fontoponto
Well-known member
Hi everyone,
I wanted to ask the collective intelligence in here to help me with a pedal.
On FSB there is a new Baja Reactor V5 which I put in a combo pedal consisting of Reactor, Unicab and a Headphone amp.
www.freestompboxes.org
The reactor is causing oscillation. There are multiple ideas on how to solve it but they were for v4 wchich is different and not all could be tested by me.
www.freestompboxes.org
The only audible difference is when I put a cap on the 100k between the depth and pressence control.
Depth on min and presence on min on power on makes makes the pedal oscillate. When I turn up presence slightly the oscillation stops but when I reach position around 2 it starts again high pitched, goes away by turning further and starts at noon as deeper oscillation.
Can you guys point me into the right direction?
There is no audible change when I inrease the 4n7 on depth and the 100n on presence.
I removed all ics from the unicab and the headphone amp and only used the in and out of the reactor and it is the same behaviour. I thought that maybe one of the other effects have an impact on the reactor.
I wanted to ask the collective intelligence in here to help me with a pedal.
On FSB there is a new Baja Reactor V5 which I put in a combo pedal consisting of Reactor, Unicab and a Headphone amp.
BAJA REACTOR 010119 - Page 3
as promised - here is a rework of my Baja Reactor circuit - the new circuit is a lot simpler and functions well. i increased the Q of the resonance stage and simplified the input stage gain. Here is the updated schematic I have built this pedal as a two
www.freestompboxes.org
The reactor is causing oscillation. There are multiple ideas on how to solve it but they were for v4 wchich is different and not all could be tested by me.
BAJA REACTOR 010119 - Page 2
Two small changes to rev 4 (and other versions :wink: )to tame oscillation in presence and roll off some extreme top end above 20kHz. Changed feedback capacitor min final op amp to 1nF and added 220pF capacitor across 39k feedback resistor :D cheers
www.freestompboxes.org
The only audible difference is when I put a cap on the 100k between the depth and pressence control.
Depth on min and presence on min on power on makes makes the pedal oscillate. When I turn up presence slightly the oscillation stops but when I reach position around 2 it starts again high pitched, goes away by turning further and starts at noon as deeper oscillation.
Can you guys point me into the right direction?
There is no audible change when I inrease the 4n7 on depth and the 100n on presence.
I removed all ics from the unicab and the headphone amp and only used the in and out of the reactor and it is the same behaviour. I thought that maybe one of the other effects have an impact on the reactor.
