Power lock, Qbass, Qbass plus – Precision Power DCX 300.4 User Manual
Page 18: 1 and qbass, 2 freq.: use these switches, Dcx 800.5 front plate diagram
DCX 800.5 FRONT PLATE DIAGRAM
1. Cooling Plenums: Maintain a minimum 2” clearance around
cooling plenums for proper amplifier cooling.
2. Sub Speaker Connector: Plug in the
PowerLock
TM
connector
here.
3. Rear Speaker Connector: Plug in the
PowerLock
TM
connector
here.
4. Front Speaker/Remote Connector: Plug in the
PowerLock
TM
connector here.
5. -12dB Attenuation Switch: Push this switch ‘IN’ for high voltage
input (4V-12V) capability. This button must be pushed ‘IN’ for use
with speaker level input on common ground head-units or for high
voltage line drivers.
6. Sub Input: Plug in the front RCA leads from your source unit
here.
7. Rear Inputs: Plug in the rear RCA leads from your source here.
8. Front Inputs: Plug in the front RCA leads from your source input
here.
9. QBASS
TM
1 and QBASS
TM
2 Freq.: Use these switches,
QBASS
TM
1
and
QBASS
TM
2
to program the
QBASS PLUS
TM
circuit
frequency.
10. Front Gain: Use this control to match the output level of the
source unit to the front channel of the amplifier.
11. Front Freq. Control: Move this detented control in a clockwise
direction to adjust the front crossover frequency from 30Hz to4kHz.
SUB
REAR
FRONT
IN
IN
IN
R
L
QBASS FREQ
-12dB
2 1
GAIN
MIN MAX
FREQ
30
4K
ATT
SOURCE
FRONT
FULL/LP/HP
FULL/LP/HP
INT
EXT
SOURCE
GAIN
MIN MAX
FREQ
30
4K
REAR
FULL/LP/HP
GAIN
MIN MAX
FREQ
30
4K
SOURCE
FULL/LP/HP
SUB
SUM
SUB
FR- FR+ REM FL+ FL-
BRIDGED
RR- RR+ RL+ RL-
BRIDGED
- - + +
SUB
8
7
6
9
10
11
13
14
15
16
5
4
3
2
18
19
20
17
21
1
12
DCX 800.5
Front Panel
17