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corbato 25th March 2003 06:12 AM

LM12CL 80Watts Opamp
Has anybody tried this IC as an audio amp? Date Sheet Link

I looking at them as the amp for driving the lower half in my proposed Bi-amp system. The upper half will be driven by an UL 6V6 PP. XO will be Steve Bench 6DJ8 design.

I have already completed the 6V6 and find the output power amazing. My earlier plan was to use LM3875 to drive the bass, however after listening to the 6V6 PP, I am inclined to go for a higher power amp instead. I am looking for a cheap solution.

Thanks is advance.

Dirk 25th March 2003 06:51 AM

I used the LM12CLK as a power amp several years ago (standard application note) without any problem. While I was able to get it real cheap, the LM12 usually is very expensive (I saw them priced at 50$).

jackinnj 25th March 2003 12:40 PM

you can bridge the single chip amps
National Semi has an article on bridging the LM3886.

Dj BASS AMP 25th March 2003 12:46 PM

in israel the LM12 is cost a 20$
and u can bridge 2 of the LM and get 240W !i can give u a circuit if u want...

corbato 25th March 2003 03:50 PM

Thanks for confirming its usabilty as a power-amp without any hitch, but are you sure about that cost. In India my supplier has confirmed at approx US$18

LM3875 is an option. Best part is I get the chip free ;)

While I'd love to have your bridged schema, my requirement at the moment is rather modest:) But let me commend you for keeping the flame alive at this forum regarding higher powered amps :nod: Enjoy your posts and pics a lot.

Dj BASS AMP 25th March 2003 05:20 PM

2 Attachment(s)
Hii corbato...
if u want to connect to 4 ohm speakers u will get high power*
*= u be need a big heatsink !
Simple, Small and High power Amplifier...

joensd 25th March 2003 05:31 PM


*= u be need a big heatsink !
You obiously mean a bigger one than the cute one shown!?:scratch: :redhot:


tigerbuger 15th April 2005 05:57 AM


Did U have LM12 circuit for u diy pow amp?

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