Chuck D. Bones
Circuit Wizard
If you look at the schematics for the Integral Preamp & Triangulum, it becomes pretty obvious that Fortin "borrowed" the TCE Integrated Preamp design, hardwired the tone controls and retuned them slightly. Begs the question: "Why build a Triangulum when you can build an Integral?" I'll leave that for the group to sort out.
There are 6 parts on the Integral that do absolutely nothing:
R2, R3, D1, D2, Q1, and C101. They have absolutely no effect on circuit operation. None, zilch, nada, bupkess. The 1st 5 parts are leftovers from an earlier generation of the TCE Integrated preamp. As wired in this design, the current in those 5 parts is always zero. C101 only does something if IC100 is use to make -9V. It isn't, so C101 is superfluous.
There are 12 parts on the Triangulum that do absolutely, or virtually nothing.
R9, R10, D1, D2 & Q2. Same as the Integral.
Then there's the tone shaping network with resistors in series and parts in parallel that don't do anything within the range of human hearing.
Replace R13 & R18 with jumpers. Use 2.7K for R12. If you're A-R and must hit the resistor value as close as possible, get a 2.87K. But you will not hear the difference.
Replace R16 with a jumper, use either 20K or 22K for R6. Makes no difference.
Replace R11 with a jumper, change R4 to 16.5K or 16.9K. Or 16K, makes no difference.
Replace C15 with a jumper, remove R2 & R15. This network takes effect above 20KHz. Way beyond the hearing range of anyone who has spent time standing in front of a 4 x 12 cabinet.
No need to mod a pedal that is already built, but something to think about if you plan on building one.
There are 6 parts on the Integral that do absolutely nothing:
R2, R3, D1, D2, Q1, and C101. They have absolutely no effect on circuit operation. None, zilch, nada, bupkess. The 1st 5 parts are leftovers from an earlier generation of the TCE Integrated preamp. As wired in this design, the current in those 5 parts is always zero. C101 only does something if IC100 is use to make -9V. It isn't, so C101 is superfluous.
There are 12 parts on the Triangulum that do absolutely, or virtually nothing.
R9, R10, D1, D2 & Q2. Same as the Integral.
Then there's the tone shaping network with resistors in series and parts in parallel that don't do anything within the range of human hearing.
Replace R13 & R18 with jumpers. Use 2.7K for R12. If you're A-R and must hit the resistor value as close as possible, get a 2.87K. But you will not hear the difference.
Replace R16 with a jumper, use either 20K or 22K for R6. Makes no difference.
Replace R11 with a jumper, change R4 to 16.5K or 16.9K. Or 16K, makes no difference.
Replace C15 with a jumper, remove R2 & R15. This network takes effect above 20KHz. Way beyond the hearing range of anyone who has spent time standing in front of a 4 x 12 cabinet.
No need to mod a pedal that is already built, but something to think about if you plan on building one.
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