02
GAIN (6V ~ 0.2V)
Matching the output voltage of the headunit’s RCA
li
ne-outs to OKUR amplifiers’ input section.
SUBSONIC FILTER (10Hz ~ 50Hz @ 24dB/Oct)
Control the high Pass point for
the spea
ker outputs
to eli
minate extreme low frequencies that can
damage your speakers.
BASS BOOST (0~9dB @ 45Hz)
It boosts the bass 0 ~ 9dB
REMOTE LEVEL CONTROL PORT
This port is for connecting remote gain level control
LOW PASS FILTER (35Hz ~ 10KHz @ 24dB/Oct )
Controls the low pass point for the speaker outputs.
PHASE (0 ~ 180 degree )
It controls phase from 0 ~ 180 degree.
+12V (POWER CONNECTION)
This must be connected to the fuse positive te
r
minal
(+12V) of the b
atte
ry.
Recommenede wire is 4 gauge or thicker
Check the batte
ry voltage.
GND ( GROUND CONNECTION )
It is connected to the Nega
tive or ground cables of
the vehicle.
Recommenede wire is 4 gauge or thicker
REM (REMOTE)
It is connected
to sw
itched
+12V w
i
th a trigger cable
coming from the head unit.
SPEAKER OUTPUTS
It connects a
mplifier’s terminal to subwoofer
speakers.
Minimum speaker wire is 12 gauge.
Minimum impedance is 1 ohm for single unit.
Linked connection’s minimum im
pedance is 2 ohm.
3. INSTALLATION
In case you install the amplifier by yourself, please read owner’s manual very carefully before your installation
Please take all steps into consi
d
eration or, you can have DB Drive or DB Research’s authorized dealer to check
installation and set your car audio systems.
3-1. MOUNTING PREPARATION
Disconnect the negative ( - ) battery cable before mounting your amplifier or making any connections. Check
the battery and alternator ground ( - ) connections. Make sure they are properly connected and free of
corrosion before se
l
ecting a mounting location. Please take some concerns into consideration with cooling
efficiency and safety.
3-2. MOUNTING PREPARATION
The A7PRO2.5K amplifier uses a specially designed heat radiation heatsink to avoid excessive heat
from circuitry. But for
bette
r heat dissipation, it is good to find the mounting location where you can install
vertically with the he
atsink fins and bette
r air flow around heatsink.
For the safety,
Y
ou have to find a dry and well ventilated location and make sure any cables and drilling car
equip
m
ent are not interfere with mounting location. Be sure the mounting location and drilling of pilot cables
wi
l
l not present
a
harzard to any cables, control cables, fuel lines, fuel tanks, hydraulic lines or other vehicle
system
s or components.
3-3. +12V, GND, REM CONNECTION.
12V ( POWER CONNECTION )
Before mounting amplifier, disconnect the neg
a
tive ( - ) wire from battery to protect any accidential damage to
amplifier and audio system. A7PRO2.5K use mini
m
um 4 gauge cables.
Connect the power cables to power terminal labeled as +12V. A7PRO2.5K is not equipped with fuses so yo
u
need to install exte
rnal fuses.
In order to install external fuses, connect one en
d of fuse
holder to the power cable and the other end of
fuse holder to positive battery within 18in of the s
a
me cable gauge. This fuse location will protect the system
and the vehicle against the possibility of a short circuit in
the power cable.
Be sure to
u
se fuses and fuse holders adequate for
the cu
rrent draw application.
www.dbdrive.net
Summary of Contents for A7PRO 2.5K
Page 6: ...P...
