MCM Electronics

Universal Audio PreamplifierMCM Part #: 28-12754  |  Kemo Electronic Part #: M040N

Universal Audio Preamplifier 5 stars from 1 review.
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Universal Preamplifier

For microphones and other weak signal sources; this mini module is simply connected between a power amplifier and a signal source.

Product Description

    Features
  • Input/output voltage: 2-50mV/0.2-5V
  • Input/output impedance: 50Kohm/1Kohm
  • Amplification: 40dB
  • Requires: 9-24VDC
  • Size: 30x25x15mm

Product Reviews

  • "Excellent product" by rich38 on 11/14/2013
    Overall: 5 out of 5
    Value:
    Quality:

    I used this 28-12754 preamplifier along with the 28-6400 amplifier to make a "one-way intercom" using a speaker as a microphone. I found that 9-Volts was best to power the preamp, with 12-Volts best for the amp, both regulated from the same source. I put a 10-K pot between the amps as recommended, and there is more gain than I will ever need. Separating the units by about 6-inches as well as using shielded wire was necessary to prevent feedback. Performance far exceeded standard intercoms as far a sound quality and output volume.

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Package Specifications & Dimensions
Weight:0.2 lbs.
Hazardous:No
RoHS Comp:Yes
Warranty:90 days
Need to Return?
Length:5 in.
Width:5 in.
Height:1.5 in.
Shipping Information
Extra Shipping Charge:No
Drop Ship:No
Catalog Pages
Catalog/Page:

MCM Cat 57, Page 684

MCM Cat 56, Page 624

PDF Reference
Datasheet

Requires Adobe Acrobat Reader.

Mfr. Info

Mfr. Name:Kemo Electronic
Mfr. Part Number:M040N