That's only part of the story, though.Someone also previously questioned whether I was getting a full range signal by only tapping the rear speaker cable, buy my Android spectrum analyzer (Spectroid) showed I was getting bass down to at least 59 Hz playing music and my Android tone generator (FrequencyGenerator) produced an audible bass signal down to 18.3 Hz (using the Bluetooth connection).
What spl? If you were playing a sweep tone, what did the response curve look like?
A 4" midrange can't play that low with any decent volume (spl) and will overextend if you try. So, while I believe you, it really doesn't matter in the context of what the rear speakers can play effectively.
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