Hello friends! The circuit I uploaded earlier is now verified. Everything is working correctly. I'm sharing a video of me testing it (excuse me, I'm not a bassist). I tested it with a power stage using a TPA3118 chip (one of those Chinese boards). I used a Crate KX-50 speaker (a keyboard amplifier)....

Hello! I'm attaching the Eagle files for the BAJA Orange AD200B MKii. In the coming days, I'm going to assemble it and see how it performs along with a Class D power stage. Thanks, Bajaman! Edit: Added pcb board for the EQ Remember to place a wire between "AEQ to TP1" and "DEEQ to TP2...

Hello! I'm attaching my version of this circuit. I separated the tone stack on a separate board to make assembly easier. I've included the Eagle files in case you want to edit it. I should mention that it's not verified, and I made some modifications to the original circuit, replacing the JFET inpu...

Hello! I'm attaching my version of this circuit. I separated the tone stack on a separate board to make assembly easier. I've included the Eagle files in case you want to edit it. I should mention that it's not verified, and I made some modifications to the original circuit, replacing the JFET input...

Hello! My name is Facundo, I'm from Argentina, and it's a bit challenging to get FET transistors here. It's even harder to find them at a good price and in original condition. That's why I'm very interested in this topology using op-amps, which are affordable and available almost anywhere. Today, I ...

well, here are my files for this circuit, in the rar you can find schematic, layout and pcb in pdf format ready to etch. Also have the eagle files to modify something if you want.
Greetings form Argentina

i'm making a pcb in base of the schematic on the first pages, that schematic is working correctly, right?

its just t for "Terminal" nothing relevant, in eagle you have the simple +9v and the +9v(T) when you made the schematic. If you choose the +9v(T), in the board design , eagle creates a pad with that terminal. Sorry for the english, in spanish: es solo un terminal, nada importante, en eagle...

i have lots of eagle files , can i share them here?

excelent. Here is my version of this circuit, without the spst , made with Eagle, in the rar you have pdf schematic, pdf layout and pdf pcb ready to print.

Here is my pcb of this circuit, in the rar attached to this comment i put: Layout, Schematic and PCB ready for transfer in pdf format, and also attached the eagle files if someone want to modify the circuit

sorry, i've confused this circuit with another one, let me work on it, tomorrow i will upload te files

sorry for te confussion

Hi, i made this layout in eagle, hope you found it useful.

its layout, pcb and schematic in pdf

wich is the function of the dpdt switch in this circuit?

if i use 2n3904 instead of the 2n5088 i'll have a volume drop, isnt?
in that case, could i use a booster to up the volume?

this sounds awesome! can you post the power supply ?

here is a demo of my uploaded schematic

http://goear.com/listen/4380f61/preamp- ... rat-y-od-a

Stratocaster->digitech rp500 (just a tube screamer emulation)->preamp->tda7294 power amp-> 12'' speaker-> shure 57 imitation

built this pre amp and made the pdf files so you can too. In the layout include transistors as "J201" but actually built with bf245 MPF102 or do not remember. (The J201 had too much gain and the preamp sounded too dirty) I used this circuit with a power-based 100w tda7294 and sounds excell...

hi, i've found a schematic based on slo100 made whit 2n7000's

i dont know how it sounds, but next week i will build it

here is the schematic, layout, pcb and eagle files:

thats right, and i can use it to play in little shows ... and 150W is priceless jajajajjaa