Large studio monitor clone take two

[Amnes]

Ian, that little x/o looks very simple yet exactly what I need. Might go ahead and try it.

Bstleve, LME49860 is dual, I need single opamp. Funny thing is I bought 10pcs of LME dual opamp by mistake... I must get the proper chips after all. Either way I'm so happy with where these clones have gotten me. Great experience.

[4313B]

If you care to upgrate discrete might be the way to go.

The problem with the chips is they can generally not be biased sufficiently into class A without overheating.

You can try class A biasing with a pull down resister on the output from the negative rail just for grins just be careful of overall power dissipation.

Some of the best big hi end names used this trick to up the hifi Uber of their solid state offerings

Here is a ready made discrete pcb kit from a guy who previously worked for Mark Levisnon.

The actual circuit you buy with the kit. It is not unlike the buffers used in the Bryston and the DX1

Scroll down and there is a xover kit. I have bought the kit but not had time to put it into service on my diy 4345

http://www.ska-audio.com/

Have you tried any of their other items?

[yggdrasil]

I have built 2 amps with GB150D. They sound good.

Only real issue was that they were allergic to 2245's (output's fried at just a little pressure). Did work flawlessly with the Sovereign's.

[4343]

...
Bstleve, LME49860 is dual, I need single opamp. Funny thing is I bought 10pcs of LME dual opamp by mistake... I must get the proper chips after all. Either way I'm so happy with where these clones have gotten me. Great experience.

Single version is LME49870.

[Amnes]

Can't find dip8.

LME49710 looks good too tho.

[4343]

Can't find dip8.

LME49710 looks good too tho.

You can get adapter boards, ebay has them, one is called a browndog adapter.

I just solder them into DIP sockets. Solder some wire wrap wire into the sockets of the machined pins. Then carefully solder to the tiny little legs.

I just ordered up some samples of the dual and single.