VX 351 Noise

OLFAudio · Post by **OLFAudio** » Tue Apr 19, 2005 12:51 am

So I installed my VX 351 today and I am getting a very high pitched noise whenever I plug any patch from it to a MF or the voyager. I don't hear it if I monitor through the headphone jack. Only through my monitors. I double checked the multi pin cable to make sure it was seated properly.

I am running it with an voyager and it is powering a CP 251 as well. I'm sure it could be a 'dirty' power issue but was wondering if anyone had experienced this problem and had found other solutions.

Any words of wisdom would be super.

dr_floyd · Post by **dr_floyd** » Thu Apr 21, 2005 2:30 pm

The noise will go away if you don't power the CP from the VX.
I'm waiting to hear if there is a shielding fix for this since I'd really prefer not to use the AC adaptor for the CP.

OLFAudio · Post by **OLFAudio** » Thu Apr 21, 2005 3:01 pm

Thanks for the reply. The noise isn't always there but I guess I'll go back to using the wall wart for the CP.

mee3d · Post by **mee3d** » Thu Apr 21, 2005 5:48 pm

I have /had the same problem . . as soon as i added a 9v powersupply to the 251 it went away. Funny thing is that it wasn't always there . . I powered the 351 and 251 from the Voyager for about a year without any problems?

Mal

OLFAudio · Post by **OLFAudio** » Thu Apr 21, 2005 10:04 pm

Buzz is gone after adding 9v back to 251.

JvS · Post by **JvS** » Wed Jun 22, 2005 3:52 pm

So how can I get the VX351 to supply power to the CP251? I can't seem to find it in the user manuals. I just want to try it out, see how it works.

Thanks
Jan

MC · Post by MC » Wed Jun 22, 2005 4:43 pm

It should be in the VX351 manual, I got it to work.

JvS · Post by **JvS** » Wed Jun 22, 2005 4:54 pm

MC wrote:It should be in the VX351 manual, I got it to work.

weird, I just can't findi it in the Voyager manual, is there a seperate manual for the VX351?

MC · Post by MC » Wed Jun 22, 2005 5:11 pm

It may be an instruction sheet that came with the VX351 "Rackmount kit", if I remember it included a ribbon cable for power connection between the 351 and 251. The instruction sheet is not on the Moog website, shoot 'em an email.

mee3d · Post by **mee3d** » Wed Jun 22, 2005 5:19 pm

Yes it comes with the rackmount kit and requires removing the end wood panels and installing a new centre panel between the 2 units which passes a newly supplied jumper cable.

Mal

JvS · Post by **JvS** » Thu Jun 23, 2005 2:11 pm

OK, that explaines. I haven't got the rackmount unit yet.

Thanks all!