Astrotone - Fuzz [schematic]
- Seiche
- Old Solderhand
mictester
yeah I was thinking 2n2222 (the metal cans) or 2n2369.
what do you reckon could be the magical gold lead silicon transistor from the 60s mike p. is using?
yeah I was thinking 2n2222 (the metal cans) or 2n2369.
what do you reckon could be the magical gold lead silicon transistor from the 60s mike p. is using?
- okgb
- Diode Debunker
I made a ptp version with the sam ash schematic , sounds a little thin to me
[ back to back .047s to isolate the diodes ? ] I'll increase the input cap to the larger
analogeman value , any other tips ? tia regards Greg
[ back to back .047s to isolate the diodes ? ] I'll increase the input cap to the larger
analogeman value , any other tips ? tia regards Greg
- Seiche
- Old Solderhand
it's actually the input and output caps that are both 0.47uF instead of 0.047uF.okgb wrote:I made a ptp version with the sam ash schematic , sounds a little thin to me
[ back to back .047s to isolate the diodes ? ] I'll increase the input cap to the larger
analogeman value , any other tips ? tia regards Greg
analogman stated on his site, the original sounds thin and he made it fatter.
- LucifersTrip
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most likely correct, since I believe this is confirmed:Seiche wrote:Would this be the correct schem? can anyone confirm?
1.2M > 1M
470 > 1.8K
- Seiche
- Old Solderhand
yeah i changed the schem on the beginning of this thread according to the changes that analogguru proposed, i assumed they are right, since he is usually right
- okgb
- Diode Debunker
changing the i/o caps helped allot , I'm assuming the other analogman changes were for the transistors ,
but how about the resister to the tone control ? seems to start cutting bass halfway mostly useless
but how about the resister to the tone control ? seems to start cutting bass halfway mostly useless
- Seiche
- Old Solderhand
well, according to analogman the tone control makes it possible to get the sound of the original astrotone. as you described as thin, I assume that's what it's supposed to dookgb wrote:changing the i/o caps helped allot , I'm assuming the other analogman changes were for the transistors ,
but how about the resister to the tone control ? seems to start cutting bass halfway mostly useless
- okgb
- Diode Debunker
Sorry , I should have been more clear , the two cap changes made it usable for me . I didn't do any of the resister changes
the tone control may have become more subtle [ or maybe it's the same and I'm imagining it ] funny for a shunt type
control that it feels like it cuts bass , i'm not up on the theroy but can anyone say what affect changing the resister before
the tone control will have ?
I remember a few people changing the tone control , I'll look into that but, thanks for the help , the fuzz is allot of fun
the tone control may have become more subtle [ or maybe it's the same and I'm imagining it ] funny for a shunt type
control that it feels like it cuts bass , i'm not up on the theroy but can anyone say what affect changing the resister before
the tone control will have ?
I remember a few people changing the tone control , I'll look into that but, thanks for the help , the fuzz is allot of fun
- Seiche
- Old Solderhand
hey okgb,
Saw your post on the Diaz Texas Ranger thread, about how you enjoyed this box.
have you had the chance to try to change the resistors yet? would be great to know if it gets more usable that way.
I haven't found an application yet for my rangemaster clone either
cheers
Saw your post on the Diaz Texas Ranger thread, about how you enjoyed this box.
have you had the chance to try to change the resistors yet? would be great to know if it gets more usable that way.
I haven't found an application yet for my rangemaster clone either
cheers
- okgb
- Diode Debunker
I twisted the leads of the parts together and soldered that , to replace caps i clipped out
the old ones [ ruining them ] but was hoping someone could tell how the resister changes may affect the sound
before i bothered [ if some are only to bias the transistors he used ? ]
I built the Viper version of the rangemaster Si , and it's not bad but the triboost , byoc kit that i bought already stuffed
sort of distorts on all 3 modes when you hit the strings a little hard , so i haven't been able to really experience or enjoy
the fabled Ge boost
the old ones [ ruining them ] but was hoping someone could tell how the resister changes may affect the sound
before i bothered [ if some are only to bias the transistors he used ? ]
I built the Viper version of the rangemaster Si , and it's not bad but the triboost , byoc kit that i bought already stuffed
sort of distorts on all 3 modes when you hit the strings a little hard , so i haven't been able to really experience or enjoy
the fabled Ge boost
- mictester
- Old Solderhand
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I've got a bag of "ME1120" transistors - gold-plated leads, little domed jobs with a µr logo on them. They're from the late 60s and have hfe figures between 50 and 100. They're superb in circuits like this!Seiche wrote:mictester
yeah I was thinking 2n2222 (the metal cans) or 2n2369.
what do you reckon could be the magical gold lead silicon transistor from the 60s mike p. is using?
