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40W Power Amplifier Module

Code: N67AW

5  out of 5 based on 2 reviews
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Product details

40W Power Amplifier Module

This amplifier module achieves peak power at an operating voltage of 16Vdc with a 4Ω loudspeaker. With lower voltages and higher resistance loudspeakers, power will decrease accordingly. If the signal source has a low output power (e.g. a microphone), it will be necessary to connect a pre-amplifier (i.e. Order Code N69AW) between the source & the potentiometer.
Output: maximum 40W music power
Operating voltage: 6-16Vdc
Loudspeaker connection: 4-8Ω
Frequency response: approx. 20-25,000 Hz
Dimensions: approx. 61 x 35 x 23mm


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2 of 2 Reviews

  • Excellent for in-car amplifier. Works great off a car battery. Simple connectivity and clear instructions meant that my little project worked first time. Does make a fair amount of heat, especially if you have two side by side for stereo.

    Was this review useful?  Yes No  8 1

  • I used one of these to construct a PA amplifier inside the enclosure of a 10" loudspeaker, forming a completely self-contained portable PA amplifier. The performance of these modules depends almost entirely on the quality of their power supply. Even on a 12 v supply rail they can easily draw up to 4 amps, and any inadequacy in the power supply unit will show up as hum or strange noises and oscillations in the output. You will require a switch-mode PSU with at least a 5 amps capability. Additional filtering with large electrolytics and/or inductors will further reduce the background noise to near zero, at which point you have a true hi fi amplifier with very linear frequency response and low total harmonic distortion. It is a good idea to decouple the supply to the pre-amp using a 4.7K resistor and another 1,000 mfd capcitor. I would advise you to restrict the supply rail to 12 v and the speaker impedance to 8 ohms and think of it as a 30 w amplifier rather than running the module flat out and risking heating problems, sound distortion and component failures. Used in this way the module gives excellent results at very low cost.

    Was this review useful?  Yes No  33 1


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7 of 7 Questions

  • Tareq said:

    can this be used on a guitar amp

    No sorry this product does not support that.

    Was this answer useful?  Yes No  0 6

  • Luke said:

    Would this be suitable for powering a subwoofer from a 9V DC supply and does the amp have any volume controls or something similar. Thanks.

    No sorry this product does not support that.

    Was this answer useful?  Yes No  0 5

  • john said:

    can two of these be bridged to increase output power?

    No sorry this product does not support that.

    Was this answer useful?  Yes No  0 5

  • Lee said:

    Does this have a DC supply circuit on board?

    Yes the product does support that.

    Was this answer useful?  Yes No  4 0

  • John said:

    I''m thinking of using this product in a car. Can it run reasonably well of 12v?

    all info relating to this product is available here http://www.kemo-electronic.de/en/module/m034/index.htm

    Was this answer useful?  Yes No  5 0

  • Tim said:

    Is this mono or stereo?


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  • Chris H said:

    is the rated power RMS or peak ??

    40W music power.

    Was this answer useful?  Yes No  0 7

Bulk Prices

Item code Item name Quantity Price
N67AW 40W Power Amplifier Module (1+) £18.99

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