From formercakid@yahoo.com Tue Apr 01 11:14:42 2003
Subject:Re: Keyboard Controller Problem

Thx so much for your technical expertise but I am
taking the easy way out. I just ordered the new BOSS
AB-2 2-Way Selector Pedal. I think that will solve my
problem. What do you think?
--- "EXT-Schurr, Larry A"
wrote:
>
> Isn't it odd how the simplest looking problems can
> have the most complex interactions?
> The problem here is the old "positive ground"
> problem so prevalent in mixing manufacturers. Voce,
> of course, is domestically designed though many
> assemblies originate abroad. The EP-7 is, of course
> Japanese in every particular. Mixing these audio
> grounding schemes results in "broadband
> zero-crossing resonance": a prevalent yet poorly
> understood concept.
>
> Rather than belabor the math and physics of your
> particular malady, your problem could probably be
> linked straight to the A/B switch, or more
> specifically, the Digitech A/B switch. Digitech, as
> we all know, is built in Salt Lake City and has few
> ties internationally and therefore might not be
> fully versed in this phenomenon. You may be able to
> send it back to the manufacturer to obtain what is
> called an "international shielding kit" as Digitech
> doesn't make such parts available at the local tech
> level. Check the website to be sure.
>
> Insist on the return of your exact switch as you may
> end up with one of the metric units and the 1/4"
> plugs will end up being 6.4mm and THEN you'll
> *really* have trouble.
>
> L.
>
>
> --- In CloneWheel@yahoogroups.com, "formercakid"
>
> wrote:
> I am experiencing a midi problem and not quite sure
> if it is actually
> a problem due to my limited knowledge of midi. I
> have a Roland EP-7
> electronic piano with midi in/out which I am using
> as a keyboard
> controller for a VOCE5 organ sound module. I have an
> Digitech A/B
> switch in place to switch back and forth between the
> piano and the
> VOCE. To be specific: midi out of piano is going to
> midi in of the
> VOCE. Individual 1/4 inch cable outputs of piano and
> VOCE (Rotosphere
> is inserted between VOCE and A/B switch) are going
> to an A/B switch,
> 1/4 inch cable out of A/B switch is going to a
> volume pedal input,
> 1/4 inch cable output of the volume pedal is going
> to a Peavey bass
> amplifier. When I press the A/B switch I can play
> the piano keyboard
> and I hear only the piano and when I press the
> switch again it
> switches to the VOCE module. The problem is that
> when I switch to the
> organ sound module I hear the sound of the piano
> bleeding thru under
> the organ sound module. I have to turn the volume
> control to the zero
> position on the piano to hear only the VOCE. Any
> help regarding this
> problem is greatly appreciated.
> --- End forwarded message ---
>
> [Non-text portions of this message have been
> removed]
>

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