Question about AFS using the DRPA & cowboy hat feedback

5000watts

I just got my DRPA and I am slowly using more of the features. Thanks to those who helped me with my initial setup for my Yorkville rig. We are having a hell of a time with my monitor feeding back. We just starting using a dedicated monitor mixer, as well as running a 31 band eq on my monitor and we are still fighting the feedback. We have it mostly under control, but last night it was starting to oscilate again with a few squeels getting loose. Here are some details;

I am 6'2, wear a cowboy hat on stage
Using an SM58, or an EV767a
Using a Yamaha moniter (12\" & Horn)

We rang out the monitors and have almost all of the bands on the 31 band eq from 1k right to 10k damn near right off. The eq settings on the monitor mixer are flat with the mids turned down a little. Would using the AFS on the driverack help out at all? I haven't used that feature yet and don't quite know how to set it up yet.

Dra

Set up the program for the monitor in the DRPA. Do the indoor method or go outside and auto EQ. Now see if that help with the feed back. If it does, copy the faders to the 31 band and see what happens. Not all EQ's are created equal. The AFS will help a lot, but not if you have major problems with the tone of the speaker.
Cowboy hats... yikes.
Where is the monitor in relationship to you and the mic?

DRA

5000watts

Yea, the hat seems to incite some nice squeels every now and them!!! The monitor is set up right behing the microphone stand facing up at the back of the microphone.

I will give using the dbx on the monitors to get a graph idea. I am thinking of getting another DBXPA for the monitors, but we use two different sets of monitors, but all the same mics. So I am not sure what that would be like. Would it have any other beneficial use other than the AFS on the monitors?

Dra

The benefit of the DRPA on the monitors...
28 band GEQ
3 band PEQ (for a flat baseline)
HPF (eliminating everything below 100hz or so will open up the vocals quite a bit)
AFS

See how much more you can get out of the monitor with your test before you procede with buying another.

DRA

Fanman20

Hi 5000watts

suggestion

If you want to buy another
why not buy a 260 and put the DRPA on monitors and the 260 on FOH

just my 2 cents worth

Mark

Dra

Kudos to Fan...
If your budget allows $600ish the 260 is well worth it (and more). That's only about $200ish more than a DRPA.


DRA

Dra

Gadget, FanMan,

I just had a thought :shock:. Can signal lines be be combined? Of course they can. All the time. Stereo to mono, etc.

Can we....?
Take a DRPA, used for monitors or full-rangle cabs. Set all the x-over filters to the same HPF. \"Tri-Y\" LH, LM, LL outputs together and now have 7 functioning PEQs in one combined output.

Is that the same thing a running EQ's (parallel or series) to double the boost / cut potential?

Am I just tired and incoherent?

DRA

Gadget

Another solution has been to use a hypercardioid mic which typically prefers a more horizontal mic position, and the monitor an angle on the side of mic stand as opposed to at the foot ..behind the mic...

I'm not sure what the loading (impedance) would do to the signal, but parallel processing should offer the benefits of the individual channels.
G

Fanman20

HI
A bit too left field for me Dra
Not sure what it would achieve , in sound quality

Didn't we discuss feed back in another thread some time ago

Mark


This is not the tread but does talk about feedback

http://www.dbxpro.com/Forum/viewtopic.p ... c&start=15

We talked about glasses causing feedback
(not getting too old yet)

5000watts

What are the benefits of the 260 over the PA? I recently read that for tall people you should tilt the monitor forward about an inch or so? Anyone heard of this theory?

Gadget

I used to say the 260 is better.. I will now go \"the whole 9 yards\" there IS NO comparison...The 260 is simply a professional piece and the DRPA and PX are entry level devices that are a total compromise of the features available on the 260.

I just did a thread on this very subject and with the 260 I got 121.7 db monitors (granted they are bi-amped) and I was able to point the mic into the horn a foot away and not a sound! no cowboy hat could stand up to that kind of sound! (might blow it off though... )

Here is the thread.. pictures to follow soon..
http://www.dbxpro.com/forum/viewtopic.php?t=1424

The only thing that tilting would accomplish is IF the singer was JUST on the outside of the horn pattern ... then he would be out of it...not a solution...NOTE the cheaper the monitor, the less care was taken with the horn pattern, the more artifacts there will be.. also the cheaper the crossover, the more interaction in the crossover region... GOOD monitors DON\"T feed back till they are STUPID loud.. but, they cost BIG money! I just did that 121.7 DB with an old 25 watt stereo amp on the horn...(*grantedI had good power in the woofer and quality components... but hey, it's do-able...

Gadget

Dra

Plenty of 260 - PA comparisons on the forum (I think one in the RMF section, too).

Technically, tilting the monitor forward would make the sound hit you in the knee. But semantics... Either tilt it (whatever direction) or move it away so that it has the best flat path to your ears.

DRA