aion BETA PREAMP Manual Download Page 1

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BETA PREAMP

PROJECT NAME

BETA PREAMP

BASED ON

EFFECT TYPE

PROJECT SUMMARY

DOCUMENT VERSION

Sunn

Beta Lead / Bass

A single-channel pedal recreation of the Sunn® Beta Lead and Beta Bass amplifiers, unique in using
overdriven CMOS stages for their drive tone.

Preamp & high-gain drive

1.0.1 (2022-06-06)

BUILD DIFFICULTY

Advanced

Actual size is 3.44” x 2.42” (main board) and 1.77” x 0.87” (bypass board).

Summary of Contents for BETA PREAMP

Page 1: ...Sunn Beta Lead Bass A single channel pedal recreation of the Sunn Beta Lead and Beta Bass amplifiers unique in using overdriven CMOS stages for their drive tone Preamp high gain drive 1 0 1 2022 06 06...

Page 2: ...e original amplifier It can be built in either Bass or Lead configurations by swapping out a few components While it can be used as a drive pedal it works best as a true preamp driving a power amp dir...

Page 3: ...k Metal film resistor 1 4W R11 68k Metal film resistor 1 4W R12 22k Metal film resistor 1 4W R13 68k Metal film resistor 1 4W R14 10k Metal film resistor 1 4W R15 100k Metal film resistor 1 4W R16 100...

Page 4: ...C capacitor NP0 C0G C9 2 2uF Film capacitor 7 2 x 5mm C10 2 2uF Film capacitor 7 2 x 5mm C11 10uF Electrolytic capacitor 5mm C12 33pF MLCC capacitor NP0 C0G C13 2 2uF Film capacitor 7 2 x 5mm C14 22n...

Page 5: ...use 1N4001 IC1 RC4558P Operational amplifier DIP8 IC1 S DIP 8 socket IC socket DIP 8 IC2 CD4069UBE CMOS hex inverter 6 circuit DIP14 IC2 S DIP14 socket IC socket DIP 14 IC3 RC4558P Operational amplifi...

Page 6: ...2 1mm DC jack 2 1mm panel mount Mouser 163 4302 E or equivalent IN 1 4 mono 1 4 phone jack closed frame Switchcraft 111X or equivalent OUT 1 4 mono 1 4 phone jack closed frame Switchcraft 111X or equ...

Page 7: ...s which is a trick mentioned in the owner s manual of the original amplifier that is accomplished by patching the preamp output of A into the input of B Enclosure size This project was designed for th...

Page 8: ...0n GND 12k GND 22k 100k GND 4k7 91k 10n VA VA 100n 100n GND 100n 100n GND 12k 8k2 12k 10n GND GND GND 4n7 GND 3k3 GND 27n VA 100n 100n GND GND VA 220k 1N458A 1N458A VA VA 150R 2u2 10uF 10uF 220uF GND...

Page 9: ...s by measuring the scale on the printed page LED hole drill size assumes the use of a 5mm LED bezel available from several parts suppliers Adjust size accordingly if using something different such as...

Page 10: ...BETA PREAMP 10 ENCLOSURE LAYOUT Enclosure is shown without jacks See next page for jack layout and wiring 1590BBS...

Page 11: ...BETA PREAMP 11 WIRING DIAGRAM IN V GND PGND NC OUT PCB IN GND V V JACK GND JACK OUT IN GND GND PCB OUT...

Page 12: ...of others Projects may be used for commercial endeavors in any quantity unless specifically noted No attribution is necessary though a link back is always greatly appreciated The only usage restricti...