Super weird looper trick.

funkalicious101 · #1 04-21-2008, 09:26 PM

On my Electro-Harmonix 2880 there are left and right inputs and outputs, I only use one amp so I have always only used the left input and output, and used the panning knobs as secondary volumes.

But today I tried this: Bass into left input, left output to amp, right output to pedal (BF-3 and Subdecay Quasar) into right input. When the dry input panned slightly to the right it works lovely, I can modulate and effect my loops (provided they are panned about noon, to far to the left they go straight to the amp (no effect) and to far to the right and they will never make it to the amp).

But when the input signal is panned even slightly to the right it just lets out a shreiking noise, and the further you pan is the quieter it becomes. It is the strangest sound I have ever heard though, and it responds to the settings on the pedals). The only thing I can think of is either a robot (or robot-like being crying or just shrieking at the top of their lungs) its a shrill modulating drone that just may be usable in music. I would love to post clips, but I have no means of doing so.

But I have no idea why its doing this. Or if it can damage my looper of pedals. Anyone know anything about this?

Thanks,
Sam.

TaySte_2000 · #2 04-22-2008, 03:11 AM

You sound like you are creating a feedback loop within the pedal if anything you are only likely to damage your amp due to the high pitch and volume.

Basically by sending the output back to the input you create a loop what might work better is bass into left input then left output to the pedals into right input the the right output into the amp

This will allow you to loop your clean bass then modulate the loop later and if you so choose loop this.

I plan on doing similar with my EHX Stereo Memory Man which also has this feature, with the proper switching equipment of course.

Hope this helps

ehque · #3 04-22-2008, 03:33 AM

Right output into right input sounds like disaster.

Maybe use the left output into your other pedals, which go into the right input, then the right going into the amp? No feedback loop that way, unless the pedal is not true stereo or crosstalks badly. If you want shrieky feedback stuff, perhaps one of barge's feedback pedals is for you. Maybe with a compressor also.

Swimming Bird · #4 04-22-2008, 08:07 AM

+1 to feedback loops. There are at least a few noise musician/bassists (myself included) lurking around this forum if you need any advice or opinions on creating terrifying noises.

If you're enjoying controllable feedback, might I suggest getting a delay pedal that can be pushed to self-oscillation and that you check out circuit bending.

funkalicious101 · #5 04-22-2008, 04:55 PM

Hmmm I'm not sure if its like a feedback loop, as it doesnt affect the instrument sound going in (that I have noticed), just created noise of its own. But I've found ways to make it actually sound rather interesting.

But I will try left out to right in (Though I dont think it matter, as you can pan the input and each channel).

Swift713 · #6 04-23-2008, 05:28 AM

With the left out sent to the right in you should be able to pan the channels away from each other without loosing any signal to your amp. I guess I'm assuming that there's a pan for each channel like a mixing board. If there's only one then the left/right balance should mix your effected loop with your dry. I think.

OhThePeacock · #7 04-23-2008, 06:50 AM

Quote:

Originally Posted by TaySte_2000

You sound like you are creating a feedback loop within the pedal if anything you are only likely to damage your amp due to the high pitch and volume.

Basically by sending the output back to the input you create a loop what might work better is bass into left input then left output to the pedals into right input the the right output into the amp

This will allow you to loop your clean bass then modulate the loop later and if you so choose loop this.

I plan on doing similar with my EHX Stereo Memory Man which also has this feature, with the proper switching equipment of course.

Hope this helps

How would I go about hooking up a loop on my SMMH "the right way"?

TaySte_2000 · #8 04-23-2008, 07:06 AM

Bass into left input, left ouput into right input, right output to amp.

I actually put my Echobox in this loop inbetween left out and right in worked really well and the echobox worked with the smm/h in bypass as well.

OhThePeacock · #9 04-23-2008, 08:05 AM

Quote:

Originally Posted by TaySte_2000

Bass into left input, left ouput into right input, right output to amp.

I actually put my Echobox in this loop inbetween left out and right in worked really well and the echobox worked with the smm/h in bypass as well.

Alright, I'm gonna have some fun tonight.

speak_onion · #10 04-23-2008, 10:10 AM

Quote:

Originally Posted by funkalicious101

Hmmm I'm not sure if its like a feedback loop, as it doesnt affect the instrument sound going in (that I have noticed), just created noise of its own.

That's exactly what a feedback loop is. It's often referred to as "no-input mixer" because it's can be done by routing the fx send of a mixer to some pedals and then the output of the pedals to an channel, and then when you pump up the fx send of the return channel, BAM, feedback. Good times.

The sounds you're describing are just how a feedback loop responds in my experience.