MCM Electronics

Volume Kit, Bass Trebel Preamplifier By Velleman SA (K8084) MCM Part #28-12882

5 stars 1 review
MSRP: $45.90
You Save: $19.67 (43 %)

Preamplifier Kit, Volume Bass Treble

You will always need volume and tone control for use with simple power amplifiers. This kit comes complete with all input / output connections and potentiometers. Furthermore it is possible to amplify or attenuate the input signal.

Specifications Top

  • stereo volume control
  • stereo Baxandall bass and treble control
  • bass and treble potentiometers with centre click
  • customizable attenuation or amplification
  • complete with knobs
  • Ideal power transformer, MCM Item #287-1060

  • supply voltage: 2 x 12VAC / 100mA
  • frequency response: 3Hz - 500kHz (-3dB)
  • standard amplification: x1
  • signal to noise ratio: 98dB
  • harmonic distortion: < 0.005% (@1KHz)
  • maximum output: 5V RMS
  • tone control:
  • +/- 15dB @ 20Hz
  • +/- 15dB @ 15kHz
  • Input impedance: 50k ohms
  • dimensions: 4.1 x 2.75"

Part Numbers
MCM Part #:28-12882
Velleman SA Part #:K8084
Package Specifications & Dimensions
Weight:0.75 lbs.
RoHS Comp:Yes
Warranty:90 days
Need to Return?
Length:5 in.
Width:6 in.
Height:1.5 in.
Shipping Information
Extra Shipping Charge:No
Drop Ship:No

Product Reviews Top

  • by Dadmead

    on 5/20/2015

    Velleman K8084

    Overall: 5 out of 5

    I got excellent results, but not without some difficulty. At first, I used two 12 volt transformers (not matched) for the ac power and experienced 60 Hz hum. But the larger problem was that the unit interfered with, and disabled, my garage door opener. Now I run it from a Dc-to-Dc converter, which supplies +/- 12 vdc at 65 ma per leg, in place of the built-in rectifier/filter.
    Fun to build, works very well.

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