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Dukane PA head into Magnatone 401
I thought I would share some pics of my latest project at my home for mistreated amps.
I had, on my workshop shelves, several messed with amps I got cheaply because they didn't work. I am just learning this stuff, coming from a background that never included electronics.
I had a Dukane PA head that I almost have working. I was getting help in another thread with this and am nearing completion. It was recently recapped (sort of) and the wiring for the volume and tone controls were completely missing. I have it working now, but it is very very weak so I will be pursuing that in 2012.
It was in its original very unattractive cabinet.
I also had a Magnatone 401 which buzzed very nastily. I had tried several ways to correct this with no success. Since it is a power transformerless model, I decided to cut my losses and combine the two.
After doing some rudimentary work on the sheet metal of both chassis, I got them together fairly neatly and attempted to rewire the volume control. With a 6K11 as the preamp tube and two no longer used inputs, mic and phono, (wiring for these missing also), this is more complex than anything I am familiar with.
I took the old 6" speaker out and enlarged the baffle hole to take an 8". Not earth shaking but I trust it will sound better. I also had to drill an enlarged hole for the pilot light.
The old speaker, which was in great shape, is an Alnico Jensen 4 ohm job. I put it in a new Champion 600 and it sounds real good.
I have here a pic of the old dukane cab. You can see where the EL84s have scorched the metal.
Also there is a pic of the maggie with her new chassis and speaker. I have to wrap up the unused OT outputs yet.
If anyone can give me some pointers on wiring the volume control to get more out of this it would be appreciated. I now have one more almost working amp instead of two anchors.
I had, on my workshop shelves, several messed with amps I got cheaply because they didn't work. I am just learning this stuff, coming from a background that never included electronics.
I had a Dukane PA head that I almost have working. I was getting help in another thread with this and am nearing completion. It was recently recapped (sort of) and the wiring for the volume and tone controls were completely missing. I have it working now, but it is very very weak so I will be pursuing that in 2012.
It was in its original very unattractive cabinet.
I also had a Magnatone 401 which buzzed very nastily. I had tried several ways to correct this with no success. Since it is a power transformerless model, I decided to cut my losses and combine the two.
After doing some rudimentary work on the sheet metal of both chassis, I got them together fairly neatly and attempted to rewire the volume control. With a 6K11 as the preamp tube and two no longer used inputs, mic and phono, (wiring for these missing also), this is more complex than anything I am familiar with.
I took the old 6" speaker out and enlarged the baffle hole to take an 8". Not earth shaking but I trust it will sound better. I also had to drill an enlarged hole for the pilot light.
The old speaker, which was in great shape, is an Alnico Jensen 4 ohm job. I put it in a new Champion 600 and it sounds real good.
I have here a pic of the old dukane cab. You can see where the EL84s have scorched the metal.
Also there is a pic of the maggie with her new chassis and speaker. I have to wrap up the unused OT outputs yet.
If anyone can give me some pointers on wiring the volume control to get more out of this it would be appreciated. I now have one more almost working amp instead of two anchors.
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