Product Description
Piezoelectric earphones also known as crystal earphones are the most sensitive earphones. In fact they are at least 10 times more sensitive than very sensitive magnetic earphones, dynamic earphones, and electrostatic earphones. Sensitive earphones have a very high impedance, which is measured in ohms.
Crystal Earphones are used in the construction of the crystal radio and in some science experiments such as listening to electric fish.
This products qualifies for wholesale Pricing/ quantity discounts for quantities of 10 and more.
SPECIFICATIONS:
- Impedance: 20K ohm
- Capacity: 15,000 pf
- Sensitivity: 57 dB at 1KHz
- Frequency Range: 200 ~ 8000 Hz
- Operation Temperature: -20º to 60º Celsius
- Cord: 3ft twisted cable.
The Minimum Order Quantity for this product is 2.
Orders of 10 and more receive bulk pricing discounts.
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Bought two because had read there were quality issues but bit work d. Arrived quickly and as promised and with well cushioned wrapped
Excellent service
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Great for DIY crystal radio
These work great for building AM radios. The sound is fairly quiet because this radio is not externally powered. All of the energy comes from the radio waves, so make sure you are in a quiet environment when listening.
