Astrotone - Fuzz [schematic]
Greetings to you all;
Haven't seen this one around, also, there's not much information on the web. A friend got one used in really good shape, despite being such an old unit.
Anyway, my friend let me take a look inside, I traced it and made a layout, nobody has verified none of them, but I'm pretty sure both are allright.
I guess it's a silicon based fuzz, because I don't know the transistors and don't know the clipping diodes neither. The tone control is really weird.
It's a nice sounding effect, It might be a little brittle and thin on some amps; A strat plugged into it and then into a Blues Jr. amp sounded pretty good to me, nice subtle fuzz, gives a nice crunch when playing rythm.
Regarding the layout Transfer, I couldn't scale it properly, if I reduced its size, then the image would distort, so, sorry for that inconvenience.
Hope you like it.
Haven't seen this one around, also, there's not much information on the web. A friend got one used in really good shape, despite being such an old unit.
Anyway, my friend let me take a look inside, I traced it and made a layout, nobody has verified none of them, but I'm pretty sure both are allright.
I guess it's a silicon based fuzz, because I don't know the transistors and don't know the clipping diodes neither. The tone control is really weird.
It's a nice sounding effect, It might be a little brittle and thin on some amps; A strat plugged into it and then into a Blues Jr. amp sounded pretty good to me, nice subtle fuzz, gives a nice crunch when playing rythm.
Regarding the layout Transfer, I couldn't scale it properly, if I reduced its size, then the image would distort, so, sorry for that inconvenience.
Hope you like it.
- Attachments
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- AstrotoneLyt.jpg (45.87 KiB) Viewed 8981 times
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- AstrotoneTrns.jpg (24.73 KiB) Viewed 8961 times
Here are the unit's photographs
- Attachments
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- DSC02600.jpg (83.13 KiB) Viewed 8959 times
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- DSC02608.jpg (70.79 KiB) Viewed 8964 times
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- DSC02616.jpg (70.75 KiB) Viewed 8949 times
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- DSC02617.jpg (76.05 KiB) Viewed 8943 times
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- DSC02623.jpg (98.71 KiB) Viewed 8956 times
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Thanks to you Modman, for such a great forum.modman wrote:Wow, nice job!
Thanks for contributing!
modman
The Freestompboxes Forum search function is soo great, use the search function..., the S E A R C H function.
- MoreCowbell
- Transistor Tuner
Information
Thanks !Fuzzer wrote:Greetings to you all;
Haven't seen this one around, also, there's not much information on the web. A friend got one used in really good shape, despite being such an old unit.
Anyway, my friend let me take a look inside, I traced it and made a layout, nobody has verified none of them, but I'm pretty sure both are allright.
I guess it's a silicon based fuzz, because I don't know the transistors and don't know the clipping diodes neither. The tone control is really weird.
It's a nice sounding effect, It might be a little brittle and thin on some amps; A strat plugged into it and then into a Blues Jr. amp sounded pretty good to me, nice subtle fuzz, gives a nice crunch when playing rythm.
Regarding the layout Transfer, I couldn't scale it properly, if I reduced its size, then the image would distort, so, sorry for that inconvenience.
Hope you like it.
Notice any similarities ?
Oh, shit,
Well, at least my schem has colors on it.
But, honestly, this seemed such a unique creature I thought it hadn't even been copied.
Morecowbell, I got my hands on an old (really old) Electro harmonix Fuzz-wah, and I also haven't found anything on it, is it worth tracing?, I don't know, maybe you or someone else around here already has it or a similar one. Thanks in advance.
Well, at least my schem has colors on it.
But, honestly, this seemed such a unique creature I thought it hadn't even been copied.
Morecowbell, I got my hands on an old (really old) Electro harmonix Fuzz-wah, and I also haven't found anything on it, is it worth tracing?, I don't know, maybe you or someone else around here already has it or a similar one. Thanks in advance.
The Freestompboxes Forum search function is soo great, use the search function..., the S E A R C H function.
- MoreCowbell
- Transistor Tuner
Information
We've all been there ! Still, it's important to have "confirmation" to the "rumour" that the two were the same pedals.Fuzzer wrote:Oh, shit,
Well, at least my schem has colors on it.
But, honestly, this seemed such a unique creature I thought it hadn't even been copied.
Of course you KNOW I'm going to say "yeah it's worth it"...But...you may want to post a few pictures and see if AG, Dirk, JHS or one of the other guys has already reversed it.Morecowbell, I got my hands on an old (really old) Electro harmonix Fuzz-wah, and I also haven't found anything on it, is it worth tracing?, I don't know, maybe you or someone else around here already has it or a similar one. Thanks in advance.
Unless of course it;'s this one...
Yes man, thank you very much, is pretty much the same, the wah part is identical.
There are some differences in the fuzz circuit though, according to my drawing, (I'll post the gutshots later anyway, it's always nice to see effects innards ), the input cap is .047u, and in the second feedback loop, the clipping diodes are shunted with a 470k resistor and a 0.1[nF] cap, maybe to tame the highs a little, I guess. Also, some of the 680k resistors are 1M in the one I had.
By the way, have you heard it in action?, the wah sounds great to me, really raw and angry, I like that, and the reverse mode is pretty interesting. It's a uncomfortable pedal though, you'll see when I post the pics in other thread.
Thanks again.
There are some differences in the fuzz circuit though, according to my drawing, (I'll post the gutshots later anyway, it's always nice to see effects innards ), the input cap is .047u, and in the second feedback loop, the clipping diodes are shunted with a 470k resistor and a 0.1[nF] cap, maybe to tame the highs a little, I guess. Also, some of the 680k resistors are 1M in the one I had.
