F E A T U R E S

BH Commercial loudspeakers consist of two models, the A-615-70 and the MC-615-70. Both models incorporate metal enclosures to reinforce bass frequencies allowing a deeper and more controlled bass response. Both

models also utilize an acoustic suspension design and offer operation in either 8 Ohm or 70 volt modes.

A powerful magnet, extended voice coil and bumped back plate give the bass/midrange drivers high excursion capability. This ensures accurate dynamic reproduction. The MC-615-70 uses a proprietary aluminum woofer and tweeter. The special aluminum cone material combines stiffness, low mass and self damping properties in a manner that allows virtually uncolored presentation of program material. Both tweeters feature Ferro FluidTM liquid cooling to allow greater power handling.

Steep acoustic slope crossovers are used to integrate drivers. The use of steep crossover slopes allows high power handling, minimizes driver interaction anomalies, and maximizes the clarity with which each driver is able to produce its respective frequency band. Sophisticated computer modeling techniques are used extensively in the RBH loudspeaker design process.

A switch connected to the tweeter allows you to custom tailor the sound to your tastes. This switch is located next to the woofer on the front baffl e of the speaker and has three positions: +3dB, 0, -3dB. The +3 position increases output of the tweeter, the -3 position decreases the output of the tweeter relative to the woofer. The 0 position is the factory setting and generally provides the most natural response from the speaker.

The use of a 70 volt transformer allows many speakers to be used together by running a connecting wire from one speaker to the next, without concern for the impedance seen by the amplifier. A 70 volt amplifi er must be used to accomplish this. Please refer to the following pages for instruction and wiring diagrams to properly install a 70 volt system.

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