Query regarding Boss RC20XL

["Rachel Clutterbuck" <rachelclutterbuck@hotmail.com>]

Can anyone give advice on looping vocals thru a Boss RC20XL?  I use my 
loop 
station to loop electro-acoustic guitar, percussion (djembe,shaker,etc) 
and 
vocals.  When at home playing thru my pedal and amp it all sounds lovely - 
the vocals are crisp, but when playing out thru a PA - the vocals thru the 
pedal are so muffled it's almost not worth doing!

How can i fix this?

Do I need an external mixer to plug into the pedal - so I can alter the 
tone 
of the vocals before they get to the PA?  Or someone told me something 
about 
the PA sending the loop signal backwards...

If anyone has any advice I would really appreciate it - am really stuck!

Thanks
Rachel
(www.myspace.com/rachelbythestream)

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