Choosing the correct PSU for a Boss AR4000D Amplifier

[kenny030102]

Which PC Power supply would I need to run a Boss AR4000D which is connected to a Boss Audio P156DVC Phantom 15" Subwoofer?
If there are any improvements that could be made just let me know

 

[kanewolf]

If you look at the manual for the amp -- https://www.bossaudio.com/manual/ARMOR_D_EN_UM.PDF In a car, it recommends connecting to the battery with a large capacitor. Because the transient amps used by the amp are very high. Getting a DC power supply to handle the current used by an auto amp is usually impractical. The fuses included with the amp are 120amps. You will not find that in a PC power supply.

 

[kenny030102]

If you look at the manual for the amp -- https://www.bossaudio.com/manual/ARMOR_D_EN_UM.PDF In a car, it recommends connecting to the battery with a large capacitor. Because the transient amps used by the amp are very high. Getting a DC power supply to handle the current used by an auto amp is usually impractical. The fuses included with the amp are 120amps. You will not find that in a PC power supply.

Alright thank you for that, I probably should have checked for that information.
However instead of the Boss AR4000D, if I go with the Boss AR3000D which will be connected to my Boss Audio P156DVC which runs at 1250W RMS will a 850 Watt pc power supply be able to output enough power?

850W PSU = 850W / 12V = 70A
AR3000D Amp = 2 x 35A fuses = 70A

 

[kanewolf]

Maybe, but again, unlikely. You would have to find a power supply with 70A on a single rail. Maybe you can find one, but then you need larger diameter cabling than a standard PC power supply provides. The 70A in a PC power supply is provided over several smaller diameter cables to several different locations in a PC.

Car audio amps in a home setting are just not practical.

 

[kenny030102]

Maybe, but again, unlikely. You would have to find a power supply with 70A on a single rail. Maybe you can find one, but then you need larger diameter cabling than a standard PC power supply provides. The 70A in a PC power supply is provided over several smaller diameter cables to several different locations in a PC.

Car audio amps in a home setting are just not practical.

Yeah I guess they kinda are.
However the power supply I am looking at has a single 12V rail