OKUR
A775.4
A7125.4
A7300.2
A7750.1
A71100.1
A71500.1
A72000.1
A72500.1
User Manual
• Instalation Instructions / Owners Manual •
Due to continuous improvement of the product the Specifications are subject to change without notice.
OKUR
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 |
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4ohm |
14.4 volts & 1% |
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1 X 175 |
1 X 225 |
1 X 375 |
1 X 740 |
1 X 1300 |
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2ohm |
14.4 volts & 1% |
1 X 375 |
1 X 550 |
1 X 750 |
1 X 1300 |
1 X 2350 |
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1ohm |
14.4 volts & 1% |
1 X 750 |
1 X 1100 |
1 X 1500 |
1 X 2200 |
1 X 4300 |
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Working Voltage |
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8.5~16 Volts |
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Frequency Response |
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20Hz ~ 250Hz |
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Signal to Noise Ratio |
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< 100dB |
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Damping Factor |
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250 < |
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Low Level Input |
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6V ~ 0.2V |
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Low Pass Filter |
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Variable 35Hz ~ 250Hz |
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( @ 24dB Slope ) |
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Bass Boost @ 45Hz |
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Vairable 0 ~ 9dB |
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Subsonic Filter |
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( @ 24dB slope ) |
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Variable 10Hz ~ 50Hz |
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Phase Shift |
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Variable 0 ~ 180 degree |
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Master/slave ( Linkable ) |
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Yes |
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Remte Level Control |
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Yes |
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RCA line Output |
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Yes |
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Minimum working impedance |
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1 ohm for single unit |
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2 ohm for linked |
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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% |
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
A7 75.4 |
A7 125.4 |
A7 300.2 |
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4 X 60 |
4 X 110 |
2 x 300 |
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4 X 90 |
4 X 170 |
2 x |
450 |
2 X 180 |
2 X 340 |
1 x |
600 |
20Hz ~ 30KHz 105dB
200 <
6V ~ 0.2V
Variable 50Hz ~ 5KHz
HP-FULL-LP / BP
Vairable 50Hz ~ 500Hz
Variable 0 ~ 18dB |
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CH2 - CH4 |
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Yes |
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Yes |
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2 ohm stereo or 4 ohm mono. |
1 |
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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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