Preamp section and power section

[jestaudio]

is it possible to mix and match preamp sections and power sections, ie use the power section and PI off say RJ's rockster and marry it up to the preamp section off a express or maybe a fender bassman etc, basically what i,m attempting to do is mix and match on a test bed before building a complete amp

[Firestorm]

Yes. Preamps are voltage gain sections; power amps are power gain sections. Mix anything you want.

[jestaudio]

Yes. Preamps are voltage gain sections; power amps are power gain sections. Mix anything you want.

Cheers, i was pretty sure there would'nt be a problem, next stop a express pre into cathode biased 6l6 power section

[Firestorm]

Yes. Preamps are voltage gain sections; power amps are power gain sections. Mix anything you want.

Cheers, i was pretty sure there would'nt be a problem, next,, stop a express pre into cathode biased 6l6 power section

You want to be a little careful. Don't push the grid signal so hard it drives the grids negative wrt the cathodes. The tubes want to go AB2. Sounds funny unless you design for it.

[skyboltone]

Yes. Preamps are voltage gain sections; power amps are power gain sections. Mix anything you want.

Cheers, i was pretty sure there would'nt be a problem, next,, stop a express pre into cathode biased 6l6 power section

You want to be a little careful. Don't push the grid signal so hard it drives the grids negative wrt the cathodes. The tubes want to go AB2. Sounds funny unless you design for it.

And if you don't understand what Firestorm is saying here then you probably shouldn't mix and match. Not to say it's rocket science mind you, just that different power tubes have different drive requirements.

[jestaudio]

Cheers, i was pretty sure there would'nt be a problem, next,, stop a express pre into cathode biased 6l6 power section

You want to be a little careful. Don't push the grid signal so hard it drives the grids negative wrt the cathodes. The tubes want to go AB2. Sounds funny unless you design for it.

And if you don't understand what Firestorm is saying here then you probably shouldn't mix and match. Not to say it's rocket science mind you, just that different power tubes have different drive requirements.

hence the reason for using RJ's rockster power section, gives me a chance to try out tubes you would,nt normally use in a express build

[pdf64]

You want to be a little careful. Don't push the grid signal so hard it drives the grids negative wrt the cathodes

Did you mean 'grids POSITIVE wrt the cathode?
Assume you were refering to the power tube grids.
Pete

[Firestorm]

Yes. Preamps are voltage gain sections; power amps are power gain sections. Mix anything you want.

Cheers, i was pretty sure there would'nt be a problem, next,, stop a express pre into cathode biased 6l6 power section

You want to be a little careful. Don't push the grid signal so hard it drives the grids negative wrt the cathodes. The tubes want to go AB2. Sounds funny unless you design for it.