Also, the tone controls in the first amps were a “cathode follower” style of arrangement, with the second stage of V1 being used as an impedance converter, which adds no acquire.
I just needed to say thanks for posting all The nice data for people with the need to improve their amps! This is an extremely beneficial site!
but I’m not fairly certain how you can wire up the 250k pot for your tone Reduce. Does Pin one drop by ground and another two towards the places within the board wherever R23 was? Many thanks yet again for your entire assist!!
The coupling caps don’t modify in worth. They continue to be According to the schematic. The adjust will be to swap them out for better excellent caps, because the coupling caps do Engage in a role while in the tone in the amp.
So, any individual making an attempt to have the “primary” AC15 seem must start out by rewiring the stock amp to the outdated specs initial. Then, you’d should incorporate the best choke, an EZ81 rectifier tube and all the things that goes with it.
definitely superior mod for price. been applying for over per month now and it nonetheless performs nearly as good since it did on the first working day. No issues with swap in any way.
Should you’re Not sure which leg is which, get yourself a multimeter and wind the pot each of the way down and measure which legs Offer you 250K Ohm resistance.
I see somebody else experienced the identical issue I did soon after taking away the bright cap. I overheated the circuit board and lost the connection.
If you look inside of you’ll see two prolonged PCB boards. 1 board sits alongside the bottom on the chassis, Here is the key PCB board. The opposite PCB board is mounted vertically, powering every one of the Regulate knobs and it is known as the ‘pots board’ as all of the potentiometers are mounted to it.
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I had been questioning if the Tone Slice Mod by replacing the reverb volume pot could also integrate reverbs foot-switching functionality so that you could swap between a fixed resistor and another benefit based on the place the pot is about? Does that seem sensible and it is it feasible?
one hour function to maneuver some wires within and A further hour to cut out the exessive steel from the edges. I even mounted the amp on the rack via holes on sides in the entrance panel.
Take away all the screws and disconnect The 2 connector plugs circled. Go away the tiny connector that goes on the enter jack PCB board, this does not have to be eliminated.
The great thing as well is that this mod is probably the easiest to carry out, as you don’t even must pull the chassis to get it Best Vape Shop in Melbourne done.