slight high pitch squeal thru input echo monitoring...

Im proud to say that I can record 18 track in @ 96/24 using the input echo for monitoring on all channels without latency...WOOHOOO!!!!... The machine I built for the studio has been labeled SKYNET (The Terminator)..It will eventually destroy the world !!! LOL...any way I do notice a low volume squeal in the headphones when using echo for monitoring...It almost sounds like its a ground issue.. It also pick up the motor noise in the fader.....when using direct monitoring (which is limited) it's not there..It is also NOT coming thru to the recording..the recording is pristine !!! Just thru the outputs which i route to a headphone breakoput box... How I get my headphone sends is I use the 1thru 8 output driver...and send an individual track send to each output that requires that track in the headphone mix for individual headphone mixes... I love the idea that I can send up to 20 separate mixes... If you can tell I received my second V700R..
Any one know what the squeal is?? Its not unusable because of it but,   it is slightly destracting.

Any body know of any threads posted on this issue.. The squeal (whine)is a bit distracting to my customers . It sounds like it could be the fan circuitry....Who knows....Anybody???.. Merry Christmas

Greets,
reckon I may know what you are talking about.. I hear the squeal too after setting up with the 700R. Definitely a ground loop related issue IMO as I can get it to happen here by simply touching the strings of the guitar (plugged in via the 700R) and with the other hand, touching a fader... cue high pitched squeal.

I haven't done it yet (due to pending studio relocation) but I'm expecting the fact I have the DAW on a separate power board to the 700R is the major contributor. Touching as described completes a ground loop and it's squeal o'clock.

Not sure if this is identical to your situation but I am betting you have a ground loop issue of some description.

Cheers.

This would really be sweet if it were addressed.. It is a major distraction for some customers..and it gets on my nerves too..just setting up the monitor mixes.... I'll try grounding each of the 700R's to the computer and see if it helps. Thanks for posting Mully and I hope you are having a wonderful Christmas!!

stratrat1


This would really be sweet if it were addressed.. It is a major distraction for some customers..and it gets on my nerves too..just setting up the monitor mixes.... I'll try grounding each of the 700R's to the computer and see if it helps. Thanks for posting Mully and I hope you are having a wonderful Christmas!!

Before you do that, get a three prong plug tester and make sure your outlet is properly grounded. The tester will have the readout instructions on it. Grounding peripheral devices to your computer could be dangerous for a number of reasons. I suggest you also get a good power conditioner and plug your devices through that. But make sure your wall outlet has a proper ground.

Yeah strat.... main thing at the end of the day is to ensure a common, or star, earth is achieved. That is all mains powered devices in your setup should ideally be earthed at one common point. When I was touching things as mentioned above, I was creating a loop which made the hum very apparent.

Crg is right also in that you should test to make sure you actually have the earth before commoning to it. The best way really is to use an earth stake dedicated for that purpose and rewire your mains outlets commoned to this earth... and not have looped earths as they generally are (in Australia anyways). This just sets up more potential loops which equals hum(s).

Cheers and hope you had a great Chrissy too.

Thanks guys ..I will test the grounds in the control room..... The funny thing is that there is no artifact or noise what so ever in the audio of the recordings...just the input echo monitoring..It honestly sounds like a fan circuit whining in the i/o box.. The recording are pristine..I'm real glad that its not in the audio path..That would be a deal breaker...LOL... I'll let you guys know whats up...

Yep sounds right.. deffo good it's not in the audio chain getting recorded.

Well I tested the circuits in my control room.. Everything is correct power wise.. I also found out that moving the faders while in input echo, really makes a sci-fi type sounds in the headsets.not a problem though. The whine is  definitely coming from the
multi outputs on the 700R ..the main and sub outputs do not have this noise.. Im sure its picking it up thru some part of the path since it is having to make a round trip from 700R to daw and back....