ide@vect: 2015

Revision 1 of angry duck,

Mods :

1. 1st. stage replaced with cmos opamp, operated in linear mode, flexible gain control.

2. 2nd. stage clone of Ghost Dance, combined with cmos buffer, my basic idea is to get quacky lead.

3. 3rd. stage linear cmos opamp with fixed gain

4. 4th. stage is a tone control adapted from Marshall shredmaster, changed on clipping diode to 1N34A, all Vbias removed and connected to GND.
5. 5th. stage is a contour control
6. 6th. stage is an anti sucking device

Bias on 1st. stage can be ommited, because seem not too effeective and hard to control on overload condition. maybe need to add resistors to GND and 9VDC power line.

All pots body have to connected to GND, to remove unwanted noises.

enjoy :)

note : fair and personal use only

Angry Duck, still inside my mind

This time, I am combining cmos overdrive, First stage is normal preamp buffer but using RAT negative loop, 2 stages in the 2nd section are selectable, 2.3KHz crunch overdrive or CMOS overdrive. After the 1st 3PDT switch, there is another 3PDT switch to feed signal to Ghost Dance Overdrive. Every stage ends, I put 100K trimpot, just in case of voltage overload.

On the last stage, I put contour control before preamp buffer, which originally use to drive tone control section.

But I got question in my head.. which buffer stage I have to use? FET Minibooster using J201 or just normal preamp using NE5532 or RC4558??

Strange Clouds Form on Dec 7, 2015, Bekasi Indonesia.

Banner Design Djaheel

Spanduk Bengkel Las Karya Wijaya

sanatarium rev Dec09, 2015, sounds only

sound test of my handmade guitar effect, contains of : 2 preamps, 3 stages CMOS distortions, and a FET minibooster rev Dec 09, 2015, all diode clipping removed, 1st preamp voltage gain decreased to 100, 2nd preamp voltage gain increased to 50, CMOS gain decreased to clean output from too much distortion and gating effects, separable tone select of normal distorted preamp and distorted cmos stages.

Still too many unperfect things to consider, and will improve the sound quality to make this thing works good. Thanks for watching.

guitar : Ibanez PGM30WH, 2003, Japan.