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Chip Amps Amplifiers based on integrated circuits

mono power amp using LM4780
mono power amp using LM4780
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Old 6th February 2005, 03:57 PM   #1
hypnotize is offline hypnotize  Israel
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Default mono power amp using LM4780

Hi
I need to constract a high power mono power amp for my bass guitar (I already have a pre-amp). I need at least 250-300W because I have a 400W 4 Ohm bass driver and I want to kick it...
My main idea is to use LM4780 with parallel connection, but I need two chips to get high power. How can I connect two LM4780 in parallel without any current problems?

By the way, I have plenty of supply voltage, approx. +-100V 10A.
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Old 6th February 2005, 04:04 PM   #2
pinkmouse is offline pinkmouse  Europe
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mono power amp using LM4780
You have far too much supply voltage! The LM4780 is rated as +42v,-42v rails maximum. Sorry...
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Old 6th February 2005, 04:28 PM   #3
hypnotize is offline hypnotize  Israel
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You are right, I ment I have plenty of input power, regulated.
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Old 7th February 2005, 07:25 AM   #4
tlmadsen is offline tlmadsen  Denmark
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Default paralleing

See my reply about paralleling in :

http://www.diyaudio.com/forums/showt...threadid=30570

Have fun

Thomas
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Old 7th February 2005, 07:50 AM   #5
Upupa Epops is offline Upupa Epops  Czech Republic
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With two pieces of LM 4780, connected in parallel/bridge configuration, you can get app. 200-220 W / 4 Ohm, not more ( for safety operation ).
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