Diamond Audio Technology D5 5.1 Manuale d'uso - Pagina 10

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F GAIN

F HP

INPUT

GAIN

SUB GAIN

BYPASS

SUB

CROSSOVER

All Diamond Audio D5 amplifiers employ one of the most flexible internal

crossover sections currently available in mobile audio. They feature second-

order 12dB/octave Butterworth filters. These filter networks sum to a flat

response at their -3dB break points. This results in a smooth and seamless

transition from one frequency band to the next. Butterworth filters provide

maximally flat frequency responses when compared to other filter structures.

All crossover controls are mounted on the signal input side of the amplifier.

The D5 5.1 front, rear, and center crossovers are fixed highpass filters set at 80

Hz. Each of these crossovers has an individual network that can be defeated

by simple switch selection. When switched off, they are completely out of the

audio path. The sub channel crossover features fully selectable and adjustable

sub-sonic, 17 - 80 Hz, and lowpass, 60 - 250 Hz, filters. The sub channel

crossover also features a 180 degree phase inverter and gain bypass.

GAIN

This control matches the output voltage of the source unit or processor to the

amplifier inputs. Rotating this control to the "MIN" mark (counterclockwise)

configures your D5 amplifier to accept input voltages as high as 5V RMS. This

control should be set as low as possible. The basic procedure for setting input

gains is as follows:

Adjust all amplifier gain controls to just above the minimum setting

(fully counterclockwise).

Using the highest quality source (usually CD) play some music and

slowly turn up the source unit until you can hear distortion. Now turn

down the volume until the distortion stops. This is your maximum

source unit level.

Turn up the amplifier gain until audible distortion starts. Turn down

the gain to the point JUST BELOW the start of the distortion.

Repeat step 3 for all channels on your D5 5.1.

GAIN BYPASS SELECT

Pushing this button "IN" bypasses the gain stage on the sub channels only.

This is used in systems with a pre-amp section before the sub channels or to

slave those channels to a master amplifier. Leaving this button "OUT" is the

default and uses those channels gain as a normal input level match.

C SLAVE

C GAIN

C HP

R SLAVE

R GAIN

R HP

SUB

SUB SONIC

SUB

SUB LP

SUB INV

SLAVE

FREQ

SONIC

FREQ

FL +

FL -

FR +

FR -

RL +

RL -

RR+

RR -

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