Hi Tom,
Do the channels have to be side by side, or any two at random? Does
this mean that you are using two and only two pre-amps when this
happens, or do you mean when it's a pair, like overheads, while using
other channels for other inputs (IOW, can you only use ONE mic-pre on
the Neotek at the moment?)? If that's the case, does the problem
steadily get worse if you use more channels?
I very much doubt this is a grounding issue (in the 60hz hum sense,
anyway), but it MIGHT be an interface issue between the direct outs of
the Neotek and the input of the converters.
Best,
Ike
On 11-11-30 3:27 PM, Tom G wrote:
Hello All,
I have been battling an issue with my Neotek Series 1 console on and
off now for about six months. When I use any two preamps (of the
console) at the same time, I get a noise on one channel. According to
my frequency analyzer, it is approx. 4k and is high enough in gain to
make the track unusable. When I use outboard pre's there is no problem
whatsoever.
I thought it may be a ground loop or something similar, but floating
the grounds did not help. I'm using SSL converters and it doesn't seem
to matter what inputs of the SSL I'm using nor what channels on the
Neotek I use...still the same noise. But only when using two channels
together.
Any thoughts? I have not tried completely floating all grounds except
for the console. Once I get my tape machine back home and hooked up, I
am curious if I get the same result. Although as stated, floating the
two channels in question was no help.
Thanks!
Tom
--
Ike Zimbel,
Zimbel Audio Productions Ltd.
Toronto
416-720-0887
"Studio House Calls". Repairs and upgrades to analog audio equipment including:
AMEK, dbx, Neve, Neotek, MCI, Soundcraft and more. Authorized Warranty service for Allen&
Heath, Clear-Com, Drawmer, Soundcraft, SPL and Yamaha. Ask about our RF frequency
co-ordination services!
www.zimbelaudio.com
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