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mlaroche 9th December 2006 07:11 PM

Need help fo 100w+per channel stereo chip amp

I'm a newbie when it comes the real power amplification. I've build simple speakers and headphones amps in the past but it's my first attempt to build an amp.

I'm looking for a stereo amp that can produce 100w per channel at 4 ohms. Based on my search on this site, I will need a parallel configuration to achieve these results. Based on what I saw, it seems that there are no kits available so I'll have to get the parts by myself. I would need help to figure all the parts I'll need to get this little amp working.

You help is really appreciated.


davidlzimmer 9th December 2006 07:40 PM

This is as good as it gets in my opinion. Price, ease and quality.

mlaroche 9th December 2006 07:48 PM

so I will need 4 of these boards to run 2 of them in parallel for 2 channels ?


davidlzimmer 9th December 2006 08:30 PM

NO! Just one kit. Just the Parallel LM4780 Kit.

You will have to provide the transformer, potentiometer, case and connectors though.

jimbo1968 9th December 2006 08:31 PM

one 4780 kit will give you about 100wpc

mlaroche 9th December 2006 08:39 PM

which toroidal transfo would you guys recommend for this kind of amp at 4ohms.


davidlzimmer 9th December 2006 09:32 PM

You can by with this
But I think, most would recommend this

I think ideal would be 22v at 200 VA.

I use two 190VA EI types (24V) but have used the 160VA Toroid on the link on several occasions with no apparent lack of quality. Hope some others give suggestions.

PS If you order from PE, you might as well tell them to send you a catalog! ;)

mlaroche 10th December 2006 12:34 AM

guess it's too much of a project for someone with limited experience.


davidlzimmer 10th December 2006 12:43 AM

The kit is very simple to build. Get a friend to help you with the transformer hook up.

The results are very rewarding. You can't be totally in the dark if you already knew what you wanted.

But you have to be the judge. Best wishes!

mlaroche 10th December 2006 12:51 AM

I'll try to get someone with more experience to help me I guess. Quality of these amps are way better than cheap electronic stores.

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