Hertz HDP 1, Руководство пользователя

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9
TOP PANEL CONTROLS: SWITCHES AND ADJUSTMENT CONTROLS
LEVEL (0.3 ÷ 5V): Input sensitivity adjustment control
.
Set to 1 position. Use a CD as source, increase head unit volume
until output distorts, then decrease volume by 1 step in order to
eliminate distortion. Turn LEVEL up until sound becomes
distorted, then turn LEVEL down a bit for optimum sound.
REMOTE VOLUME CONTROL (ON - OFF):
Activate
ON
or deactivate OFF external remote volume control. Connect
external adjustment control to front panel proper connectors.
SUBSONIC: (18 Hz ÷ 40 Hz): Crossover point (Hi-Pass filter)
adjustment . Rotating the knob you can select any frequency
between 18Hz and 40Hz. The frequencies below the crossover
point will be attenuated at 24dB/Oct.
This control is useful to remove ultra-low frequencies present in
some audio signals which do no contribute to music information
and might cause distortion or abnormal warming.
LO-PASS (40 Hz ÷ 150 Hz): Crossover point adjustment .
Rotating the knob you can select any frequency between
40Hz and 150Hz. The frequencies above the crossover point
will be attenuated at 24dB/Oct.
PHASE (0° ÷ 180°): Phase signal rotation point adjustment
.
Rotating the knob you can select any phase angle between
0° and 180° (phase reversal). The PHASE angle is centered
at 80Hz. For frequency beyond or below this value, phase angle
decrease.
While listening to the front loudspeaker (driven from other
amplifier), adjust PHASE in order to have a good bass response.
ON: Power LED . It lights up when you turn on the amplifier.
If all LEDs (6) (7) (8) (9) turn on at the same time, the amplifier will
shut down and you will have to contact a service centre.
TH: Terminal status LED . It lights up when thermal protection
is active, above 85°C. The amplifier shuts down until the chassis
temperature goes below 75°C.
OVL:
O
verload status LED
. It lights up when overload occurs
on the power output terminals. The amplifier goes in muting for
3 seconds and this LED starts flashing until you turn off the
amplifier.
REMOVE THE CAUSE OF OVERLOAD
.
SPK: Speaker status LED . It lights up when a speaker touches
the car body. The amplifier goes in muting for 3 seconds and
this LED starts flashing until you turn off the amplifier.
REMOVE THE CONTACT BETWEEN SPEAKER WIRE AND
CAR BODY.
1
2
3
4
5
1 2
6
7
8
9
3 4
8
6
7
9
5
REMOTE
VOLUME
CONTROL
OFF ON
ON OVL
TH SPK
1
3 4
2 5
max
LEVEL
18 40
22 30
SUBSONIC LOPASS PHASE
40 150
70 120
180 0
HDP1
HDP 1
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