Spitfire Build

[ampbldr2]

I finally completed my spitfire build. Sounds great and has that great el84 chimy cleans. Just in time for the holiday break where i can break it in.

Thanks Mark for all the info on this one. I got the last chassis from Ken. This was on the oops shelf and i managed to get it at a great price.

[M Fowler]

Looks good. I noticed Ken Watts stopped selling his 18w Heyboer tranny set too bad I like those.

Does the switch do much mine didn't have much effect. Some guys changed the MV to a treble cut control instead. I left my amp stock. I tried different values on the PI but went back to stock.

I gigged with mine in small bars for several years worked well cutting through the mix as it is a brighter amp but matched with Les Paul or similiar humbucker guitar is works.

Mark

[ampbldr2]

The switch does nothing to the tone. I like how bright the sound is. Still trying different preamp tubes.

[sixstringer]

The switch does nothing on mine either, but why? Changing the preamp tube bias ought to change the tone, it does in other circuits. I tried other value caps and found still not change. Maybe I'll go the other way and un-bypass the resistor. What do you think?

[M Fowler]

Try a .68uf as the bypass cap and the 25uf as the boost.

[ampbldr2]

Here is a demo using a SG faded in the bridge position with the spitfire at moderate volume and a 2x12 cab with v30+G12H.

I just got some new instrument cables and had to record something with them. Forgive the sloppy playing.

-Happy Holidays

[M Fowler]

I like the tone in your clip some might say it is too brite but not me. This amp really shines in a band setting and using a pedal board if your into the more aggressive kick ass music.

I do however agree that the tone control would be better off made into a power amp treble cut control used for tone adjustment in this circuit as the 1k2 resistor in the PI does brighten the amp. I plan to put in the cut control and see if I like that.

I tried to change out the circuit to lower PI values but I like the amp better stock as Ken Watts presented it.

Mark