Hi' I have been looking in the alesis 3630 meta on the mods I bought one of these and really liked the sound then bought another and wasn't quite as good but still alright. I bought them both to mod. I took them both apart and one the one I liked already had the tl084 chips installed but nothing else done to it. The other one just had cheapys go figure. Here is my questions.
It says if the middle side chain quad is a LM324 replace it but it doesn't say what to replace it with. The other op amps it says replace with tl084, tlo74 or MC33079 or similar. Would I use one of these chips for the LM324 or would I use something different?
It says a if there ad a 1uf timing cap to the that 2252 chips check the applications sheet. I looked on the data sheet from the that corp hoping to gian more knowledge on this but it didn't really help me. What type of 1uf cap would I use a ceramic or film and how would I add it? Would I just solder it to 2 of the pins? or would it go inline before or after one of the pins and if so would I remove the trace there?
Is there anything to bias after these mods? There is a couple of pots on the board I'm guessing are for biasing???/ If so where would I take the readings and what should it read?
Another problem is I keep looking up trying to find the sockets for the quad opamps on digikey and just can't find them. Can anybody help me here? Keywords, where to look, or a parts number?
Thanks for taking the time to read this. I'm not a complete noob when it comes to electronics just not full of knowledge either. Any answers would be helpful and if anyone else has any tips or tricks for modding one of these things that would help to.
It says if the middle side chain quad is a LM324 replace it but it doesn't say what to replace it with. The other op amps it says replace with tl084, tlo74 or MC33079 or similar. Would I use one of these chips for the LM324 or would I use something different?
It says a if there ad a 1uf timing cap to the that 2252 chips check the applications sheet. I looked on the data sheet from the that corp hoping to gian more knowledge on this but it didn't really help me. What type of 1uf cap would I use a ceramic or film and how would I add it? Would I just solder it to 2 of the pins? or would it go inline before or after one of the pins and if so would I remove the trace there?
Is there anything to bias after these mods? There is a couple of pots on the board I'm guessing are for biasing???/ If so where would I take the readings and what should it read?
Another problem is I keep looking up trying to find the sockets for the quad opamps on digikey and just can't find them. Can anybody help me here? Keywords, where to look, or a parts number?
Thanks for taking the time to read this. I'm not a complete noob when it comes to electronics just not full of knowledge either. Any answers would be helpful and if anyone else has any tips or tricks for modding one of these things that would help to.