Been out of the sub game for a while and need some advice. I have a pair of subs that I would like to power with something around 800w per side. 8 ohm each so probably paralleled do a 4 ohm load.
What options do you recommend? Plate amp, diy, prosound?
Cheers.
What options do you recommend? Plate amp, diy, prosound?
Cheers.
Dear Beau,
That's exactly the power range where a switching amplifier becomes advantageous (and sometimes necessary), so I would go for a full-bridge class D amplifier if I were you.
800W into 4 ohms requires approximately 60VRMS, so your (switching) amp needs to have a DC power supply of at least 80 V. Do make sure that the resulting load currents are also well supported by the design (supply, devices, PCB). However, since it is a sub-woofer application, you may choose a lower switching frequency when compared to full-range class D (say 20kHz-100kHz). This would also help improve the efficiency, as the conduction losses would be fairly high.
All the best.
That's exactly the power range where a switching amplifier becomes advantageous (and sometimes necessary), so I would go for a full-bridge class D amplifier if I were you.
800W into 4 ohms requires approximately 60VRMS, so your (switching) amp needs to have a DC power supply of at least 80 V. Do make sure that the resulting load currents are also well supported by the design (supply, devices, PCB). However, since it is a sub-woofer application, you may choose a lower switching frequency when compared to full-range class D (say 20kHz-100kHz). This would also help improve the efficiency, as the conduction losses would be fairly high.
All the best.
Sorry for the mistake above, it's 800W into 8 ohms, needing a (min) 120V full-bridge amplifier. Thanks KaffiMann for having got that.