Deluxe Reverb - Adding extra Tubes

[Bombacaototal]

Personally, I would not attempt this with the stock PT transformer with the end goal obtaining more headroom. I would use a PT with an HT current rating somewhat conducive to to the larger glass.

Kind of akin to putting a turbo on a 4 cylinder engine with 20lbs of boost and expecting it to make lots of horsepower with only 7psi of fuel pressure.

TM

Thanks for the advice. The only reason I am not changing the PT is due to physical space. I am unable to fit a 40watt in my DR head. Do you have any recommendation of a PT with
an HT current rating somewhat conducive to the larger glass.

http://www.allenamps.com/parts.php#transformers


TM

Thanks! I got this one http://triodestore.com/40-18107.html

[ToneMerc]

Thanks for the advice. The only reason I am not changing the PT is due to physical space. I am unable to fit a 40watt in my DR head. Do you have any recommendation of a PT with
an HT current rating somewhat conducive to the larger glass.

http://www.allenamps.com/parts.php#transformers


TM

Thanks! I got this one http://triodestore.com/40-18107.html

So you don't have the stock transformer afterall????

TM

[Bombacaototal]

So you don't have the stock transformer afterall????

TM

No! Thanks to your advice I just purchased this new PT. I needed the european voltage and hence why I could not get the one you mentioned. Allenamps referred me to triodestore. I did not know they had smaller beffed up PT like this. I probably can get my amp to around 40watts now

Probably now it makes sense to add the MOSFET as well!?

[ToneMerc]

Probably now it makes sense to add the MOSFET as well!?

Not in my opinion, my take is that the PI drivers are all about current swing.Thus, you are not going to turn a small wattage 2 output tube topology into a 4 output tube current monster. If you want the feel of a Dumble SSS, then build a SSS or a derivative.

I built a PI driver amp,with only two output tubes, but it used 100 watt output iron and had over 500V on the plates.

TM

[Bombacaototal]

I found an older post which deals with this same topic which I add here for future reference: http://ampgarage.com/forum/viewtopic.ph ... 20&start=0