philips-em-6721
  1. Tiemen

    Philips EM6721 BALANCED Electret, anyone knows them?

    There's a Philips EM6721 BALANCED Electret for sale at a Dutch tradingforum. I can't find any information about them. Who can enlighten me?
  2. Philips EM 6721

    Philips EM 6721

    Philips EM 6721 Balanced Electret Hi-Fi Stereo Headphone Made in Holland Technical Data: Frequency range: 16-22000 Hz Impendance: 800 Ohm at 500 Hz Sensitivity: At 1 Volt - 99 dB SPL at 500 Hz At 5 Volt - 113 dB SPL at 500 Hz Input Voltage: Maximum 5 Volt
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