Is it ok to run aux 1/4 to xlr to my mixer with the need of a direct box?

Do you mean "without a DI box"?

Which Behringer do you use for the submix?

There are two ways to skin this cat:

1) If your submixer has 1/4" line inputs, plug out of the A&H aux directly into one of them.

2) If your submixer does not have 1/4" line inputs then, yes, use a DI.

The A&H aux send is line level - the xlr (mic preamp) inputs on most mini mixers have a hard time dealing with that signal level. Larger frame mixers typically have mic/line switches and pads to attenuate signals before the pre, or bypass it altogether.

When you crank line level into those pre's, they'll degrade over time.
Sometimes they can run for a fair amount of time, while other times they will crap out immediately. Luck of the draw.

No problem, glad to be of service!

I thought that running 1/4" to xlr would help with buzz I sometimes get at some venue`s.

Not really, that buzz is probably coming from the light system or a bad ground in the building. Nothing you can really do about that (using A/C ground plug lifters will more than likely cause you to get a good shock).
You could invest some money in a power conditioner, be prepared to spend some dough - good ones are not cheap!
Pay attention to your gain structure at the Allen & Heath and on your Behringer - most hum and buzz problems are prevalent due to too many channels clipping (the buzz and hum are overmodulated along with the original signal), or conversely, too many running at -20dB and lower (making the gain up somewhere down the line boosts the noise as well)! Happens where I work all the time...

Could this have damaged the pre`s is that what you mean by crap out, like totally crap out, done, gone, over, tape over the channel input?

It's possible, clip is never a good thing. Take a close listen to that channel at unity and see if you can hear any distortion or other artifacts. If you can then yes, it's time to tape over it.

Try the change that I've suggested. Go buy yourself a nice 1/4" cable and jump from the Aux to the line input, set your gain properly, and all should be well. When you can afford to, splurge and buy yourself something better than that Radio Shaft monitor!

No problem, Kevin.
Feel free to drop in anytime!

Edit> If you want a suggestion on a replacement for your Radio Shack headphone amp, the Shure P6HW hardwired beltpack is a good investment.

And for power conditioners, the Furman PL Plus will help (not solve, but help) clean up that dirty venue power.

Throw a few IL-19s in your suitcase and you're all set.

-Ben

allenk wrote: I have been having a problem with my monitor system. I would like to run thru my setup to see if theirs a better way to go which im sure there is.
First off, im a drummer I run a 1/4 to xlr from aux1 on a allen an heath mix wizard board. From there i connect a standard mic cable that runs into my personal behringer sub mixer xlr input. I then run a 1/4 cable from L/mono to the input of yamaha 31 band EQ. 1/4 out (mono)of the EQ into a Radio Shack head phone battery powered head phone booster.
I have wired EC3 Shure in-ear headphones. I setup a metronome that runs directly into my sub mix. I never have problems with it, so it must be coming my main monitor signal.
The thing is everything will be sounding great and working fine, then after an hour or so it starts cutting in and out. Or it will work all night?
This may be a stupid way of running things. But it sound great when working!
Thanks In Advance For Any Advice, Kevin

1. If you are running from the -10 aux send to the mic preamp, that could be adding to the noise. You need to run from the aux out to the 1/4" line in.

2. Your issue is that you are running unbalanced for a distance greater than 3' and/or you are getting some RFI or EMF interference as stated by others. You should be running balanced TRS to TRS, not TS to TS WITH balanced circuits. You could run two DI boxes to balance the line, one on the input and one on the output. Or, atleast use one on the sending side and go back to the preamp and deal with the added distortion.

3. Any time you add an amplifier to something that is already greater than line level, you are going to add noise, and in this budget gear range, it may not be pretty. The noise could be occuring at the headphone amp you have added. It is likely not shielded and is not balanced.

4. You do need clean power, but I would bet your whole rig on the fact that this is a impedence and balancing issue, not power related.