EHX - Holy Grail  [schematic]

All about modern commercial stompbox circuits from Electro Harmonix over MXR, Boss and Ibanez into the nineties.

EHX - Holy Grail

Postby platinum321 » 20 Nov 2007, 00:07

I was wondering if anyone had anything on this particular pedal?

Thanks for any info. :D
User avatar
platinum321
 
Posts: 49
Joined: 04 Sep 2007, 14:56
Has thanked: 0 time
Have thanks: 0 time

Postby tuemmueh » 20 Nov 2007, 00:26

Yes. It's DSP-based. Sorry ... Buy one and rebox it, that's the only thing you can dby (do by yourself) to mod this circuit without being in programming-stuff.
tuemmueh
Solder Soldier
 
Posts: 166
Joined: 27 Jun 2007, 00:30
Has thanked: 7 times
Have thanks: 2 times

Postby platinum321 » 20 Nov 2007, 02:03

Rrrrrrrrrrrats! :?

Thank you for the info. May as well delete this topic eh?
User avatar
platinum321
 
Posts: 49
Joined: 04 Sep 2007, 14:56
Has thanked: 0 time
Have thanks: 0 time

EHX - Holy Grail  [schematic]

Postby echodeluxe » 12 Sep 2008, 23:12

hey, i got a holy grail with a fried resistor and i need the schematic! can anyone help?
You do not have the required permissions to view the files attached to this post.
echodeluxe
 
Posts: 22
Joined: 24 Jul 2008, 20:36
Has thanked: 0 time
Have thanks: 0 time

Re: EH Holy Grail Schematic?

Postby echodeluxe » 13 Sep 2008, 04:27

nevermnind.
echodeluxe
 
Posts: 22
Joined: 24 Jul 2008, 20:36
Has thanked: 0 time
Have thanks: 0 time

Re: EH Holy Grail Schematic?

Postby mensur » 17 Sep 2008, 14:12

Here you go!!!.
mensur
Breadboard Brother
 
Posts: 67
Joined: 03 Mar 2008, 11:31
Has thanked: 6 times
Have thanks: 27 times

Re: EH Holy Grail Schematic?

Postby analogguru » 17 Sep 2008, 14:46

mensur wrote:Here you go!!!.

Please don´t post copyrighted schematics. They will be removed like in this case.
Feel free to send it your friends instead by e-mail on request.

analogguru
There´s a sucker born every minute - and too many of them end up in the bootweak pedal biz.
analogguru
Old Solderhand
 
Posts: 3286
Joined: 26 Jun 2007, 14:58
Has thanked: 0 time
Have thanks: 112 times

Re: EH - Holy Grail

Postby BJF » 03 Oct 2008, 13:03

Hi,

If that's the 47R resistor that sits just before the regulator you can replace that with an 1N4002 diode.
The supplies these come with leave a little too high voltage and these are better driven by a stabilized 9V at least 200mA supply.


Have fun
BJ
User avatar
BJF
Resistor Ronker
 
Posts: 269
Joined: 03 Nov 2007, 11:37
Has thanked: 2 times
Have thanks: 52 times

Re: EH - Holy Grail

Postby Barcode » 03 Oct 2008, 22:34

BJF wrote:Hi,

If that's the 47R resistor that sits just before the regulator you can replace that with an 1N4002 diode.
The supplies these come with leave a little too high voltage and these are better driven by a stabilized 9V at least 200mA supply.


Have fun
BJ

i find that in some units i have worked on or owned, that at least 500mA was required (which is the rating of the stock adapter) to keep the reverb clean.
User avatar
Barcode
Diode Debunker
 
Posts: 820
Joined: 27 Sep 2007, 18:03
Has thanked: 14 times
Have thanks: 35 times


Return to Modern Stompbox Effects (1975 - ...)

Who is online

Users browsing this forum: No registered users and 7 guests