AC Mains

Installation (continued)

Cooling

This product’s internal power amplifier produces some heat as a normal condition of operation. Allow a minimum of 4” (100mm) clearance at cabinet back for adequate ventilation, and avoid exposing to hot lights or direct sunlight. For ambient temperatures below 104°F (40°C) the fan will normally remain off. Between 104°F (40°C) and 122° (50°F) the fan will run for increasing periods of time. Above 130°F (55°C) the internal overheating protection will begin to operate. The unit will reduce its gain, and possibly mute. If the fan appears to be running constantly, try to reduce the ambient temperature to ensure full performance.

Keep anything that might restrict airflow away from the rear of the enclosure (i.e draperies, fabric, etc...).

Do not install enclosures with their rear panels exposed to direct sunlight. Direct sunlight will heat the amplifier module and reduce its ability to produce full output. Install sunshades if the application merits.

Maximum ambient temperature for full performance to specification is 45° C. (113° F.).

Do not install enclosures where exposed to rain or other water sources. The enclosure is not weatherproof. Outdoor installations must provide protection from the elements.

AC Mains Connection

Orient the PowerCon connector with the PowerCon socket located on the rear panel of the loud- speaker. It is keyed and will only fit into the socket when aligned properly. Insert the connector fully and rotate clockwise until the locking mechanism engages.

The correct AC line voltage is shown on the serial number label, on the rear panel. Connecting to the wrong line voltage may damage the amplifier or increase the risk of electric shock.

AC Mains Disconnection

To remove the connector, pull back on the metal locking tab and turn the connector counterclockwise until it stops, then pull to remove the connector form the socket.

Power Switch

Push in on the top of the rocker switch to apply AC mains power to the powered loudspeaker. Push in on the bottom of the rocker switch to turn the powered loudspeaker off.

When turned on, the blue Power indicator LED and the red LIM (limiter) indicator LED will illuminate; after a few sec- onds the red LIM indicator will extinguish.

LED Power Indicator

The blue LED Power indicator will illuminate when the AC Power switch is in the “ON” position, the AC mains power cord is connected properly, and the AC mains are functioning properly. The LED Power indi- cator will extinguish when the AC Power switch is in the “off” position or AC mains power has been removed from the loudspeaker.

If the Power indicator does not illuminate when the Power switch is placed in the “on” position, verify the AC mains line cord is properly attached to the loudspeaker and plugged into the AC outlet. Verify the outlet is functioning properly.

If the AC mains cordset is serviceable and the AC mains outlet is operating properly, but the loudspeaker fails to operate, the loudspeaker may require servicing. Contact QSC’s Technical Services department.

MD-FP122/64r, MD-FP122/94r specifications

QSC Audio has long been recognized for its commitment to delivering innovative audio solutions tailored for professional applications. Among its standout offerings are the MD-FP122/94r and MD-FP122/64r loudspeakers, both of which are designed to meet the rigorous demands of live sound reinforcement and installation projects.

At the core of these models is their exceptional acoustic design. The MD-FP122/94r features a 12-inch low-frequency driver complemented by a 1.75-inch high-frequency compression driver mounted on a unique waveguide. This configuration allows the speaker to deliver impressive clarity, depth, and coverage, making it highly effective for both live performances and permanent installations. The MD-FP122/64r, while sharing a similar foundation, is optimized for different applications, featuring a 64-degree dispersion pattern that enhances audience coverage within various venue sizes.

Both models utilize advanced materials in their construction, ensuring durability without compromising audio quality. The enclosures are built using high-density plywood that minimizes unwanted resonance and vibration, resulting in clearer sound reproduction. Additionally, both speakers come equipped with a robust, weather-resistant finish, allowing them to withstand the rigors of outdoor environments.

The MD-FP series also supports QSC’s proprietary technology, including their PowerWave™ design. This sophisticated approach maximizes the efficiency of the low-frequency driver, providing enhanced power handling and extending overall performance. Dynamic range is also optimized, allowing users to experience a full spectrum of audio, from the softest whispers to the most thunderous bass.

The integration of user-friendly features further enhances the versatility of the MD-FP122/94r and MD-FP122/64r. These speakers include multiple mounting options to accommodate various installation scenarios, making them suitable for both portable and fixed applications. Additionally, the models are designed to work seamlessly with QSC's Digital Signal Processors (DSP), allowing for tailored tuning to meet specific acoustic needs and ensuring optimal performance across different settings.

In summary, QSC Audio's MD-FP122/94r and MD-FP122/64r loudspeakers exemplify high-quality design and innovative technology. With their powerful performance, durable construction, and versatile application possibilities, these models represent an excellent choice for audio professionals seeking reliable and high-fidelity sound reinforcement. Whether for touring events or permanent installations, they provide the level of performance required to elevate any audio experience.