Manual (this document) 1 Mains Cord 4 Foot Stands 1 Warranty Certificate Keep the original invoice that states the purchase/delivery date together with the warranty certificate at a safe place.
1.4 Features and Description
Electro-Voice Q series amplifiers offer a package of reliable high output power, high efficiency and legendary pro audio performance. They are the premium choice as system drive for a variety of mobile and club sound systems like e.g. ZX, TourX and Phoenix loudspeaker families. Their comprehensive protection system includes circuitry against overheating, overload, short circuit, HF and DC as well as back-EMF and inrush current. Loudspeakers are protected by turn-on-delay relays. The build-in patented LPN (Low-Pass-Notch) filter compensates for transient distortion in dynamic signals (such as kickdrums) to achieve a higher acoustic output and more punch.
1.5 Responsibility of the User

Speaker System Damage

Q power amps provide extremely high power output that might be dangerous for human beings as well as for the connected speaker systems. High output voltages can damage or even destroy the connected speaker systems, especially, when the Q amplifier is operated in bridged mode. Prior to connecting any loudspeakers, make sure to check the speaker systems specifications for continuous and peak power handling capacities. Even if amplification has been reduced through lowering the input level controls on the amplifiers front panel, it is still possible to achieve full power output with a sufficiently high input signal.
Danger at the Loudspeaker/Power Outputs

Q amplifiers are capable of producing dangerously high voltage output that is present at the output connectors. To protect yourself from electric shock, do not touch any blank speaker cables during operation of the power amp.
WARNING: The terminals marked with are hazardous live and the external wiring connected to these terminals requires installation by an instructed person or the use of ready-made leads of cords.
RF-Interference (FCC Information USA)
1. IMPORTANT: Do not modify this unit! Changes or modifications not expressly approved by the manufacturer could void the users authority, granted by the FCC, to operate the equipment.
2. 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 agains harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: Reorient or relocate the receiving antenna Increase the separation between the equipment and receiver Connect the equipment into an outlet on a circuit different from that to which the receiver is connected Consult the dealer or an experienced radio/TV technician for help
This is a Class A product. In a domestic environment this product may cause radio interferences in which case the user may be required to take adequate measures.
This Class A digital apparatus complies with Canadian ICES-003. Cat appareil numrique de la classe A est conforme la norme NMB-003 du Canada.

2 Installation

2.1 Controls, Indicators and Connections

Front View

5 Rear View
Input Level Control (CH A, CH B) for channels A and B Level Indicators for channels A and B Protections Indicator (PROTECT) Power On/Off Indicator (POWER) Mains Switch
Mains Input Ground Lift Switch (CIRCUIT TO CHASSIS SWITCH) Type Plate Audio Inputs (INPUT A, INPUT B) Audio Outputs (OUTPUT A, OUTPUT B) Power Amp Mode Switch (MODE) LPN Filter Switch (LPN) Power Amp Outputs Speakon (CHANNEL A, CHANNEL B)
PROFESSIONAL POWER AMPLIFIER 2.2 Operating Voltage
The power amplifier receives its power supply via the Mains input. Only the provided power cord may be used. During installation, always separate the power amplifier from the mains. Connect the power amplifier only to a mains network, which corresponds to the requirements indicated on the type plate.

2.3 Mains Switch

The Mains Switch on the front panel separates the power amp from the mains. Turning the Mains Switch to ON starts booting up the power amp. A soft start circuit compensates mains inrush current peaks and thus prevents the automatic cutout of the mains from reacting when switching on the power amplifier. Speaker system switch-on is delayed by approximately 2 seconds via output relays, effectively suppressing any possible power-on noise, which otherwise might be heard through the loudspeakers. PROTECT-LED lights up and fans are at high speed during this delay. This indicates all protections are working fine.

2.4 Mounting

Q amplifiers have been designed for installation in a conventional 19-inch rack case. Attach the power amp with its frontal rack mount ears using 4 screws and washers as shown in following illustration. Additionally securing the amplifier at the rear becomes necessary, if the rack case in which the power amplifier has been installed will be transported. Failure to do so may result in damage to the power amplifier as well as to the rack case. Attach the power amp as shown in the illustration using 4 case nuts and screws. Brackets for securing the power amplifier are available as accessories.

