Soundcraft 400B recap help ..!

[Darenzo]

Hey folks ...
I am in the process of rebuilding my 400b and need some advice on capacitor
selection for the input modules.The plan is not to change the opamps at this stage but to replace/upgrade the caps and maybe the transistors in the mic-pre.I have read everything i can find on GS and the net about this but i could do with a shopping list from someone who has experience in this so i get the values right and dont blow my budget or my desk lol



Oh The power supply has been rebuilt with new caps/regs etc already.



Thanks

[Darenzo]

Any one ???

[Darenzo]

Bump !

[Sean Sullivan]

The longest life and lowest ESR capacitors available right now are the Panasonic FR. And they are small in size.

[Darenzo]

Thanks for the reply..
I was looking for some information on value selection any ideas or just keep them stock ??

[Sean Sullivan]

The person to talk to about that sort of thing is Jim Williams at Audio Upgrades.

[Fletcher]

Frankly you should talk to Jim not only about recapping the thing... [the stock values are written on the caps - and if you have the manual their values will be included with the schematics]... but also about redoing the entire internal grounding scheme of the thing as that's its weakest link.

Thanks for posting a picture... it took me right back to a bar room I used to hang out in during the 80's... they had one as the front of house desk at that bar... over the course of a few nights [and fueled by some illicit substances] we rewired the ground scheme of the desk... made a VERY noticeable improvement [and the best part was that we stole the copper bar we used to redo the ground from the bar where I was the house engineer... I spent more time in the other bar!!].

Peace

[Darenzo]

Hey guys..
I was already going to send my master strip to Jim Williams but in the mean time going to recap the channel strips ..so i was looking for some info on what caps people upgrade and where (changing values/bypass caps etc) and transistors in the mic pre etc...


Any body ????

[AnthonyRochester]

I'm not an expert, but I did recap a Soundcraft Series 600 a little while ago. I did all of the electrolytics on the input modules and master section. I just remember reading that the replacement caps should be a higher value or the same value, but not lower.

[Darenzo]

bump....!! Any idea what's involved in upgrading the master strip??

[Darenzo]

Ok can anybody answer me this ..??
are the 200b input modules the same as the 400b ??

Thanks

[dandeurloo]

Jim Williams is amazing at this stuff! I had him mod my little side car, its a soundcraft delta. That thing is crazy good now. I actually just mixed a metal record on it and some outboard. Pretty killer. I would send Jim a few channels as well and see how that sound when they come back.