CHASM REVERB

[deadastronaut]

@threpwood:  here ya go...sorry guys should have put this in the pdf..(which i will update ok)

[Cozybuilder]

R25 and D6, right?

[deadastronaut]

Yep...

[samhay]

Doesn't seem to have the ground trace?

[deadastronaut]

hmmm...i see...

out of curiosity i just wired up a dpdt as above with an unboxed populated working chasm ( plugged into breadboard for testing)...with led ground going to ground pad on main pcb..

led works on/off...but i still get a little verb on bypass...hmmmm....

@george: how did you wire yours?..

for reference.

[Cozybuilder]

Maybe simplifying to something like this would be worth a try (2N7000 or other MOSFET):

[deadastronaut]

@cozy: we shouldn't need to add anything at all....

me and sam worked on the switching to be totally silent so it didn't bleed /pop when bypassed/on etc...which it did perfectly on my diy pcb prototype...

and chi boy said his fabbed pcb build was fine too...so am curious to see how chi boy wired his switch/led too.....chi boy?...are you out there?..


i have it working ok now, no verb on bypass...

however i get a thump when switching...so am desperate to see chi boys fs/led setup

[mmlee]

I did mine like this and haven't had any issues.



CLR off SW2 - CLR to Anode LED - Cathode LED to SW3

Looks pretty much the same as your PCB at the top of this page

[deadastronaut]

ok, cheers man, cool.

i guess its because mine isn't boxed then...

i'll get it boxed up

[threepwood]

My finished Chasm. Really love how this sounds Rob. Thanks for a great PCB

Keep up the good work!

[Maik]

Finished mine yesterday, sounds realy cool but it has a loud whistle.
And with decay full up it sounds nearly like a slapback echo (but with reverb sound).
The whistle didn´t change when I tunr the pots.
With osc on the whistle is incredible loud.

[deadastronaut]

Hi maik..
Something don't sound right with that...

Never had that issue...

check regulator, pot wiring etc, values..

[Maik]

Hi Rob
will do.

[deadastronaut]

i'm boxing a chasm up today..

so if you need voltages etc ....

[Maik]

yes please

[deadastronaut]

will be later ok....just had to repaint my etch...

[deadastronaut]

finished my latest chasm reverb ... the 'CELTIC CHASM'

[Maik]

Damn Rob, that baby looks realy cool!

[deadastronaut]

Cheers man....yea i'm pleased with how this one came out..

have you sorted yours yet?...

[bluebunny]

Sweet.