2.5 Ventilation

As with all Electro-Voice power amps with fan cooling, the airflow direction is front-to-rear, obviously because there is more cold air outside of the rack case than inside. The power amplifier remains cooler and dissipating the developing waste heat in a specific direction gets easier. In general, setting up or mounting the power amplifier has to be done in a way that fresh air can enter unhindered at the front and exhausted air can exit at the rear. When installing the power amp in a case or rack system, attention should be paid to these details to provide sufficient ventilation. Allow for an air duct of at least 60 mm x 330 mm between the rear panel of the power amplifier and the inner wall of the cabinet/rack case. Make sure that the duct reaches up to the cabinets or the rack cases top ventilation louvers. Leave room of at least 100 mm above the cabinet/rack case for ventilation. Since temperatures inside of the cabinet/rack case can easily rise up to 40 C during operation of the power amp, it is mandatory to bear in mind the maximum allowable ambient temperature for all other appliances installed in the same cabinet/rack case.
CAUTION: Blocking/closing the power amps ventilation louvers is not permissible. Without sufficient cooling/ventilation, the power amplifier may automatically enter protect mode. Keep ventilation louvers free from dust to ensure unhindered airflow. Do not use the power amplifier near heat sources, like heater blowers, stoves or any other heat radiating devices. To ensure trouble-free operation, make certain that the maximum allowable ambient temperature of +40C is not exceeded.

PROFESSIONAL POWER AMPLIFIER 2.6 Groundlift
The ground lift switch allows for eliminating noise loops. When operating the power amplifier together with other equipment in a rack case, setting the switch to the GROUNDED position is recommended. Set the switch to UNGROUNDED, when the power amplifier is operated together with appliances with differing ground potentials.

2.7 LPN-Filter

The patented LPN (Low-pass notch) filter corrects the frequency and phase response of the connected loudspeakers. This effect can not be reached using equalizers or Bass-Boosters, because the LPN filter mainly optimizes the rise time of the audio signal. Switch the filter ON or OFF for evaluation of the actual effect that the filter has on the sound. The sound is getting more powerful, especially when using fullrange speakers (e.g. 12/2, 15/2) or subwoofers. For large systems (e.g. controlled via EVs DC-One) using the LPN filter is not recommended.
2.8 Selecting the Mode Of Operation and Audio Output Cabeling
The MODE switch on the power amps rear panel defines how the audio inputs handle the input signals. Possible settings are DUAL, PARALLEL or BRIDGED. DUAL In DUAL mode, the two channels of the power amplifier work independent from each other. This mode of operation is being used for all 2-channel applications, like stereo operation. Using the input level controls on the power amps front panel allows independently adjusting the channels amplification.
PARALLEL In PARALLEL mode, the inputs of channel A and channel B are directly electrically linked. The audio signal has to be applied to the input connectors of channel A. Using the input level controls to independently control the amplification of the two channels is still possible because only the channels inputs are linked. PARALLEL operation is the mode of choice, whenever the same input signal drives multiple power amp channels of a large system installation.
CAUTION: In PARALLEL mode, the input signal has to be fed to input channel A only.
Typical Speaker System Cabling The first possibility in DUAL or PARALLEL mode is to use the two Speakon-type connectors, whereas speakers have to be connected to pins 1+ and 1 of the sockets. The correct connection is also indicated at the amplifiers rear panel.
Bi-Amp Cabling The second possibility for connecting the speakers when the power amplifier is operated in DUAL or PARALLEL mode is to only use the Speakon-type connector CHANNEL A and to connect one speaker cabinet to pins 1+ and 1, as described above and the second cabinet to pins 2+ and 2 as shown in illustration. Only pins 2+ and 2 of the Speakon CHANNEL A connector are assigned. Proceeding like this facilitates the cabling of speaker systems that are used in active 2-way operation (BiAmp). The correct connection is also indicated at the amplifiers rear panel.

