Setup And Adjustment - Memphis MM900.6V Manual

Gain
The gain control is NOT a volume control. The gain control adjusts the amount of signal required to drive the
amplifier to full output. With the gain at full clockwise rotation, less signal voltage is required to drive the amp to
full output. With the gain at full counter clockwise rotation, more signal voltage is required to drive the amp to full
output. For optimal performance, set the gain control to minimum
High Pass Filter (HPF)
The high pass crossover/filter is designed to remove low frequency information from a speaker. This is generally
used to protect smaller devices from trying to reproduce low frequency information that might damage them. The
crossover frequency is adjustable from 50 Hz to 1KHz and uses 12 dB per octave slope. To engage the HPF simply
slide the switch to the position on the marked HPF. Crossover frequency selection is made by rotating the dial:
clockwise raises the frequency, counter-clockwise lowers the frequency. Most mid-bass or midrange drivers should
be set between 80 and 400 Hz depending on how high the subwoofer(s) plays. For mid-range drivers that are 5" or
smaller we suggest setting the HPF to 120Hz. The HPF can also be combined with passive crossovers on a separate
or coaxial speaker set to provide low frequency protection to the midrange driver, or to form band-pass filter for a
midrange speaker already using a passive low-pass filter.
Low Pass Filter (LPF)
The Lowpass crossover/filter is designed to remove high frequency information from a speaker. This is generally
used to prevent mid bass speakers or subwoofers from trying to reproduce mid and high frequency information
that they are not designed to reproduce. The crossover frequency is adjustable from 30Hz to 250Hz and uses a
12dB per octave slope. To engage the LPF slide the switch to the position marked LPF. Frequency selection is made
by rotating the dial: clockwise raises the frequency and counter clockwise lowers the frequency. Most subwoofers
should be set between 80Hz and 100Hz depending on how low the mid-bass or midrange drivers are capable of
playing.
Full Range
Sliding the selector switch to this position turns off all crossovers and allows a full range signal to pass. The flat
position should be selected when using outboard electronic crossovers.
Bass Boost
Boost should be used with discretion, keeping in mind that electronically enhanced boost places an additional load
on the amplifier and the speakers they are connected to. This control is fully variable from 0 – 12dB.
Use only "MM" Remotes for this amplifier model. The adjustment will increase/decrease the output level of the
amplifier. The remote controller operates the level of the MM600.2V uses a Memphis RG6 remote, MM900.6V uses
Memphis RG7 remote.
Input Mode Switch
(MM900.6V) Place the switch on the number of audio inputs being used. F = FRONT R=REAR S=SUB.

Setup And Adjustment

End Panel Connections
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