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FireStudio Tube buzz through headphone out
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bartonw
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Joined: 07/09/2010 17:16:21
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I have a new FireStudio Tube, which I've been playing with for the past week or so. I've noticed a significant amount of buzz/hum coming through the headphone output even when there are no inputs/signal connected to the unit. The buzz is also present when tested on a couple different power sources. Could this unit be defective? Or might I need a better power conditioner?
Monolithent
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Joined: 28/07/2010 18:47:25
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Is the problem just in the headphone out or is it present on the other connections as well?
http://support.presonus.com

Tallest guy in the Mod Squad with all his hair still on his head.

No I'm not a freaking pilot!! The Air Force won't let me have a suit with a zipper...or sometimes shoestrings.

My advice and suggestions should never be considered advice or suggestions. These are mostly insane ramblings of a poor aircraft mechanic who can, strangely enough, still hear.

StudioLive 16.4.2, AudioBox 1818VSL, AudioBox 44VSL, Faderport, Digimax FS,, M-Audio Firewire 410
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bartonw
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Joined: 07/09/2010 17:16:21
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The inputs all seem to be fine, and the buzz is not recorded. The noise is present while monitoring/playback through the headphone out, as well as the main outs. Do you think the tubes are abnormally noisy or defective? Or is it more likely a power issue?
walla
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Joined: 11/09/2010 14:20:13
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I know exactly what you are talking about.

My Firestudio Tube used to do the same thing. Then one day, it stopped. I have no idea why or how.

I'm sorry I couldn't be of more help.
Monolithent
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If the noise isn't recorded then the tubes are fine. The firewire output picks up just shortly after them. It sounds like you may have a bad cap or other component in there somewhere.

Just curiousity how are you playing back the recorded tracks? Are you using another interface? I'm trying to get my head wrapped around whether or not you have the same problem playing back tracks from the FST or if the noise is there too.

If I'm thinking correctly then you might have to send it back to Presonus. They can get it fixed in short order. It isn't too expensive either if your warranty is expired.
http://support.presonus.com

Tallest guy in the Mod Squad with all his hair still on his head.

No I'm not a freaking pilot!! The Air Force won't let me have a suit with a zipper...or sometimes shoestrings.

My advice and suggestions should never be considered advice or suggestions. These are mostly insane ramblings of a poor aircraft mechanic who can, strangely enough, still hear.

StudioLive 16.4.2, AudioBox 1818VSL, AudioBox 44VSL, Faderport, Digimax FS,, M-Audio Firewire 410
--MultiBoot System--
Win Vista 64/XP Pro/7 x86/7 x64 - Mac OSX Snow Leopard/Lion
Gigabyte motherboard--SYBA TI Firewire XIO2200A--i7 2600k Quad Core--16 GB DDR III--Custom 2U Rackmount--4 TB Raid (all internal SATA II)--19" Samsung HDMI LCD on pivoting VESA 1U Mount
Studio One v1 Pro x64
Studio One v1 Artist
Studio One v2 Artist
[Yahoo!]
bartonw
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Joined: 07/09/2010 17:16:21
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If I play the tracks back through the Presonus main outputs, then yes there is a buzz. But if I monitor tracks through the computers core audio or if I export and listen via other mediums I can tell that the buzz is not recorded.
Monolithent
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Joined: 28/07/2010 18:47:25
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I really can't offer much more at this point. I don't think it's an external power problem because you said you've used different power supplies. I don't think a power conditioner would be useful either at this point and you may just be spending money that probably won't help.

Other than possibly bad cables which isn't likely as it is happening from your headphones as well, I'd say it's probably time to give official tech support a try.

Wish I had better news.
http://support.presonus.com

Tallest guy in the Mod Squad with all his hair still on his head.

No I'm not a freaking pilot!! The Air Force won't let me have a suit with a zipper...or sometimes shoestrings.

My advice and suggestions should never be considered advice or suggestions. These are mostly insane ramblings of a poor aircraft mechanic who can, strangely enough, still hear.

StudioLive 16.4.2, AudioBox 1818VSL, AudioBox 44VSL, Faderport, Digimax FS,, M-Audio Firewire 410
--MultiBoot System--
Win Vista 64/XP Pro/7 x86/7 x64 - Mac OSX Snow Leopard/Lion
Gigabyte motherboard--SYBA TI Firewire XIO2200A--i7 2600k Quad Core--16 GB DDR III--Custom 2U Rackmount--4 TB Raid (all internal SATA II)--19" Samsung HDMI LCD on pivoting VESA 1U Mount
Studio One v1 Pro x64
Studio One v1 Artist
Studio One v2 Artist
[Yahoo!]
mseverini
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Joined: 07/10/2010 18:10:55
Messages: 2
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Hey Bartonw:

I'm having the same issue on two different units and I'm wondering ... did you ever get to bottom of it.

DOJdrummer225
Prenoob

Joined: 30/04/2012 02:22:45
Messages: 2
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My firestudio tube is also having a similar problem. My noise initially was from it being recorded, but I found that the lights in my room give off a lot of electrical noise. However, I also found that my headphone out also had a lot of noise. Upon closer inspection I could actually hear it when I just put my ear up to the headphone out. I have no clue why this is happening. Calling tech support tomorrow though
jonathansadler
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Joined: 19/04/2014 08:27:02
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Just thought I'd jump in to say I'm having the same issue. I get a clearly audible buzz when monitoring through headphones around the 9 o'clock mark. There is no buzz when I use my main monitors, only through the headphones (which sucks because I can't use my monitors where I live). Did some back and forth with Presonus support to no avail. Also, this buzz did not start occurring until I moved to a new apartment, so it could have something to do with electrical in the walls maybe. I don't know!

Here is what I've tried:

Tried multiple headphones
Moved the firestudio tube away from computer, monitor, lights, the wall, etc.
tried multiple outlets
tried different power cables
switched out the tube

All with no success
jonathansadler
Prenoob

Joined: 19/04/2014 08:27:02
Messages: 2
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I just figured out a workaround, I think.

Go into the Presonus Universal Control
Turn anything making sounds off
Check the Phones Mixer in the Universal Control, and if the fader is up all the way...
Turn the headphone volume up all the way
Lower the fader until you do not hear the buzz
Lower the phones volume knob, test some sounds

Be careful, don't blow your ears out doing this. I can't BLAST tunes anymore, but it is definitely loud enough, and NO MORE BUZZ!!!

Hope this works for others.
 
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