6SJ7 Pentode 18 watt Lite...Formerly the ABSOLUTE Minimum

[StarGeezers]

Would anybody know of the schematic for an ultra simple 18watt... No MV, No TMB, one channel , perhaps a Tweed TC??? Or should we just de-construct the circuit into what we want??? Any assistance would be Greatly appreciated...!!!
We're planning a basic 18Watt P2P in a VJr chassis...

[kd]

Look in the downloads section for an 18 Watt Lite llb. It's a simple circuit and an outstanding amp.

Ken

[sub]

This is the 18W Lite
Best amp ever

[cGil]

Okay, one lite coming up. But don't you want the meal deal with the double meat & triple cheese, super size fries, and extra thick jumbo shake with that? After all, it's a lite, so you're cutting down on the calories.

Gil...

[BBQLS1]

Even simpler, try the minimalist.

[veets]

+1 on the Minimalist--big benefit here is that it has parallel triodes for the preamp = mo gain. And you can always add a tone control if you like.

[kd]

The lite llb also has parallel triodes that are switched in an out of parallel at the input jacks.

Ken

[keith]

The Minimalist would be even better if the parallel triodes were drawn as a cascode (cascade?) configuration. I have wired several amps this way, and it literally and absolutely beats the hell out of the parallel version.

[cGil]

Hey, why not use sacrifice another one of those of those 6SJ7's you're sitting on and go 'Roctal' with it. You could even throw in a TMB stack with that up front and still have gain to spare.

Gil...

[StarGeezers]

So many possibilities/choices... More schematic reading,head scratching just that my limited skills and simple needs have kept me to the simplest amps possible in the past...P2P w/T strips..

cGil, Drat!!! Now you've got me thinking of the Octal business ...I wanted to try the PP EL84' ,but the 6SJ7, AU driver and a couple 6V6's would be NICE too May have to build BOTH ... Sure glad I have some extra chassis ..

[zaphod_phil]

Maybe start minimal first time round, and then build the frankenamp with everything thrown in.

The lite llb also has parallel triodes that are switched in an out of parallel at the input jacks.

The main difference between the Minimalist and the Lite II is the latter has the tone control, and the two input jacks for single or parallel triodes.

The Minimalist would be even better if the parallel triodes were drawn as a cascode (cascade?) configuration. I have wired several amps this way, and it literally and absolutely beats the **** out of the parallel version.

You could do either. Cascade generally gives more gain than cascode, while cascode sounds somewhat more like a pentode.

[StarGeezers]

ZP, "Sound" advice!!! (excuse the pun)...Now where might one find these schematics??? I looked in the downloads with no luck...???

[kyoungsteadt]

Geezer,

How about the minimalist with a 6SJ7 as the preamp tube, into 12AX7 PI. I think that would sound really thick and fat. You might even want to consider a pair of 6V6s instead of EL84s in a build.

[StarGeezers]

Considering, considering , Oh my brain hurts !!!!
I can see myself ending up with as many 18watters as I now have Se amps

[zaphod_phil]

FYI Lite IIb schematic and layouts are here - http://www.18watt.com/modules.php?name= ... oad&cid=26
Minimalist is on http://www.18watt.com/modules.php?name= ... oad&cid=27
EF86 preamp layout (which can also use a 6SJ7) is at http://www.18watt.com/modules.php?name= ... it&lid=156