DB Drive A7 3500H.1, A7 3500L.1, A7 7500.1 Panduan Pengguna - Halaman 3
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GAIN (6V ~ 0.2V)
Matching the output voltage of the headunit's RCA
line-outs to OKUR amplifiers' input section.
SUBSONIC FILTER (10Hz ~ 50Hz @ 24dB/Oct)
Control the high Pass point for the speaker outputs
to eliminate extreme low frequencies that can
damage your subwoofers.
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 ~ 250Hz @ 24dB/Oct )
Controls the low pass point for the speaker outputs.
PHASE (0 ~ 180 degree )
It controls phase from 0 ~ 180 degree.
OUTPUT MASTER / INPUT SLAVE
OUTPUT MASTER / INPUT SLAVE connection makes
OKUR Competition amplifiers as daisy china connection
to 2 ohm.
3. INSTALLATION
In case you install the OKUR Competition amplifiers by yourself, please read owner's manual very carefully.
before your installation. please take all steps into consideration. 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 OKUR competition amplifiers or making any
connections. Check the battery and alternator ground ( - ) connections. Make sure they are properly connected
and free of corrosion before selecting a mounting location. Please take some concerns into consideration
with cooling efficiency and safety.
3-2. MOUNTING PREPARATION
The OKUR competition amplifiers use a spcially designed heat radiation heatsink to avoid excessive heat
from OKUR circuitry. But for better heat dissipation, it is good to find the mounting location where you can install
OKUR vertically with the heatsink fins and better air flow around heatsink.
For the safety, You have to find a dry and well ventilated location and make sure any cables and drilling car
equipment are not interfere with mounting location. Be sure the mounting location and drilling of pilot cables
will not present a harzard to any cables, control cables, fuel lines, fuel tanks, hydraulic lines or other vehicle
systems or components.
3-3. +12V, GND, REM CONNECTION.
12V ( POWER CONNECTION )
Before mounting OKUR competition amplifiers, disconnect the negative ( - ) wire from battery to protect any
accidential damage to amplifier and audio system. A7 3500L.1. A7 3500H.1 and A7 7500.1 are designed to
use minimum 0 gauge cables.
Connect the power cables to power terminal labeled as +12V. A7 3500L.1, A7 3500H.1 and A7 7500.1 are
not equipped with fuses so you need to install external fuses.
In order to install external fuses, connect one end of fuse holder to the power cable and the other end of
fuse holder to positive battery within 18in of the same 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 use fuses and fuse holders adequate for the current draw application.
+12V (POWER CONNECTION)
This must be connected to the fuse positive terminal
(+12V) of the battery.
Recommenede wire is 0 gauge for A7 3500L.1,
A7 3500H.1 & A7 7500.1.
Check the battery voltage.
GND ( GROUND CONNECTION )
It is connected to the Negative or ground cables of
the vehicle.
Recommenede wire is 0 gauge for A7 3500L.1,
A7 3500H.1 & A7 7500.1.
REM (REMOTE)
It is connected to switched +12V with a trigger cable
coming from the head unit.
SPEAKER OUTPUTS
It connects amplifier's terminal to subwoofer
speakers.
Minimum speaker wire is 12 gauge.
Minimum impedance is 1 ohm for single unit.
Linked connection's minimum impedance is 2 ohm.
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