Diamond D3 Product Owners Manual page 9

Note: It is important that a 4 Ohm minimum total speaker impedance load is observed
when bridging the amp! If an impedance load of less than 4 Ohms is used, you will
eventually damage your amplifier and void your warranty.
RCA
FRONT/REAR INPUTS
The RCA cables from your source unit should be inserted here.
Crossovers
The Diamond D3 400.4 amplifier features second-order 12dB/octave electronic
crossovers that are selectable for highpass or lowpass modes. These filters are then
adjustable between 55 and 550 Hz.
Bass Boost
Acts like an equalizer with an adjustable gain fixed at 45 Hz. Adjust from left to right
clockwise to give as much as 18 dB of boost at that frequency. If there is a noticeable
lack of low end extension in the system, use this to boost the bass.
Caution:
If any unusual noise like popping or crackling, or unwanted distortion occurs
when adjusting the bass boost, immediately turn the boost down to avoid damaging your
speakers.
Crossover Mode
Switches electronic crossover between off, lowpass, or highpass modes. When in HP or
LP mode, the 12 dB/oct crossover is implemented at the frequency set on the frequency
knob.
Crossover Frequency
Adjustable left to right clockwise from 55 Hz up to 550 Hz.
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