7
17 - 18 Mono/Stereo selector
For switching the amplifier into 4-channel operation mode both
switches must be in stereo position (position A). To use the amp
in 3-channel mode (front / sub), the front channel has to be set
in stereo and the sub channel to mono (position B).
Warning:
The impedance of the woofer in bridged mode must not be lower
than 4 Ohms!
19 Speaker terminals for channels A and B
To connect the speaker cables.
20 Speaker terminals for channels C and D
To connect the speaker cables.
Never connect the loudspeaker cables with the car chas-
sis gound. It damages your amplifier.
All speaker systems
must be connected in-phase, this means plus to plus and minus
to minus. The plus pole is normally marked on the speaker. In
addition, the amplifier can operate channels A and B as well as C
and D in stereo or mono mode. The amp also can be connected
for tri-mode use with one pair of wires (AB or CD) and have a
third speaker connected in mono mode.
21 Frequency level control for highpass of CH A and B
Control for the adjustment of the crossover frequency from 15Hz
to 4 kHz.
22 Frequency level control for lowpass of CH A and B
Control for the adjustment of the crossover frequency from 15Hz
to 4 kHz.
23 Frequency level control for highpass of CH C and D
Control for the adjustment of the crossover frequency from 15Hz
to 4 kHz.
TECHNICAL DATA PRECISION P400
Cont. power rating at 4 Ohms per channel . . . . . . . . . . . . . . . . . . . . . 4 x 110/190 Watts RMS/Music
Cont. power rating at 2 Ohms per channel . . . . . . . . . . . . . . . . . . . . . . 4 x 175/300 Watts RMS/Music
Cont. power rating bridged at 2 Ohms per channel . . . . . . . . . . . . . . . . 2 x 350/595 Watts RMS/Music
Frequency response . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Hz - 20 kHz
Bassboost . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0 - 9 dB
Bassboost center frequency range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40 - 120 Hz
Setting range highpass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Hz - 4 kHz
Setting range lowpass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Hz - 4 kHz
Total harmonic distortion (THD) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . < 0,006%
TIM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . < 0,01%
Signal to noise ratio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . > 95 dB
Damping factor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . > 600
Input impedance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 kOhms
Input sensitivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .300 mV - 8,5 V
Fuse . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 x 25 Ampere
Dimensions (H x W x D) in mm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 x 432 x 240
Weight net. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4,7 kgs
24 Frequency level control for lowpass of CH C and D
Control for the adjustment of the crossover frequency from 15Hz
to 4 kHz.
24 - 26 CPS - colour protection system
The LEDs show the operation status of the amp. Green=O.K.;
Yellow=the speakers wires are shorted to ground; Red=overhea-
ted. If the amp shuts off due to overheating it will take some time
(depending on the outside temperature) until it switches on
again.
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