atomic 18
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atomic 18
Anybody have a schematic for an Atomic 18?
I have a re-tube and bias coming, a schematic is always nice to have on hand.
I have a re-tube and bias coming, a schematic is always nice to have on hand.
lazymaryamps
Re: atomic 18
Soldano? Atomic 16 in that case. The schem is up at freeinfosociety. Pretty simple three stages, long tail PI, 2xEL84 cathode bias..
Re: atomic 18
It's fixed.soma_hero wrote:2xEL84 cathode bias..
Re: atomic 18
Atomic 18? A 18-XXX from Atomic Amps?Anybody have a schematic for an Atomic 18?
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Re: atomic 18
The pod dock amp slave thing, not the soldano.
Its is the el84 not the 6l6. Atomic amps I've found manuals etc, but not a scheme.
It's an adjustable fixed etc... shouldn't be too bad at all, but scheme always help.
Its is the el84 not the 6l6. Atomic amps I've found manuals etc, but not a scheme.
It's an adjustable fixed etc... shouldn't be too bad at all, but scheme always help.
lazymaryamps
Re: atomic 18
Nothing in my files, maybe Atomic could help.I've found manuals etc, but not a scheme.
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Re: atomic 18
It's stating to look that way. I'll post it when I get it. The guy really loves the thing.
Tube power side makes a ginormous difference with those SS digital pre's.
Tube power side makes a ginormous difference with those SS digital pre's.
lazymaryamps
Re: atomic 18
I bought a dead Atomic Reactor 18 off of ebay. Just the unit itself, not the whole cabinet. Atomic was no help in getting a schematic. I did not even get a response back. Also found lots of customer support complaints.
Never did anything with it yet. Sitting in a box. One day...........
Never did anything with it yet. Sitting in a box. One day...........
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- Posts: 2582
- Joined: Sat Dec 22, 2007 1:16 am
- Location: central Maine
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- Posts: 2582
- Joined: Sat Dec 22, 2007 1:16 am
- Location: central Maine
Re: atomic 18
The hardest thing is dis-assembly, there are a lot of connectors.
Once inside look for R24 and VR1. R24 is a 10 ohm to ground from the cathode's.
Don't forget to move the decimal with the math. Readings are .XXXX V.
you want .0XXX ma/mv. VR1 is the adjustment, and you can grab the rest of
the V measurements off the pin out on the pcb. Not too bad.
Cheap amp, pretty box, looks real easy to mod, or step up the caps at least.
Once inside look for R24 and VR1. R24 is a 10 ohm to ground from the cathode's.
Don't forget to move the decimal with the math. Readings are .XXXX V.
you want .0XXX ma/mv. VR1 is the adjustment, and you can grab the rest of
the V measurements off the pin out on the pcb. Not too bad.
Cheap amp, pretty box, looks real easy to mod, or step up the caps at least.
lazymaryamps
Re: atomic 18
if you need the soldano atomic scheme go on
http://www.schematicheaven.com/newamps/ ... omic16.pdf
this is right.
PT may be a 275-0-275 120mA / 6.3 4A
8k pp OT it's good one.
http://www.schematicheaven.com/newamps/ ... omic16.pdf
this is right.
PT may be a 275-0-275 120mA / 6.3 4A
8k pp OT it's good one.
Re: atomic 18
Thanks Andy,
I'm the owner of one of these amps... I've changed the tubes once... but didn't bother with bias. This will give me a great starting point!
Do you think changing some components would improve the amp much? Or would I be better off leaving it stock?
I'm the owner of one of these amps... I've changed the tubes once... but didn't bother with bias. This will give me a great starting point!
Do you think changing some components would improve the amp much? Or would I be better off leaving it stock?
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- Posts: 2582
- Joined: Sat Dec 22, 2007 1:16 am
- Location: central Maine
Re: atomic 18
About the Soldano Atomic 16, this linked above is the only schem avilable all over the net, but I've never seen an Atomic or an Astroverb exactly matching that particular schem. Perhaps this is a prototype or a very early version. The common Atomics out there are like the one I own. This is the schematic if anyone is interested.
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Re: atomic 18
And this is the same schem with a couple of mods (currently implemented in mine) and the voltage readings using 230/110 VAC step down tranny.
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