How to use (2) cabs with PF500 ?

[Rokknbass]

Just tested the Ampeg PF500, it only has one speaker output at 4ohm 500 watts.
My existing cabinets are 1x15" at 4ohms and one 2x10" at 4ohms.
How do I run these cabs with the P500 and get the full 500 watts ?
Do i run in parallel, i will only be doing 2 ohms ?

[father of fires]

You can not run these cabs together. You need either 1 ea. 4 ohm cab or 2 ea. 8 ohm cabs.

If the amp only has one output some cabs will have a parallel outputs so you can daisy chain more than one cab but you still need to be aware of impedances when combining cabs.

Good luck!

[onosson]

If the PF 500 doesn't run below 2 ohms, then you can't run both of those cabs, and you're getting the full 500 Watts into any single 4 ohm cab anyways.

[RickenBoogie]

This is why no one should buy a small 4 ohm cab. Useless they are, for all but a few rare occasions. Your 2 cabs combined will present a 2 ohm load to that amp, which will NOT work out well for very long. You can use use either/or, but then you're trying to pump 500 watts into a cab that can't handle HALF that. I'd sell them both, and start over with ONE 8 ohm 4x10 or 2x12.