Simple first-build to power two 600w 4ohm Subwoofer - diyAudio
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Old 11th December 2011, 02:57 AM   #1
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Default Simple first-build to power two 600w 4ohm Subwoofer

Price, ease of build and power trump sound quality (in that order). Looking to power just the subs for under $100. Any suggestions, places to get parts, first time guides are welcome!
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Old 14th December 2011, 03:51 PM   #2
Alfonz is offline Alfonz  Bulgaria
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Under $100?!
Do you mean power amp or building 2x SW?
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Old 14th December 2011, 04:12 PM   #3
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There is no such thing as a simple 600W 4Ohm amp suitable for a first time builder.
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Old 14th December 2011, 04:26 PM   #4
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If it makes a difference, quality really isn't an issue and 20-100hz is all I need. If not, where do you suggest I start?
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Old 14th December 2011, 04:45 PM   #5
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Your budget.

Seriously, caseworks and heatsinks alone will cost more than your cost limits. Add in a huge transformer, PSU caps, and then the components and PCB and you'll be looking at $250 minimum.

Then double this, as you're likely to blow it up a few times during construction if you've never worked with anything that high powered, the risk to yourself with the high voltage rails required, and then add another $250, (minimum) for the test equipment you realise that you need to get it working.

So, what can you do?

Buy a used PA amp - can be cheaper than you'd think.

Get some tried and tested Class D modules that you can just screw together and case up. Will cost more, but will give you the satisfaction of doing it yourself.

Start off building a 30W chip amp, then progress onto something using discreet components like a Symasym. Once that's up and running well, build a bigger amp, something like the new diyAudio class AB amp, at 150W you're getting there. Then start thinking about 600W...
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Old 14th December 2011, 11:47 PM   #6
pski is offline pski  United States
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Quote:
Originally Posted by TrevorCook View Post
If it makes a difference, quality really isn't an issue and 20-100hz is all I need. If not, where do you suggest I start?
+1 from this thread

To start, you need more money. Check out the plate amps at Madisound.
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