Tube Amp Archive

My power transformer is turned 180 degrees what a Marshall is dead silent no hiss or hum the magnetic flux is not strong enough
to interfere with the output transformer that said on my 150 watt SSS build I did have to move the output transformer 90 degrees

On the 50 watt version I used Drake 789-139 OPT and 1202-118 power transformer

Good to see you Eric
I used Jon's ( jborders ) spec power transformer on the first #183 build also

Steve.

I found 470 volts B+1 under load worked well on all 4 of my #183 builds
found the filter supply to stiff 330uf 47uf went with 220uf 33uf

Amp Parts Direct part # APD-8026H 1.7K is what you want for #183 100 watt
I built a 100 watt #183 it was to loud for stage use I did use a Dagnell C1998 from a 1968 Super Lead 100
had to use a Dumblator next I built 3 50 watt versions using Dagnell 784-139 OPT no Dumbleator required

Details this ODS amp predates #102 not by much same year built in the photo the filter board and preamp board match
when you look at #102 looks to me the filter board was replaced at some time

I didn't care for the sound of F&T's in my first ODS build 2010 switched to precision type PS in my builds from that point on

From what I can see from your photo your relay is wired wrong whats up with the yellow jumper ??

Be well Tom happy to know you are still with us

Your friend Steve.

Thank you Mark

It's too bad gut shots of #124 amp are no longer available When I built two 100 watt #124 amps we made our own PC boards. What Gage wire are you using for the power supply filter grounds ?? Mr. Dumble used 18 AWG solid core wire filter and filament and solid core 20 AWG solid core wire on the preamp...

I have a few AE .1uf @ 630 volt

I used the NOS Thordarson-Meissner set in my #102 build But on #183 had a custom PT and a 1968 OPT from a 100 watt Marshall Super Lead That said the #183 build is way to loud with out the use of the Dumbelator Next I built a pair of 50 watt #183 no need for a Dumblator 183 001.JPG Green Hornet 3 001...

I run a pair of 50 watt ODS amps 99% of the time no effects it's hard to beat the overdrive channels if I want a little extra
the Klon KTR and the Drybell The Engine works well

Looks like 16 years today be well thank all of you