subwoofer amplifier

[panos1]

hi,
i'm panos from greece and this is my first post here....
i'm trying to make a pa active subwoofer....
i bought the woofer(b&c 18ps76) and now my problem is the amplifier....
i want to make a class d power amp but i cant find a schematic....
i'm thinking of something with irs2092-buffer and 4+ mosfets.....
i believe that 800 watt power amp would be ok for 600 watt sub...do you agree?
please can you help me find a schematic??

 

[airwavesystem]

refer to IR demo,there are many complete design,
if you are a new guy,First study how it work and next to design by yourself!
http://www.diyaudio.com/forums/clas...ass-d-amplifier-lets-make-class-d-easier.html

 

[panos1]

thank you for your reply.i will take a look at ir demo....has anyone built any aud amp?i saw aud1000 and i believe that's what i'm looking for but is it a good circuit?

 

[panos1]

hi,
i decide to buy this kit DIY Kit of L20D 200W 250W 200W 250W 8ohm IRS2092 IRFB4020PBF Class D | eBay
and i want to brige the two boards in order to achieve 700watt 8 ohms....
can you help me with a circuit?
how can i bridge them?

 

[nigelwright7557]

thank you for your reply.i will take a look at ir demo....has anyone built any aud amp?i saw aud1000 and i believe that's what i'm looking for but is it a good circuit?

I built a 1000watt IRS2092 amplifier and it sounds very good.

If you are a beginner I would recommend buying one ready built.
It took me 3 pcb revisions before I got a reliable working amplifier.
The 2092 is fussy about decoupling and layout.
The 2092 is also fussy about its over current protect circuit, I found with the basic app note circuit I kept getting resets on high powers.

 

[panos1]

i,m thinking of builting two chanel of ucd 25-1200 watt power amplifier with +-57volt which wiil give me 400 watt 4 ohm....
then i wiil bridge them and i will have 800 watt 8 at 8 ohm load...what's your opinion about this?