I made a amp that based on Blackface.
To be accurate, It is Mesa Rectoverb clean channel.
http://www.pedalparts.co.kr/shop/board/ ... %26div%3D0
It has very Fenderish sound. I'm very satisfied with it.
Now I remove the capacitors at the gain pot and add a bright switch.
And I can use it as Deluxe Reverb by install the cathode bypass capacitor switch.
And Add a PPIMV. Now I can get hotter sound in bedroom level.
But there is just one trouble.
Presence pot dosen't works at all.
I checked the layout and wiring status several times, but I can't find the different from the circuit diagram.
So I want to ask if there is a problem with the schematic.
And I would like to ask if there is a problem in other areas besides the schematic.
I used Hammond Deluxe Reverb OT.
http://www.hammondmfg.com/pdf/EDB1750H.pdf
Presence not working. Please Help!
Moderators: pompeiisneaks, Colossal
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Re: Presence not working. Please Help!
Nfb must be connected, try jumper the 2.7k resistance.
When ppimv is low you have less presence effect.
When ppimv is low you have less presence effect.
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- Posts: 261
- Joined: Fri Apr 18, 2014 8:29 am
Re: Presence not working. Please Help!
Thanks for advise! I don't install NFB switch.(always connect)
It did not seem to change anything even if set the PPIMV full.
(I certainly do not remember. When I go home I will check again)
I'll try to jump 2.7K. Thanks!
It did not seem to change anything even if set the PPIMV full.
(I certainly do not remember. When I go home I will check again)
I'll try to jump 2.7K. Thanks!