DIY 1500 watt power amp class B

[dave1490]

Believe it or not, the design can be pushed even further. You will need to add more power transistors and upgrade the power supply though. Supply voltages of up to ±150V can be used without changing anything other than increasing the number of output devices. Although the MJ15024/5 are rated at 250V, they will take more because the base is tied to the emitter with a very low resistance. 1200W into 8 ohms is quite possible, with around 2kW into 4 ohms (or 4kW / 8 ohms in BTL configuration). I suggest that the number of output devices be increased by at least 25% - a total of 13 devices for each supply rail (26 in total, including drivers


http://sound.westhost.com/project117.htm

 

[WmAx]

Believe it or not, the design can be pushed even further. You will need to add more power transistors and upgrade the power supply though. Supply voltages of up to ±150V can be used without changing anything other than increasing the number of output devices. Although the MJ15024/5 are rated at 250V, they will take more because the base is tied to the emitter with a very low resistance. 1200W into 8 ohms is quite possible, with around 2kW into 4 ohms (or 4kW / 8 ohms in BTL configuration). I suggest that the number of output devices be increased by at least 25% - a total of 13 devices for each supply rail (26 in total, including drivers


http://sound.westhost.com/project117.htm

Interesting. Though this is for hardcore DIYers whom do it just to do it.

Behringer EP2500 bridged will put 2000+ watts into 4 ohms. $350 USD. You can't even begin to buy the raw parts to build one for that much.

-Chris

 

[dave1490]

Interesting. Though this is for hardcore DIYers whom do it just to do it.

Behringer EP2500 bridged will put 2000+ watts into 4 ohms. $350 USD. You can't even begin to buy the raw parts to build one for that much.

-Chris

ya that,s the first thing i thought when i saw the 8 10000uf cap,s needed per side and the 150v transformer.but it still gives people insight on what it takes to build a real amp.offcourse if this was class a that would be much more costly.