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Old 10th April 2002, 01:31 PM   #1
griff is offline griff  Australia
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Default DIY Sub Amp

any thoughts? schematics? it just seems insane to spend $300 AUD on an ALTRONICS 150WATT into 4Ohm Sub amp when they SEEM so simple to build.
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Old 18th April 2002, 06:50 AM   #2
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Hi Griff,
Have a look at the ESP project 68, looks good, easy to build and to date all of Rods amps I have built work very well.

DieterD
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Old 18th April 2002, 07:35 AM   #3
griff is offline griff  Australia
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have u got a link to this amp?
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Old 18th April 2002, 07:41 AM   #4
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Smile Here u go

http://sound.westhost.com/project68.htm

/ Axel
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Old 18th April 2002, 12:01 PM   #5
griff is offline griff  Australia
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thanks, ill look into it
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Old 18th April 2002, 01:11 PM   #6
cjunk is offline cjunk  Italy
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In the application schematics for
the TDA7294 there is one suitable for
a sub amp...

http://www.st.com/stonline/books/pdf/docs/1057.pdf

It is the IC upon which the nOhr Le Amp is based.
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Old 30th April 2002, 01:12 PM   #7
ssanmor is offline ssanmor  Spain
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Why don't you try a 4xLM3886 setup? You can get about 250w rms if done properly. Search this forum and you will get ideas about it.
I have recently build one for my car and works fine. (apart from the headaches that the switching power supply gave me)

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Old 30th April 2002, 01:34 PM   #8
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There is a national application note BPA-200 available from www.national.com that would be good for this purpose assuming that the sub doesnt dip below about 4 ohms. [url]http://www.national.com/appinfo/audio/files/BPA-200_Application_Note.pdf
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