DVD-Software.info

[ptk]

Last night I had a strange problem with feedback - can anyone shed any
light on this? Details as follows:

Guitarist playing an American Strat (unmodified, so it's got single
coil pick-ups which aren't supposed to be microphonic) through a
Marshall AVT 150 amp. Amp is on the floor and because it's a very small
venue, he's controlling his volume and tone etc. Repositioning the amp
has no effect

He's using a Behringer cardiod microphone (can't remember the model
offhand but it's a £30 job that he's used for a while and he likes the
sound of his voice through it)

I'm getting what sounds like microphonic feedback through his amp at
ridiculously low volumes. This can only be stopped by
a. muting the PA mike channel he's using completely, which is a problem
as he's singing harmonies on a lot of the stuff. Adjusting the treble
on his amp back down to zero has little effect.
b. making him stand in particular positions, which makes it difficult
for him to sing

Adjusting the foldback floor monitors or disabling them completely have
no effect. No one else has any feedback problems of any type, although
the sound in the room is quite muffled regardless of what settings the
EQ is.

If he changes guitar to an Epiphone Les Paul with twin humbuckers, the
problem disappears.
We changed everything (guitar leads, pedals, mains power supply, pickup
settings) in the set up but the problem persisted.

This has happened once before in a different venue.

This might be a guitar/amp problem, so I'll be posting this elsewhere,
but any thoughts/observations would be appreciated.

Pete

[Ron(UK)]

ptk wrote:

[Steve White]

"ptk" <pete@fabmanbro.co.uk> wrote in message
news:1131273713.464243.164670@g14g2000cwa.googlegroups.com...

[ptk]

No, I checked. No induction loop was present.

[Hubert Barth]

"ptk" <pete@fabmanbro.co.uk> wrote:

[Geezer Sonics]

In article <1131273713.464243.164670@g14g2000cwa.googlegroups.com>,
"ptk" <pete@fabmanbro.co.uk> wrote:

[Phil Allison]

"ptk"

Last night I had a strange problem with feedback - can anyone shed any
light on this? Details as follows:

Guitarist playing an American Strat (unmodified, so it's got single
coil pick-ups which aren't supposed to be microphonic) through a
Marshall AVT 150 amp. Amp is on the floor and because it's a very small
venue, he's controlling his volume and tone etc. Repositioning the amp
has no effect

He's using a Behringer cardiod microphone (can't remember the model
offhand but it's a £30 job that he's used for a while and he likes the
sound of his voice through it)

I'm getting what sounds like microphonic feedback through his amp at
ridiculously low volumes. This can only be stopped by
a. muting the PA mike channel he's using completely, which is a problem
as he's singing harmonies on a lot of the stuff. Adjusting the treble
on his amp back down to zero has little effect.
b. making him stand in particular positions, which makes it difficult
for him to sing

Adjusting the foldback floor monitors or disabling them completely have
no effect. No one else has any feedback problems of any type, although
the sound in the room is quite muffled regardless of what settings the
EQ is.

If he changes guitar to an Epiphone Les Paul with twin humbuckers, the
problem disappears.
We changed everything (guitar leads, pedals, mains power supply, pickup
settings) in the set up but the problem persisted.

This has happened once before in a different venue.

This might be a guitar/amp problem, so I'll be posting this elsewhere,
but any thoughts/observations would be appreciated.



** If I ever needed a case study & description of what an active
induction loop does to a live band with electric guitars - the above would
be ideal.

It has every element, the vocal mic is picking up the Marshall amp and
feeding it into the pickup on the Strat via the loop.

Turning off the mic or changing to another type of guitar are the only solid
fixes.

Classic stuff.



........ Phil

[Pooh Bear]

ptk wrote:

[ptk]

I asked someone. It was a back street pub owned by a Hells Angel. They
don't have induction loops :-)
Pete

[ptk]

Yes, all of them

[ptk]

Thanks Phil. Appreciated.
Pete