Application Example #3, CUT Filter | QSC Audio HPR151W, HPR153F

Application Example #3

This example shows a two-channel (stereo) setup utiliz- ing two subwoofers and two top-boxes.

Audio signals for the Left and Right channels are supplied by the mixer console. This signal source can be just about any variable-output level audio source, such as DJ mix- ers, professional CD players, or computer-based audio signal sources.

Audio output from the mixer is connected to the sub- woofer input of each channel. Each subwoofer’s FULL RANGE LINE OUT connector is used to connect to its respective top-box. Turn ON the top-box’s 100 Hz LOW-

CUT FILTER.

Alternately, the top-boxes could be connected to the sub- woofer’s 100 Hz LOW-CUT OUT and the top-box 100 Hz LOW-CUT FILTER turned off. The only possible issue with this method of connection is unexpected noises (turn-off thumps) if the subwoofer is powered down before the top-boxes. If connected as shown, power sequencing is not an issue.

HPR152F or

HPR153F

Application Example #3 physical diagram.

Channel 1

Left Channel

HPR152F or

HPR153F

Channel 2

Right Channel

Application Example #3 hookup diagram.

Use only high-quality balanced cables for interconnecting the audio equipment.

Ensure the top-boxes have their 100 Hz LOW-CUT FILTER switched ON when connecting to the sub- woofer’s FULL RANGE LINE OUT as a signal source.

Also, be sure to use either the Left or Right (marked L or R) on the subwoofers. If the subwoofer’s input is connected to the Right (R) channel connector and the output to the top-boxes is connected to the Left (L) channel connector, no signal will reach the top-box (no sound from the top-box).

HPR151W or HPR181W

Mixer or Other Audio Source

HPR151W or HPR181W