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Hoffman Amps Forum image Author Topic: AA964 vs AB763  (Read 2682 times)

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Offline mresistor

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AA964 vs AB763
« on: August 05, 2016, 01:14:33 pm »
I've been looking at these two and comparing, but don't see much difference. What are the differences? If any.
Would be cool to use an AB763 turret board with the BV trem to build a real Vibrolux Rev amp.
« Last Edit: August 05, 2016, 01:19:22 pm by mresistor »

Offline HotBluePlates

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Re: AA964 vs AB763
« Reply #1 on: August 05, 2016, 01:36:25 pm »
I'm glad you specified "Vibrolux" because AA964 is also a blackface Princeton circuit number.

The Hoffman AB763 document highlights most (all?) of the parts which vary. R45 will be 100Ω instead of 47Ω, and you'll have 6.8kΩ resistors instead of Mid pots. Other than that, they look identical with a cursory examination.

Offline mresistor

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Re: AA964 vs AB763
« Reply #2 on: August 05, 2016, 01:42:51 pm »
So it should work just dandy...   :icon_biggrin:    Thanks HPB    I much prefer the BV trem...  (6G5?)   

Offline HotBluePlates

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Re: AA964 vs AB763
« Reply #3 on: August 05, 2016, 01:47:24 pm »
Bias-vary trem: 6G16 Vibroverb.

 


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