Author Topic: CHASM REVERB  (Read 200170 times)

gtangas

Re: CHASM REVERB
« Reply #20 on: November 21, 2013, 07:02:34 AM »
3 jumpers?
I only see 2...

deadastronaut

Re: CHASM REVERB
« Reply #21 on: November 21, 2013, 07:20:01 AM »
yep 2 jumpers only.

@john D : latching dpdt  .not momentary ;)  (you knew that ;)) ...ALPHA is nice.. 8)

@yorick: yeah gave up on tails off/TB option...too much grief


no gut shot at the mo, this one has already gone to a good home,...but because we are only using a dpdt there is room for either putting the brick above the pcb (which i did)
or just above the dpdt..attached by 6 way rbbon wire...  i used a card template for laying it out/cutting wire to length etc..

the next build will have gut shots ok... 8)






Valoosj

Re: CHASM REVERB
« Reply #22 on: November 21, 2013, 07:56:54 AM »
Oh but I don't mean Tails/TB, just plain ol' buffered/no tails  :icon_mrgreen:
I don't always want the reverb to fade out naturally. Is that possible to achieve without grief?

samhay

Re: CHASM REVERB
« Reply #23 on: November 21, 2013, 08:06:16 AM »
Oh but I don't mean Tails/TB, just plain ol' buffered/no tails  :icon_mrgreen:
I don't always want the reverb to fade out naturally. Is that possible to achieve without grief?

Define grief. This might be a better question for the other, slightly more epic, thread.
If you want buffered bypass, then one could add another FET switch to kill the wet signal (rather than the dry signal at the moment) on bypass (this could be switchable). It probably won't pop, but it might. It will need more breadboard time...

However, it's in a big enclosure, so you could just add a second true bypass stomp switch.

moosapotamus

Re: CHASM REVERB
« Reply #24 on: November 21, 2013, 03:34:05 PM »
Wow! That sounds beautiful! 8)

~ Charlie

gtangas

Re: CHASM REVERB
« Reply #25 on: November 21, 2013, 04:07:15 PM »
Board already etched... Hehhe

I don't have any 22k pot... But a 20k should do the job.
Right?? Hehe


Ice-9

Re: CHASM REVERB
« Reply #26 on: November 21, 2013, 05:24:21 PM »
Sounds great Rob, a really great sounding circuit I love it. Might just have to build one a s soon as I get the chance. :icon_cool:

Jdansti

Re: CHASM REVERB
« Reply #27 on: November 22, 2013, 01:07:09 AM »
3 jumpers?
I only see 2...

Thanks guys. Mr. Brain wasn't working at full capacity (that's why I like for others to review my work ;)). I missed the two blue jumpers and thought that 3 of the other resistors said 00k and 00Ω . I'll correct the BOM for this and the switch.

Jdansti

Re: CHASM REVERB
« Reply #28 on: November 22, 2013, 01:16:34 AM »
...so here is the revised BOM:

See Deadastronaut's BOM below.

Thanks Rob!  ;D
« Last Edit: November 22, 2013, 03:25:09 PM by Jdansti »

alanp

Re: CHASM REVERB
« Reply #29 on: November 22, 2013, 02:13:58 AM »
Having a go at a pcb... I dislike wiring pots. Like to check that it's right, though, so I'll wait.

gtangas

Re: CHASM REVERB
« Reply #30 on: November 22, 2013, 04:25:22 AM »
I will start on mine tonight... Yeah

« Last Edit: November 22, 2013, 04:26:56 AM by gtangas »

thanal9999

Re: CHASM REVERB
« Reply #31 on: November 22, 2013, 05:00:59 AM »
At first congratulations for this great design...!!

Now, sorry for the "noobish" question but I am totally inexperienced with fet switching...
Doesn't fet switching requires a momentary switch for the fets to do the latching..?


soupbone

Re: CHASM REVERB
« Reply #32 on: November 22, 2013, 05:05:17 AM »
What  type  of  reverb  is  this?

samhay

Re: CHASM REVERB
« Reply #33 on: November 22, 2013, 05:38:58 AM »
Doesn't fet switching requires a momentary switch for the fets to do the latching..?

As a general rule, no.

What  type  of  reverb  is  this?

It's a 'Chasm' reverb. Not sure if I understand the question, but The BTDR bricks are digital chips that give a pretty ralistic spring verb sound.

stallik

Re: CHASM REVERB
« Reply #34 on: November 22, 2013, 07:13:04 AM »
Nice one Rob!

Waiting for my brick, box ready for drilling. This is going to be the last one in my space series as I finally loose my printer on Monday  :(

deadastronaut

Re: CHASM REVERB
« Reply #35 on: November 22, 2013, 07:42:36 AM »
looks great...

vol mix damp decay are reversed from my version..no matter though.

nice one., 8)

stallik

Re: CHASM REVERB
« Reply #36 on: November 22, 2013, 07:57:38 AM »
Oops! That because I just copied it from the layout and gave no mind to the fact that the view is from below.
Never mind, as you say it matters not..

KazooMan

Re: CHASM REVERB
« Reply #37 on: November 22, 2013, 08:09:08 AM »
Re: The parts list.  My tired eyes only see one 2.2K resistor and two 1M resistors.

deadastronaut

Re: CHASM REVERB
« Reply #38 on: November 22, 2013, 08:32:39 AM »
here ya go..


midwayfair

Re: CHASM REVERB
« Reply #39 on: November 22, 2013, 09:13:12 AM »
Great work as always, Rob. Love the demo, too. (Especially the epic intro. :D)