Speakon CHANNEL B 1+ B+ 1BConnector Signal 1+ A+
Speakon CHANNEL A 1A2+ B+ 2B-
Table 2.1: Speaker connection using Speakon A and B connectors BRIDGED In BRIDGED mode both amp channels work in push-pull operation to provide doubled output voltage. The audio signal has to be applied to the input connectors of channel A, amplification is set via input level control of channel A only.
CAUTION: In BRIDGED mode, the input signal has to be fed to input channel A only. Amplification is set via input level control of channel A only.
In bridged mode operation speaker connection has to be established using pins 1+ and 2- of the Speakon socket CHANNEL A, see illustration right. The correct connection is also indicated at the amplifiers rear panel.
Speakon CHANNEL A Anschluss Belegung 1+ Bridged+ 2Bridged-
Table 2.2: Speaker connection using Speakon A
CAUTION: In BRIDGED mode operation, it is not allowable for the load connected to fall below a value of 4 ohms. Extremely high voltages can be present at the output. The connected speaker systems must be able to handle such voltages. Make sure to completely read and fully observe power rating specifications of the speaker systems to be used and to check them against the output power capacity of the power amp. 2.9 Audio Input Cabeling
Inputs INPUT A and INPUT B are electronically balanced. The pin-assignment of XLRF-type connectors is in accordance with the IEC standard 268.

2, HOT

3, COLD

1, SHIELD

Illustration 2.1: Balanced connection of input Whenever possible, using balanced audio signal feeds at the input of the power amplifier is always preferred. Unbalanced connections should only be used if the cables are very short and no interfering signals are to be expected in the vicinity of the power amplifier. In this case, bridging the screen (shielding) and the pin of the inverting input inside of the connector is
mandatory. Otherwise, a 6 dB drop in level could result. Please also see illustration 2.11. Due to their immunity against external interference sources, such as dimmers, mains connections, HF-control lines, etc., using balanced cabling and connections is always preferable.
JUMPER FROM COLD TO SHIELD
Illustration 2.2: Unbalanced connection of input Next to its input connector, each channel provides an individual XLR-type connector (OUTPUT A or OUTPUT B), which is connected in parallel to allow for comfortably daisy-chaining the audio signal for the connection of additional audio equipment.

Illustration 2.3: Balanced connection of output (Daisy-Chain)

3 Operation

3.1 Volume Control
In DUAL and PARALLEL mode, the level controls CH A and CH B on the power amps front panel are used to control the amplification of the corresponding channel. Turning the control to the right increases and turning it to the left decreases the volume. In BRIDGED mode operation, the output volume of the power amp is only controlled by the CH A level control. Any changes in the setting of the CH B level control are ignored.

3.2 Indications

PROTECT
The PROTECT LED lights indicating that one of the internal protection circuits against thermal overload, short-circuit, Back-EMF, HF-occurrence at the output, etc., has been activated. In that case, the output relays separate the power amps from the load connected to prevent the connected loudspeaker systems and the power amplifiers as well from being damaged. Whatever caused the fault e.g. a short-circuited speaker cable needs to be removed. In case of thermal overload you have to wait until the power amplifier cools down and automatically regains normal operation.

-40dB.LIMIT

Level indication is realized via vertical LED chains on the power amps front panel that individually indicate the actual levels of each channel at -40dB, -30dB, -20dB and -10dB below full modulation and 0dB as soon as full modulation is reached. 0dB indication results from comparing the power amps internal ratio of input to output voltage, which ensured precise indication of the full modulation limit, even before limiting becomes audible. The LIMIT LED lights as soon as the integrated dynamic audio limiter is activated and the power amplifier is driven at the clipping limit or generally at its maximum capacity. Short-term blinking is not a problem, because the internal limiter controls input levels of up to +21 dBu down to a THD of approximately 1 %. If, on the other hand, the LIMIT LED light constantly, reducing the volume is recommended to prevent the loudspeaker systems connected from being damaged by probable overload.
The POWER LED lights green when the power amplifier is on. If the POWER-LED does not light, despite the fact that the amplifier has been switched on, this indicates that the power amp is not connected to the mains or the primary fuse has blown.

