Building an RM Axis Fuzz
Moderators: VelvetGeorge, BUG
- Xplorer
- Senior Member
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- Joined: Sun Apr 19, 2009 5:27 pm
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Building an RM Axis Fuzz
Hi guys,
thought i'd build an axis fuzz properly, compared to the first time i tried a few years agi : it didn't work properly, and it was too bright, harsh, i don't remember.
But i think i didn't have the proper amp to use with it.
Now, since i love bog tones, i get some very nice bog tones to my ears with a 45/100 and a Dunlop blue Hendrix fuzz, but i'd like to see how it reacts with an axis fuzz ...
since there are plenty of schematics on the web, and that they're mostly all different, i figured i'd start from a gut shot of a real axis fduzz, and compare.
Well, i'm not 100% sure about the cap values, and the pots, or the transistors values.
But it's said to work nicely with some Motorola 2n3904 and 2n3906 . arround 170 - 190 hfe, with Q2 being the higher.
i found such transistors in my stock, and well ... i'll build this
So here it is, my work on a pcb picture, i didn't finish yet.
http://www.flickr.com/photos/28160216@N ... otostream/" onclick="window.open(this.href);return false;
i found a 50k lin pot, a 2k lin pot, and a 250k lin pot for an input bias i'll use ( so i'll can use a wah in front of the fuzz )
Any advices or corrections to this layout ?
it seems that there were about three versions of this axis fuzz so ...
thought i'd build an axis fuzz properly, compared to the first time i tried a few years agi : it didn't work properly, and it was too bright, harsh, i don't remember.
But i think i didn't have the proper amp to use with it.
Now, since i love bog tones, i get some very nice bog tones to my ears with a 45/100 and a Dunlop blue Hendrix fuzz, but i'd like to see how it reacts with an axis fuzz ...
since there are plenty of schematics on the web, and that they're mostly all different, i figured i'd start from a gut shot of a real axis fduzz, and compare.
Well, i'm not 100% sure about the cap values, and the pots, or the transistors values.
But it's said to work nicely with some Motorola 2n3904 and 2n3906 . arround 170 - 190 hfe, with Q2 being the higher.
i found such transistors in my stock, and well ... i'll build this
So here it is, my work on a pcb picture, i didn't finish yet.
http://www.flickr.com/photos/28160216@N ... otostream/" onclick="window.open(this.href);return false;
i found a 50k lin pot, a 2k lin pot, and a 250k lin pot for an input bias i'll use ( so i'll can use a wah in front of the fuzz )
Any advices or corrections to this layout ?
it seems that there were about three versions of this axis fuzz so ...
- Xplorer
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Re: Building an RM Axis Fuzz
http://www.flickr.com/photos/28160216@N ... 376517323/" onclick="window.open(this.href);return false;
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Re: Building an RM Axis Fuzz
Let me now how it works
- Xplorer
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Re: Building an RM Axis Fuzz
sure !
i think i'll tech a pcb for the first time ... rather than doing a point to point or copper breadboard stuff.
this technic looks fun and very fast :
http://www.instructables.com/id/Sponge- ... Will-Need/" onclick="window.open(this.href);return false;
i think i'll tech a pcb for the first time ... rather than doing a point to point or copper breadboard stuff.
this technic looks fun and very fast :
http://www.instructables.com/id/Sponge- ... Will-Need/" onclick="window.open(this.href);return false;
- Xplorer
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- Joined: Sun Apr 19, 2009 5:27 pm
- Just the numbers in order: 7
Re: Building an RM Axis Fuzz
damned !
i had the stabilo pen written nicely, ( uneraseable, resisting water, i guess it's ok, since i don't have a sharpie pen ) for a test, i tried this iron chlorure from banzaï and .... didn't work !
later i looked at the expiration date : may 2010 !! i thought i had bought it a year or two ago ???
Inside : some liquid, Brown, and some hard stuffs, liquid that became solid or something.
damned, have to wait monday or tuesday now to go buy some in a shop in paris.
nevermind, it's not the end of the world. And anyway, i'll have to buy some drilling sticks, for my kind of dremel, to dig the holes later, i broke the only one i had. And i'll look for some transfer paper, for laser printer, for some more complex pcb's. i hope i have a laser printer somewhere.
i know, i'm the one who thought that i could start a fuzz project and finish 2 or 3 hours later, ha ha ....
no .................
i had the stabilo pen written nicely, ( uneraseable, resisting water, i guess it's ok, since i don't have a sharpie pen ) for a test, i tried this iron chlorure from banzaï and .... didn't work !
later i looked at the expiration date : may 2010 !! i thought i had bought it a year or two ago ???
