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Constant pressure amplifier

Constant pressure amplifier


The Constant pressure amplifier uses deep negative feedback so the output voltage is very stable, and the received load within its rated power range has little effect on the output voltage of the amplifier.

speaker amplifier main view

Single Channel Power Amplifier KNMK-240


      The range of power amplifiers is designed for general commercial and industrial public address applications.Rack mount design in 3U type,rated power ranges from 240W,480W,650W,which provides a wide selection to meet different size sound system demanols.Both balanced and unbalanced line inputs make it selectable for installer,balanced line output feeds to another power amplifier as well as secures the signal transmission is lessnoise and longer distance.70V,100V and 4-16 ohm speaker outputs are convenient for installation when selection different speaker matching. Amatching. A master volume control is included.Complete protection includes clip,short circuit,high temp and overload.Indications for power,signal clip,protection and temp.


     *Rack mount amplifier in 3U type.

     *Rated power from 240W,480W,650W.

     *70V,100V and 4-16ohm speaker outputs.

     *Isolated transformer for human safety operation.

     *Balanced XLR type line input and unbalance 1/4 inch TRS phone iack line input.

     *Balanced XLR type line output feeds to another power amplifier

     *Reliable protection of over heat,over load,clip& short circuit.

     *Indications for power,signal,clip,protection and temp

     *Excellent device of radiator cooling fanner that ensures working effectively


     *DC 24V input available on less than 240W models.

     *Panel with/without handhold

     *Faults monitoring moudule,it can output short circuit signal to achieve main/spare amplifier switch.

Rear Panel

Single Channel Power Amplifier

Single Channel Power Amplifier

==>>>> Product Specification
Model KNMK-240
Rated Power Output 240W
Speaker Outputs 70V,100V&4-16Ω
Input Sensiticity& Impedance ±385mV/20kΩ,Balanced XLR Input
775mV/10KΩ,Unbalanced TRS Input
Output Sensiticity& Impedance ±385mV/470Ω,Balanced XLR Input
775mV/470Ω,Unbalanced TRS Input
Overload Electromotive Force >15dB
Frequency Response 50Hz-16KHz(+1dB,-3dB)
S/N Ratio >90dB
THD less than 0.1% at 1KHz,1/3 rated power
Ground Lift Lift the earth line ground by switch GND/lift to "lift" position
Cooling Fan automatically star up when temp reaches 55℃
Protection Over heat,over load,clip & short circuit
Power Supply 110V-230V 50/60Hz or DC 24V
power Consumption 720W
Weight 15.24Kg
Dimensions 484*359*132mm
Finish Pannel:aluminum plate,black
Case:Steel plate,black

==>>>>Telephone System

loudspeaker telephone system

==>>>>Product Application

==>>>>Product Detailed Pictures

speaker amlifier

speaker amlifier

==>>>>Product Video

==>>>>Please Email US marketing@koontech.com

This product model:KNMK-240