3.3 FAN Cooling

The power amplifier has two fans. The fans are switched in three performance-optimized levels, i.e. they are not running permanently but the speed of the fans is controlled depending on the ambient temperature. That in return ensures very silent running during idle state. The temperatures of the power ampss channels are registered and monitored separately.

350 W 1700 W 950 W 310 W 1200 W 750 W -
480 W 2450 W 1400 W 700 W 3400 W 1800 W 950 W 420 W 1700 W 1100 W 630 W 2400 W 1500 W 850 W 2800 W 1800 W 78.8 V < 10 Hz.30 kHz 32.0 dB 3600 W 2400 W 90.6 V

1300 W 900 W 55.3 V

1800 W 1200 W 65.1 V

+2.2 dBu (1.0 Vrms)

+3.1 dBu (1.11 Vrms)

+5.1 dBu (1.39 Vrms)

+6.6 dBu (1.66 Vrms)
< 0.03% < 0.1% < 0.05% +21 dBu (8.69 Vrms) < -80 dB 10 Hz.40 kHz (1 dB) 20 k > V/s > 107 dB < -71 dBu Class AB Class H 240 V, 230 V, 120 V or 100 V; 50 Hz.60 Hz (factory configured) 700 W 240 V / 230 V: T12AH; 120 V / 100 V: T25AH 700 W 240 V / 230 V: T15AH; 120 V / 100 V: T25AH 850 W 240 V / 230 V: T15AH; 120 V / 100 V: T30AH 27 V/s > 109 dB 30 V/s > 110 dB
240 V / 230 V: T10AH; 120 V / 100 V: T20AH
Audio limiters, High temperature, DC, HF, Back-EMF, Peak current limiters, Inrush current limiters, Turnon delay Front-to-rear, 3-stage-fans +5 C.+40 C (40 F.105 F) I 483 x 88.1 x 421.5 12.6 kg (27.8 lbs) 14.8 kg (32.6 lbs) 16.3 kg (35.9 lbs) 17.7 kg (39.0 lbs) LPN, switchable 2-Way crossover, internal filter card, 24 dB, LR 330 Hz (NRS 90249), 500 Hz (NRS 90250), 800 Hz (NRS 90251), 1200 Hz (NRS 90252)
Depending on the ambient temperature, the unit might not operate continously at 2 load in Dual Mode or 4 in Bridged Mode. In addition input power exceeds 1.1 times rated power consumption with 2 load in Dual Mode or 4 load in Bridged Mode
Block Diagram / Blockschaltbild

Dimensions / Abmessungen

Americas Bosch Communications Systems 12000 Portland Ave South Burnsville, MN 55337, USA USA: Canada: Latin America:
Asia & Pacific Rim Japan: EVI Audio Japan Ltd. 5-3-8 Funabashi, Setagaya-Ku Tokyo, Japan 156-0055 Phone: +81 3-5316-5020 Fax: +81 3-5316-5031 Bosch Communications Systems Telex EVI Audio (Shanghai) Ltd. Room 3105-3109, No. 1 Building No. 218, Tian Mu West Road Shanghai, China PC: 200070 Phone: +86 21-6317-2155 Fax: +86 21-6317-3023 Telex EVI Audio (HK) Ltd. Unit 5, 1/F, Topsail Plaza 11 On Shum Street Shek Mun, Shatin, HK Phone: +852 2351-3628 Fax: +852 2351-3329 Telex Pte. Ltd. 38C Jalan Pemimpin Singapore 577180 Phone: (65) Fax: (65) 6319 0620

Phone:1-800-392-3497 Fax: 1-800-955-6831 Phone: 1-866-505-5551 Fax:1-866-336-8467 Phone: 1-952-887-5532 Fax: 1-952-736-4212

China:

Europe, Africa & Middle-East Germany: Bosch Communications Systems EVI Audio GmbH Hirschberger Ring 45 D-94315 Straubing, Germany Phone: +706-0 Fax: +706-265 EVI Audio France S.A. Parc de Courcerin Alle Lech Walesa F 77185 Lognes, France Phone: +33 1-6480-0090 Fax: +33 1-6006-5103 Hong Kong:

France:

Singapore:
Subject to change withou prior notice.

