[sdiy] Dry/Wet effect relay that makes 'click' noise on changes...

[jpdesroc]

Hi everybody,

I just finished my DIY Hammond Vibrato/Chorus effect for guitar this 
week
and am pretty happy with the final effect it gives to my old 
stratocaster.
3 vibrato, 3 chorus effects, very impressive !
BUT I'm facing a last problem on this project..
It uses a PANASONIC JQ1P-12 SPDT relay (K1) to switch
the signal from clean to effect, but every time I switch
the relay to change its state a big 'click' is heard in the audio 
output.
I used that relay because I had some on hand to be used.
I checked for any DC voltage on all of its contacts but there are not.
All the contacts are at zero volt stable.. no DC.
I noticed at the scope that its contacts are bouncing a lot on all state 
changes
and that is what makes that noise.
Maybe its because this type of relay is rated @ 10amp on its contacts.
A too big coil 'snap' on the contacts ?
I'm considering to change the type of relay for a quieter one.
Maybe a small reed relay would do instead..
Please have a look at the following schematic where the relay is used:

http://www.arcenson.com/public/Hammond_scanner_main_board_schematic.pdf

This is part of the overall project.
I need your suggestion on a good silent SPDT relay working at 12VDC.
Thanks.