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Audio power meter

Velleman K4307: Audio Power Meter Kit

Velleman K4307

The Velleman K4307 Audio Power Meter Kit (Electronic Project Kit -Soldering Required)

You can add a 10 LED scale power meter to your audio system with the Velleman K4307 Audio Power Meter kit. Power is supplied to the kit from the speaker output making it ideal for car audio systems, PA systems, or bridged amplifiers. The DIY kit is supplied with an aluminum front panel and scale stickers. It can be mounted vertical or horizontal depending on your system. When building the power meter kit you choose the measurement scale for either low power or high power systems.



  • Four different scales:
    • at 4 ohm load in low power mode: 0.3 to 400Wrms
    • at 4 ohm load in high power mode: 10 to 2000Wrms
    • at 8 ohm load in low power mode: 0.15 to 200Wrms
    • at 8 ohm load in high power mode: 5 to 1000Wrms
  • Minimum input sensitivity: 1.1Vrms (low power mode)
  • Maximum input voltage: 130Vpeak (high power mode)
  • Current consumption: 25mA at full scale
  • Luminous intensity: 8 to 20mcd / LED
  • Dimensions: 4.7 x 1.6 x 1.1"

Additional Information

Difficulty Level 2


Parts list
English assembly instructions through illustrations, pictures, etc.

Info Sheets

Resistor colour code

Overview of Velleman modules that are equal to D.I.Y Kits
This sheet is useful when you want to know which modules you could find in the do-it-yourself range of Velleman Kits and minikits.

 Warning: this product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to: www.P65Warnings.ca.gov/product