Printed in Germany

9/3/08 / F01U080363

Professional Power Amplifiers

Electro-Voice Amplifiers

a heritage of power and performance
Each new generation of Electro-Voice amplifiers inherits more than 60 years of experience in amplifer design and manufacturing. From the beginning, Electro-Voice has always considered the audio quality of an amplifier to be as important as the output power and reliability. An EV amp will do more than just work through the toughest conditions; it will ensure your system sounds its best while running safely. In the 1990s, EV launched its Precision Series amplifiers. The flagship P3000s success was built upon its groundbreaking headroom, accompanied by electrical and thermal stability under all load conditions. Failure was literally not an option with the P3000. As a vital part of the X-Array concert sound system, the P3000s performance was proven on the biggest world tours of the time, including the Rolling Stones and AC/DC. Moving forward into the 21st century, the IRIS-Net-controlled P3000RL followed suit on the largest tours and events of the era: LIVE8, Live Earth, Metallica, Kenny Chesney, and Foo Fighters, to name a few. As direct descendants of the legendary P3000, Q Series amps take Electro-Voices unique amplifier design philosophy to a new level of performance, power, efficiency, and value.

Innovative Class-H power

With Q Series efficient Class-H design, the permanent voltage rail is designed to cover the average music signal, rather than permanently supplying the voltage for maximum output power. If dynamic peaks require a higher output voltage, the voltage rail is switched to the maximum. This process saves up to 50% of the power consumption found in conventional amplifier design, and results in a dramatic reduction in heat output. Q Series combines the sonic excellence and ruggedness of its Precision Series predecessors with Class-H innovation, all in a compact and affordable package.
With 2 x 1200W @ 4 Ohms / 2x 1800W @ 2 Ohms, the Q1212 offers the horsepower to challenge the legendary P3000. It provides the same power from a 2U case at modest weight, making it a perfect subwoofer or high-power top drive for Phoenix, Tour X, and ZX3/ ZX5 systems or system combinations.
With 2 x 900 Watts @ 4 Ohms / 2 x 1250W @ 2 Ohms, Q99 can seriously serve as combined top & sub drive for most club-sized systems, such as Tour X or QRx.
A versatile workhorse, with 2 x 600W @ 4 Ohms / 2 x 900W @ 2 Ohms. Q66 has plenty of power to drive a huge variety of speaker systems, including Sx300, ZX4, Sb122, etc.
The base model, providing 2 x 450 W @ 4 Ohms / 2 x 650W @ 2 Ohms. An excellent choice for small tops and utility loudspeakers, such as ZX1, Sx Series, or EVID Series.

Audio Performance

While many people understand there are tremendous differences between professional loudspeakers, many also tend to think that amplifiers are only differentiated by the amount of output power they provide. Electro-Voice amplifiers serve to prove that there are also audible differences.

Dynamic Headroom

Amplifier power and distortion figures are typically specified with sine wave signals. However, music signals are far more dynamic than sine waves, comprising a pulsed wideband spectrum. We at EV believe that, above all figures, the tonal performance of live music counts most; therefore, all of our amplifiers are designed for dynamic headroom. This means that each and every EV amp has at least 30% more output capability for short-term signals, when compared to a long-term sine wave value. This additional headroom results in an amp that will, for example, allow for short term signal peaks of at least 780W when specd 600W. While dynamic headroom is audible when playing music through a sound system, another specification to observe is the increase in output power from an 8 Ohm load to 4 Ohms, and then down to 2 Ohms. Of course, all Electro-Voice amplifiers are designed to be absolutely stable into loads of 2 Ohms.

