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On Fri, 18 Nov 2005 20:45:27 -0600, Charlie
wrote: Instead of paying $75 - $150 for an adapter, I constructed what is the equivalent of 500 ohm source impedance to 4 ohm (actually, 2 8-ohm earbuds in parallel) adapter. Is your intercom/radio capable of enough signal level (voltage, not current) to compensate for the ~100-1 stepdown in voltage? he has ~100:1 impedence ratio ... that will be about a 10:1 turns ratio ... impedence in an n^2 relationship. Question is still valid, though. The POWER, less efficiency, will be the same, so 1mW at (say 400 ohm) will be 1mW at 4 ohm. So if the sensitivity of the transducer elements is the same, same SPL. |
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Thread | Thread Starter | Forum | Replies | Last Post |
GA to 8ohm Headphone Adapter Completed | Gary G | General Aviation | 4 | November 22nd 05 03:03 AM |