AX84 doesn't compare

danotron · Post by **danotron** » Mon Sep 07, 2009 4:34 pm

I just built a High Octain from AX84 and the tone just doesn't compare to my D builds.

Does anyone have any mod suggestions to get a good D'ish tone out of this amp?

danotron · Post by **danotron** » Mon Sep 07, 2009 4:34 pm

Tonegeek · Post by **Tonegeek** » Mon Sep 07, 2009 4:39 pm

danotron wrote:I just built a High Octain from AX84 and the tone just doesn't compare to my D builds. Does anyone have any mod suggestions to get a good D'ish tone out of this amp?

Can you post a schematic? also, what speaker setup are you using?

danotron · Post by **danotron** » Mon Sep 07, 2009 10:27 pm

Here's the schematic......

I am using a 112 pine open back cab.....tried it with a Celection 70/80 and a G12-65......its a little shrill and doesn't have that touch responce that I like with a D style amp..........do you think if I change the bias point on the preamp....220k/3k3 and 150k/2k2....do you think I will get something a little better?

Bob-I · Post by **Bob-I** » Mon Sep 07, 2009 10:41 pm

IMHO you simply can't get this tone from a single ended amp, I tried for about a year to get an Hi-Octane to sound more Dumble-like but finally gave up.

nickt · Post by **nickt** » Tue Sep 08, 2009 12:16 am

Really dislike the sound of the HiOctane - more a metal head's amp IMO. You might get more sounds out of it by creating a DLM type amp - at least you'd probably get some touch sensitivity.

Just my 2c

roknroll · Post by **roknroll** » Tue Sep 08, 2009 12:25 am

Basically a slightly modified Marshall 2203 from around 1975. FWIW I wouldn't bother with it except maybe to try other speakers.
Have fun

Noel Grassy · Post by **Noel Grassy** » Tue Sep 08, 2009 2:46 am

summarily dissed that shit, ouch.

There's another thread in here indicating the Dumble thing best occurs
in the 100W format. There's food for thought and grounds for further research IMO.

I'm still gathering all the components for a build in one of Brandon's
exquisite chassis. This will be quite a steep curve compared to any amp
I've built previously.

My comments are eminent.

NG.

benoit · Post by **benoit** » Tue Sep 08, 2009 3:14 am

Noel Grassy wrote:summarily dissed that shit, ouch.

There's another thread in here indicating the Dumble thing best occurs
in the 100W format. There's food for thought and grounds for further research IMO.

I'm still gathering all the components for a build in one of Brandon's
exquisite chassis. This will be quite a steep curve compared to any amp
I've built previously.

My comments are eminent.

NG.

You can do it, and it'll be totally worth it. I scratch built one my first time around. Just take advantage of all the great layouts, gutshots, etc, especially Rob Livsey's archive, if that's still up.

M Fowler · Post by **M Fowler** » Tue Sep 08, 2009 3:19 am

Exactly which dumble is this high octaine shooting for?

benoit · Post by **benoit** » Tue Sep 08, 2009 11:17 am

M Fowler wrote:Exactly which dumble is this high octaine shooting for?

I don't think it was ever supposed to be dumble-y, just that the OP wished it sounded a little more like one.

danotron · Post by **danotron** » Tue Sep 08, 2009 1:35 pm

I think I will try for a DLM........or something lke it...found some good info

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AX84 doesn't compare

AX84 doesn't compare

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Basically a mid 70's Marshall

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