Sine wave and music signal on the output of an amplifier.
30% b a Specified output power, measured with sine wave signal. b The dynamic headroom designed into Electro-Voice amplifiers allows maximum dynamic response from music signals, providing more punch and power than other equally specd amps

Transient Response

When processing dynamic signals, other important criteria are signal speed and dynamic distortion. For example, kick drum signals carry pulses of many frequencies as an overlay spectrum. Therefore, and in contrast to many other manufacturers, EV specifies a lot more information on their amplifiers dynamic behavior than just slew rate figures. Important tests referring to the amps ability regarding multitone signal pulses are expressed by IMD-SMPTE measurements at high power levels. And, while IMD tests show the Intermodulation Distortion behaviour (how much sound is added by the amplifier), DIM30 is the real spec for speed in an amplifier. All these tests are carried out in EV labs during an amplifiers design phase, to ensure maximum sonic performance. While these technical explanations appear very complex, they are clearly audible. Take a Q Series amplifier and crank it up youll hear the difference immediately!
Protection Package & Dynamic Limiter
There are many good-sounding amplifiers available; however, for an amp to be considered the worlds best requires unparalleled reliability in real-world applications. Q Series amplifiers benefit from decades of professional amplifier design, and all the expertise that has made EV amps the concert/touring standard is built into Q Series. Our complete protection package includes sophisticated circuits against overheating, short circuit, DC output voltage, HF oscillation, back EMF (Electromotive Force), and destructive peak current. Furthermore, Q Series amps also protect your valuable loudspeakers with built-in dynamic limiters, preventing dangerous output clipping. The limiters immediately reduce amp gain when dynamic headroom is pushed to the limits at maximum output, keeping distortion below 1% in a situation that can otherwise cause a signal to clip, which is often fatal for woofers and drivers.
Maximum amp output signal

Unclipped Signal

Maximum output signal - input signal at input sensitivity, THD<= 0.1%

Clipped Signal

Input signal 10dB above input sensitivity - clipping output can destroy loudspeakers

Dynamic Limiter Signal

Same 10dB above input sensitivity input signal - the dynamic limiter keeps the THD to 1% max, thus preventing the speakers from damage.
Q-Series Amplifiers & Connectivity
Whatever application you choose, you can be sure your Q Series amp is prepared: Both inputs have a paralleled loop thru XLR output to route signal to other amp inputs Besides the usual channel A & B outputs via Speakon connectors (on pin 1+/1-), output A carries the signal of channel B as well (on pin 2+ / 2-), providing an easy drive option for biamped speakers Parallel & Bridge Mode option switches provide additional functionality with minimized cabling requirements An additional switchable LPN (Low-Pass Notch) filter provides extra tonal fundament and kick, with protective LowCut for using smaller passive 12 or 15 cabinets without additional subwoofers
Amplifiers & Speaker Systems
Recommended System Setups

Speakers

Sx80 Sx100+ Sx250 Sx300 SbZX1 ZX1 + SbZX3 ZX4 ZX5 TX1 22FM 1 TX1 22+Tx181 TX1 152FM TX1 152+TxTX2152 TX2181 PX2152 PX2152 (LF/HF) Px(LF/HF) PX2181 PX1 22M 1 PX1 152M QRx1 QRxQRx1 18S QRxQRx153 (LF/MH) QRx218S requires DC-One Signal Processor
The above recommendations are for typical use, also depending upon cabling, number of cabinets used, etc.

High Freq. High Freq.

Low Freq. Low Freq.

Mid/High Freq

Low Freq.
Q-Series Amplifier Specifications
Maximum Midband Output Power THD = 1%, 1 kHz, Dual Channel Rated Output Power THD < 0.1%, 20 Hz.20 kHz Maximum Single Channel Output Power Dynamic-Headroom, IHF-A Maximum Single Channel Output Power Continuous, 1 kHz Maximum Bridged Output Power THD = 1%, 1 kHz Maximum RMS Voltage Swing THD = 1%, 1 kHz Power Bandwidth THD = 1%, ref. 1 kHz, half power @ 4 Voltage Gain, ref. 1 kHz Input Sensitivity, rated power @ 8 , 1 kHz THD at rated output power, MBW = 80 kHz, 1 kHz IMD-SMPTE, 60 Hz, 7 kHz DIM30, 3.15 kHz, 15 kHz Maximum Input Level Crosstalk, ref. 1 kHz, at rated output power Frequency Response, ref. 1 kHz Input Impedance, active balanced Damping Factor, 1 kHz Slew Rate Signal to Noise Ratio Amplifier, A-weighted Output Noise, A-weighted Output Stage Topology Power Consumption 1/8 maximum output power @ 4 Power Requirements Protection Cooling Ambient Temperatur Limits Signal Processing Safety Class Dimensions (W x H x D), mm Weight

