Hi guys, recently got a Djm 700, all outputs are fine except for the booth which is giving off some hiss. I've used a Djm 600 and a Xone:32 on the same setup and they were fine on all outputs.
One of differences is the power plug is a two prong on the Djm 700 while my other mixers are UK models with square plugs that have fuses.
I have a pair of Truth monitors that also have two prong plugs. Could this be the problem?

I need to use the booth output for a couple reasons so any help will be appreciated.

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sounds like a grounding issue, try plugging your mixer into a different socket than the rest of your setup

Try a different outlet or a different power source. If it continues try another patch cable between your booth output and speaker. It could be the cable. Do you use any type of power conditioner?

On the 700 what type of connector is the booth output? And what type of connector is on the speaker end? XLR, 1/4, RCA?

Thanks for the suggestions, I've tried different outlets for the speakers and mixer but no change.
Also tried different cables from the mixer(RCA)to speakers(1/4" jack).
I borrowed one of the two prong to Square plug adapters from one of my turntables to rule that out.

I don't have any power conditioning in place as I've never had a problems in the past. It just seems strange that it's only the booth.. It does have different specs than the Master out #2(also RCA)

Master Out 2 = +2dBu/10 kOhms/10 Ohms
Booth Out = +2dBu/10 kOhms/22 Ohms
Rec = -8dBu/10 kOhms/10 Ohms

Is there any way of verifying if it's a power problem without buying a conditioning device?

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If you tried different outlets and the problem stayed, that's ok. You've narrowed the problem down to your mixer and speaker. Try running the cable from your master outs to your monitors. Do both the left and the right outputs. The goal here is to isolate the problem to one device. If no noise is present from those outputs, clean signal from your master outs to the speakers, then the problem is with your booth output. It could be a number of things. I'm gonna predict a cold solder joint. This happened with my Denon 1500. I was getting a buzz on my right output. It turned out a colder joint was the problem.

Is the mixer new?

i had this problem when connecting master to a computer and booth to a stereo while doing internet-radioshows. using shorter cables helped. balanced cables would also help i guess, but the booth isnt balanced i think. this was with djm500 btw. shorter cables, keep them away from powercables etc etc. the problems isnt one device, its a system problem.

Yeah it's a brand new unit. I've tried everything to see what the problem is. I think its just that the booth is susceptible and as you say Palm, it's probably the setup as a whole.

The thing is I want to record using the Digital out. The volume for which is determined by the Master Output Level. But now I'm "forced" to connect my monitors on the Master Out as well. The output levels are quite high which is perfect for recording purposes(seeing as the digital out is set at -20dB) but way too loud for my monitors.

Having the Master set low also makes monitoring limited. I like to use a combination of one eared monitoring and listening to both in the headphones. The Cue/Master Mix becomes a pain with Master so low.

Thanks for the responses

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What speakers do you have? Make, model? This way I can look at the scamatics and maybe figure out what the problem is. It sounds like the two don't to play nice. There are ways to make them.

The digital out is typically independent from the master output. Meaning your master volume doesn't effect the digital out. As long as there's signal coming from one of your inputs, the signal is going to the digital out. Regardless if your master volume is up or not. Once again it should be independent. I know it's that way with the Denon's.

Give it try let me know if it works.

quote:

Originally posted by palm i had this problem when connecting master to a computer and booth to a stereo while doing internet-radioshows. using shorter cables helped. balanced cables would also help i guess, but the booth isnt balanced i think. this was with djm500 btw. shorter cables, keep them away from powercables etc etc. the problems isnt one device, its a system problem.

Another thing you can do in a situation like that is, using direct boxes. There's several models which work great on mixers and computers. I use the Whirlwind PCDI models. Radial Engineering also makes a really good one too. I don't remember the model number though.

Last edited by Brandt Slater on Feb-28-2010 at 00:29

The Digital is linked to the Master level on the Djm700. I thought it would be like the normal Record out and be independent but unfortunately not.

I have a pair of Behringer Truths B2031A's, I'll try moving them away from the mixer and see if anything changes. I'm leaving the other equipment off to keep things simple btw.

The Truths actually give a thud when turned on, not sure if that's normal??

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thats normal. most amps in monitors doesnt have soft-startup.