Audio Parts
  • 28 ga. Magnet Wire, 1 lb.

    28 ga. Magnet Wire, 1 lb.

    Copper Enamel. 1 lb. 2067 ft. Copper prices are currently fluctuating. Copper wire prices are subject to change at time of order. We will notify you if there is more than a 10% increase in price.

    $19.95
    Add to Cart
  • 28 ga. Magnet Wire, 10 lb.

    28 ga. Magnet Wire, 10 lb.

    Copper Enamel. 10 lb. (+/10%) and approximately 20,670 ft. Copper prices are currently fluctuating. Copper wire prices are subject to change at time of order. We will notify you if there is more than a 10% increase in price.

    $150.00
    Add to Cart
  • KELVIN® Audio Amplifier Booster Kit

    KELVIN® Audio Amplifier Booster Kit

    Amplifies music from a portable CD player, audio project, or any audio signal up to 1W and relays it to an 8 ohm speaker with volume control (speaker included). Requires 9V DC Battery.

    $9.95
    Add to Cart
  • KELVIN® Audio Amplifier Booster Bulk Pack

    KELVIN® Audio Amplifier Booster Bulk Pack

    Bulk Pack of 20 - As Low As $7 Per Kit! Amplify music from a portable CD player or any audio signal up to 1W. Relays it to a speaker with volume control (speaker included). Requires a 9V battery.

    $140.00
    Add to Cart
  • KELVIN® 20 W Audio Amplifier Kit

    KELVIN® 20 W Audio Amplifier Kit

    This kit contains all the parts necessary to build a 20W Mono Hi-Fi Amplifier using a LM1875 to amplify any small signal and to drive an 8 ohm speaker with 1% THD. Requires a 12-30 Volt DC power supply.

    $19.95
    Add to Cart
  • KELVIN® 20 W Audio Amplifier Bulk Pack

    KELVIN® 20 W Audio Amplifier Bulk Pack

    Bulk Pack of 10 - As Low As $16.00 Per Kit! All the parts necessary to build a 20W Mono Hi-Fi Amplifier using a LM1875. Amplify any small signal and drive an 8 ohm speaker with 1% THD. Requires a 12-30 V DC power supply.

    $160.00
    Add to Cart
  • KELVIN® 20 W Audio Amplifier Assembled Demo

    KELVIN® 20 W Audio Amplifier Assembled Demo

    All the parts necessary to build a 20W Mono Hi-Fi Amplifier using a LM1875. Amplify any small signal and drive an 8 ohm speaker with 1% THD. Requires a 12-30 V DC power supply. Teacher Demo Unit, Assembled/Tested.

    $69.95
    Add to Cart
  • KELVIN® 20+20 W Stereo Amplifier Kit

    KELVIN® 20+20 W Stereo Amplifier Kit

    A high quality stereo audio amplifier which operates from a 12-30 Volt DC power supply. This kit contains all the parts necessary to build a 20+20 Watt stereo Hi-Fi Amplifier using a LM1875 to amplify any small signal and to drive an 8 ohm speaker with 1...

    $31.95
    Add to Cart
  • KELVIN® 20+20 W Stereo Amplifier Assembled Demo

    KELVIN® 20+20 W Stereo Amplifier Assembled Demo

    A high quality stereo audio amplifier which operates from a 12-30 V DC power supply. This kit contains all the parts necessary to build a 20+20 Watt stereo Hi-Fi Amplifier using a LM1875 to amplify any small signal and to drive an 8 ohm speaker with 1%...

    $69.95
    Add to Cart
  • KELVIN® Wireless Microphone Kit

    KELVIN® Wireless Microphone Kit

    While building this kit, students learn about microphones, audio amplifiers, RF oscillators and how FM radio works. Transmit your voice or sing to any FM radio up to 100 feet away! Includes instructions and handheld housing made from a PCV pipe. Kit...

    $29.95
    Add to Cart
  • KELVIN® Wireless Microphone Bulk Pack

    KELVIN® Wireless Microphone Bulk Pack

    Bulk Pack of 10 - As Low As $26 Per Kit! Build this kit and learn about microphones, audio amplifiers, RF oscillators and how an FM radio works. Transmit your voice or sing to any FM radio up to 100 feet away. Includes instructions and handheld housing...

    $260.00
    Add to Cart
  • KELVIN® Wireless Microphone Assembled Demo

    KELVIN® Wireless Microphone Assembled Demo

    Build this kit and learn about microphones, audio amplifiers, RF oscillators and how an FM radio works. Transmit your voice or sing to any FM radio up to 100 feet away. Includes instructions and handheld housing made from a PCV pipe. Requires a 9V...

    $69.95
    Add to Cart
  • Headphones

    Headphones

    Light as a feather. 100 dB, 20-19 K, 4-32 ohms, 3.5 mm stereo plug.

    $4.95
    Add to Cart
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