Amplifier kit on eBay

carlmart · 6th January 2012, 07:13 PM

I found this amplifier kit on eBay:

NJW0302G NJW0281 Stereo Power Amplifier Kit for diy Ref MA-9S2 MA-9 | eBay

Has someone built it?

I seem to recall that someone here did buy it and built it, but my search did not get me anywhere.

johnmik · 6th January 2012, 07:44 PM

you're going to need a nice heat sink for mounting the outputs on. I've seen alot of these on Ebay out of China, never tried any yet.
just wanted to make a point about heat sinking on this kind of stuff. It's not included.

My .02
john M

carlmart · 6th January 2012, 08:51 PM

Well, of course I will need a good heatsink for this amp or any power amps that pretends to output more than 30 watts. Cooling an amp heat is not something to be taken lightly, or parts will suffer, such as the output transistors or even the speakers.

These kits never include the large heatsinks, at least those from eBay. If they do they put it quite clearly.

In any case, a valid warning for anyone else who's reading this topic.

6th January 2012, 07:13 PM	#1
carlmart diyAudio Member Join Date: Mar 2001 Location: Brazil	Amplifier kit on eBay I found this amplifier kit on eBay: NJW0302G NJW0281 Stereo Power Amplifier Kit for diy Ref MA-9S2 MA-9 \| eBay Has someone built it? I seem to recall that someone here did buy it and built it, but my search did not get me anywhere.

6th January 2012, 07:44 PM	#2
johnmik diyAudio Member Join Date: Jun 2006 Location: Connecticut	you're going to need a nice heat sink for mounting the outputs on. I've seen alot of these on Ebay out of China, never tried any yet. just wanted to make a point about heat sinking on this kind of stuff. It's not included. My .02 john M __________________ Lots of Kenwood, Pioneer, and Infinity stuff.

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6th January 2012, 08:51 PM	#3
carlmart diyAudio Member Join Date: Mar 2001 Location: Brazil	Well, of course I will need a good heatsink for this amp or any power amps that pretends to output more than 30 watts. Cooling an amp heat is not something to be taken lightly, or parts will suffer, such as the output transistors or even the speakers. These kits never include the large heatsinks, at least those from eBay. If they do they put it quite clearly. In any case, a valid warning for anyone else who's reading this topic.

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