Alphaform
Registered User
Join date: Jul 2012
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#1
If I switched the 84's to 34's in my AC30C2, what kind of tone would I be more expecting? Like a more Marshally crunch?

I was thinking about doing this. Although I'm unsure if it's even possible

Cheers.
Last edited by Alphaform at Oct 3, 2012,
Cathbard
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Join date: Oct 2009
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#2
Can't be done. They don't even use the same sized sockets.
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Alphaform
Registered User
Join date: Jul 2012
1,942 IQ
#3
Quote by Cathbard
Can't be done. They don't even use the same sized sockets.


Yeah thought something wouldn't work with it.

Ta anyway.
GABarrie
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Join date: May 2011
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#4
a) the sockets are the wrong size so you would need to punch larger holes in the chassis and fit new sockets

b) the power transformers won't be able to handle the higher current draw, or the higher power output and the impedance will be wrong

c) the cathode biasing resistor value would be wrong and probably not high enough wattage rating to handle the current, plus would probabaly be far too low a bias and would result in the 34s red plating

in short... lots of work, money, and you will end up destroying your amp
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Kevin Saale
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Join date: Dec 2007
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#5
Quote by GABarrie
a) the sockets are the wrong size so you would need to punch larger holes in the chassis and fit new sockets

b) the power transformers won't be able to handle the higher current draw, or the higher power output and the impedance will be wrong

c) the cathode biasing resistor value would be wrong and probably not high enough wattage rating to handle the current, plus would probabaly be far too low a bias and would result in the 34s red plating

in short... lots of work, money, and you will end up destroying your amp


Pretty much. Not to mention, it'll still sound more like an AC30 than a Marshall Those 18w marshalls don't sound like AC30s even though they run el84s, just a little food for thought.
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Cathbard
Grumpy Old Tech
Join date: Oct 2009
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#6
Quote by Kevin Saale
Pretty much. Not to mention, it'll still sound more like an AC30 than a Marshall Those 18w marshalls don't sound like AC30s even though they run el84s, just a little food for thought.

Indeed. An 18W'er sounds like a plexi and is running EL84's.
Gilchrist custom
Yamaha SBG500
Telecasters
Randall RM100 & RM20
Marshall JTM45 clone
Marshall JCM900 4102 (modded)
Marshall 18W clone
Fender 5F1 Champ clone
Atomic Amplifire
Marshall 1960A
Boss GT-100


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My band