Well, I was able to find a couple of 6800uF caps that are 100 volts and measure 35mmx70mm on Amazon for a whole $9.95 for 2pcs.

However, I would still like to know what the advantages or disadvantages would be if I used the 10000uF filter caps in the power section.

I'm assuming maybe a little bit better and tighter bass response if anything??

Thanks again in advance.

-J

If I understand you correctly, you want to modify the amp to rawk hard (and hopefully not die young) but are considering using pedals as well? Also, you're after the 5150 tone?
Perhaps you have a schematic you would care to share, so we could make a suggestion or two?

Thanks for the replies.

Here is pic I found online (since I wasn't smart enough to take some while I was at it.)

The cap in the photo appears to be about 35mm if I'm not mistaken.

I did find a couple of 35mmx70mm 100V 10000uF caps in my forgotten stash. Is there any reason I would NOT want to use a 10000uF cap in the power supply positions??

Thanks in advance.

-J

Fyi it does not have chassis ground the green wire is not connected to anything maybe it should be attached to one of the three variac mounting bolts ?

I present to you my ghetto redneck ridiculously ugly and heavy variac

So yeah 3/4 inch plywood isn't always a good thing 

Also a quick note...if you need a hole saw to insert an object that is two inches in diameter...don't use a two inch hole saw 

Also....solid core wire seems all primo and all but it's a pain   

Oh yeah also if you are using scraps of wire that are different colors it makes everything more interesting.
 
And....if you can buy a variac with gauges and outlet and switch etc it's probably cheaper and ergonomically compact and easier on the eyes 
Anyhow here it is running a box fan and old lamp with two bulbs

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And the inside
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I started with an ancient object called an Adjust-A-Volt and could not find anywhere on the web old forums anywhere the pinout save for one pic and thread so I tried it and it worked

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After all this I don't really have a need for it except I do want some bonding posts only so I can use it for the experiments in my book like when I need five volts ac or something for a breadboard.

One weird thing trying to be cautious for some reason I took a voltage measurement on the three mounting bolts and too my horror got like 27v ac  so after yet more world wide web forum etc I connected it to ground with a resistor then measured voltage across the resistor which was basically zero.

So...could be I'm measuring stuff wrong    or there is a phenomenon called stray voltage ⚡ 

 

Gain in a tube amp is a bit tricky to calculate for the first time, try these tools to get a handle on the concept. This should keep you busy for a little while.
https://www.ampbooks.com/mobile/amplifier-calculators/

Then there are Merlin's web pages after that to read through:
http://www.valvewizard.co.uk/index.html

And Rob's pages as well:
https://robrobinette.com/Amp_Stuff.htm

When you have done all that then you go to Sushi Box FX and start drooling over what HV Tube pedal you want for Xmas:
https://www.sushiboxfx.com/

And if you think your soldering is good enough then you jump over to Nathans's (Sushi Box) other shop and order a bare PCB and build your own High Voltage Tube Pedal:
https://c2celectronics.com/

Cheers
Mick

I have a 15w tube amp.  It sounds great but I need more gain..not cannibal corpse gain but yeah I'll take back in black or travers snortin whiskey gain.

So what's the big deal  go buy a pedal /end thread 

But when I had my 5150 combo  I could max out one volume and put the other one on low and with an Ibanez chorus pedal be happy.

To cut to the chase I guess it's gonna be more than "dude...just change a resistor or add a capacitor"

 

I have on hand a forty year old boss heavy metal pedal I've never been crazy about it does an ok job and a pod500x and it too is ok but I'm not really happy with either one and the thing is dude I'm not that hard to please.

We have a good shop in town that has managed to survive good guys lots of used and new pedals let you test drive em etc

It's either do that or just order a mxr 5150 pedal from eBay or reverb....

Kinda ridiculous because I love my Peavey audition chorus that you guys fixed and play through it 99.9999 % of the time.

And I could kick it down a flight of stairs and it would still work whereas I'm on tip toes with this tube amp omg is it warmed up omg is it cooled down 

Sorry I guess I'm rambling.

Common values would be 5600 or 6800uF, either should be close enough.  And 63V would probably be more common.

Yes, good points about setting up the circuit.
You essentially had the choke/ballast as the load for the generator.  That is not going to do much in the way of filtering.
Look up LC filters (inductor/capacitor) and set up some in series or parallel with the generator.
Even how you did it, but with a resistor in series with the choke should do something.

That would be amplitude modulation in addition to the burst.  I don't see anything like that in the controls.