Hoffman Amplifiers Tube Amplifier Forum

Other Stuff => Solid State => Topic started by: kagliostro on March 01, 2018, 12:26:01 pm

Title: Solid State version of some tube circuits (preamp and PI) - Here Link
Post by: kagliostro on March 01, 2018, 12:26:01 pm

I just remembered that some time ago I've read an interesting thread about the conversion of some Tube circuits to Solid State

I think this can be useful when you want to build a small amp but the "donor" circuit has not enough heater current to feed all the tube you require

there are schematics like this

(https://i.imgur.com/5Y6oXkW.gif)

the link is here

http://www.freestompboxes.org/viewtopic.php?f=13&t=24287 (http://www.freestompboxes.org/viewtopic.php?f=13&t=24287)

and attached you can find a pdf file with the schematics present on that thread

Franco

Title: Re: Solid State version of some tube circuits (preamp and PI) - Here Link
Post by: VMS on March 01, 2018, 06:25:43 pm

That is so wrong K.


Next you suggest we start using those nutubes   :laugh:


Someone should move this topic to the solid state area.


I kid of course

Title: Re: Solid State version of some tube circuits (preamp and PI) - Here Link
Post by: shooter on March 01, 2018, 08:25:38 pm

Quote

you suggest we start using those nutubes

I already did a thread on those :icon_biggrin:

Franco, I just faced that dilemma! my mono block build is about an amp short.  I "fixed" it by stealing from Peter to make Paul :laugh:  I still have a 60W SS PA, just in case :icon_biggrin:

Title: Re: Solid State version of some tube circuits (preamp and PI) - Here Link
Post by: kagliostro on March 02, 2018, 01:42:00 am

This thing come to my mind after reading the 6an8 thread

http://el34world.com/Forum/index.php?topic=23081.0 (http://el34world.com/Forum/index.php?topic=23081.0)

because of the low gain of the triode available for the pre section

no other reasons

This will be a solution on a tube amp, no SS amp stuff ........

Franco

Title: Re: Solid State version of some tube circuits (preamp and PI) - Here Link
Post by: VMS on March 02, 2018, 11:47:30 pm

I know Franco, i was just messing with you little.


Philosophical question, how much ss stuff can you put in amp and still call it tube amp?

Title: Re: Solid State version of some tube circuits (preamp and PI) - Here Link
Post by: kagliostro on March 03, 2018, 06:08:07 am

To me ...... a single "piece"

V1 or SF or FXLoop, may be PI

but only one at a time

the only one I can accept without too much effort, is SF

Franco

Title: Re: Solid State version of some tube circuits (preamp and PI) - Here Link
Post by: shooter on March 03, 2018, 09:12:27 am

what!, the Marshall valvestate is not a tube amp :icon_biggrin:

Title: Re: Solid State version of some tube circuits (preamp and PI) - Here Link
Post by: kagliostro on March 03, 2018, 02:49:13 pm

One preamp tube and it pretends to be a Tube Amp ......  :l2: :l2:  Nooo

Franco