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11-13-2008, 02:00 PM
| | Registered User | | Join Date: Jun 2008 Location: Fredericksburg, Virginia | | | Beavis Audio Trotsky Drive
Looking around on his website, I stumbled across this: Trotsky Drive.
It looks like it would make a nice "Dirty Boost" ( Gandhirrea's post got me thinking about it) Not sure about bass response, but input and output cap values adjusts could fix this, I'm guessing. Not that I need a dirty boost particularly badly, but I'm curious. And the treble switch would need to go.
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I have no idea.
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11-13-2008, 02:13 PM
|  | TalkBass: Usurping My Practice Time Since 2002 Moderator | | Join Date: May 2002 Location: Connecticut | | Gotta love the controls description.
"Volume Knob: Louder or not louder."  |
12-23-2008, 08:03 PM
|  | Registered User | | | | | so anyone have one? |
12-24-2008, 08:16 AM
| | Registered User | | Join Date: May 2003 Location: Leeds, UK | | | $uperpuma is making them.
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When the seagulls follow the trawler, it is because they think sardines will be thrown into the sea. |
12-24-2008, 10:26 AM
| | | | I have two of Pumas (#001 and #007) I have to say, it is not only one of the best LOOKING pedals (acid etched enclosure) But it also sounds FANTASTIC!!! I would recommend one of Superpumas because he makes sure the transistor in it is perrrrrrrfect. And yes, it sounds great on a bass!!! |
01-04-2009, 01:08 PM
| | | | Anything new on this? |
01-04-2009, 01:46 PM
| | Registered User | | Join Date: May 2008 Location: Vista, CA | | | Wow, very simple circuit for that. I'll have to build one up on my breadboard and see how it does with bass. |
04-02-2009, 10:22 AM
| | Registered User | | Join Date: May 2008 Location: Far north of island in the sun | | | bump!
anybody else tried this on bass?
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MM Sterling #33
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04-02-2009, 10:30 AM
| | Registered User | | Join Date: Oct 2005 Location: Bowling Green, KY | | | I'd like to get one headed my way soon.
__________________ Quote:
Originally Posted by nad  My biggest pedal is on my tiny board though, mostly because I enjoy the overwhelming dichotomy that is life. | I play rock music.
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04-02-2009, 11:38 AM
| | Registered User | | | | | I want to get the atari punk console! |
07-29-2009, 03:09 PM
| | Registered User | | Join Date: Dec 2002 Location: UK | | | Bumping this...anyone else had any experience of it?
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I dig the cosmos
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07-29-2009, 03:27 PM
| | | Ill take a Fuzzlab, Armageddon Processor, Precision Ass Tornado, Subcommander, and a Stutter pedal.
My first reaction to the Trotsky link above:
AWWWWW, THERE SO CUTE!!!!! (said in the most annoying voice humanly possible.)
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Official Moogist In Residence for Talkbass. Line6 M9 #18
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07-29-2009, 10:25 PM
|  | Registered User | | Join Date: Sep 2006 Location: NY | | | may buy it. |
07-30-2009, 06:02 AM
| | | Quote:
Originally Posted by Thunderscreech Looking around on his website, I stumbled across this: Trotsky Drive.
It looks like it would make a nice "Dirty Boost" ( Gandhirrea's post got me thinking about it) Not sure about bass response, but input and output cap values adjusts could fix this, I'm guessing. Not that I need a dirty boost particularly badly, but I'm curious. And the treble switch would need to go. | The switch is actually a treble cut switch so if you leave the treble switch out that will put it on "more treble". You could hardwire it to less treble if you want to or you could mod it to cut more treble by putting a bigger value cap instead of the 22nf.
You could also hardwire the 22nf to ground and then put another bigger cap to ground with the switch in front of it for a dark mode. (note: a bigger cap will not cut more treble but will put the cutoff further back so it will also cut some mids and a bit more treble)
edit: Also C1 and C2 are the only bottlenecks for lowend (I think) so increasing those will probably be a good idea (start with increasing C1 to 100nf like C2 and if that's not enough increase both to something higher).
Last edited by Bootzilla : 07-30-2009 at 06:08 AM.
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07-30-2009, 06:08 AM
| | Registered User | | Join Date: Dec 2008 Location: Wakefield, UK | | | Or you could you put a rotary switch to switch the capacitors. Or if you can find something suitable, you could use a variable capacitor. They aren't very common in audio applications but you could wire a linear potentiometer across a higher value cap (e.g. 100nF/220nF) so you could vary bass tolerance etc...
Edit: the input cap is definitely too low to get a reasonable bass response. So, I would change C1 and probably even C2 to 220nF.
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Originally Posted by kevteop For all we know, there could be an army of beautiful virgins wandering door-to-door with photos of me, in a desperate attempt to mate me to death. |
Last edited by gnasher1993 : 07-30-2009 at 06:11 AM.
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07-30-2009, 07:25 AM
| | Registered User | | Join Date: May 2008 Location: Vista, CA | | | Yeah, I'd go with at least 0.1uF for each to start out and then play around with that filtering cap to ground. You could also add another diode in series with each one and get a softer clipping. |
07-30-2009, 09:03 AM
| | Registered User | | Join Date: Dec 2008 Location: Wakefield, UK | | | It would be pretty could to have selectable clipping. So a rotary switch wired up to say 4 pairs of clipping diodes. That would be awesome...
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Originally Posted by kevteop For all we know, there could be an army of beautiful virgins wandering door-to-door with photos of me, in a desperate attempt to mate me to death. | |
07-30-2009, 11:38 AM
| | Registered User | | Join Date: May 2008 Location: Vista, CA | | Quote:
Originally Posted by gnasher1993 It would be pretty could to have selectable clipping. So a rotary switch wired up to say 4 pairs of clipping diodes. That would be awesome... | Just a regular throw switch would work for that. |
07-30-2009, 11:50 AM
| | Registered User | | Join Date: Dec 2008 Location: Wakefield, UK | | Quote:
Originally Posted by rcubed Just a regular throw switch would work for that. | I've got some sort of thing for rotary knobs  . I don't know why, it just seems so cool.
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Originally Posted by kevteop For all we know, there could be an army of beautiful virgins wandering door-to-door with photos of me, in a desperate attempt to mate me to death. | |
04-28-2011, 09:57 AM
| | Registered User | | Join Date: Feb 2011 Location: Vienna, AUT | | I know this thread is long dead, but anyway:
I just built a Trotsky Drive using a 2N3904 as transistor and 2 1N34A germanium diodes for clipping.
Results: sucks with a passive bass, there really isn't much output volume. 
With an active Ibby though the sound is nice and pretty dirty although there isn't much low end left.
Conclusion: I like it.  I wouldn't want it as an always-on but I'm sure I can find a purpose.  | | Thread Tools | Search this Thread | | | | 
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