Author Topic: CHASM REVERB  (Read 200163 times)

deadastronaut

CHASM REVERB
« on: November 20, 2013, 12:50:02 PM »
ok, here it is...after a few months of frustration and breadboarding and getting help from samhay/slacker/merlin/ etc etc...thanks guys. ;)

introducing the ''CHASM REVERB''

i finally nailed this bugger...and thought it deserved its own thread. get your popcorn ready.... ;)





i was going to release the pdf's only by pm due to being ripped off recently by some brazillian @#$%er (long story)..but i can't be arsed with all that hassle. and goes against my sense of shared community etc.

and seems a shame to not share due to bad apples with no morals at all.....

however,  I will seriously re-iterate...this is NOT FOR COMMERCIAL USE...(as some @#$%ers don't seem to understand this phrase :icon_evil:..you have been warned. :icon_evil:



anyway i have a batch of pcb's for this if people want them, Ģ8.50 GBP each. (includes worldwide post/paypal fees)  pm me ok.

here are the files to print off your own pcb too....just don't take the piss ok!!!...you have been warned...seriously. :icon_evil:

verified :

https://dl.dropboxusercontent.com/u/7464107/CHASMREVERBLAYOUT.pdf
https://dl.dropboxusercontent.com/u/7464107/CHASMPCB.pdf









happy building + merry xmas. ;)












Kipper4

Re: CHASM REVERB
« Reply #1 on: November 20, 2013, 01:10:47 PM »
Sweet Reverb Rob.
Very nice indeed I love the tails thats great.
I've never used the bricks. Are they fragile? Hard to work with? How and where is it mounted?
Thanks
Rich
BTW wheres the best place to source belton bricks pls? Uk based
« Last Edit: November 20, 2013, 01:51:40 PM by Kipper4 »

BuGG

Re: CHASM REVERB
« Reply #2 on: November 20, 2013, 01:53:49 PM »
Excellent!   Can not wait!! 

Maik

Re: CHASM REVERB
« Reply #3 on: November 20, 2013, 02:48:25 PM »
Damn Rob, another "must have"!
Sounds realy cool, thanks for sharing.
But where is the tone poti?
And whatīs that Chorus?
« Last Edit: November 20, 2013, 03:01:46 PM by Maik »

therealfindo

Re: CHASM REVERB
« Reply #4 on: November 20, 2013, 02:53:55 PM »
Is this true bypass? :P

deadastronaut

Re: CHASM REVERB
« Reply #5 on: November 20, 2013, 03:01:49 PM »
nope..it has tails ..

 being buffered is a good idea anyway imo...as most people will have this at the end /or near end of their chain...

i had this on a TB breadboard so i know the buffered bypass is the same sound as TB when tested... ;)


therealfindo

Re: CHASM REVERB
« Reply #6 on: November 20, 2013, 03:05:06 PM »
nope..it has tails ..

 being buffered is a good idea anyway imo...as most people will have this at the end /or near end of their chain...

i had this on a TB breadboard so i know the buffered bypass is the same sound as TB when tested... ;)



Just yankin' your chain.. have been following the thread ;)

You're right, buffered at the end of the chain is not a bad thing..

samhay

Re: CHASM REVERB
« Reply #7 on: November 20, 2013, 03:10:49 PM »
Nice demo Rob - looks like it does everything you set out to do, and I can't hear a hint of pop.
Any chance you could post a schematic of the final version? I have lost track, and can't really face wading back through the other thread.

Now, for a Mk III, shall we aim for some modulation and a kitchen sink switch?

Oh - Rich, the bricks are pretty robust. You can break the pins off then (don't ask), and probably cook them if you try really really hard, but are no worse than any other IC. You can get them from das Musikding (http://www.musikding.de/Accutronics-BTDR-2H-L_1). Postage should take about a week.

Jdansti

Re: CHASM REVERB
« Reply #8 on: November 20, 2013, 03:29:14 PM »
Thanks Rob, Sam, Merlin, and all others who contributed to this! :)

Rob, I'll send you a PM for purchasing a couple of boards.

