closet find

[tmbg]

I've had this thing for ages, and I just re-discovered it with a fresh DIY mindset and the possibilities bowled me over!

only seven mic inputs! wtf... I bet I can bore out that last line and make that an XLR in.

I dunno what I'd do with it... I dont really need a mixer, an 8 channel green + 8 channel SSL would be freakin awesome. [/img]

 

[tmbg]

wow this thing has an ENORMOUS power supply, and a whole spring reverb tank in it! The mixer section is mostly comprised of 4741's, with a couple 5532s and a couple 4558's.

It's stuffed full of the big rectangular green pillow looking caps. Those are poly something aren't they. Are they polystyrene?

These beasties:

 

[Svart]

usually those are polyester or polypro, i would guess polyester.

is that a LM 4741 or njm4741?

i would bet a NJM4741

quad opamp
slew rate of 1.6v/us ?

some things in the datasheet lead me to believe that it might be prime for replacement.

pin compatable with most quad opamps.

the same fate for the 4558s.

i think the 5532s speak for themselves.. :green:

 

[tmbg]

they're NEC C4741's. I'm guessing that's just a quad 741 - grody.

Unless someone can come up with a convincing argument not to, this thing is gonna get completely gutted in about ten minutes. The caps, pots, and jacks are all going in something else, perhaps something that will go back in this thing's chassis

 

[Svart]

hmm not much info on those ICs. it would likely be in your best interest to put efforts into other things than to try to polish a turd into a diamond.. :green:

is that case rectagular? can't tell from the pic. maybe a housing for green pres?

EDIT: step over to the brewery and check out a quick idea i laid down the other day and let me have your opinion :thumb:

 

[tmbg]

yeah it's just a big ol' 6 space (I think) rack box, 6" deep or so

 

[NewYorkDave]

Ugh. Don't bother with trying to build something cool out of that thing. Since it appears to be in clean shape, sell it to a coffeehouse or a guitar/vocal duo for use as a small PA. It works just fine for that.

--Dave, who repaired his share of BiAmp mixpaks in his days as a repair tech :wink:

 

[tmbg]

by 'out of this thing', I just meant the chassis and the XLR connectors and this big pile of polyester caps I rescued from inside. I'm not gonna try to upgrade the guts, just rip them out and make it an 8 channel green + SSL.

 

[PRR]

> this thing has an ENORMOUS power supply

Dood.... , this thing is a POWERED MIXER. It drives speakers at club-level. And mixes, and EQs, and spring-verbs, ALL-IN-ONE!!!! Totally cool for, as Dave says, a coffeehouse gig. Or my brother, who wants to take his neo-klezmer act on the road, to old-folk homes. It may not be crystal, but it ain't crap. Helluvalot better than a Crate power-mixer I once met.

To kill it for some oxidized XLRs and a box seems a sin.

 

[tmbg]

I havent powered it up to check, but I seem to remember sticking in a closet because the power amp was blown up