Genesis Advanced Technologies S4/8 owner manual Placing and Connecting Multiple Subwoofers

a b s o l u t e f i d e l i t y ™

Tuning for Low Frequency Effects (LFE)

The LFE input has a separate gain structure and bypasses the crossover in the subwoofer. Hence, it should be set-up separately from the main speaker augmentation function.

A simple way to set up the S4/8 for LFE is to use the test and level signal available in most home theater processors and multi-channel players, and test discs. Many DVD’s include a THX calibration option that has a set of test tones for speaker level adjustment.

Using a high quality sound pressure meter, set the LFE gain so that the S4/8 matches the volume of the main speakers.

If you are using multiple subwoofers, you will need to set each subwoofer in turn. As each location of the subwoofer may have different bass levels caused by room-related gain, adjust each separately. To do this, you first set the LFE gain on all your subwoofers to 1 (fully anti-clockwise).

Then, using a LFE test tone and a sound pressure meter set the LFE gain on the first subwoofer to 3dB down (for 3 subwoofers, 5dB down if using 5 subwoofers) from the reference volume of the main speakers. Write down the setting, and then turn the LFE gain back to zero.

Go to the next subwoofer and repeat the process until you have the LFE GAIN settings of all your subwoofers. When you have all the settings, go to each subwoofer and turn up the LFE GAIN to the setting you noted down. Re-check the bass volume with all subwoofers on.

If the bass response is too high or too low, use the subwoofer level setting on the processor to match the LFE volume to the volume of the rest of the speakers – or do it all again using a higher or lower setting for each subwoofer.

Placing and Connecting Multiple Subwoofers

The combination of LFE Blend™ and daisy-chained LFE in all Genesis ServoSub™ models means great flexibility. They are all readily suited to multiple subwoofer installations when used in a multi-channel music or home theater system. One Genesis ServoSub can be used to extend the frequency response of any two main speakers, AND at the same time deliver the LFE channel.

S4/8 Owners Manual Ver 0.1

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