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EHX - Slapback Echo (factory schematic 1978)

Posted: 17 Dec 2007, 20:56
by modman
Don't really know whether it's correct/rare or worth posting at all, but thought I'd share it anyway:

(link deleted, check Stephen's link below)

CJ Eletronics lists it as 'non proven' (that it's the EH SB or that it is correct?)

modman

Posted: 17 Dec 2007, 21:36
by Stephengiles

Posted: 17 Dec 2007, 23:14
by modman
Wow, thanks big boy! :wink:

Posted: 18 Dec 2007, 00:34
by The Rotagilla
I don't have both schematics handy right now but how did this differ from the EH Full Double Tracking Effect?

Posted: 18 Dec 2007, 11:23
by Stephengiles
Neither do I, but it may just have been a name change. On the other hand I believe the FDTE used the MN 3005 with a 4047 clock driver.

Posted: 18 Dec 2007, 12:30
by The Rotagilla
The copy I have of the Full Double Tracking Effect schematic says "Revised Slapback Echo" and ran off a CD4047BE and a MN3005.

Posted: 03 Jan 2008, 02:31
by BJF
Hi,

The Slap back uses an SAD 1024 and it does not really give a slapback effect as delaytime is too short.

Yes I have serviced one of those, didn't look too close on the schematic but it appears to be fine.

This one was a little disappointing

Have fun
BJ

Re: EH - Slapback Echo (factory schematic 1978)  [schematic]

Posted: 01 Dec 2010, 04:29
by Scruffie
Redrawn Schematic :-
Slap Back Echo.gif
I might see about converting this one to the 3007 & 3207.