Hi all ,I'd like to start a new discussion about the tremolo circuit of the Borderline special amp.
starting from the photos available, we could try to draw a diagram, keeping in mind a few points that I would like to share, and please correct me if I'm wrong.
Tremolo without LCR in circuit
No cathode bias tremolo
Tube pins
pin1: blue wire (probably B+ supply?)
pin2: into shrink blu tube , green and black wires.
pin3: red wire go to XLR and Yellow wire go to 4k7/22uF 50V
pin6: B+ supply from 6k8/22K joint (can cap)
pin7: light brown wire, or so , connected to the central lug pot intensity
pin8: to pin 3 of V1
Thanks
Sergio
Borderline Tremolo
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Borderline Tremolo
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Re: Borderline Tremolo
del
Last edited by sergio on Mon Feb 27, 2017 9:06 pm, edited 1 time in total.
Re: Borderline Tremolo
wow...no one interested!
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PaisleyTube
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Re: Borderline Tremolo
I'm interested, when I get a chance to come up for air I will peep this. I did an eyelet board layout awhile back and I will post that too.sergio wrote:wow...no one interested!
TM
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PaisleyTube
- Posts: 208
- Joined: Fri Feb 24, 2006 11:29 am
- Location: Vleuten, The Netherlands
- Contact:
Re: Borderline Tremolo
It must be a VibroChamp cathode-bias-wobble trem if it's going to pin 3 of V1a but on the 1st stage io. the 2nd stage. Different cap-values and power-supply-nodes......
Chris
Love, peace & loudness!
Love, peace & loudness!
Re: Borderline Tremolo
my layout:
del
del
Last edited by sergio on Mon Feb 27, 2017 9:07 pm, edited 1 time in total.
Re: Borderline Tremolo
Interested but too busy right now. Sorry. Maybe in a few days. Jelle