From AC30 w/reverb my first Mix Amp schematic-have you councils ??

[Kagliostro]

This is my first schematic

it was a Vox AC30 + reverb from a 1978 schematic

this one http://www.voxamps.com/downloads/circuits/ac301978.jpg

and from this schematic https://taweber.powweb.com/store/6v30_schem.jpg

but I put some mods in, the more comes from Mesa Boogie schematics

other are my ideas from things i have seen in the web

can you help, I'm not sure about some values and components position (in red in my schematic)

Thanks for any council-help

Kagliostro

[J M Fahey]

Well, it is definitely a mix.
Can't even start to imagine what it may sound like.
Why don't you build it and tell us?
Some MP3s would be great, as, of course, some pictures.
I imagine it with Vox speaker cloth, Marshall gold fascia, Rectifier dented plate, Fender Twin knobs, Orange Tolex and the like, but I can be waaaay mistaken, of course.
Ah!, and a biker-approved chromed pipe Vox wheeled stand.

[Kagliostro]

May be the look is a Vox AC30 head but with a doubled top faceplate like in the Conqueror and also a low back faceplate and a low front faceplate

but this isn't the ultimate idea for the look

Yes the schematic have some "special" feature but I think nothing near some Mesa Boogie, see the attached photo

first image a Vox Conqueror
second Image a Mesa Boogie Dual Road King 3

[pdf64]

Best to build in a test bed chassis first - some ideas you may like and wish to carry forward to a final design, some you may not.
Certainly there are lots of good interesting things in there.
A possible problem may be the fixed bias output pair - there's a wide range of possible B+ levels available, especialy with the VVT. It may be difficult to set a bias level which suits both the highest and lowest B+.
Also the global negative feedback on the power amp. It may need a series resistor with the variable resistor, as if it is adjusted to 0ohms, there may be problems with oscillation.

[Kagliostro]

Thanks

In fact the idea is to build the AC30 with reverb and the original mod from Vox that are present in the AC30cc2 version, than add the other mod

about NFB you are right, I've think to put a 100k trimmer instead of a resistor because the value must be tried, it will be better to put a fixed resistor in series, also if the original schematic haven't a NFB control

Here I'm waiting your comments - all comments are welcome

Kagliostro