EPOS M Series Low Level Input, Low Level Output, High Level Input, High Level Output, Volume

Low Level Input

(See connection comments at the beginning of page 4) If your amplification system has a dedicated subwoofer output it should be connected to either the left or right low level input. If you have a mono connection from your amplifier you may use either connection.

Low Level Output

The low level output is filtered by the M subwoofer circuitry to provide a signal back to the L&R front speakers that has had its low frequencies removed. The M subwoofer will provide these low frequency signals exclusively, to prevent a conflict.

High Level Input

If your receiver system does not have a dedicated subwoofer line output, your subwoofer must be connected via the high level input terminals on the rear panel. Connection should be made from the speaker terminals on your amplification system to the High Level Input Connections.

Note: Only connect using line level inputs OR high level inputs.

DO NOT USE BOTH METHODS OF CONNECTION AT THE SAME TIME.

High Level Output

The high level output is filtered by the M subwoofer circuitry to provide a signal back to the L&R front speakers that has had its low frequencies removed. The M subwoofer will provide these low frequency signals exclusively, to prevent a conflict. It is possible to run a connection from the high level output to your speakers if you do not have a direct connection from your receiver.

Volume

As a starting point, set the output of your receiver or decoder to 0dB level and then adjust the level of the subwoofer to suit the room using the volume control on the rear panel. Thereafter, small adjustments can be made more easily using the volume control on your receiver, via its remote control, rather than adjusting the volume from the back of the M subwoofer.

Low Filter

Adjustment is necessary to extend or reduce the low frequencies the subwoofer is able to produce so that it can compensate for the small size of the M subwoofer and your room acoustics. Some movie passages contain massive amounts of low frequency information at intervals, so care should be taken not to set the volume and low filter such that it causes distortion or limiting, due to being played too loud. It is better to use two subwoofers at a lower level setting than over-drive one. Your room size and personal sound preferences will determine how much sound pressure level (SPL) is required to create a realistic performance.

N.B. Not everyone will appreciate the effect of sub-sonic movie effects. Even if you think they are great, please remember that low frequencies travel through walls much more easily than high frequencies, so please give a thought to neighbours or other family members who don't share your passion.

Hi-Filter

Adjustment is necessary to match the M subwoofer to the remaining speakers in your system. As all speakers have a different low frequency range, depending on their size and how many drivers they use, it will be necessary to adjust the upper roll over point of the M subwoofer to better integrate with the output of the front and centre channel speakers.

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