DB Drive A72500.1 User Manual

OKUR

Due to continuous improvement of the product the Specifications are subject to change without notice.

A775.4
A7125.4
A7300.2
A7750.1
A71100.1
A71500.1
A72000.1
A72500.1

User Manual

• Instalation Instructions / Owners Manual •

OKUR

1. OKUR AMPLIFIER’S SPECIFICATION

1-1. OKUR digital monoblock amplifiers

Load Voltage & THD

4ohm 14.4 volts & 1%
2ohm 14.4 volts & 1%
1ohm 14.4 volts & 1%

Working Voltage
Frequency Response
Signal to Noise Ratio
Damping Factor
Low Level Input
Low Pass Filter
( @ 24dB Slope )
Bass Boost @ 45Hz
Subsonic Filter
( @ 24dB slope )
Phase Shift
Master/slave ( Linkable )
Remte Level Control
RCA line Output
Minimum working impedance

A7 750.1

1 X 175
1 X 375
1 X 750

A71100.1

1 X 225
1 X 550
1 X 1100

8.5~16 Volts
20Hz ~ 250Hz
< 100dB
250 <
6V ~ 0.2V
Variable 35Hz ~ 250Hz

Vairable 0 ~ 9dB

Variable 10Hz ~ 50Hz
Variable 0 ~ 180 degree
Yes
Yes
Yes
1 ohm for single unit
2 ohm for linked

A7 1500.1

1 X 375
1 X 750
1 X 1500

1-2. OKUR 2 and 4channel class AB amplifiers

Load Voltage & THD

4ohm 14.4 volts & 1%
2ohm 14.4 volts & 1%
4ohm bridegd 14.4 volts & 1%

A7 75.4

4 X 60
4 X 90
2 X 180

A7 2000.1

1 X 740
1 X 1300
1 X 2200

A7 125.4 A7 300.2

4 X 110 2 x 300
4 X 170 2 x 450
2 X 340 1 x 600

A7 2500.1

1 X 1300
1 X 2350
1 X 4300

Frequency Response
Signal to Noise Ratio
Damping Factor
Low Level Input
High Pass Filter
( @ 18dB Slope )
Crossover Selector
Low Pass Filter
( @ 18dB Slope )
Bass Boost @ 45Hz
Input Mode Selector
Remote Level Control
RCA line Output
Minimum working impedance

20Hz ~ 30KHz
105dB
200 <
6V ~ 0.2V
Variable 50Hz ~ 5KHz

HP-FULL-LP / BP
Vairable 50Hz ~ 500Hz

Variable 0 ~ 18dB
CH2 - CH4
Yes
Yes
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 ourput 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 control 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 guage.
Minimum impedance is 1 ohm for single unit.
Linked connection’s minimum impedance is 2 ohm.

2

2-2. OKUR 2 and 4channel class AB amplifiers

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 recomended speaker wire is 12 guage.
The minimum impedance is 2 ohm stereo or 4 ohm mono.

3. INSTALLATION

In case you install the OKUR amplifiers by yourself, please read owner's manual
very carefully.
Before you start your installation, please take all steps into consideration.
or, you can have DB Drive or DB Reseach’s authorized dealer to check installation and set
your car audio systems.

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