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Old 25th March 2003, 06:12 AM   #1
corbato is offline corbato  India
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Default 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.
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Old 25th March 2003, 06:51 AM   #2
Dirk is offline Dirk  Belgium
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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
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Old 25th March 2003, 12:40 PM   #3
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Default you can bridge the single chip amps

National Semi has an article on bridging the LM3886.
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Old 25th March 2003, 12:46 PM   #4
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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...
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Old 25th March 2003, 03:50 PM   #5
corbato is offline corbato  India
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Default 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 Enjoy your posts and pics a lot.
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Old 25th March 2003, 05:20 PM   #6
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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...
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Old 25th March 2003, 05:31 PM   #7
joensd is offline joensd  Germany
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Quote:
*= u be need a big heatsink !
You obiously mean a bigger one than the cute one shown!?

Jens
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Old 15th April 2005, 05:57 AM   #8
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Hi,Dirk:

Did U have LM12 circuit for u diy pow amp?
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