Yamaha DTXpress/DTXplorer/DTXtreme

Hi,

And you've checked the manual, making sure there's no global or master audio output gain settings for the module that need to be raised (aside from the sldiers)?

You're right, though: if you can't get hot signals from the output of a module, you'll be forced to raise gain at the downstream stages, and thus start to hear alot of background noise (induced or otherwise) that gets amplified at the mixer's pres, etc.  All the buzzes and hums seemingly come out of the woodwork...

As far as the clicking, that sounds alot like something called a "MIDI Ground Loop".   Do a search on Yahoo!, and you should get some info on what it is, and how to address it...

But a simpler first step to run out induced noise would be to make sure you're running different cable types separately, NOT parallel to each other (if they must cross, run them at right angles).  

A 'clean install' for a studio usually runs different types of cables (MIDI, audio, power, speakers, SCSI, etc) as far away from each other as possible.  It makes a BIG difference.

Chris

--- In DTXpress@yahoogroups.com, "markalias" <markalias@y...> wrote:
> Just got my module back from the tech Yamaha had my local music store
> send it to.  He claims not to be able to re-create the problem I'm
> having, and I wondered if anyone here has a similar issue with the
> DTX III.
>
> I have two keyboards & the DTX (Special) pads as controllers, and a
> number of sound modules hooked up to a mixer.  Two problems:
>
> 1. The only sound module I need to add gain to is the DTX III.  For
> some reason, it has the weakest signal of all my modules.
>
> 2. This is the wierd one, which I probably wouldn't even hear if not
> for #1.  If I play either of the keyboards, which send MIDI note
> messages to the DTX, I can hear clicking coming out of the DTX's
> audio channel even if the DTX is turned off.  I've isolated this to
> the DTX itself.  If I connect a keyboard's MIDI out to the DTX's MIDI
> in, turn off the DTX, and play the keyboard with Local Off and all
> other mixer channels muted, I can hear faint clicks coming out of the
> DTX's audio outputs in response to the Note On messages coming into
> its MIDI in.  Unplug the MIDI in from the DTX, or the audio outs, and
> the problem goes away.
>
> Anyone else have these issues with the DTX III?  Any advice now that
> the repair guy can't hear this?
>
> Thanks.