satisfactory bullitt tremolo build

Started by donald stringer, October 30, 2006, 08:13:50 PM

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donald stringer

This is a project that I have been working on for quite some time. The audio portion worked fine but had some trouble with the oscilator . I put the lfo on a back burner and substituted the lfo from the tremulus lune[tonepads version] ...connected it to the three 1 meg resistors on the bullitt schem. and it works fine. If you want to build it use just the top part of the schem. The controls associated give you plenty of control. all the other mods for the trem lune apply to this as well. Before I commit it to a board I am going to try the ramp mod etc. The only problem I encountered was the lfo heartbeat. I put an .1 polyester from the output of the lfo to ground and that took care of it for the most part.  I "m  replacing the tone stack with that 5 band eq on a chip available from smallbear. The case is built and  holes are drilled. I really dont have a problem with low voltage tube pedals. this one sounds great. Pictures forthcoming.      Yes it works on 12 volts
troublerat

donald stringer

Correction , I posted above that the heartbeat or the lfo throb so recognizable in the debugging process in these lfo was corrected by an .1 poly cap on the output. The correction is an .1 poly cap on pin three of the TOP portion of the tonepad tremulus lune schem to ground. No other changes were made.
troublerat

RLBJR65

Richard Boop

The Tone God

The LFO I used in the Bullitt is based on the same type found in most tube amps since the goal was an all tube low voltage pedal version of tube amp tremolo. Replacing the LFO with one like the tremulus lune brings modern-ness to the effect with the "cool" factor of all tube audio while still being low voltage. Great stuff!!!

I love DIY. :)

Andrew

donald stringer

This is going to be my tone control RohmBA3812l   I have spots already drilled for the pots. I am putting it in the same place as the previous tone control. The case is an polished alum. tabletop rack type that I built in our shop and is the same size as the one in my  photobucket account. I am building a set of table top cases [same size] that will stack. The thought of having my own rack system had a nice appeal to it but I wanted some qaulity components.  So I remounted the tubes and put in a wiring bus so I could interconnect whatever I wanted until I achieved the sound I wanted. I liked the loud clean sound of this circuit. It actully has a little bit of breakup to it. Getting the lfo working was a big step forward. Any comments thoughts suggestions. I have a third one started using this http://sound.westhost.com/project28.htm as guide line. I "m planning on a switching box and maybe one more.
troublerat

donald stringer

Bullit update I have committed the lfo to board, mounted it in the enclosure [even got the blinking led] With the mods. So far I love it and the build continues. I am planning on taking that lfo and committng it to its own enclosure be it an stompbox, module or whatever but I want to include an control voltage input to it . How would I go about doing that. This one will be a 9 volt circuit.
troublerat

The Tone God

Quote from: donald stringer on November 05, 2006, 09:06:01 AM
...I want to include an control voltage input to it . How would I go about doing that.

What parameter is the voltage to control ?

Andrew

donald stringer

I didnt think of that. It can only control one para at a time. I suppose for know lets say the speed. If I can get past that it wouldnt be to much of a jump to figure out how to make it control some thing else.
troublerat