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01-18-2019, 05:46 AM
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#1
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Human being with feelings
Join Date: Mar 2018
Location: Germany
Posts: 9
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Hum while ReAmping?
Hey guys,
So I tried reamping a dry guitar signal the other day, and it kinda worked first try,
but unfortunately there's a hum in the Signal that I just can't get rid of.
I'm using a TASCAM US 16x08, I am thinking the Problem might be that the Interface only has unbalanced outputs, is that correct?
My current setup is:
Guitar > unbalanced input > reaper > specific hardware output > unbalanced signal into reamp box (Palmer DACCAPO, I'm using a 1/4" jack to xlr adaptor) > amp
Additionaly, I can't seem to mute the dry guitar on the Master Bus, If I do the Amp just won't get any Signal at all.
Any Help is appreciated
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01-18-2019, 06:07 AM
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#2
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Human being with feelings
Join Date: Feb 2017
Posts: 4,843
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Quote:
Originally Posted by Brocodile
Hey guys,
Additionaly, I can't seem to mute the dry guitar on the Master Bus, If I do the Amp just won't get any Signal at all.
Any Help is appreciated
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untick the "master send" box in the guitar track's routing options
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01-18-2019, 07:27 AM
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#3
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Human being with feelings
Join Date: Jan 2009
Posts: 1,802
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Quote:
Originally Posted by Brocodile
Guitar > unbalanced input > reaper > specific hardware output > unbalanced signal into reamp box (Palmer DACCAPO, I'm using a 1/4" jack to xlr adaptor) > amp
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This may sound illogical but have you tried eliminating the Palmer box from the chain just to see what happens?
When a guitar is plugged in to an amp, it's always done on an unbalanced 1/4" cable unless there's a relatively long distance between guitar and amp.
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01-18-2019, 07:39 AM
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#4
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Human being with feelings
Join Date: Mar 2018
Location: Germany
Posts: 9
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Quote:
Originally Posted by dug dog
This may sound illogical but have you tried eliminating the Palmer box from the chain just to see what happens?
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Yes, I tried that and the signal seems to be way too hot and there's a lot more noise, maybe I am missing something?
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01-18-2019, 08:01 AM
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#5
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Human being with feelings
Join Date: Jan 2009
Posts: 1,802
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There should be a way to lower the level of the signal coming out of your computer. Can you simply turn the fader down in Reaper? Is there a way to turn down the signal using your Tascam controls- either on the hardware itself or using the Tascam control software?
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01-18-2019, 08:04 AM
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#6
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Human being with feelings
Join Date: May 2009
Posts: 29,269
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Did you lift the ground on the Palmer or vice versa? That hum is very likely a ground loop between computer/amp. Fixing that is about the only real reason for a reamp box. For the output volume see the -10/+4 switch for starters.
__________________
Music is what feelings sound like.
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01-18-2019, 08:31 AM
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#7
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Human being with feelings
Join Date: Mar 2018
Location: Germany
Posts: 9
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Quote:
Originally Posted by dug dog
There should be a way to lower the level of the signal coming out of your computer. Can you simply turn the fader down in Reaper? Is there a way to turn down the signal using your Tascam controls- either on the hardware itself or using the Tascam control software?
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I'll see what I can find and come again later.
Quote:
Originally Posted by karbomusic
Did you lift the ground on the Palmer or vice versa? That hum is very likely a ground loop between computer/amp. Fixing that is about the only real reason for a reamp box. For the output volume see the -10/+4 switch for starters.
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Yes I tried the Ground lift, it reduces the hum but it is still significant.
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01-18-2019, 08:38 AM
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#8
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Human being with feelings
Join Date: May 2009
Posts: 29,269
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Do you know if that box provides full isolation? My radial has a ground lift and an isolated output and IIRC isolated was the only way I was able to remove all hum - it also has a volume control (not selling you on it, it just fits the symptoms you described)...
http://www.radialeng.com/product/x-amp
If aschat drops in he can probably give you the best advice using what you have.
__________________
Music is what feelings sound like.
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01-18-2019, 09:41 AM
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#9
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Human being with feelings
Join Date: Mar 2018
Location: Germany
Posts: 9
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Ok so I just tried goind directly into the amp from the interface, with the volume lowered. Also tried different cables and outputs.
Sounds exactly the same as with reamp box.
I don't know if it has full isolation, unfortunately. How can I find that out?
