Speaker Asylum

General speaker questions for audio and home theater.

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Re: I hope the mods work out OK

Posted by Danny on June 26, 2006 at 19:49:29:

"maybe Danny could check the response again on an unmodded pair..."
The problem with that is that I no longer have an un-modded pair.
"that was has really been beaten on to see if the measured response changed."
Burn in doesn't change the measured response except a slight change in the lowest frequency range where it is near impossible to measure accurately to begin with.
"it looks like the roughness comes mainly from cabinet resonance, interference effects between the drivers (probably made worse by the first order crossover) and diffraction (though that cabinet design looks pretty good)."
Most of the roughness all comes from the woofers response. There was a bad peak at 850Hz and some break up at 4.5kHz. The first order crossover just was not enough to take care of any of these areas.
Most of the cabinet noise is in the lower ranges.
Danny Richie