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 cabinet’s or the rack case’s 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 amp’s ventilation louvers is not permissible. Without sufficient coo- ling/ventilation, the power amplifier may automatically enter protect mode. Keep ventilation lou- vers 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 +40°C is not exceeded.

8 Owner‘s Manual

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Electro-Voice Q66, Q44, Q1212, Q99 owner manual Operating Voltage, Mains Switch, Mounting, Ventilation

Q99, Q1212, Q44, Q66 specifications

Electro-Voice is well-recognized in the audio industry for its innovative and high-quality sound reinforcement products. Among their impressive lineup, the Q series amplifiers—namely the Q44, Q66, Q1212, and Q99—stand out for their performance, durability, and versatility.

The Q44 is a reliable choice for smaller venues, featuring a lightweight design combined with a high output power of 800 watts per channel at 4 ohms. This amplifier utilizes advanced technology such as a switch-mode power supply, which enhances efficiency and reduces heat generation. The Q44 is ideal for driving passive loudspeakers, offering robust low-frequency response, and is equipped with sophisticated protection circuits to prevent damage from overload or short circuits.

The Q66 builds on the foundation of the Q44, providing higher output power at 1,000 watts per channel at 4 ohms. It is designed for medium-sized applications, whether they are live events, installations, or corporate audiovisual setups. The Q66 features a subwoofer crossover built into the device, facilitating a seamless integration of sub-bass frequencies without the need for external processing. Additionally, the amplifier's sleek front panel provides clear wattage meters and consistent feedback on performance.

For more extensive and complex sound systems, the Q1212 is a powerhouse, delivering up to 1,200 watts per channel at 4 ohms. This model boasts extensive connectivity options, including balanced XLR inputs and speakON outputs, catering to professional setups requiring flexibility. Its advanced thermal management systems ensure operational stability even in demanding environments, making it suitable for large-scale concerts and events.

The Q99 rounds out the series with a compact design that does not compromise on power. With an output of 900 watts per channel at 4 ohms, it provides ample power for various applications. Its lightweight and rack-mountable structure make the Q99 an excellent choice for mobile DJs and touring professionals. The built-in signal indicators and protection features ensure longevity and reliability, critical for on-the-go performance.

All models in the Electro-Voice Q series employ sophisticated Class-D amplification technology, notable for its high efficiency and low thermal output. This technology not only ensures clean and powerful sound but also enhances portability—making them ideal companions for both installation and live sound scenarios. With their various power outputs and features, the Q series offers a comprehensive solution for audio professionals looking to achieve exceptional sound quality.