I think i found what i wanted. I will use the schematic for the tone control which i posted but will cut it right after the baxandall and the op-amp. Then i will use a simple parametric eq for more control of the bass.Here s the schema:

http://tinypic.com/2s7cj

Do you think that the values of the capacitors are ok for the parametric eq or i need to make some adjustments and do you think i should add another section below 100hz because the low E of the bass is below 100hz?

If i find a good parametric eq schematic i will use it, but i can't find a good one to use with bass guitar.

Thanks for the reply.

Hello. Now i' m building a bass preamp and i want you to see my idea and give me some suggestions or some advices.

The bass preamp starts with a simple 1 transistor booster- 20db at max level(electro - harmonix clone),
then it goes in a baxandall tone stack(active) for electric bass( http://img.photobucket.com/albums/v467/Mcgiver69/ParametricEqualizer.gif ), but without the parametric bandpass filter. For the op-amp i would use TL072, or OPA....,
then comes the end, which will be separated:
1 balanced(XLR out), 2 main out.

I want to ask, is this tone stack a good solution for the EQ section?
And i thought of a master level mod , a punch mod(which i really don't know what is) or some other proposals for you.

Again, sorry for the english.

Awesome answer(s). Thanks a lot.

Now i know what i wanted.
I will use your tone control version 2 which i think you posted in the end of the topic.

Thanks for the answers.

Any proposals on a good tone stack?

I really like the hiwatt and the baxandall because they have a good mid boost when the knobs are down and of course your tone stack is really great.

Because i don't know much about tone stacks i would like to ask something.  Why your tone stack is passive when there is a op amp? Sorry for the stupid question.

When i cut it after C6 and put it after the ruby, should i power supply the tone stack?

I found it. I think i'll use it but i want to know, can i cut it after the C6 and use it without the op amp?And should i use C6 in this case?

Hi. Thanks a lot. I'm writing from Bulgaria.

Yesterday i saw the Phil/Phatt's hiwatt but now i cant find it.
Can you give me a link or something?

Thanks a lot. You are the first how gives me an exact answer in three days and i posted a lot of topics.

I may use the Hiwatt tone control thanks.
And after the tone stack i doesn't need to boost the signal with transistor?
And is it good to use the tillman preamp in front of ruby?

Hello guys! I want to build a simple practice combo. I have a power amp with lm3886 chip and i want a pre -amp. I want something clean with a tone stack and a little bit of overdrive. Can you suggest me something?

There is another option, but i need some help. I have a ruby amp built and i like it a lot. It has the clean tone and the overdrive, but there is no tone control or tone stack. I have a couple of 250 log pots and 100 log pots and i want to make a fender tone stack and add it but i don't know where. Can you suggest me an active tone stack and tell me where to put it?

I have an idea to make a tillman preamp-->ruby amp + tone control-->lm3886. Is it a good idea? If there is such topic i'm sorry. Oh and sorry for my english.

I want to keep it simple and i have a small amount of money, that's why i want help.
Any opinion on ROG design with fets?