EHX - Axis  [schematic]

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

EHX - Axis  [schematic]

Postby pf_fan » 15 Aug 2007, 11:37

pf_fan
Breadboard Brother
 
Posts: 74
Joined: 30 Jun 2007, 15:17
Has thanked: 0 time
Have thanks: 5 times

Postby markm » 15 Aug 2007, 16:16

Hey, there's some nice soldering huh? :P
Join together with the "Banned"!
User avatar
markm
Diode Debunker
 
Posts: 787
Joined: 26 Jun 2007, 15:41
Location: U.S.A.
Has thanked: 0 time
Have thanks: 7 times

Postby krome_magnon » 19 Aug 2007, 13:40

Wonder if the decaying sponge thing and the spiderwebs add some vintage tone mojo?
User avatar
krome_magnon
Breadboard Brother
 
Posts: 91
Joined: 15 Jul 2007, 21:41
Has thanked: 64 times
Have thanks: 18 times

Postby soulsonic » 19 Aug 2007, 22:45

krome_magnon wrote:Wonder if the decaying sponge thing and the spiderwebs add some vintage tone mojo?


Hey that's at least half of it! Once I cleaned the yellow "mystery powder" (decayed foam) out of my old Shure 55 it wasn't quite the same. :lol:
User avatar
soulsonic
Old Solderhand
 
Posts: 3503
Joined: 27 Jun 2007, 04:38
Location: Ithaca, NY
Has thanked: 53 times
Have thanks: 255 times

Postby Meanderthal » 04 Sep 2007, 00:56

I've built this... very much one o them in-a-godda-da-vida type fuzzes. Cool if ya wanna sound... old... :D
Meanderthal
Breadboard Brother
 
Posts: 77
Joined: 03 Sep 2007, 23:24
Has thanked: 0 time
Have thanks: 0 time

Postby analogguru » 04 Sep 2007, 02:30

I've built this...


Hmmm....really ?.....from the schematic circulating around ? then you haven´t build THIS....

Because THIS is more like the Mosrite Fuzzrite, Orpheum Fuzz, Shin-ei FY-2 (or similar units) with a 100k and 47k in the collector path of the second transistor and a 100n from the node between the resistors to GND.

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

Postby Dan N » 04 Sep 2007, 09:23

Thanks for the photos!

AG, what would be the PNP compliment to the 2N5133?
User avatar
Dan N
Resistor Ronker
 
Posts: 273
Joined: 26 Jun 2007, 19:54
Location: Oregon USA
Has thanked: 53 times
Have thanks: 19 times

Postby analogguru » 04 Sep 2007, 10:03

2N 5133: 18V/50mA/200mW ß:60-1000/1mA fg>40MHz

A BC239C, a BC 550C or a 2N5088 should be usable as a replacement.

So a PNP equivalent would be for example a BC 309C or a BC 560C...

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

Postby Meanderthal » 04 Sep 2007, 12:15

analogguru wrote:
I've built this...


Hmmm....really ?.....from the schematic circulating around ? then you haven´t build THIS....

Because THIS is more like the Mosrite Fuzzrite, Orpheum Fuzz, Shin-ei FY-2 (or similar units) with a 100k and 47k in the collector path of the second transistor and a 100n from the node between the resistors to GND.

analogguru


Yep, it is one of those... the weird 'tone' control, etc. It wasn't the Mayer tweaked FF, rather it was the Orpheum type- AKA the 2 knob Foxey Lady.

However, I did build it from a schematic that had been floating around for a while, so it may not be exactly the same(didn't compare).

I used 2n5133, I socketed the trannies, and found that they had more grit than 2n5088,89, or mpsa18. Or maybe I fooled myself because they look so cool... :lol:
Meanderthal
Breadboard Brother
 
Posts: 77
Joined: 03 Sep 2007, 23:24
Has thanked: 0 time
Have thanks: 0 time


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

Who is online

Users browsing this forum: Google [Bot], kh602 and 11 guests