Velleman K4700U 2-Channel Loudspeaker Protection Kit

Velleman K4700U 2-Channel Loudspeaker Protection Kit

Brand:| Model: K4700U
The Velleman K4700U was created to protect speakers from turn-on "thumps" and harmful DC voltage from amplifiers. It makes a great addition to custom amps or commercially-available amplifiers that may not have included speaker protection circuitry.
  • Kit includes PCB and all components necessary for assembly
  • Great for constructing new amplifiers or retrofitting older designs
  • Speaker protection circuitry for both channels of a stereo amplifier
Part # 
Weight: 0.65 lbs.  
Due In: 4/10/2015
Your Price
Buy 4-up$27.75
Part # 320-264
Qty:  EA
Available Payment Methods

Product Details

Velleman K4700U 2-Channel Loudspeaker Protection Kit

Protect your loudspeaker investment with the K4700U kit from Velleman. Once assembled, it can be integrated into a commercially-available or custom stereo amplifier, or put in its own enclosure. The result is that your speakers will be protected against excessive harmful DC voltage and the "thump" that's heard from some amplifiers when turning them on.

Specifications: • Switch-delay: ±6 seconds • DC protection: +1V, -1V • Maximum switching current: 10A • Required voltage: 110 VAC • PCB dimensions: 4.9" x 2.2".

Product Specifications
  • Project Kit TypeAmplifiers & Audio
Velleman K4700U 2-Channel Loudspeaker Protection Kit
  • BrandVelleman
  • ModelK4700U
  • Part Number320-264
  • UPC5410329047009
  • Product CategoryElectronic Project Kits
  • Unit of MeasureEA
  • Product Rating
    (2 Reviews)
  • Weight0.65 lbs.
  • California Prop 65

    Warning: California residents only. Please note per Proposition 65 that this product may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.

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Velleman K4700U 2-Channel Loudspeaker Protection Kit
Velleman K4700U 2-Channel Loudspeaker Protection Kit is rated 5.0 out of 5 by 2.
Rated 5 out of 5 by from great productThis is the second one o these I bought and they work good.If you are a diy guy this can save your speakers.And service is great.
Date published: 2014-08-29
Rated 5 out of 5 by from As advertizedWorks like it's suppose to. If your like me, I ran the amber and red led's to the front of my rack mount case. The amber led goes dim but does not fully extinguish. Just FYI!
Date published: 2014-01-25
  • 2015-04-01T06:59CST
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Product Q&A

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Velleman K4700U 2-Channel Loudspeaker Protection Kit

Will this kit work in an Adcom GRA-555II? Seems like the relay rating may be to low.

Asked by: owlsplace
  • 2015-04-01T06:56CST
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