I got the midranges and tweeters of rare vintage German speakers: Acron 900B. I’m going to build a functional pair, so it’s time to searching for the woofers. However, I think I would go for the modern replacements such as SEAS, Scanspeak, Peerless, etc., rather than finding those Acron’s woofers. I wonder what parameters do I need in order to find the units that match to the midranges and tweeters, or, have similar outputs to the original woofers? Luckily, they are closed enclosures, and, I can find some information from reviews in old magazines such as the cabinet volume and the box tuning frequency. Is this information sufficient to recruit the proper replacement woofers?
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