In article , Wally
wrote:
Jim Lesurf wrote:

How do measurements of the frequency response now compare with before
you made the changes?

Unfortunately, I didn't have the meter before the changes started - I
got it after I split the bass from the rest and added the EQ.

In that case the following experiment would be of interest.

1) Make a note of the settings at present and the measured (acoustic)
frequency response.

2) Alter the arrangement by using a set of series resisors to sum together
the outputs from the xover, then run the combined result through just one
power amp. Then run the output of the power amp to the speakers in
parallel.

3) See if this sounds much the same as at present. (You may need, first, to
tweak the gains of the xover sections to correct for any differences in
gains of the amps and get much the same acoustic frequency response as
before.)

This would help establish if the differences you hear are due to the system
simply acting as a 'tone control' and have little or nothing to do with
using more than one power amp. I'd be interested to know what you
discovered...

Slainte,

Jim

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