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#1
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Eleven Rack Output to Amp buzz
Hey all
I've put this down on a different posting and I didn't get any replies. So, I am making a specific thread just in case there is some feedback:
Has anybody around here had to face the same problem? If so, what fixed it? |
#2
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Re: Eleven Rack Output to Amp buzz
Have you tried different amps? Is the amp and 11R running off the same power circuit? (Same Ground from the same side of a power panel.) Does the buzzing change if you change Amp Out settings?
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#3
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Re: Eleven Rack Output to Amp buzz
Yes. I checked: different amps and different power circuits.
Does the buzzing change if you change Amp Out settings? Good question but unfortunately the buzz stayed the same. |
#4
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Re: Eleven Rack Output to Amp buzz
Perhaps you have some sort of electronic device in the room generating RF that the unbalanced cable coming out of Amp Out is unable to defeat. Try turning everything you can off - powered speakers, monitors, etc. Move your cell phone to the other side of the room.
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#5
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Re: Eleven Rack Output to Amp buzz
Hi,
what about the headphone output ? and what about the mic in ? Is the "buzz" something bout 50Hz or a eather a digital clipping? does the buzz depend from the volume settings in 11rack ? |
#6
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Re: Eleven Rack Output to Amp buzz
Quote:
No buzz on the headphone output. I have never-ever used the mic in of the Eleven Rack. But that's an input we are talking about. And bare in mind that the XLR outs and the AES out are absolutely fine. It is just the Out To Amp 1 and Out To Amp 2 that produce the buzz. The buzz is electrical buzz and definitely not digital clipping. It would have been a good idea to patch an EQ after the outs and see what's the exact frequency but I returned it to the retailer and now I'm waiting to hear back from Avid. No, the buzz does not depend on the volume settings of the different "Rig". |
#7
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Re: Eleven Rack Output to Amp buzz
I totally appreciate everyone's feedback. But I just wanted to say that I am fairly experienced with audio equipment and I am very good with troubleshooting. Plus, the internet is fantastic for any query that might arise.
The intention of this posting is to find out whether - or not - another 11R user has had the same problem with the dedicated outputs to amp. To sum this up: the 11R I purchased works just fine when connected straight to a mixing desk (via XLR) and digitally via AES. But I want to be able to connect the unit to a guitar amp, utilising the function of bypassing the cabinet of the 11R Rig, and by passing the preamp section of my guitar amp. When I use the Out to Amp, for that reason, there is a buzz coming out of these outputs, from both of them (back and front) and regardless where they are connected to (i.e. if the Out To Amp outs going to a mixing desk, then same buzz is being produced). Again, if anyone has come across this please do drop me a line. If anyone is using the Output to Amp with no probs, then do let me know as well. It would be great to know how many users are out there with no issues, and subsequently how "unique" my problem is. And if you haven't used your Out To Amp ever, then I suggest that you give them a try and let me know how it sounds. Thanks all |
#8
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Re: Eleven Rack Output to Amp buzz
Quote:
Also, if you're plugging into a guitar amp and it has an effects loop try plugging the 11R into the loop return - this should bypass the amp's input circuitry. I do that with my Marshall DSL40 amp - 11R output to amp into the effects loop return and both are plugged into the same AC mains outlet. No noise except if I use single coil guitars and/or high gain amp models on the 11R. I also don't have any flourescent lights around or crt screens to give off noise. |
#9
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Re: Eleven Rack Output to Amp buzz
See this thread:
http://duc.avid.com/showthread.php?t...utput+amp+jack Your situation sounds a bit different. I've seen a few other posts on this "faulty jack" problem, but they all implicate only the front-panel jack. I've found the Ebetech Hum-X to be invaluable for dealing with ground loops on instrument-level connections. Because the Hum-X is in the power - and not the signal - path, there's no adverse affect on the sound. |
#10
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Re: Eleven Rack Output to Amp buzz
What make/model amp are you plugging into? And what input are you goign into? (e.g. instrument-in or an FX return? or a power-amp's line-in?).
Does the guitar amp buzz when you use a guitar directly into its instrument input (and/or whatever actual input you are using?)? How much have you tried gain staging? (turning up the amp out level while turning down the guitar amp's preamp-gain (or FX loop level) and visa versa). Just in case your Eleven Rack has the front-panel amp-out grounding problem then use the back-panel amp-out 2. If driving the guitar amp amp loop return is an option you may be better off driving that from the Eleven Rack Main Outs or FX Loop Sends (I suspect your Main Outs are going to FOH and so not available?). Darryl |
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