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Hoffman Amps Forum image Author Topic: AA864 turret board, which one to use?  (Read 3417 times)

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Offline mozz

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AA864 turret board, which one to use?
« on: December 10, 2016, 02:52:04 pm »
AA864 turret board, which one to use? I don't see that particular turret board listed, is there one to use? I would rather turrets than eyelets if possible. Also, another question, how do i know which cap board? This is a dripedge silverface chassis feb 69, that was completely gutted except all the original iron, friend wants a 64-65 blackface made out of it. I have the original cap pan, i can fit the 6.5" board (large 2).

Offline EL34

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Re: AA864 turret board, which one to use?
« Reply #1 on: December 16, 2016, 12:18:20 pm »
I don't make that board as a turret board, only as an eyelet board with the original fender parts layout


Fender layouts do not translate well to turret boards


Eyelets have much larger holes and Fender crammed more components into the eyelets holes than will fit in my turret lugs


Cap boards go by the number of filter caps the amp has
You just look at a fender schematic and count the filter caps

Offline mozz

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Re: AA864 turret board, which one to use?
« Reply #2 on: December 16, 2016, 03:55:26 pm »
Well i should have rephrased the question. If there is no turret board available for this model, which eyelet board? I do not see a AA864 or AB165, only see a AA165, can this board be used for all 3 models? I'm hoping it can because i just ordered it. I only see a few changes, nothing major, between those 3 models. Thanks again.

Offline EL34

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Re: AA864 turret board, which one to use?
« Reply #3 on: December 16, 2016, 04:01:29 pm »
I don't know
You would have to compare the two layouts and see if the eyelets are in the same place

Many Fender layouts are the same as another model

Offline sluckey

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Re: AA864 turret board, which one to use?
« Reply #4 on: December 16, 2016, 05:15:17 pm »
The AA864 and AB165 are different schematics and different layouts.

« Last Edit: December 16, 2016, 05:38:49 pm by EL34 »
A schematic, layout, and hi-rez pics are very useful for troubleshooting your amp. Don't wait to be asked. JUST DO IT!

Offline EL34

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Re: AA864 turret board, which one to use?
« Reply #5 on: December 17, 2016, 08:29:32 am »
I can add the AA864 to my eyelet boards catalog page

Then you can just request that I drill it for lugs instead of eyelets

Hopefully you would not run into too many issues of not enough room for the parts in a lug hole

Why do you want turret board
Why don't you get the nice black epoxy board with eyelets?
They are way nicer than fiberboard

Offline EL34

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Re: AA864 turret board, which one to use?
« Reply #6 on: December 17, 2016, 08:35:14 am »
Here's the AA864 layout
http://el34world.com/charts/Schematics/files/fender/Fender_Bassman-AA864-layout.pdf


Here's the schematic
http://el34world.com/charts/Schematics/files/fender/Fender_Bassman-AA864-schematic.pdf

Looks like the filter cap board is the standard 5 cap board with the first stage being two 350uf caps in series

I make that board and it is Filter cap board Large, shown on this page
http://el34world.com/charts/Schematics/files/fender/FilterCapLayouts.gif

Offline EL34

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Re: AA864 turret board, which one to use?
« Reply #7 on: December 17, 2016, 09:18:13 am »
I added the Bassman AA864 board to my catalog here
http://hoffmanamps.com/MyStore/catalog/EyeletBoard.htm


I already have the cap board and the bias board listed on the page above
Cap board large
Bias board 2

Offline Willabe

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Re: AA864 turret board, which one to use?
« Reply #8 on: December 17, 2016, 09:53:54 am »
I added the Bassman AA864 board to my catalog here
http://hoffmanamps.com/MyStore/catalog/EyeletBoard.htm

I think that's a very good addition to your boards.  :icon_biggrin:

There have been a number of guys here building/repairing that amp. It seems to be popular.

Offline BetterOffShred

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Re: AA864 turret board, which one to use?
« Reply #9 on: December 23, 2016, 03:47:00 pm »
back when I was blackfacing my '68 I would have bought one in a heartbeat!   Just saying!

-Brett

Offline EL34

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Re: AA864 turret board, which one to use?
« Reply #10 on: December 23, 2016, 08:23:54 pm »
Well, now you can :)

 


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