Cheap 4 channels of class d power?

[maggiesnmacs]

Hello everybody. I am helping a friend build up some active 2-ways and need to get him some megawatts to drive his speakers. I know he's on a tight budget so I figured class d is the best bet, and while I have never heard class d, there's enough people on here using them that they can't be that bad lol. And it would give me a chance to see how class d's really size up against class a/b's.

So basically both the drivers are mid to upper 80's db/w so I was thinking somewhere around a minimum of 10w/ch, but more hopefully up to 50w/ch would be nice. The main constraint though is budget. The drivers are going to be 30 dollars a piece so 120 total, plus 80 for minidsp, and whatever box construction costs, and I had already told him I would be shooting for a 200 dollar system which I have already surpassed lol. So I'm hoping to get these 4 channels of power for less than 100 bucks absolute max. Also we are both electrical engineers so we can diy some stuff if necessary.

As I wrote this I realized, that cheap smps 450 watt power supply has been posted on here for a 20 dollar blowout so maybe something like that with some cheap class d amp chips would work well! Let me know what you guys got! 🙂

 

[Jerms]

Cheapest is a TPA3116 board off eBay. Either the "dual chip" or its slightly cheaper cousin. Two of them would cost far less than $30.

You would need a 12-24V power supply to drive them.

J.