6
HMD8 DSP/
USER’S MANUAL
4. CONNECTION PANEL - DESCRIPTION
POWER.
+ Power
(11-15 VDC or 22-34 VDC according to POWER silk-screened value)
: connection terminal for power supply
positive pole.
The jack accepts a stripped cable up to 15mm / 0.6” with maximum section of 8 AWG (
∅
3,2mm / 0.12”). For better
power transfer we recommend using cables with the largest possible cross-section and with the same cross-section
as the cable connected to the negative pole.
- Power (Ground):
connection terminal for the negative power supply pole of the amplifier. Connect here the negative
battery cable or a cable connected to the metal part of the vessel chassis. The socket will take a stripped cable up to 15mm / 0.6”
with a maximum section of 8 AWG (
∅
3,2mm / 0.12”). For better power transfer, we recommend using cables with
the largest possible section and with the same section as the cable connected to the positive pole. In order to correctly
connect the ground (-), use a screw that is already present on the metal part of the vessel; if necessary, remove any
paint residue or grease, using a tester to make sure there is continuity between the negative terminal (-) on the battery
and the mounting point. If possible, connect all of the grounds on the audio components to the same grounding point.
This helps to reduce most of the interference than can occur in audio reproduction.
WARNING:
make sure the connection polarity is as indicated on the terminals. A misconnection may result in
damage to the device. After applying power, wait at least 10 seconds before turning the device on.
1
4
HMD8 DSP
HMD8 DSP
0 1
2
3
4
5
6
7
USB
PRESETS
OPTICAL IN
SUB OUT
CTRL
SPEAKER IN
PRE IN
DRC
UPGRADE
OFF ON
SPEAKER OUT
13
9
10
3
1
7
4
5
8
12
11
2
6
FUSE x 2
POWER
