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-   -   LM12CL 80Watts Opamp (http://www.diyaudio.com/forums/solid-state/12883-lm12cl-80watts-opamp.html)

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

Hi,
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$).
Dirk

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

lm12
 
Dirk
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

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

Dj BASS AMP
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...
http://home.new.rr.com/trumpetb/audio/010back.jpg
http://home.new.rr.com/trumpetb/audio/010top.jpg
http://home.new.rr.com/trumpetb/audio/010side.jpg
http://www.sample.co.kr/opamp/lm12-1.jpg
http://www.sample.co.kr/opamp/lm12-3.jpg

joensd 25th March 2003 05:31 PM

Quote:

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

Jens

tigerbuger 15th April 2005 05:57 AM

Hi,Dirk:

Did U have LM12 circuit for u diy pow amp?


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