Project27 adding reverb and overdrive

[bbmf]

Hi,

I am building guitar amplifier Project27 from RodElliott. Preamp is ready and currently I work on the power amp.

100W Guitar Amplifier (Mk II)

I want to add reverb to it, I was thinking about Equinox II digital reverb

The Valve Wizard

Also I want to add overdrive, something like Tubescreamer 808.

The question is where to put this in, before preamp or after and in which order? Do I need to bypass preamp or not? Any suggestion or thoughts about this are welcomed.

Also if you prefer other overdrive or think that would work better in this setup please shared it with me.

Thanks

 

[PRR]

> The question is where to put this

Almost has to go "in front".

The reverb is designed for Guitar Level, and does not have much headroom.

The Pro27 takes a lot of gain right away, some tone-correction, then more gain. It never gets near guitar-level after the first stage.

Pro27 also has "overdrive", and not so very different from the TubesCream family (though hardly identical). If you need a specific overdrive, again I would put it in front.

And in practice it is convenient to put effects where you can step on them to turn on/off.

 

[thoglette]

> The question is where to put this

Almost has to go "in front".

absolutely, definitely in front of Rod's preamp. You could put a line-level reverb in the master out/amp in loop.

I'd also leave out the clipping diodes. Unless you love fuzz. In which case you need ANOTHER tone stack between them and the main amp.

To get "good tone" you need to do the following (at least😱) The first tone is in your guitar but that's a very limited form of voicing
[guitar]->[tone]->[clip]->[tone]->[amp]

Given where you are, tonewise (that is, not knowing what you need) pedals are your best friend.

Along with reading. A lot. Start here - What is Tone? Part 1 (gilmourish). And end here - How to voice an amplifier - Rob Robinette

Somewhere in between there's lovely page explaining why bigmuffs work with large valve amps and tubescreamers with solid state combos. But I don't have the URL at hand (sorry)

ps - have a walk through RunOffGroove too - lots of things to try

 

[bbmf]

Thanks for the quick reply.

For now I'm gonna stick to the preamp sound which is good btw. I just wanted to add some additional features and sound options.

One thing I may try is to add 3 way switch and put different type of 'soft' clipping diodes. I will try with 1n4148 which are by design and also will try with some germanium diodes and leds.

Other thing I will try is modifying the bright switch. I haven't yet tested it but i will surely try to play with this.

Thanks for the links, I will check them.