Additional Products & Services thru 2020
*****
Old Bird 21c-lite DIY mic kit <$150 USD (available by August 2020)
(includes acrylic pyramid, single PUI AOM-5024L-HD-R mic element, circuit board with pre-amp & high-pass filter, 100 ft audio cable w/1/8 in miniplug connector. No soldering necessary)
Old Bird 21c upgrade (from pre-2017 model to pre-July-2020 model) - $100 USD
(replace bucket, interior base, pyramid & mic element - includes replacement of plastic & cloth covers)
Old Bird 21c check up and maintenance - $25 USD
(test mic & cables; replace plastic and cloth covers)
Acrylic pyramid with mounted microphone element - $50 USD
(useful to have in reserve for quick replacement/repair of damaged mic element)
Replacement microphone element with leads for Old Bird 21c (pre-July-2020 model) - $25 USD
(the Knowles EK23132 microphone element that has previously used been used in the 21c mic is out of production. We have a limited stock still available. We recommend the PUI AOM-5024L-HD-R, which requires a additional 2.2 k metal foil resistor and a 0.1 uF ceramic capacitor, as a replacement - this mic element is similar to the Knowles, perhaps with a bit better signal-to-noise ratio)
Knowles EK23029 microphone element with leads - $25 USD
(limited supply available; for 2000-2020 DIY mic design)
Contact Bill at ear2sky at oldbird dot org to make purchase and shipping arrangements.
Payment can be made via personal check or PayPal.