Kobble Digital Electronic AK2-1000, Owner'S Manual

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

20K ohms

10k ohms

AK4-700

AK4-1300

35.3dB

8.0kg

482x227x88

2x2300W

2x4000W

37.8dB

0.775V

or

1.4V

AK series professional audio power amplifier

4x1030W

4x1670W

4x670W

4x1220W

AK4-300

2x1000W

4x550W

4x350W

11

33dB

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

02

4.

：

Functions & Features

5.

：

Certification

In order to prepare to provide the needed materials to the production, we use a complete 
ERP system which can comprehensively balance and optimize management the resources. 
In addition, we also bear the following certification.

<1>

EU “CE” compulsory certification mark

<

2

>

UL product safety test and certification

<

3

>

American product safety standard

<

4

>

PSE Japanese compulsory safety mark

<

5

>

 KET Korean compulsory certification

<

6

>

RoHS Certificate

<

7

>

CCC National Compulsory Certification

<

8

>

ISO9001 quality system certification

AK series professional audio power amplifier

<

1

>

Efficient heat-sink, variable speed cooling fan, ensures the amplifier working at the 

        low temperature.

<

2

>

Exquisite shape and standard installation hole.

<

3

>

Perfect protection, including limit, the on / off shock protection, DC protection, 

        output short circuit protection, overheat protection.

<

4

>

In-built limiter, it is a very effective protection against electrical damage to the speaker.

<

5

>

Excellent audio signal performance, which has excellent signal conversion feature, it

        has very little harmonic distortion (THD), intermodulation distortion (SMPTE-IM), 
        transient intermodulation distortion, pure and natural interstitial deduction.

<

6

>

STEREO,BRIDGE, PARALLEL working mode.

<

7

>

Each channel has its Signal and Clip indicator.

<

8

>

When the protection circuits work, Fault indicator lights, and sound output auto

        matically stop at the same time.

<

9

>

The front panel level gain control.

<

10

>

The newest MD component technology makes the product more stable and reliable

<

11

>

The transistors directly contact with the heat sink to make it cool quickly.

<

12

>

The optimization cooling system let the machine work stability

,

With automatic 

          variable speed fan.

<

13

>

The unique short circuit locking and automatically reset function let the customers' 

          visual performance more reliable.