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I recently acquired a pair of M70 speakers one has a bad 25 F EWX woofer. It is my understanding that this should be an 8 ohm driver, but the ones in my cabinets say 4 ohm and the good one reads 4 ohm with my meter.
My question is, should I replace the bad driver with another 4 ohm? Or replace both with 8 ohm 25fewx drivers?
Thanks Craig
Why do you think, it should be 8 Ohm impedance?The original is 4 Ohm. If you fit an 8 Ohm impedance woofer it will be a bit quiet.Repair the original woofer or replace with a good used original woofer. It's a unique driver for this model.
Martin
The reason I asked is that the spec sheet and every 25F EWX driver I have found is 8 ohm. While mine are 4 ohm.
I'm not sure why SEAS would have the same model driver witth different specifications
You can be almost sure that any driver found in a B&O cabinet was custom made for B&O in some way and you won't find suitablereplacement anywhere else.If SEAS could meet B&Os specs by merely changing impedance on a driver already in their catalogue, they'd do it.