650W/ W/W W/W 8 1150W/ 2 660W/ 4 350W/ W/ W/ W/ W/ W/ 8 55.3 V 10 Hz.30 kHz 32.0 dB +2.2 dBu
900W/ 2 600W/ 4 380W/ W/W/W/ W/ W/ W/ W/ W/ W/ W/ 8 65.1 V 10 Hz.30 kHz 32.0 dB +3.1 dBu < 0.03% < 0.1% < 0.05% +21 dBu (8.69 Vrms) < -80 dB 10 Hz.40 kHz (1 dB) 20 k > 300
1250W/ 2 900W/ 4 550W/ W/W/W/ W/ W/ W/ W/ W/ W/ W/ 8 78.8 V 10 Hz.30 kHz 32.0 dB +5.1 dBu
1800W/ 2 1200W/ 4 750W/ W/ W/ W/ W/ W/ W/ W/ W/ W/ W/ 8 90.6 V 10 Hz.30 kHz 32.0 dB +6.6 dBu

25 V/s > 106 dB

26 V/s > 107 dB < -71 dBu

27 V/s > 109 dB

30 V/s > 110 dB

Class AB 550 W

Class AB 700 W

Class H 700 W

Class H 850 W
240 V, 230 V, 120 V or 100 V; 50 Hz.60 Hz (factory configured) Audio limiters, High temperature, DC, HF, Back-EMF, Peak current limiters, Inrush current limiters, Turn-on delay Front-to-rear, 3-stage-fans +5 C.+40 C (40 F.105 F) LPN, switchable I 483 x 88.1 x 421.5 12.6 kg (27.8 lbs) 14.8 kg (32.6 lbs) 16.3 kg (35.9 lbs) 17.7 kg (39.0 lbs)
Bosch Communications Systems Americas Headquarter Americas Telex Communications, Inc. 12000 Portland Ave South, Burnsville, MN 55337, USA USAPh: 1-800-392-3497 Fax: 1-800-955-6831 CanadaPh: 1-866-505-5551 Fax: 1-866-336-8467 Latin America Ph: 1-952-887-5532 Fax: 1-952-736-4212
Europe, Africa & Middle-East Headquarters EMEA EVI Audio GmbH Hirschberger Ring 45, 94315 Straubing, Germany Phone: +706-0, Fax: +706-265 France: EVI Audio France S.A., Parc de Courcerin, Alle Lech Walesa, F 77185 Lognes, France Phone: +33 1-6480-0090 Fax: +33 1-6006-5103
UK: Shuttlesound, 4 The Willows Centre, Willow Lane, Mitcham, Surrey CR4 4NX, UK Phone: +Fax: +Asia & Pacific Rim Headquarter Asia Telex Communications (SEA) Pte Ltd 38C Jalan Pemimpin Singapore 577180 Tel: (65) Fax: (65) 6319 0620
Japan: EVI Audio Japan, Ltd 5-3-8 Funabashi, Setagaya-ku, Tokyo 156-0055 Tel: +81 (3) 5316-5021 Fax: +81 (3) 5316-5031 Hong Kong: Telex EVI Audio (Hong Kong) Ltd. Room 508-509, 5/F, Topsail Plaza 11 On Shum Street Shek Mun,Shatin HK Phone: +852 2351-3628, Fax: +852 2351-3329
Shanghai: Telex EVI Audio (Shanghai) Co., Ltd. Room 3105-3109, Tower 1 Office Building, 218 Tian Mu Xi Rd., Shanghai, China Postal Code: 200070 Tel: +86 21-6317-2155 Fax : +86 21-6317-3025
2009 Bosch Security Systems, Inc. LIT000354000