🚀 go-pugleaf

In article <fiedlerD26BFC.4o2@netcom.com> fiedler@netcom.com (Dragon (David Fiedler)) writes:
>kuczaj@aurcmx.com (Chuck Kuczaj) writes:
>
>>I just puchased a Quadraverb 2 for use on vocals in a P.A. system.
>>We had our first practice with it and noticed that it seems to be
>>making the system more susceptible to producing feedback.  I read
>>the manual thoroughly, and was working with a single reverb block
>>(Room 2-type).  I adjusted all the reverb parameters, in particular
>>the input low-pass filter cutoff frequency and the high-frequency
>>damping, but these didn't seem to help.  It almost seems as if
>>the reverb algorithm itself goes "unstable" under certain conditions.
>>Has anyone else experienced a similar phenomenon with the Q2?
>
>Hmm. I use my Q2 solely for recording but can't understand how this could
>be happening. Did you try putting an EQ block in? You could sweep the
>frequencies of the EQ (especially a parametric one) with a MIDI controller
>to see where you get the most help.

I had this happen with an SPX-90 a long time ago.  At the time,
I was sending too hot a signal to the unit and so it was acting
a little like a compressor...

Try turning down the input or send level and turning up the output or
return level.

Of course, there could be something wrong with the Q2;  it's certainly
not impossible.  That same old SPX-90 would sometimes get "stuck" in
a strange way when I used pitch shift with a lot of regen:  I expected
some distortion, but didn't expect it to skip like a scratchy record!
--

    /t

Tom Ritchford     tom@mvision.com   (212) 306-0414
Market Vision, 40 Rector Street, NY, NY 10006

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