Yamaha DTXpress/DTXplorer/DTXtreme

Hey everyone, last post on this topic, I found something that is a solution,
albeit something I need to learn more about.  And, wanted to send this to
the people who responded and wanted to know what I found (mainly wether or
not my unit was to be determined faulty).

When I run my Roland KC-500 through a two to three prong adapter, the
ticking disappears.  I ran across something similar when I set up my home
theatre system.  The Klipsch subwoofer actually came with a three-to-two
prong adapter, indicating it should be used if inexplicable noise appears,
and they recommended getting a ground isolator for my cable line if this
solved the problem.  It was the solution there, and it is in fact seeming to
be the solution here.  Of course, determining where the ground problem
exists is critical to the safety of my equipment.

Thanks for the friendly responses!

-Dan

-- 
Dan Mowczan, pinball@...

> From: Dan Mowczan <pinball@...>
> Reply-To: DTXpress@egroups.com
> Date: Mon, 15 Jan 2001 00:14:35 -0500
> To: <DTXpress@egroups.com>
> Subject: Re: [DTXpress] MIDI transmission causes noise?
> 
> Shoot, no solution.  Even the 'pulse' during non-communication (which I
> assume is some sort of watchdog to insure communication exists) pulse right
> through and after a reset.  I'm going to call Yamaha tommorrow and get their
> thoughts on it.
> 
> -Dan
> 
> -- 
> Dan Mowczan, pinball@...
> 
>> From: "Rich" <rich@...>
>> Organization: Tweakheadz Audio Lab
>> Reply-To: DTXpress@egroups.com
>> Date: Sun, 14 Jan 2001 01:41:47 -0600
>> To: <DTXpress@egroups.com>
>> Subject: Re: [DTXpress] MIDI transmission causes noise?
>> 
>> Dan,
>> 
>> 
>> I had the same problem.  What i think is going on is that the DTXpress
>> internal memory management gets corrupted.  The solution is to reset the
>> machine by using the sequence of button pushes detailed in the manual.  You
>> will lose all custom patches unless you save them via sysex 1st.  You can
>> load them back in after the reset.  They will still work and the pops will
>> be gone.
>> 
>> Best,
>> Rich
>> Unique Sample CD Roms, Loops and SoundFonts
>> Main site:  http://www.tweakheadz.com
>> MP3 files:  http://www.mp3.com/tweakheadz
>> 
>> ----- Original Message -----
>> From: "Dan Mowczan" <pinball@...>
>> To: <DTXpress@egroups.com>
>> Sent: Saturday, January 13, 2001 8:42 PM
>> Subject: [DTXpress] MIDI transmission causes noise?
>> 
>> 
>>> I recently purchased a Roland UM-1 USB Midi interface so I could get some
>>> communications working with my PC for storing drum kits.  It's a cool
>> little
>>> interface, and fairly inexpensive ($49 at Edirol's site) if you want a USB
>>> type.
>>> 
>>> Of course, the driver is crashing my Mac.  But, that's another story.
>>> 
>>> I threw the driver on a PC and started working immediately.  I pulled up a
>>> MIDI file of some Piano and it played beautifully, except there was a
>>> cackling coming from my amp, kind of a static or popping sound.  At first
>> I
>>> thought 'Boy, these are some bad GM sounds', but after then downloading
>> some
>>> kits from DTXpressions to play with, I hit the 'Send' key on DTXchange and
>>> during the entire send, the popping was occuring, this time at a much
>> faster
>>> speed, but only for the two seconds or so required to receive the kit.  It
>>> seems that any MIDI data received causes an audio glitch in the outputs.
>>> The transmission worked properly, however.
>>> 
>>> Then, I noticed anytime MIDI was hooked up, there is a slight ticking from
>>> my DTXpress brain in the neighborhood of 240-260bpm.  Disconnecting the
>>> Roland UM-1 from the MIDI cable, effectively powering it down, stops the
>>> ticking.  Shutting down the computer but leaving the cables connected also
>>> stops the ticking.  When the windows driver is running, the ticking
>> occurs.
>>> 
>>> Finally, I did a bulk dump of data from the DTXpress brain.  This I can't
>>> get to work at all.  The PC doesn't simply doesn't seem to see any data.
>>> During this, I get no popping or static through the amp however.
>>> 
>>> In frustration, I swapped the MIDI cables in and out in case I did
>> something
>>> wrong, which didn't do a thing, but when they were swapped, I was getting
>> a
>>> significant ground hum from my Amp that I wasn't before.
>>> 
>>> Any ideas on what's causing this?  I also can't seem to detect any of this
>>> through my headphone jack, but based on the volume output on it, I can't
>> say
>>> for sure if it is there or not.
>>> 
>>> -Dan
>>> 
>>> 
>>> 
>>> --
>>> Dan Mowczan, pinball@...
>>> 
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>> 
>> 
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> 
> 
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> Subscribe:    DTXpress-subscribe@onelist.com
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> 
> Shortcut URL to this page:
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>