BassAce

Midi Bass Synthesizer

Courtesy/Thanks to: EFM

Description: The BassAce is a small midi-synth based loosely on the TB303. It can be built many different ways. Depending on how it's configured it can be anything from a simple 303 type box to a full scale mono-synth. The 1/2 FracRac((TM) PAiA) shown here is in the maximum configuration without adding more pc boards. I have included a version of this layout for use with a Hammond case at the end of tis document. Add a VCO4 board, a Dual EG and a small mixer and you've got a full 2-VCO synth.

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Files

bassace_docv2.pdf
	Schematics, parts list, PCB, assembly plan, and notes for the BassAce.

Manufacturers

EFM
	Electronic for music

Parts used

LM 3046
	Transistor Array
6N138
	LOW INPUT CURRENT HIGH GAIN SPLIT DARLINGTON OPTOCOUPLERS
LM7805
	5V Positive Voltage Regulator
1N4001
	General Purpose Rectifiers
CD4066
	Quad Bilateral Switch
LM7812
	3-Terminal 1A Positive Voltage Regulator
CD4013
	Dual D Flip-Flop
1N4148
	High speed Switching Diode
2N3906
	PNP switching transistor
2N3904
	NPN switching transistor
TL074
	Low-Noise JFet-input Operational Amplifier
LM13600
	Dual Operational Transconductance Amplifiers with Linearizing Diodes and Buffers

TB 303
	Bassline Computer Controlled