Ampeg PF500 and SVT410HLF plus PF115 cabs ohms question

[Harp Arora]

I have a pf500 head and a SVT410HLF cab which is 4ohms. Can I also connect my Pf115 cab which is 8 ohm without issue?

 

[rodl2005]

No, don't do it! 4 ohm cab plus an 8 ohm cab gives a total load of 2.67 ohms, which is under what yr amp can handle

 

[Harp Arora]

thank you. If I had a head that went down to 2 ohms then it would be all good?

 

[rodl2005]

thank you. If I had a head that went down to 2 ohms then it would be all good?

Yes. 2x8 ohm cabs = 4 ohms
2x4 ohm cabs = 2 ohms.
8 ohm and 4 ohm cab = 2.67 ohm.
With solid state amps you're safe as long as you don't go UNDER the amps lowest impedance rating. It's ok to be over

 

[Harp Arora]

Thank you!

 

[johnpbass]

Just to add, I would guess that a 410HLF goes lower than a PF115 so if you're looking for more low end, the 115 will not add much.

 

[Harp Arora]

Probably does, The 115 was my primary and I just got a great deal on the 410 for larger gigs. Just wanted to see if I could try them together.