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DIY Stompboxes => Building your own stompbox => Topic started by: ejbasses on June 08, 2004, 03:24:30 PM

Title: Tech21 Sansamp Bass Driver DI schematic
Post by: ejbasses on June 08, 2004, 03:24:30 PM
Ive seen how ell the GT2 is doing her.

Does any one have aschematic of this baby??? PLEASE!!
Title: Tech21 Sansamp Bass Driver DI schematic
Post by: zener on June 08, 2004, 03:29:37 PM
sensya na pero... madaling araw pa/na ah :wink:  tulog uli/na  :mrgreen:  
(local language)
Title: bump
Post by: ejbasses on June 09, 2004, 01:15:52 PM
bumperooney

hehe nice one zener

Please gotta have a schem of one of these things.

calling all bassists out there? has any body even tried taking a peak inside?
Title: Tech21 Sansamp Bass Driver DI schematic
Post by: niftydog on June 09, 2004, 07:12:52 PM
yeah, I've pulled the back off.  surface mount, tiny components, incredibly high density circuit... I have no idea what ICs are used. not the kind of thing I'd try DIYing...
Title: Tech21 Sansamp Bass Driver DI schematic
Post by: cd on June 09, 2004, 09:57:45 PM
Is the circuit not potted (i.e. under a huge black plastic square)?  I was under the impression it was.  If not, I might have to pick one up to reverse engineer.
Title: Tech21 Sansamp Bass Driver DI schematic
Post by: niftydog on June 09, 2004, 10:51:52 PM
well... haven't looked on the underside of the board, the pot knobs are glued on and I didn't want to go to that extent.  But from memory it's a dual layer board with SMD on both sides.  Parts of it may be potted.  I'll have another look if you like... but I think you're talking fairly intense project here!
Title: Tech21 Sansamp Bass Driver DI schematic
Post by: cd on June 09, 2004, 11:23:37 PM
No need to go to any trouble, I was mostly thinking out loud.  If a schematic is going to surface, it's not going to be through me - my rule of thumb is that if it's going to be more expensive to clone than to buy, forget it (used ones go for $100-125).
Title: Tech21 Sansamp Bass Driver DI schematic
Post by: moosapotamus on June 10, 2004, 02:35:12 PM
SABDDI
(http://www.moosapotamus.com/SABDDI.gif)
Yeah, I wouldn't expect a scheme of this one to be surfacing any time soon.

~ Charlie
Title: woah!
Post by: ejbasses on June 11, 2004, 12:29:50 AM
that isnt too DIY friendly is it?
hehe

I guess ill just have to save up for one. Ill build the GT2 instead.
Title: Tech21 Sansamp Bass Driver DI schematic
Post by: J. Luja on June 11, 2004, 02:19:13 AM
QuoteYeah, I wouldn't expect a scheme of this one to be surfacing any time soon.

Well, not unless I can get my hands on one. It does look more simple than the gt2, but I don't know anyone that has one that I could borrow.

-Jeremy
Title: Tech21 Sansamp Bass Driver DI schematic
Post by: Fp-www.Tonepad.com on June 11, 2004, 06:42:08 AM
If anyone can pull this one off it's J Luja!

I'll be waiting for the schem to make the layout ;)

Fp
Title: Tech21 Sansamp Bass Driver DI schematic
Post by: cd on June 11, 2004, 10:56:13 AM
How do you get around the block of epoxy?
Title: Tech21 Sansamp Bass Driver DI schematic
Post by: casey on June 11, 2004, 12:05:13 PM
on the bottom left hand corner of the circuit board, it looks as if
it has a couple of bad solder joints that needs to be fixed....  :)

try this link out, it's not the sansamp, but it might be better:

http://www.albertkreuzer.com/pics/el/pre/schem/preamp_sch21.gif
Title: Tech21 Sansamp Bass Driver DI schematic
Post by: J. Luja on June 11, 2004, 01:22:37 PM
QuoteHow do you get around the block of epoxy?

soldering iron at 800 degrees with a chisel tip I don't mind getting ruined
dental picks
scalpel
lots of ventilation

the board looks like this when I'm done
http://www.axiomdrift.com/schematics/DD%20board.jpg
Title: !
Post by: ejbasses on June 14, 2004, 04:53:28 AM
Some body get J. Luja an SABDDI quick!!!!!

well J. Luja i guess my fate is in your skillfull hands.
Title: Tech21 Sansamp Bass Driver DI schematic
Post by: mikeb on June 14, 2004, 09:03:56 AM
I'd be pleased to tryout any pcb layouts (or just build it from a schematic); this bass player can be 'cheap' as much as any of you guitarists .... ;)

Mike
Title: Tech21 Sansamp Bass Driver DI schematic
Post by: Ansil on August 04, 2004, 10:56:07 AM
Quote from: J. Luja
QuoteYeah, I wouldn't expect a scheme of this one to be surfacing any time soon.

Well, not unless I can get my hands on one. It does look more simple than the gt2, but I don't know anyone that has one that I could borrow.

-Jeremy

i have someone who is willing to let you look at theres and no epoxy on the back of it either.. haven't seen the front completely but from what i have seen it is not epoxied.    email me.  or reply to the pm i sent ya.