Kobble Digital Electronic AK2-1000, Owner'S Manual

Specification

09

AK series professional audio power amplifier

Frequency

Response

(

at

1

Watt

)

Total

Harmonic

Distortion

(

THD

)

Intermodulation Distortion60Hz

  and

7KHz at

4

:

1from

full

rated 

              output

to

 -

30dB

Slew

Rate

Voltage

Gain

Damping

Factor

(

8ohms

)

10Hz

-

      400Hz

Signal-to-Noise Ratio (below 
rated power,20Hz

to

20kHz

.

A

-

weighted

)

Crosstalk

(

below

rated

power

)

  At

1kHz

  At

20kHz

Input Sensitivity for full 
    rated power at 8

Ω

Input impedance(nominal)  
               Balanced
             Unbalanced

1kHz

(

HIA

)

with0

.

5

%

THD

4

Ω 

stereo(per channel)

8

Ω 

bridge

mono

Rated power /model

Performance

Construction

Ventilation

Protection

Cooling

Power cord specification

 Chassis size( unit mm)

Net weight

8

Ω 

stereo(per channel)

20Hz-20KHz,+0-1dB

<0.5%,20Hz-20KHz

=/<0.35%

>20V/us

>200

>100dB

-75dB

-58dB

0.775V

or  1.4V

20K ohms

10k ohms

AK2-700

AK2-1300

AK2-1500

32.8dB

35dB

36dB

37.8dB

38.3dB

AK2-500

1900W

2250W

AK2-1000

3350W

4350W

4600W

7

.

5kg

482x227x88

2x950W

2x1650W

2x1100W

2x2100W

2x2300W

2x500W

2x1000W

2x700W

2x1380W

2x1520W

Protection against short circuits, no-load, on/off muting, RF interference. 

Flow-through ventilation from front to back

Internal heat sinks with forced air. Fan cooled, speed regulated, 
thermal protection

Plug

Wire:

：

10A

，

250V

3x1

.

0mm

Power switch

: It can turn on/off the amplifier. When turn on, the POWER 

LED lights.

SIG

POWER

Fault LED

: When circuit protection works, the LED will light, especially 

when the heat-sink overheat or detect the DC voltage in the amplifier, 
the LED will light. Turn on the amplifier within three seconds, the 
amplifier is ready to work, the LED will shine. When finish start or the 
problem is removed, the LED will extinguish, and resume working 
normally.

FLT

CLIP

Clip LED

: When the output signal distortion of the corresponding 

channel exceeds 1%, the LED will light, because of the signal level 
is too high, and have been cut-off.

Signal LED

: when there is the input signal, the LED will light, if not, 

please check the gain settings, if necessary, can increase the gain. 
Check the input connection and signal audio source. If the Clip LED 
shines a little or shows no signal, check the output wire whether it is
 short-circuit or not.

Main Operation Key& Functions

Front Panel

04

AK series professional audio power amplifier

Gain control: 

use to set the output level of each channel