hi everyone...
I got a 18-0-18 120VA toroidal transformer that i want use to build a guitar amp.
I saw the circuit of the fender frontman 25R, i think its easy to build, cause the amp stage is with only a TDA1514 and the pre-section seems easy to understand...
i wanna know, if with my toroidal i can build something with more watt, if there's some schematic that you can suggest me instead the frontman?
i'd like something with a IC in amp stage, and maybe easy to build. :-)
I'm able to do good board, i got everything necessary to print board.
Please nothing like lm3886 or lm1875, i've already done. :-)
There's maybe some fender or marshall schematic amp that i can build?
Thank you...
Marco
 

Here we go with this topic.
I wanna try to figure out how to wire and connect my future ampli+pre (effect) project.
I saw a lot of suggestions and ideas, but i'm not figure out how to wire and do a good project.
Compost of a LM3886 and other other pre and effect to change to seek the right sound (?)...
Everything with homemade PCB.
My goal is to draw a final schematic so i can start to make the pcb and enjoy the project.
In final i wanna have a stable power sections, a stable ampli and the possibility to change the effect that i wanna try(+15 -15 supply) .
So, in my mind, a stable PCB for the supply for the amp board(+35, -35), including also a little circuit to generate the supply for the preampli (+15, -15), a stable PCB for the LM3886, and in the end  the effects board that i'm going to change until i try all the possible effect in this world!!!!
First of all, i read some topic in here, from ESP Audio pages forum and some i check the Carlo Filipe suggestion.
So...
Just a few firsts suggestions that i need to know to draw this schematic and maybe posted for the people that is interested:

1. for the LM3886 is better to use the carlos felipe design (two bridge, some resistor and some small caps) o is enough the ESP site suggestion in the famous 27 project with only one brighe and only two caps? are 4700uF caps enough?
2.   I saw in the ESP pages that is used a little "2 diode - 1 resistor - 1 cap" section from the Circuit GND to The Earth plug in the chassis. I have to use it?
3. About the Output from the ampli board to the speaker. i have to take the GND throw a 0,1Ohm 5W resistor or i can plug it directly to the center GND?

Here the firsts questions, as soon someone answer me back i'm going to draw right the way the sch to understand better what i'm talking about...
I'm thinking that a lot of people, looking from this pages, remain a little bit confused about this things, a lot of different SCH over around and a lot of suggestion, and in the end the problems remain, and i know for sure, one of the easy and cheap project can be the LM3886...
I know that there is the ground section in the beghinning of  the site, but i wanna try to do something right for what i have in my mind!
Thank for everyone interested!!!

MArco

hi everyone...

I'm going to build a lm3886 amp, homemade PCB.
I've already done one for the PC system and i have to said that sound really good.
I saw that a lot of people use the chipamp.com kit.
So i wanna use, for the project, all the definitions that they suggest for the kit, like the components value. They are incredible clean and good about the construction and everything else!!!
But my question is if that schematic, especially the values of the components, is the better choise for a guitar-amp.
i've read some post where is said to change some resistor value but i didn't understand well!!!
I don't have also problem to change the schematic, because i repeat, is homemade PCB.

Another quick question, about the preamp-section. maybe more important.

For now i need only an EASY and VERY CLEAN circuit, just said, only to test the amp.
I read a lot of tread "the better preamp for the gainclone" but, i know, there's no better, is only "which sound are you looking for" question, but i repeat, i need only an easy circuit to test the amp, maybe without extra noise and effects, like disorsion and so on!
I saw a lot of suggestion in here, but i think is not what i'm looking for.

So, any suggestions?

P.S: sorry for my english, i'm italian... i wrote as better as i could!!!

Thankyou to everyone answering me back!!!

Marco