Inside : some liquid, Brown, and some hard stuffs, liquid that became solid or something.
damned, have to wait monday or tuesday now to go buy some in a shop in paris.
nevermind, it's not the end of the world. And anyway, i'll have to buy some drilling sticks, for my kind of dremel, to dig the holes later, i broke the only one i had. And i'll look for some transfer paper, for laser printer, for some more complex pcb's. i hope i have a laser printer somewhere.
i know, i'm the one who thought that i could start a fuzz project and finish 2 or 3 hours later, ha ha ....
no .................
- Lefty Lou
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Re: Building an RM Axis Fuzz
Try Shape Shifter hand wired pedals made in England. I bought his Catalinbread RAH clone pedal for less than half of what Catalinbread charges for the same pedal. Tim Thompson builds every kind of pedal imaginable with good construction and parts, frankly I don't see how he does it as cheap as he does.
https://www.facebook.com/pages/Shapeshi ... 17?sk=info" onclick="window.open(this.href);return false;
https://www.facebook.com/pages/Shapeshi ... 17?sk=info" onclick="window.open(this.href);return false;
- Xplorer
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Re: Building an RM Axis Fuzz
Thanks but no, i can't spend much, close to zero, and i already have the parts, looking in my stock.
+ i like to build stuffs myself , that's a pleasure to do it. But i'll check for his site.
+ i like to build stuffs myself , that's a pleasure to do it. But i'll check for his site.
- Lefty Lou
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Re: Building an RM Axis Fuzz
Good luck on your project anyways.Xplorer wrote:Thanks but no, i can't spend much, close to zero, and i already have the parts, looking in my stock.
+ i like to build stuffs myself , that's a pleasure to do it. But i'll check for his site.
- Xplorer
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Re: Building an RM Axis Fuzz
Thank man. Just bought some perchlorure, will try this afternoon.
- Xplorer
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Re: Building an RM Axis Fuzz
So, my first pcb etching ! on some NOS paxolin. i'm glad it worked perfectly.
Except that ..... lool, i forgot to reverse the traces letters "RM AXIS FUZZ" but nevermind.
Except that ..... lool, i forgot to reverse the traces letters "RM AXIS FUZZ" but nevermind.
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Last edited by Xplorer on Mon Jan 06, 2014 9:22 pm, edited 1 time in total.
- Xplorer
- Senior Member
- Posts: 2473
- Joined: Sun Apr 19, 2009 5:27 pm
- Just the numbers in order: 7
- Lefty Lou
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- Joined: Tue May 08, 2012 4:37 pm
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Re: Building an RM Axis Fuzz
It's coming along nicely buddy!
- mathd
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- Joined: Wed Jan 30, 2008 10:57 pm
Re: Building an RM Axis Fuzz
Looking good. Best sounding fuzz ever(to me)
Am going to make axis fuzz pcb(photoresist method) this month. Maby i will make some extra to sell on this forum if people show some interest.
Am going to make axis fuzz pcb(photoresist method) this month. Maby i will make some extra to sell on this forum if people show some interest.
Mathieu
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Re: Building an RM Axis Fuzz
thanks.
i tested it out of the enclosure, and it was Noisy, not sounding good too.
i still couldn't finish this build since it's a mess in my room, they're redoing all the bathroom and copper water connections.
i hope that it'll sound better when grounded properly.
or ... even if i used some Motorola transistors, with the right hfe, i may need to find some others.
eventualy, if you test a matched pair that work nicely for you, i'd be interested to get one.
also, i'm sure that once working properly, a good sounding axis fuzz dépends a lot of the amp and speakers used, hence some peoples disapointed, and some others totaly fan.
thanks.
i tested it out of the enclosure, and it was Noisy, not sounding good too.
i still couldn't finish this build since it's a mess in my room, they're redoing all the bathroom and copper water connections.
i hope that it'll sound better when grounded properly.
or ... even if i used some Motorola transistors, with the right hfe, i may need to find some others.
eventualy, if you test a matched pair that work nicely for you, i'd be interested to get one.
also, i'm sure that once working properly, a good sounding axis fuzz dépends a lot of the amp and speakers used, hence some peoples disapointed, and some others totaly fan.
thanks.
- mathd
- Senior Member
- Posts: 219
- Joined: Wed Jan 30, 2008 10:57 pm
Re: Building an RM Axis Fuzz
How much noisy?,
i made my first axis fuzz on a 1x1" breadboard with resistor upside and component stacked very close(i used 1/2watt resistor too, build from scratch), it was a very little noisy(inside the enclosure).
I think that pot lead and battery lead placement play a big role.
Try moving the wire around.
i made my first axis fuzz on a 1x1" breadboard with resistor upside and component stacked very close(i used 1/2watt resistor too, build from scratch), it was a very little noisy(inside the enclosure).
I think that pot lead and battery lead placement play a big role.
Try moving the wire around.
Last edited by mathd on Thu Feb 06, 2014 10:17 am, edited 1 time in total.
Mathieu