Horn Rotation

The coverage angles for each model, as shipped from the factory, are show in the specifications section. If desired the high-frequency driver/horn assembly can be rotated 90° in order to change the coverage angle planes.

Example: An MD-FP122/64r as shipped from the factory has a nominal coverage of 60° in the horizontal plane and 40° in the vertical plane when the enclosure is oriented normally (vertically, as shown at the right). To change the coverage to 40° in the horizontal plane and 60° in the verti- cal plane, the high-frequency driver/horn assembly would have to be removed, rotated 90°, and reinstalled.

How to Rotate the Horn

Note! It is always best to have an assistant when working with large assemblies such as this enclosure. The grill assembly is under tension when installed! Be sure to temporarily secure the grill with tape or have an assistant hold the grill edge while removing its retaining screws.

1- Remove the four screws from one side of the grill while having an assistant hold the grill from springing free. Remove the four screws from the other side of the grill. Place the grill and retaining screws aside.

2- Remove the eight horn retaining screws. Carefully lift the horn from its mounting re- cess while being careful not to tear or pull away the foam gasket between the horn and enclosure.

3- Rotate the horn to the desired position and set back into its mounting recess, being sure the gasket is properly positioned.

4- Install the eight horn retaining screws. Do not fully tighten the screws until all have been installed and finger-tightened. This will help to prevent the chance of cracking the horn. Fully tighten the retaining screws.

5- Position and align the grill assembly for reinstallation. Install four retaining screws on one side; do not fully tighten. carefully bend the grill around the front of the enclosure and install the remaining four retaining screws. It is easier to have an assistant hold the grill in place while installing the final four screws.

Grill retaining screws are to be torqued to 30-35 pound inch (0.35 -0.40 kilogram meter) Horn assembly retaining screws are to be torqued to 40 pound inch (0.46 kilogram meter)

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QSC Audio MD-FP122/94r, MD-FP122/64r user manual Horn Rotation, How to Rotate the Horn
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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.
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