The Amp Garage

Thanks Pingone.
You are right In my schematic I 've made a few mistakes. Your tone stack is ok.

On the schematic there are two notes in Italian.
Better to translate.

- Top one on the left: R6 unknown value ( forgot to measure it)

- Lower one on the left: this is the TS as it appears from the photos

Preview of the schematic . Pls take note that is not still verified. Probably something is missing in the drawing. But the pre and loop sections are reasonably correct. On the pdf I've inserted the drawing of Both the Tone stacks. The original Ultraphonix one , and the one that I've seen on the pict...

The green wire is GND

Hello Guys. I have seen there are no pics of the inner of a Suhr Bella (no reverb) I own a few. If you tell me how to post a zip file with them I will do it. Yes, it resembles a lot an Ultraphonix. But still I have doubts on the tonestack. Apparently it seems to be a normal fender topology with ( al...

Hello all. First of all, I don't know if it's allowed or not. Not a problem if this post is going to be deleted. I 'm not connected in any way with the builder i will mention. In this case, I'm just an happy customer and have not direct connection with the builder. I was searching for a dumble sound...

Your build is among the best ever seen here. Great attention to the details and excellent craftsmanship. Congrats.
I happen to need the same kind of amplifier as a grab and go thing , so if you are willing to give availability of that pcb, I would be in....
Thanks

Paolo

do yourself a favour and build a simple tool, by using a 100nF 630V capacitor. Solder a wire to one of the cap's lead, and stick it to ground of the amp. Get yourself something like a chopstick, and fix the capacitor at the chopstick with electrical tape . Do it so that the remaining lead of the cap...

I would suggest to look also at the carmen ghia from dr z. You can get very good cleans from it and this schematic will comply with your requirements in term of preamp stages. Furthermore, with just a 3 position switch you can dial different tone behaviours, that will give a different signature to t...

Furthermore, I tend to use in some cases ( mostly where I desire to have a dry bass and a chimey high with very fine detail, wirings made in pure silver cable. From https://www.aikenamps.com/index.php/technical-q-a Q: Is there any advantage to using solder with a 2% silver content? A: Yes. Silver s...

resistors: Dale rn65 (new) , Allen Bradley (NOS) , Royal ohm, Xicon. I've tried also old holco stuff and they are really fine. But almost impossible to source. Capacitors: 715, mallory 150, Xicon MPP; Arcotronics mkp. sometimes also other stuff, like wima or old siemens I have in stock since a long ...

My personal point of view is not to stick with a certain brand or model of a capacitor, but to test different options in the most critical parts of an amp. In this way I usually stick with 3 or 4 brands of capacitors, 2 or 3 types of signal resistors, and just a couple of electrolytic caps brand. In...

I would like to buy one. But unfortunately this is not the time for acquiring anything. On the other side I've got a bunch of transformers, tubes, potentiometers in my drawers.....

Trying to revive the subject. Any more info on this jewel?
Thanks
Paolo

No doubt on that IC. I have to tell you the truth, all my D Style amps, started from a "certified" design, and at the very end are modified in order to meet my tastes, so actually my own amps are not faithful repros of any kind of typical design. The mods sometimes are heavy, while in other occasion...