By the way, have you heard it in action?, the wah sounds great to me, really raw and angry, I like that, and the reverse mode is pretty interesting. It's a uncomfortable pedal though, you'll see when I post the pics in other thread.
Thanks again.
The Freestompboxes Forum search function is soo great, use the search function..., the S E A R C H function.
- MoreCowbell
- Transistor Tuner
Information
The 470k that parallels the clipping diodes in the feedback loop is there to help keep the fuzz from "gating".Fuzzer wrote:Yes man, thank you very much, is pretty much the same, the wah part is identical.
There are some differences in the fuzz circuit though, according to my drawing, (I'll post the gutshots later anyway, it's always nice to see effects innards ), the input cap is .047u, and in the second feedback loop, the clipping diodes are shunted with a 470k resistor and a 0.1[nF] cap, maybe to tame the highs a little, I guess. Also, some of the 680k resistors are 1M in the one I had.
By the way, have you heard it in action?, the wah sounds great to me, really raw and angry, I like that, and the reverse mode is pretty interesting. It's a uncomfortable pedal though, you'll see when I post the pics in other thread.
Thanks again.
Value changes were VERY common for EH in those days
I'd LOVE to see pictures...though you should probably post them in a new thread.
Thanks man...sounds like you have some cool toys !
Well, guess what, my friend was going to sell it to whom you call 'the king of solder Jockeys', and as far as I know, finally he didn't. Instead he soldt it in some kind of vintage gear shop, got $350 for it. Blatant Rip-off.
When I think of it as a guitar aficionado, it's a good deal, but, having second thoughts, he could've sold it for much, much more, taking in account that in the U.S. there are those vintage freaks who will pay anything just beacuse its old, and it looks good.
By the way teleman, do you have the book? Maybe you could scan that part, thanks in advance, and anyway, thanks for the info. Man, I should've taken a picture of me with that fuckin' box, smilin' big. . Maybe that would turn me into some kind of demigod among vintage geeks.
When I think of it as a guitar aficionado, it's a good deal, but, having second thoughts, he could've sold it for much, much more, taking in account that in the U.S. there are those vintage freaks who will pay anything just beacuse its old, and it looks good.
By the way teleman, do you have the book? Maybe you could scan that part, thanks in advance, and anyway, thanks for the info. Man, I should've taken a picture of me with that fuckin' box, smilin' big. . Maybe that would turn me into some kind of demigod among vintage geeks.
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- bajaman
- Old Solderhand
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Hello Fuzzer
Great to see a noobie posting - great work with the artwork and schematics etc. Thanks for being part of our sharing community and welcome to Freestompboxes.org - the best DIY resource site on the planet.
Cheers
bajaman
Great to see a noobie posting - great work with the artwork and schematics etc. Thanks for being part of our sharing community and welcome to Freestompboxes.org - the best DIY resource site on the planet.
Cheers
bajaman
be kind to all animals - especially human beings
- seniorLoco
- Resistor Ronker
that 100k at the clipping diode section is a actually a 100pf cap.... i just wrote the actual marking found on the cap
Cheers fellas
"Curiosity may have killed the cat, but it saved the mice, who ate the cheese."
- RnFR
- Old Solderhand
Information
extremely hi res pics of the Sam Ash fuzz box here-
https://cgi.ebay.com/ws/eBayISAPI.dll?V ... 0309076752
so clear you can smell it!
https://cgi.ebay.com/ws/eBayISAPI.dll?V ... 0309076752
so clear you can smell it!
"You've converted me to Cubic thinking. Where do I sign up for the newsletter? I need to learn more about how I can break free from ONEism Death Math." - Soulsonic
Blog-APOCALYPSE AUDIO
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- RnFR
- Old Solderhand
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oh, shit. i didn't even look at the price!
"You've converted me to Cubic thinking. Where do I sign up for the newsletter? I need to learn more about how I can break free from ONEism Death Math." - Soulsonic
Blog-APOCALYPSE AUDIO
Blog-APOCALYPSE AUDIO
- analogguru
- Old Solderhand
Information
Oh, they price is already reduced, was on Oct 05, 2008 at $ 3.400,--
analogguru
analogguru
There´s a sucker born every minute - and too many of them end up in the bootweak pedal biz.
Man, if my friend, (the one that lent me the astrotone for tracing) sees this, and sees it get sold at this price, he's gonna kick his own balls, repeatedly. As far as I know, he sold it for 350 dollars... I wouldn't pay more than 200 for it, anyway, it had a cool sound, but nothing excellent.
I had written the price earlier in the thread.
I had written the price earlier in the thread.
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- theehman
- Diode Debunker
Information
ibodog2 wrote:Guess who's selling a clone of this one now... AstroTone fuzzFuzzer wrote:Well, guess what, my friend was going to sell it to whom you call 'the king of solder Jockeys', and as far as I know, finally he didn't. Instead he soldt it in some kind of vintage gear shop, got $350 for it. Blatant Rip-off.
I've been selling them for years: http://www.ronsound.com/index.php?main_ ... b32e5b7193
Ron Neely II
Electro-Harmonix info: http://electroharmonix.vintageusaguitars.com
Home of RonSound effects: http://www.ronsound.com
fx schematics and repairs
Electro-Harmonix info: http://electroharmonix.vintageusaguitars.com
Home of RonSound effects: http://www.ronsound.com
fx schematics and repairs