Annoying high-pitched whine (no, it's not the singer)

Jonathangus

Probably our best gig yet last Saturday (we had drunk people dancing and everything!), but I was plagued by this noise from my rig - see clip.

• Not affected by using a cable instead of wireless.
• Not affected by bypassing board and going straight into amp.
• Gets louder/quieter depending on how I was standing.
• Reduced by turning guitar volume down.
• Cavities have shielding paint, pickup wires are braided, wiring through channels is 4-core and shield.
• Also tried bandmate's Les Paul with humbuckers and still noisy.

Where's it coming from?

ICBM

An induction loop.

Jonathangus

ICBM said:

An induction loop.

As in, those things for hard-of-hearing people?  I guess the only option is to ask the venue to switch it off, if we play there again?

Sporky

I concur, and yes. I don't think it could reasonably be argued that the induction loop is required for equality of access while the band is playing. 

Jonathangus

Thank you, gents.

ICBM

Jonathangus said:

As in, those things for hard-of-hearing people?  I guess the only option is to ask the venue to switch it off, if we play there again?

Yes, or use a guitar without magnetic pickups - a Line 6 Variax should actually work perfectly.



(That's genuinely a serious suggestion!)

Keefy

ICBM said:

Jonathangus said:

As in, those things for hard-of-hearing people?  I guess the only option is to ask the venue to switch it off, if we play there again?

Yes, or use a guitar without magnetic pickups - a Line 6 Variax should actually work perfectly.



(That's genuinely a serious suggestion!)

But the toanz, who will look after the toanz?

Al_Nico

Sounds like the PA ringing at about 2.5khz. If you have a eq on the desk try reducing around this frequency.

When the PA is doing this you can affect the feedback by moving about and making sounds and feels like the problem is with whoever is making sounds around that frequency.

Jonathangus

It was coming from the amp.

ICBM

Al_Nico said:

Sounds like the PA ringing at about 2.5khz. If you have a eq on the desk try reducing around this frequency.

When the PA is doing this you can affect the feedback by moving about and making sounds and feels like the problem is with whoever is making sounds around that frequency.

It’s not a PA issue - it’s definitely being picked up by the guitar pickups, because changing the orientation of the guitar affected it.