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01-18-2019, 09:46 AM
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#10
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Human being with feelings
Join Date: Mar 2018
Location: Germany
Posts: 9
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Quote:
Originally Posted by domzy
untick the "master send" box in the guitar track's routing options
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Unfortunately this does only lowers the Di track on the master bus slightly, maybe the tascam software is at fault.
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01-18-2019, 09:50 AM
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#11
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Human being with feelings
Join Date: Mar 2018
Location: Germany
Posts: 9
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I have also tried gating the Di track, with no positive results. So it seems the track is clean, the noise is coming from somewhere else.
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01-18-2019, 11:08 AM
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#12
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Human being with feelings
Join Date: Dec 2009
Location: Oblivion
Posts: 10,271
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I had the same problem when I tried this. From my research it seems the primary solution is to use a DI in reverse. But I guess a reamp box should do basically the same thing.
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01-18-2019, 11:31 AM
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#13
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Human being with feelings
Join Date: Jan 2009
Posts: 1,802
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A couple other semi-random suggestions if you're still sitting around scratching your head... Maybe not helpful, in the end, but I like to eliminate certain possibilities when trouble shooting, so...
Have you double checked on the sound of a guitar straight into the amp? Could be an amp problem.
Tried a different power source (electrical wall plug) for the guitar amp? (You'd be looking for a plug that's on a different circuit from the one you're currently using.)
Good luck!
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01-18-2019, 11:43 AM
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#14
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Human being with feelings
Join Date: Dec 2012
Posts: 7,295
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Quote:
Originally Posted by karbomusic
If aschat drops in he can probably give you the best advice using what you have.
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Aw jeez... These things are tricky and often trial and error and I've never used one of these boxes. Like you said, though, this is the whole reason for the reamp box to being with.
The output on that box is specifically labeled as "Isolated Output", so we have to assume that means on the other side of the transformer, and that should work. Plug it in, if it buzzes, flip the ground lift. If that doesn't help...???
IDK where the OP got the idea that the US16x08 has unbalanced outputs, but it's FALSE. I'd be willing to bet that a proper TRS>XLR cable would fix it. The adapter is not the same thing. If it had a transformer in it maybe, or if you put a DI box in there...but that's just silly!
In general, it always helps to have everything plugged into as close to the same outlet as possible. Computer, interface, and amp all on the same (preferably "conditioned") power strip. You can't trust different wall outlets to even be on the same phase let alone the same circuit, and even if they are, extra wire and questionable connections can add up to real differences in potential. You are actually using all three prongs on the power cables? Not using any of those "cheater" adapter things to connect to 2-prongs at the wall? You're sure that the outlet itself is wired correctly and well-grounded?
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01-18-2019, 12:11 PM
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#15
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Human being with feelings
Join Date: Jul 2010
Location: Silicon Valley, CA
Posts: 2,787
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I think you have to unplug on thing at a time until you find out where the hum is coming from.
...Reamping is going to degrade the signal, including at least some additional hum & hiss. Every active electronics stage (theoretically) degrades the signal, amplification stages do the most damage and you've got a couple of "extra" amplification stages.
If you are lucky all of the additional noise will be insignificant compared to the normal hum picked-up by the guitar but there is a lot of potential for problems with all of these components & connections. ...I'm not a guitar player, but all guitars hum, right? Even humbucker pickups?
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01-18-2019, 01:08 PM
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#16
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Human being with feelings
Join Date: Mar 2018
Location: Germany
Posts: 9
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Quote:
Originally Posted by ashcat_lt
IDK where the OP got the idea that the US16x08 has unbalanced outputs, but it's FALSE. I'd be willing to bet that a proper TRS>XLR cable would fix it. The adapter is not the same thing. If it had a transformer in it maybe, or if you put a DI box in there...but that's just silly!
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Ok since the outputs are balanced, I tried a stereo 1/4" jack cable, the adapter has a stereo jack. And, drumroll... No noise! Thank you so much! I just assumed all 1/4" jacks were unbalanced. Clearly my mistake.
Thank you everyone for your helpful answers!
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01-18-2019, 01:15 PM
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#17
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Human being with feelings
Join Date: May 2009
Posts: 29,269
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Quote:
Originally Posted by ashcat_lt
The output on that box is specifically labeled as "Isolated Output", so we have to assume that means on the other side of the transformer, and that should work. Plug it in, if it buzzes, flip the ground lift. If that doesn't help...???
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I'm blind today, I specifically thought I looked for that and missed it. To the OP, glad you got it sorted!
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