Feedback

[shaver]

what do you guys think about feedback destroyers in rack gear. I know people use them for PA's but since i play at loud volumes i tend to get alot of feedback and adjusting EQ doesnt always fix the problem, especialy since i just got one of those boss bass overdrive pedals. Man if i turn that thing on, all it is is sculch and high picthed demons.

i've been looken at the Behringer DSP 1124P Feedback Destroyer® Pro.. any coments?

http://www.behringer.com/DSP1124P/index.cfm?lang=ENG

 

[Aussie Mark]

what do you guys think about feedback destroyers in rack gear. I know people use them for PA's but since i play at loud volumes i tend to get alot of feedback and adjusting EQ doesnt always fix the problem, especialy since i just got one of those boss bass overdrive pedals. Man if i turn that thing on, all it is is sculch and high picthed demons.

i've been looken at the Behringer DSP 1124P Feedback Destroyer® Pro.. any coments?

http://www.behringer.com/DSP1124P/index.cfm?lang=ENG

Feedback destroyers work by cutting frequencies that feedback. The Behringer unit can be quite aggressive in automatic mode, and would suck a lot of your volume and tone if you are getting feedback from your bass rig. A better option is a parametric EQ, since you can sweep the problem frequency and adjust it directly. I would assume that it's the same frequency that is feeding back each time you kick your overdrive pedal in, so should be easy to track down and EQ out (with a parametric or a 31 band unit).

Having said that, why would you need stage volume loud enough to induce feedback from a bass rig? If the band is playing that loud on stage, the sound out front must sound like ass. I've got a very powerful bass rig, and the only way I can intentionally create feedback is by facing my Gibson EB-2D hollow body directly at the cabinet from less than 2 feet away, at full volume. Perhaps your pickups are too high, and way too close to your strings?

 

[rahock]

Aussie Mark made many good points. Trying to eq it out sounds like a much better solution.
I also agree with the possibility of adjusting your pickups down from your strings, but this is something you should really never have to do unless you've adjusted them upward in the past . Still worth looking at though.

I'm not trying to sound like a wise a$$ here, but you may want to rethink the use of your overdrive pedal and/or your stage volume in general. You must be mighty loud to be experiencing feedback like this.

Like Aussie Mark, the only time I ever experienced a feedback problem was using an old Gibson EB-2 hollow body and a couple of Accuostic 360 amps cranked to the max . Even then, only when I faced the speakers, and it was not a high pitched feedback but a real low growel that I'm sure would blow speakers pretty quickly.
Rick

 

[bassmonkeee]

Feedback destroyers work by cutting frequencies that feedback. The Behringer unit can be quite aggressive in automatic mode, and would suck a lot of your volume and tone if you are getting feedback from your bass rig. A better option is a parametric EQ, since you can sweep the problem frequency and adjust it directly. I would assume that it's the same frequency that is feeding back each time you kick your overdrive pedal in, so should be easy to track down and EQ out (with a parametric or a 31 band unit).

Having said that, why would you need stage volume loud enough to induce feedback from a bass rig? If the band is playing that loud on stage, the sound out front must sound like ass. I've got a very powerful bass rig, and the only way I can intentionally create feedback is by facing my Gibson EB-2D hollow body directly at the cabinet from less than 2 feet away, at full volume. Perhaps your pickups are too high, and way too close to your strings?

I agree with Mark 100%. If you aren't playing an upright bass, or aren't playing gigantic stadiums, then you really shouldn't be having a feedback issue with a bass rig. I mean--there's a reason the feedback eliminators are designed for PAs, and you rarely (ie never) see a bass player with one.

 

[shaver]

guys guys, i'm not playing at 11 with my 350 watt rig. the over drive pedal is the problem, not my volume, i have to crank the high eq on it high enough so that it will actualy sound like over drive, and this is i belive where the problem lays. everything else is fine. i dont get feed back on stage unless i'm next to the amp, and in that case the tweeter feeds back some and i've learned to cut the tweeter volume down.

Its just the case of the over drive and its feed back. volume isnt the issue, rather the EQ all together. Higher eq produces more distoration but also more feedback. However, this feed back acours when the bass is not being played and when the pedal is just turned on. so rather then something that adjustes the eq, maybe i can get the Boss NS-2 Noise Suppressor which is a gate.

my pickups are fine and my volume isnt any louder then it needs to be, i cant stress that enough. its just the EQ is out of wack, and maybe a gate will help this situation. and also i have slight hum issue, so maybe this would be a good investment.

tell me what you guys think.

 

[basspastor]

You are not going to like my answer.
STAYING SIMPLE SOMETIMES WORKS.

 

[Aussie Mark]

Excessive EQ will probably kill your overdrive tone, so you be forced to turn it up further and then you have a vicious circle. Sounds like you might be better suited to a fuzz pedal than an overdrive if you need that much distortion. Or, buy a decent tube preamp and dial in some nice crunch.

A noise suppressor (eg. gate) won't help you at all. A noise gate merely mutes the entire signal below a set volume level.

 

[shaver]

hmm, what i was thinking was maybe using the gate and overdrive hand in hand. only using the gate when the overdrive is on, this would be so i could set the leval to cut the signal, but it would to high for thee rest of my rig


well what ever.

thanks everyone

 

[Aussie Mark]

A gate works by allowing any signal that is greater than a set level to pass through the gate. It's the reverse of a limiter. The use of a gate is to stop hiss and other low volume noise from entering the signal chain during "quiet" times. Noise gates are used in multi pedal effects setups to cut out hum and hiss when the instrument is not being played. Another classic use of a gate is on backing vocal mics, so that the mics don't pick up stage noise, and the gate "opens" when the backing vocalist starts to sing. Individual Drum mics are generally gated in the recording studio, so that, for example, the floor tom mic doesn't pic up snare when the floor tom isn't being hit.

 

[Bassplyr]

Well said Aussie Mark! Thanks for the primer.

 

[xHARPERx]

tone...

what I would recomed posibley is a boost of some kinda, thats what I love most about my GK 800 rb, is I can set the tune how I want it to sound good, and then to make it sound amazing I just turn up the boost to give it some growl, no feed back, hum or major tone changes, I find this alot simpler and better sounding than my old setup which included a 15 band eq (bulit in the head) and a gate/compessor/expander, but thats just what i have to sugest...