Stage hum from my monitor for keys only

[rick rankin]

I am always happy when a sound tec in a theatre production asks me if I want 2 direct boxes for stereo keys..hell ya..so I part with my 2 low imp. L andR on my YamahaMG06X keyboard mixer..so Iam left with L andR 1\4 inch. for my personel monitor..I use L side and my monitor lets out a buzz..which for setup time restraints leaves me with no choice but to give up stereo in order for my mon to use low imp.there must be a way that I can get the best of both worlds..and there is polarity switch on the monitor.Its a great monitor 1000w and I only use a quarter of it with pads on the mixer.play pink floyd so the house is giving it to me..last tging you want is a buzz

 

[happyrat1]

What happens if you try and feed something else thru the monitor? Is it a high frequency buzz or a 60 Hz hum?

It could be a ground loop issue or it could be a problem with the monitor's internal circuitry.

Does it buzz with nothing connected and the volume cranked up?

Gary

 

[rick rankin]

What happens if you try and feed something else thru the monitor? Is it a high frequency buzz or a 60 Hz hum?

It could be a ground loop issue or it could be a problem with the monitor's internal circuitry.

Does it buzz with nothing connected and the volume cranked up?

Gary

only buzzes when Iam playing big theatres.my monitor loves low imp.plugs.I can play a small club and use 1/4 with no problem

 

[happyrat1]

Maybe add another DI box?

Gary

 

[CowboyNQ]

So what I think you are saying is you're going stereo XLR out to FOH and using 1/4" L only to your personal monitor? Have you tried using the "phones" socket into your monitor instead? It would probably require a TRS plug in your mixer to two inputs in your monitor. Or you could use two monitors and then get FOH AND your monitoring in stereo. Either way, the collateral benefit here is you hear both channels, not just "L".

Another thought - is your monitor, KBs and mixer all coming from the same power source? If not, this can cause ground loop.

Third thought - you should be telling the sound engineer that you want to go to FOH in stereo, not the other way around. You pay them, they work for you.

Fourth thought - what's to stop you going to FOH with the two 1/4" plugs? Then you can use your XLR for your monitor, if you get better results that way.

 

[delaware dave]

I looked at the owners manual for this model. Towards the back of the manual there is a section called "Jack List - Pin Alignment". The 1/4" outputs on your mixer are balanced outputs. Are you using a TRS 1/4" into your monitor or a TS 1/4" plug? You should be using a 1/4" TRS; this is a balanced jack and most likely is the source of your issue.

- What is the difference between balanced or unbalanced?

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[CowboyNQ]

The 1/4" outputs on your mixer are balanced outputs.

If used with TRS. Otherwise they're unbalanced.

 

[Biggles]

Rick

Paul (Cowboy) has posted an image from your Mixer’s manual that clearly shows what type of lead to use in each socket, Delaware Dave guided you towards this section of the manual.

What type of lead to use is dependent upon which sockets are in use.

Can you advise precisely which sockets you are using for what action and what type of 1/4 jack lead you are using in each socket?

 

[CowboyNQ]

Why do I get the feeling this is one of those threads where OP may never be seen again?

 

[Biggles]

Yeah, so sign since a Thursday so either no gigs or they are sorted and found out they have been using the wrong leads.

My bet is that it is a case of .... if all else fails RTFM.

 

[delaware dave]

Why do I get the feeling this is one of those threads where OP may never be seen again?

21st century antics. No appreciation for others' research on their behalf. "That's the way of the world...".

 

[happyrat1]

Need I remind you folks that most people are scum?

Gary

 

[Biggles]

The Op have averaged one post every 95.5 days since they joined the forum therefore it is a little early to expect a response.

 

[Rayblewit]

You guys are a little harsh I reckon.
The guy posted Friday morning (my time) and it is now Sunday morning (my time). Only been 2 days.
Maybe OP has busy weekend.
Give him a break! There is alot to digest.
Ray

 

[happyrat1]

It's really no skin off of my nose one way or the other. This is why I generally keep my initial answers terse and to the point unless the OP actively engages in the thread and supplies more information.

But the reality of this forum is about 70% ghost threads where the question is asked, answered and never to be heard from again.

For some people a simple thank you seems to be too difficult sometimes.

Gary

 

[Rayblewit]

Why do I get the feeling this is one of those threads where OP may never be seen again?

You guys are a little harsh I reckon.
The guy posted Friday morning (my time) and it is now Sunday morning (my time). Only been 2 days.

He should have responded by now.
I was hopeful he would jump in and show some gratitude.
Paul, it just goes to show you have better foresight than me! Funny thing is, I scrolled through his profile and discovered he is also keys player in a PF tribute band. What a cooincidence.

Moving forward now . .

Ray

 

[CowboyNQ]

he is also keys player in a PF tribute band. What a cooincidence.

They're everywhere Ray - particularly in the Northern Hemisphere.

 

[Biggles]

They're everywhere Ray - particularly in the Northern Hemisphere.

So true.

We cannot walk down the High Street in any major Town or City without seeing banners for PF Tribute bands.

And if not PF then Bowie, Simply Red, Bolan, Bootleg Beatles, BGees, you name it we have a trbute band doing it.

Talk of one gigging soon called ..... Returning Echoes of Pink Floyd.