X-Shawn_Young
Imported Account
Nov 11, 2002, 1:34 PM
Post #7 of 9
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I mentioned the Rapco device as a solution for going from line in to low-z mic output, which you may have already had an adapter for that. If you did need something like that though, it's the way to go because it's battery powered. The more devices you have on an electrical phase, the harder it will be to pinpoint where the problems are. But that doesn't even seem to be the problem.
This is the simple cost effective way (based on what you've told me) to solve your problem:
Buy a three-prong to two-prong plug adapter. They aren't more than a few bucks. Stick it on the end of your projector plug. This will eliminate the projector's ground line from going into the wall. The hum should stop. And yes, run the vx2000 and the mixer off of batteries if you can. It will save you from having multiple points to troubleshoot from.
Also, here's a little troubleshooting guideline:
-If you hear a "whine," it's an attenuation problem.
-If you hear a "hum," it's a grounding problem. And if you listen hard enough you can actually hear the cycles in the hum!
Shawn Young
Matrimoments Productions
www.matrimoments.com
: Hi Shawn,
: :There are buzzing issues all the time in churches, and 9 times out of 10 it's a ground hum problem. When the electric phases get mixed, you can get a buzzing noise. Every effort is made to keep the sound system on a different line than the video, but the second you connect a vcr to both the projector AND the sound system, you've "married" the two lines together. [ I think I explained that right :) ]
: That's exactly what happened Sunday. I tested the audio system (VX2000 to mixer to Mic input of house system) and it sounded great. But when I plugged in and powered up the projector I got a horrible buzz. I was able to minimize it by plugging the projector into a different outlet but it was still there and annoying...
:
: : The answer is to go as passive as possible. RAPCO (www.rapco.com) makes a battery powered "tape deck interface" for $30ish I believe, and another for around $60 with volume controls. It keeps the electricity from becoming an issue.
: : I hope that helps at least a little.
: It does, totally. I have the option to go with battery power on the Samson mixer I have and I can go battery powered with the VX2000 instead of plugging it in. Do you think that would help? Or is the "tape deck interface" for the projector? Sorry for my ignorance. Audio is the weak link in my productions at all levels....
: Joel Peregrine
: Peregrine Video Production
: Whitefish Bay, Wisconsin
: www.RememberTheFeeling.com
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