Valve Bass Amps

Dodgy rythym and thick strings here...

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foal30
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Re: Valve Bass Amps

Post by foal30 »

Lawrence wrote:
Anvil Amps Alan wrote:Holden 200
Gunn 200
1969 Marshall Major 200 "Pig"
Check the last one on YouTube, I am building one slowly.
yes yes...and maybe even the Jansen 100!!
I had a Jansen 50 I liked recording with
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Re: Valve Bass Amps

Post by foal30 »

Any updates on this project @Mattallica?
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Re: Valve Bass Amps

Post by Mattallica »

foal30 wrote:Any updates on this project @Mattallica?
Sorry mate, nothing to report. I shifted flats recently and everything is still packed up. Motivation is low. I'll probably mock up some faceplates in the mean time to get things moving again. Keep an eye out

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Re: Valve Bass Amps

Post by rickenbackerkid »

el byrdo wrote:saw a band kast night and the bass player was playing through a sliverface bassman 100. Sounded good.

The bassist in a band I do sound for has a bass man 100 head which he occasionally uses. That thing into an 8x10 sounds amazing.

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Re: Valve Bass Amps

Post by tubeswell »

Any of the Sunn amps

Ampeg SVT sounds the meanest, but keeping the 6 x 6550s happy is an art form, and the transformer weight is a beaatch.

100W -200W Fender tube bass amps are tried and true.
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Re: Valve Bass Amps

Post by Anvil Amps Alan »

Repaired a Marshall VBA 400 a couple of weeks back, That amp is an absolute monster!
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Re: Valve Bass Amps

Post by Mattallica »

Anvil Amps Alan wrote:Repaired a Marshall VBA 400 a couple of weeks back, That amp is an absolute monster!
What had happened to it Alan?

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Re: Valve Bass Amps

Post by Anvil Amps Alan »

It was intermittently blowing the filament supply fuse F3.
I tracked the fault down to arcing under some silicon goop between the anode and filament
terminals on one of the 6550 sockets. (Pins 2&3)
The output valve section is hard wired on this beast.
The arc would appear after an hour or so of operation as a faint ticking noise.
I also installed a small veroboard panel to mount 8x 250 mA fuses for each of the 6550 cathodes so that
if an output valve should fail the amp can still operate and the blown fuse indicates which valve is
Short circuit.
Eight 6550 are not cheap to replace.
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Re: Valve Bass Amps

Post by Mattallica »

The VBA will look something like this

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Re: Valve Bass Amps

Post by foal30 »

This my practice amp

300W Tube Ashdown
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Re: Valve Bass Amps

Post by Mattallica »

Ok so i can't be arsed with the preamps that have 200k plate resistors (for now anyway). So here is the to do list as of now:

.Generic Fender type
.Ampeg SVT
.Marshall VBA
.Orange AD200B/Sunn Model T hybrid

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Re: Valve Bass Amps

Post by foal30 »

Mattallica wrote:Ok so i can't be arsed with the preamps that have 200k plate resistors (for now anyway). So here is the to do list as of now:

.Generic Fender type
.Ampeg SVT
.Marshall VBA
.Orange AD200B/Sunn Model T hybrid
If you ever want to have a fang on the Ashdown drop me a line bro
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Re: Valve Bass Amps

Post by jeremyb »

foal30 wrote:This my practice amp

300W Tube Ashdown
I wish you'd stand it upright!

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Re: Valve Bass Amps

Post by Mattallica »

If you ever want to have a fang on the Ashdown drop me a line bro
I need to get you to have a hoon on the module head through one of your bass cabinets. Some of the stock preamps should go well

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Re: Valve Bass Amps

Post by foal30 »

jeremyb wrote:
foal30 wrote:This my practice amp

300W Tube Ashdown
I wish you'd stand it upright!
The Amp??
Miles - Mingus - Monk
Fender - Steinberger- Tobias
Ashdown - Free The Tone - Diamond- Wounded Paw

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