DEMO DogTron OctoBlaster

This post contains an audio or video demo

DGWVI

Well-known member
Build Rating
5.00 star(s)
Another commission, this time from a bassist wanting something filthy, funky, and classic

(And, I used an actual bass for this demo. Though, I did screw up and recorded with my Twin sim instead of the SVT I setup specifically for this demo 😅)

The Ocelot board is the most tweaked, as the goal was to get it closer to the Ampeg Sub Blaster, with the octave tone control from the Aguilar Octamizer -
  • R6 is 10k
  • C3 is 1u
  • D1 omitted
  • R12 is 470k
  • C5 is 100n
  • C6 is 47n
  • C7 is 10n
  • R13 & 14 is100k dual gang w/ 10k resistors
  • R15 is 22k
  • C8-11 omitted
  • R16-25 omitted
  • R29 is 1u
  • R30 is 4.7k
  • C12 is omitted
  • C13 is jumpered
  • 220k added between pins 6&7 of IC3
  • R32 and 33 are 3.3k
  • C14 is omitted
  • Jumper placed between pin 5 of IC3 and vref
  • C15 is 3.3n
  • C16 is 100n
  • R34 is 6.8k
  • R39 & 40 are 47k
  • CD4027 omitted
  • Stupidly Wonderful Tone Control wired backward as a filter on the dry signal
  • 3PDT boost board used to make up for lack of gain recovery
The Mu-Tron (Aion Lumitron) is mostly stock, with the only mods being slightly increased filter caps (C5/8 - 1.5n, C4/7 - 2.7n, C6/9 - 2.2n) and having the envelope input coming directly from a buffered dry signal, courtesy of the FuzzDog Spluffer. The signal input is fed directly at R4 from an order switch placed between this and the fuzz

The Brown Dog (MadBean Gas Tank) is stock

The two leftover outputs of the Spluffer are wired as dry outs

1000037185.jpg


While the Ampeg Sub Blaster (schematic found on FSB) shares most of its circuit topology with the OC-2, it doesn't sound nearly as synthetic. Almost natural, actually - quite a bit clearer, and doesn't seem as prone to octave jumping
 
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