LM 4780 Noob question

Dominick22 · 30th December 2005, 05:47 AM

So, I am nearly complete with my LM 4780 chip amp, but this is my first project! My biggest intention is simply to learn.

Once the chip amp/rectifiers are complete...can I just connect an input signal (IE: cd player) and and output signal (IE: speaker terminals), or are there other components I am missing?

Do I need a DAC or other component, or will this basic set up produce an auduble result by itself??

Thanks to all...The members on this site are aways a help.

Dominick in New Jersey

sangram · 30th December 2005, 06:56 AM

Pretty much plug and play. You will need a volume control obviously...

But yes, once you've completed both the boards, connected them together, and add a small volume control in line with the inputs, you're ready to rock!

jaudio · 30th December 2005, 03:09 PM

Quote:

Originally posted by Dominick22
So, I am nearly complete with my LM 4780 chip amp, but this is my first project! My biggest intention is simply to learn.

Once the chip amp/rectifiers are complete...can I just connect an input signal (IE: cd player) and and output signal (IE: speaker terminals), or are there other components I am missing?

1 Check dc offset with a multimeter

2 If dc offset is less than around 50mv,hook up a speaker that you dont really care about(just in case)

After that you are good to go.

As sangram said "add a small volume control in line with the inputs, you're ready to rock!"

30th December 2005, 05:47 AM	#1
Dominick22 diyAudio Member Join Date: Aug 2005	LM 4780 Noob question So, I am nearly complete with my LM 4780 chip amp, but this is my first project! My biggest intention is simply to learn. Once the chip amp/rectifiers are complete...can I just connect an input signal (IE: cd player) and and output signal (IE: speaker terminals), or are there other components I am missing? Do I need a DAC or other component, or will this basic set up produce an auduble result by itself?? Thanks to all...The members on this site are aways a help. Dominick in New Jersey __________________ A real amateur enthusiast!

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30th December 2005, 06:56 AM	#2
sangram diyAudio Member Join Date: Sep 2002 Location: India	Pretty much plug and play. You will need a volume control obviously... But yes, once you've completed both the boards, connected them together, and add a small volume control in line with the inputs, you're ready to rock!

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