Morocotopo

Re: CHASM REVERB
« Reply #9 on: November 20, 2013, 03:31:23 PM »
Rob, thatīs a great pedal. Etched box, right? If it is, Iīve never seen a tidier etch. Ever!!

Hate to ask, because of what you commented about the ripoff, but: Will you release a schem? Or is it in the other thread? I always like to see a schem when building.

Thanks for sharing.

psychedelicfish

Re: CHASM REVERB
« Reply #10 on: November 20, 2013, 03:34:31 PM »
Looks and sounds great!

Does anyone know where I can get a brick in or near New Zealand? All the websites I've checked work out at around NZ$30 per brick, with about NZ$10 of that being shipping...  >:(

haveyouseenhim

Re: CHASM REVERB
« Reply #11 on: November 20, 2013, 03:38:31 PM »
Looks and sounds great!

Does anyone know where I can get a brick in or near New Zealand? All the websites I've checked work out at around NZ$30 per brick, with about NZ$10 of that being shipping...  >:(

Try tubesandmore.com   They are around $14. I don't know what shipping to NZ would be.

KazooMan

Re: CHASM REVERB Gut Shot?
« Reply #12 on: November 20, 2013, 04:32:57 PM »
Great looking and sounding pedal.

Any chance of getting a gut shot to see how you stuffed all the goodies in the box?

gtangas

Re: CHASM REVERB
« Reply #13 on: November 20, 2013, 05:39:09 PM »
Just Sweet!!!!!!


chromesphere

Re: CHASM REVERB
« Reply #14 on: November 20, 2013, 06:22:05 PM »
Rob...your killing me...im going to have to make another one now :)

Edit: Heres another sound sample for you to critique of the chasm reverb.  It was an early iteration (flying saucer reverb) but assume it still sounds much the same as this newer version.  I cant praise this reverb enough.  I use it ALL THE TIME:

« Last Edit: November 20, 2013, 08:50:28 PM by chromesphere »

clipman3

Re: CHASM REVERB
« Reply #15 on: November 20, 2013, 07:34:33 PM »
This is incredible! Nicely done, sir  ;D

SISKO

Re: CHASM REVERB
« Reply #16 on: November 20, 2013, 09:46:01 PM »
Wowww! Good work on reverb!! Care to share graphics? Its awesome! Im definetely biulding this

John Lyons

Re: CHASM REVERB
« Reply #17 on: November 20, 2013, 10:35:31 PM »
Thanks for posting Rob.
Are you going to post the schematic or is it in the other thread?

Jdansti

Re: CHASM REVERB
« Reply #18 on: November 21, 2013, 12:32:50 AM »
Could someone please confirm this BOM based on Rob's layout? (https://dl.dropboxusercontent.com/u/7464107/CHASMREVERBLAYOUT.pdf)

Chasm Reverb

Diodes:
Pwr 1N4001x 1
D1-D4 1N4148 x 4

Transistors:
2N5457 (JFET) x 2
2N7000 (MOSFET) x 1

ICs:
IC1 TL074 x 1
VReg LM7805 x 1
Rvb BTDR 2-H L x 1

Caps
100nF x 3
10nF x 1
100pF x 3
470nF x 1
1μF NP X 1
10μF x 6
47μF x 1
100μF x 2

Resistors:
100R x 1
1k x 4
2.2k x 2
5.6k x 1
10k x 4
22K x 5
47k x 1
56k x 1
100k x 1
1M x 1

Pots
B10k x 2
B22k x 1 (sub B25k)
A100k x 1

Jumpers x 3

LED x 1

Switches:
SPDT x 1
DPDT mom x 1

Rob-Also please let me know if you see anything out of whack. Thanks!

Valoosj

Re: CHASM REVERB
« Reply #19 on: November 21, 2013, 06:56:33 AM »
Nice work Rob!

Just wondering, no more tails switch?