upgrade analog summing

[yogev-sam]

hi i have the d&r 8000 console and i really like to upgrade her summing
what is the best summing card for my needs ?
how much it will cost me ?
im going to mix about 24 channels{ 8 analog groups from 001 8 adat from pt
and another 8 from adat sync to pt }
to this audio setup you can have another 8 fx return and 4 channels from module
so its an 36 channels in mix
thanks
if you need more info about the console please let me know

[jeffwuollet]

If your console uses IC's, start with the components on the modules you have now. Are you using Burr Brown IC's? If not, shame on you. If you like how your input channels sound, leave them be, but if you're replacing the op-amps in your summing section, start with Burr Brown OPA2134's. In a D&R console, I'd imagine that the IC's were in sockets as opposed to soldered to the board, but if they're soldered, God help you. It's a pain in the butt to desolder each contact and if you do a poor job, it wouldn't be worth replacing them because it'd compromise the circutboard. Anyway's, go to www.ti.com and enter OPA2134 onto Keyword. You can find the right one(Pin or not) and order free samples to try some out. And Texas instruments has overnight delivery and it's completely FREE!

The op-amps most consoles come with are usually Signetics or the like, but Burr Browns will lower your noise floor dramatically while the faster slew rate will add more transparence to the sound(Which is what you want in a Summing section).

Just make sure that your power supply can give all the juice the burr browns require. My console was mean't to run at +/-15V, but now I've gone to +/-18 just to make up for it. It adds stability and my headroon was drastically improved. No figures yet, but I can't hear a bit of clipping with the gain knob at 10. Also realize that if you have Clip LED's they won't be accurate anymore. My clip Leds flash whenever the signal gets to +6db, but LEDs just go on and off with no in-between. +6db won't matter after a Burr Brown makeover.

[yogev-sam]

thanks alot
its all about headroom for me
i "like" my input channel {its not neve or ssl you know }
i going to chack OPA2134
thanks againe
yogev
www.studiolool.up.co.il