DB Drive A7 75.4, A7 125.4, A7 300.2, A7 750.1, A7 1100.1 User Manual
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A7 75.4 A7 125.4 A7 300.2
A7 750.1 A7 1100.1 A7 1500.1
A7 2000.1 A7 2500.1
User Manual
Installation Instructions/Owner’s Manual
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DUE TO CONTINUOUS IMPROVEMENT OF THE PRODUCT THE SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE.
WORLD RECORD BREAKING TECHNOLOGY
1. OKUR AMPLIFIER’S SPECIFICATION
1-1. OKUR DIGITAL MONOBLOCK AMPLIFIERS
Load Voltage & THD A7 750.1 A71100.1 A7 1500.1 A7 2000.1 A7 2500.1
4ohm 14.4 volts & 1% 1 X 175 1 X 225 1 X 375 1 X 740 1 X 1300
2ohm 14.4 volts & 1% 1 X 375 1 X 550 1 X 750 1 X 1300 1 X 2350
1ohm 14.4 volts & 1% 1 X 750 1 X 1100 1 X 1500 1 X 2200 1 X 4300
Working Voltage 8.5~16 Volts
Frequency Response 20Hz ~ 250Hz
Signal to Noise Ratio < 100dB
Damping Factor 250 <
Low Level Input 6V ~ 0.2V
Low Pass Filter Variable 35Hz ~ 250Hz
(@ 24dB Slope)
Bass Boost @ 45Hz Variable 0 ~ 9dB
Subsonic Filter
(@ 24dB slope) Variable 10Hz ~ 50Hz
Phase Shift Variable 0 ~ 180 degree
Master/slave (Linkable) Yes
Remote Level Control Yes
RCA line Output Yes
Minimum working impedance 1 ohm for single unit
2 ohm for linked
1-2. OKUR 2 AND 4CHANNEL CLASS AB AMPLIFIERS
Load Voltage & THD A7 75.4 A7 125.4 A7 300.2
4ohm 14.4 volts & 1% 4 X 60 4 x 110 2 x 300
2ohm 14.4 volts & 1% 4 x 90 4 x 170 2 x 450
4ohm bridged 14.4 volts & 1% 2 x 180 2 x 340 1 x 600
Frequency Response 20Hz ~ 30KHz
Signal to Noise Ratio 105dB
Damping Factor 200 <
Low Level Input 6V ~ 0.2V
High Pass Filter Variable 50Hz ~ 5KHz
( @ 18dB Slope )
Crossover Selector HP-FULL-LP / BP
Low Pass Filter Vairable 50Hz ~ 500Hz
( @ 18dB Slope )
Bass Boost @ 45Hz Variable 0 ~ 18dB
Input Mode Selector CH2 - CH4
Remote Level Control Yes
RCA line Output Yes
Minimum working impedance 2 ohm stereo or 4 ohm mono.
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2. OKUR AMPLIFIER’S CONTROL & CONNECTION.
2-1. OKUR DIGITAL MONOBLOCK AMPLIFIERS
INPUT
Connect RCA output cables from the headunit to
OKUR digital amplifiers’ RCA Input.
OUTPUT
Is used when connecting multiple amplifiers
POWER & PROTECTION INDICATOR
Power LED - Green-lit shows normal operation
Protect LED - RED-lit shows general malfunction,
faulty connection or thermal protection
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 digital amplifiers as daisy chain connection
to 2 ohm.
+12V (POWER CONNECTION)
This must be connected to the fuse positive terminal
(+12V) of the battery.
Recommended wire is 4 gauge for A7750.1 &
A71100.1 and 0 gauge for A71500.1, A72000.1,
A72500.1 check the battery voltage
GND ( GROUND CONNECTION )
It is connected to the Negative or ground cables of
the Vehicle.
Recommended wire is 4 gauge for A7750.1 &
A71100.1 and 0 gauge for A71550.1, A72000.1,
A72500.1
REM (REMOTE)
It is connected to switched +12V with a Trigger cable
coming from the head unit
SPEAKER OUTPUTS
It connects amplifier’s terminals 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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2-2. OKUR 2 AND 4CHANNEL CLASS AB AMPLIFIERS
WORLD RECORD BREAKING TECHNOLOGY
INPUT
Connect the RCA output cables from the headunit to
OKUR amplifiers’ RCA Input.
POWER & PROTECTION INDICATOR
Power LED - Green-lit shows normal operation
Protect LED - RED-lit shows general malfunction,
faulty connection or thermal protection
GAIN (6V ~ 0.2V)
The gain control matches the voltage of the
headunit’s RCA line-outs to OKUR amplifiers’ input
section.
HIGH PASS FILTER (50Hz ~ 5KHz @ 18dB/Oct)
Controls the high pass point for the speaker outputs.
CROSSOVER SELECTOR
Selectable @ HP-FULL-LP / BP
LOW PASS FILTER (50Hz ~ 500Hz @ 18dB/Oct)
Controls the low pass x-over point for the speaker
outputs.
BASS BOOST ( 0~18dB @ 45Hz )
Variable @ 0 ~ 18dB
MODE (CH2 / CH 4)
Selectable input setting
REMOTE LEVEL CONTROL PORT
This port is for connecting the remote gain level control.
OUTPUTS
Is used when connecting multiple amplifer to the
same RCA signal
GND ( GROUND CONNECTION )
It is connected to the Negative or ground cables of
the Vehicle.
Recommended wire is 4 gauge for A7300.2 ,
A775.4 & A7125.4
REM ( REMOTE )
Connected to switched +12V remote cable from the
head unit.
+12V ( POWER CONNECTION )
This must be connected to a fused positive terminal
(+12V ) of the battery.
Recommended wire is 4 gauge for A7300.2 ,
A775.4 & A7125.4
FUSES
Protect the amplifiers power supply from any shorts.
Any use of overvalued fuses will void all warranty.
SPEAKER OUTPUTS
The minimum recommended speaker wire is 12 guage.
The minimum impedance is 2 ohm stereo or 4 ohm
mono.
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