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Hoffman Amps Forum image Author Topic: Is there a Hoffman filter cap board for AB763 DR?  (Read 5038 times)

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Offline tubeswell

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Is there a Hoffman filter cap board for AB763 DR?
« on: July 13, 2014, 01:04:02 am »
i.e.: for the caps that sit in the doghouse?


(Couldn't see it for looking in the on-line store)



TIA
A bus stops at a bus station. A train stops at a train station. On my desk, I have a work station.

Offline EL34

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Re: Is there a Hoffman filter cap board for AB763 DR?
« Reply #1 on: July 19, 2014, 05:59:58 pm »
Hi, I don't have a drilled board for filter caps.
You could make your own very easy
It's less than 15 lugs or eyelets

I mount mine along the front panel under the pots and eliminate all that monkey business

Here's my Hoffman AB763 amp

« Last Edit: July 19, 2014, 06:23:52 pm by EL34 »

Offline EL34

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Re: Is there a Hoffman filter cap board for AB763 DR?
« Reply #2 on: July 29, 2014, 06:28:08 am »
Another easy method is to just set up terminal strips and string your caps between them
Super easy if you have some room inside the amp

Offline EL34

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Re: Is there a Hoffman filter cap board for AB763 DR?
« Reply #3 on: July 29, 2014, 07:02:54 pm »
Also, one more suggestion

Ever see the really old cap cans that had the caps glued inside with sticky rubber
And they had a wire bundle coming out a grommet hole?

No Board needed for that sort of arrangement

I always opt for not using a cap can, cap board and all that extra unneeded stuff

I really like having the filter caps inside the chassis and along the front edge under the pots
« Last Edit: July 29, 2014, 07:05:16 pm by EL34 »

Offline EL34

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Re: Is there a Hoffman filter cap board for AB763 DR?
« Reply #4 on: July 30, 2014, 05:40:18 pm »
Thanks,
That was a bombed out Deluxe Reverb chassis that was part of a pile of amp junk I bought
The power transformer hole had been hacked

I installed one of my AB763 1 channel boards
I installed a 022798 power tranny which is the super reverb PT
I made a 2 x 10 baffle board for it

So it's a Super Deluxe Vibrolux reverb bastard  :icon_biggrin:

I still have this amp
It's my go-to amp for clean surf stuff
« Last Edit: July 30, 2014, 06:12:02 pm by EL34 »

Offline Willabe

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Re: Is there a Hoffman filter cap board for AB763 DR?
« Reply #5 on: July 30, 2014, 06:00:58 pm »
Yes it is beautiful work!

Well if that's a SR PT in there now, then they must have hacked it for a Twin Reverb PT?


               Brad    :icon_biggrin:

Offline EL34

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Re: Is there a Hoffman filter cap board for AB763 DR?
« Reply #6 on: July 30, 2014, 06:06:05 pm »
Thanks and if I remember correctly, it had a twin PT sized hole and it might have had some bastard power tranny in it when I got it
This was in the late 90's and I have CRS disease

As you can see I had to use fender washers to get a grip on the chassis for the SR power tranny

Not to hijack this thread any more than I have but this is this amp
http://el34world.com/Misc/Music/files/1983Merman.mp3
« Last Edit: July 30, 2014, 06:13:06 pm by EL34 »

Offline billcreller

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Re: Is there a Hoffman filter cap board for AB763 DR?
« Reply #7 on: August 02, 2014, 09:51:53 pm »
I think I have CRS disease too, but I can't remember...
I'll never figure this out......

Offline EL34

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Re: Is there a Hoffman filter cap board for AB763 DR?
« Reply #8 on: August 03, 2014, 06:04:47 am »
 :icon_biggrin:

Offline EL34

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Re: Is there a Hoffman filter cap board for AB763 DR?
« Reply #9 on: August 10, 2014, 09:51:56 am »

Offline jojokeo

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Re: Is there a Hoffman filter cap board for AB763 DR?
« Reply #10 on: August 11, 2014, 02:23:55 am »
Hi Doug,
Do you have a photo of the caps under the pots that shows the view looking from the rear of the chassis? I'd like to see how you've mounted & ran the resistors. Also, is the white wires going to/from the pots all shielded? Hard to tell...

thanks-
To steal ideas from one person is plagiarism. To steal from many is research.

Offline EL34

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Re: Is there a Hoffman filter cap board for AB763 DR?
« Reply #11 on: August 11, 2014, 07:16:42 am »
I have a bunch of pics of the guts on this page


http://el34world.com/Hoffman/AB763Project.htm



 


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