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What's the explanation of needing speaker calibrations vs wire length with good speakers ?

tjtremor

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Jan 5, 2022
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I have Klipsch rp-600m bi-amp with an older receiver so each speaker gets 2 channel so I get 100w+ per speaker available.

The speaker wires are not equal since the amp is near the right speaker. The banana,pin plugs & 12gauge cable are the same for both speakers.
Right speaker wires are 60cm and left speaker 200cm.

While listening to the same track & moving the output to left/right I used SPL db app to measure each driver. After I got them equal in db I checked by ear that they sound equal.

I end up with +0db left tweeter +2db right tweeter and +1db left woofer +3db right woofer

So yes, it made a difference in clarity but I'm left puzzled why this +2db difference ?
 

Eetu

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My guess is simply that the other speaker is closer to a boundary/corner than the other. Perhaps combined with manufacturing tolerances of the individual drivers. AFAIK +-1-1.5dB or more is not unusual.
 
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