Feedback suppressors

[Dan56]

Hello,

Been reading about the wedgehorns as I plan ahead and try to solve our issues of the singers not hearing themselves. Yeah, the ear monitor works until the drummer gets loud and the bass player can't hear himself as well cause he's too close to his speakers.

Last time out we laid one of the QSC K12's on the floor in front of the singers. It seemed to keep them happy. So.........maybe wedgehorns.

In reading about them feedback suppression came up. Bill mentioned going with the Behringer FBQ2496 on the monitor feed. Other threads have mentioned using the DBX PA+ as a split system, one side for the mains, one for the monitors, the DBX having feedback suppression ability.

Just wondering what currently is the recommendations? If with the DBX, how would I actually connect that? Can the DBX be set up to separate the 2 feeds so that the limiting of the subs and the flattening of the system is not effecting the monitor feed? Or doesn't it matter?

Lastly, how do I engage the feedback suppression on the PA+? I could use it a bit when we're in our practice room. Not so much do to volume but do to the speakers facing at us and mic's (of different types) all over the room.

[Bruce Weldy]

Lastly, how do I engage the feedback suppression on the PA+?.

Page 17
http://rdn.harmanpro.com/product_docume ... iginal.pdf

[Dan56]

Lastly, how do I engage the feedback suppression on the PA+?.

Page 17
http://rdn.harmanpro.com/product_docume ... iginal.pdf

Thanks Bruce, but I have the manual and I tried what I thought was engaging the system but nothing seemed to happen. I'll try again.

Do you or anyone have suggested initial settings. Should I just let the system adjust all the filters on the fly (12 filters), should the hold be a few seconds or minutes (up to 60 minutes)? How fast do these systems react? Will I hear the feedback as the system finds and cuts it or does this happen internally with these suppressors so that the offending frequency never makes it to the speaker?

Specifically with the Driverack PA there are 4 modes. They name them but basically each one gets tighter in the frequency band (1/5 to 1/80 width with a Q of 7.25 to 116), Speech and music low, med, high. What is suggested to start with?

[Bruce Weldy]

I don't remember my exact settings off the top of my head, but I'm pretty sure it was the music setting - probably medium or high.

I kept the time release pretty low - 5 or 10 seconds - because, usually the feedback occurs because someone cupped a mic or something like that. If I need the suppression to last longer than that, then I've done a lousy job of EQing the system.

I'm talking mostly about monitors here as that's the only place I ever worry about feedback. I do have it turned on for my mains.....same kind of parameters.

It must work pretty danged good as I honestly don't recall hearing any feedback for the last several months of shows.....certainly none on the big outdoor shows.

[Dan56]

I don't remember my exact settings off the top of my head, but I'm pretty sure it was the music setting - probably medium or high.

I'm talking mostly about monitors here as that's the only place I ever worry about feedback. I do have it turned on for my mains.....same kind of parameters.

Thanks Bruce.

Are you running a separate driverack or feedback suppressor on your monitors?

[Bruce Weldy]

I don't remember my exact settings off the top of my head, but I'm pretty sure it was the music setting - probably medium or high.

I'm talking mostly about monitors here as that's the only place I ever worry about feedback. I do have it turned on for my mains.....same kind of parameters.

Thanks Bruce.

Are you running a separate driverack or feedback suppressor on your monitors?

I have a PA+ on mains, a PA on 2 monitor mixes, and a PX that I'll be putting on two more monitor mixes soon. Those two have been running straight from the board, but since I have the extra DR, it's worth putting it in line for the EQ and FBS.

[Dan56]

Thanks Bruce. Now I wish I had kept the DRPA after I bought the PA+. Oh well.

[Bruce Weldy]

Thanks Bruce. Now I wish I had kept the DRPA after I bought the PA+. Oh well.

I don't ever seem to get rid of anything.....that's why I have 10 guitars now....

[kekani]

In reading about them feedback suppression came up. Bill mentioned going with the Behringer FBQ2496 on the monitor feed. Other threads have mentioned using the DBX PA+ as a split system, one side for the mains, one for the monitors, the DBX having feedback suppression ability.

Just wondering what currently is the recommendations? If with the DBX, how would I actually connect that? Can the DBX be set up to separate the 2 feeds so that the limiting of the subs and the flattening of the system is not effecting the monitor feed? Or doesn't it matter?

Aha, this one I know. You'll run your tops and subs off one channel (right), and monitors off the other (left). Mono all the way, of course.

Output from High Left to your top amp. The high output doesn't have a low pass, so you'll want your tops on this.
Output from Low Left to your sub amp.
Output from Med Right to your monitor amp.

IIRC, you'll run through the right side setup first if you use the wizards (which I don't anymore), then the left (or vice versa). I think the limiting and crossover applies to both channels. If you're like me and run Wedgehorn 6's, I actually highpass and lowpass at the corner frequencies, because I can. There's still so much more that I don't use - haven't limited yet, or gone throught the process. That will come soon enough after I finish my DR200's.

BTW, I learned it here http://dbxpro.com/forum/viewtopic.php?f=60&t=2228

[Dan56]

Aha, this one I know. You'll run your tops and subs off one channel (right), and monitors off the other (left). Mono all the way, of course.

Output from High Left to your top amp. The high output doesn't have a low pass, so you'll want your tops on this.
Output from Low Left to your sub amp.
Output from Med Right to your monitor amp.

IIRC, you'll run through the right side setup first if you use the wizards (which I don't anymore), then the left (or vice versa). I think the limiting and crossover applies to both channels. If you're like me and run Wedgehorn 6's, I actually highpass and lowpass at the corner frequencies, because I can. There's still so much more that I don't use - haven't limited yet, or gone throught the process. That will come soon enough after I finish my DR200's.

BTW, I learned it here http://dbxpro.com/forum/viewtopic.php?f=60&t=2228

Thanks,

This connection you describe would only allow 1 monitor feed. That is how you run yours?

[kekani]

Aha, this one I know. You'll run your tops and subs off one channel (right), and monitors off the other (left). Mono all the way, of course.

Output from High Left to your top amp. The high output doesn't have a low pass, so you'll want your tops on this.
Output from Low Left to your sub amp.
Output from Med Right to your monitor amp.

IIRC, you'll run through the right side setup first if you use the wizards (which I don't anymore), then the left (or vice versa). I think the limiting and crossover applies to both channels. If you're like me and run Wedgehorn 6's, I actually highpass and lowpass at the corner frequencies, because I can. There's still so much more that I don't use - haven't limited yet, or gone throught the process. That will come soon enough after I finish my DR200's.

BTW, I learned it here http://dbxpro.com/forum/viewtopic.php?f=60&t=2228

Thanks,

This connection you describe would only allow 1 monitor feed. That is how you run yours?

Yup. As I understand, the dr260 can do more than one monitor feed, and is computer programmable (I think). I guess this would be the one unit option instead of multiple driveracks - may be cheaper for multiple driveracks though.

Aha, this one I know. You'll run your tops and subs off one channel (right), and monitors off the other (left). Mono all the way, of course.

Need to correct this - mains off the left, monitors off the right.