"Why is it humming?" "Because it doesn't know the words!"
- Seiche
- Old Solderhand
the 1M2 should not do much, maybe bias the transistor slightly different, or account for different HFe values (maybe higher Hfe transistors?).
the 470 on the tone control, however, should definitely change the sweep of the tone pot, maybe make it more useful. The bass cut happens because the tone control + R6 forms a high pass filter that changes by turning the tone control. A high pass filter lets high frequencies pass and attenuates bass frequencies.
cut-off frequency is:
the 470 on the tone control, however, should definitely change the sweep of the tone pot, maybe make it more useful. The bass cut happens because the tone control + R6 forms a high pass filter that changes by turning the tone control. A high pass filter lets high frequencies pass and attenuates bass frequencies.
cut-off frequency is:
- Seiche
- Old Solderhand
Did a quick little vero for the (alleged) Analogman version of the Astrotone Fuzz.
This version should fit in a 1590A enclosure and has no standup resistors.
Maybe a second (or third) set of eyes should look over it, though, before building it.
edit: updated version below
This version should fit in a 1590A enclosure and has no standup resistors.
Maybe a second (or third) set of eyes should look over it, though, before building it.
edit: updated version below
- IvIark
- Tube Twister
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ImportantSeiche wrote:no standup resistors.
"If anyone is a 'genius' for putting jacks in such a pedal in the only spot where they could physically fit, then I assume I too am a genius for correctly inserting my legs into my pants this morning." - candletears7 - TGP
- Nocentelli
- Tube Twister
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i'd rather have standy resistors than diagonals...
(though you could move the tone1 connection down two rows, make another cut at column C/row D, and move that resistor so it's vertical).
(though you could move the tone1 connection down two rows, make another cut at column C/row D, and move that resistor so it's vertical).
modman wrote: ↑ Let's hope it's not a hit, because soldering up the same pedal everyday, is a sad life. It's that same ole devilish double bind again...
- Seiche
- Old Solderhand
- Nocentelli
- Tube Twister
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Cool. I've just plugged this into the breadboard with 2N2222s and will try it out when i'm allowed. One question, how did you update/edit the attached picture? I've looked in the "manage attachments" section of the user CP, but can only delete previously posted schems: Or is this some kind of moderator magic?
modman wrote: ↑ Let's hope it's not a hit, because soldering up the same pedal everyday, is a sad life. It's that same ole devilish double bind again...
- Seiche
- Old Solderhand
yes. Mods can delete and edit everyone's posts. To be fair, though, I merely deleted it from the first post and reposted in a new post, that you should be able to do as well with the attachment feature you described.Nocentelli wrote:Or is this some kind of moderator magic?
I could've switched it out in the original post, though.
What do you mean by "when you're allowed"? Neighbours? Because I sure as hell ain't gonna stop you!
- Nocentelli
- Tube Twister
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reading on a blackberry... thought you'd edited the original postSeiche wrote:I merely deleted it from the first post and reposted in a new post, that you should be able to do as well with the attachment feature you described.
I could've switched it out in the original post, though.
kids and mrs nocentelli in bed. I tried it through headphones just now, though, and it sounds pretty cool! only very quiet strumming, since i play a semi acoustic and 'er indoors is convinced even that will wake the kids up...Seiche wrote:What do you mean by "when you're allowed"? Neighbours? Because I sure as hell ain't gonna stop you!
modman wrote: ↑ Let's hope it's not a hit, because soldering up the same pedal everyday, is a sad life. It's that same ole devilish double bind again...