4 ohm and 8 ohm cabs; Safe mismatch?

[cellardweller]

My buddy had been letting me use his Peavey 4x12, which is a 4 ohm cab.
My question is can I also use my 2x12 cab which is rated at 8 ohms, and what would be the proper way to connect both cabs?

Amp in question is a Series 2 Single Rectifier.

Thanks in advance.

 

[R_ADKINS80]

Nope....your amp has a minimum 4 ohm load. With the speaker outputs being in parallel, a 4 and an 8 ohm cab would be close to 2 ohms total load. Would put a bug strain on the power tubes and possibly the output transformer.

 

[cellardweller]

Thanks.

 

[domct203]

You could build a series splitter box and make the combined impedence 12 Ohm (vs 2.66 Ohm in parallel), which would be fine in the 8 Ohm speaker output of the amp.

Dom

 

[soundchaser59]

aka "triangle splitter," it puts the two speaker cabs in series for a 12 ohm load. Handy to have around when you don't always know what speaker you will have to plug into.

 

[Gnarkill3k6]

Will it be ok to build this triangle splitter with plastic (or isolated) jacks, in a metal housing?

 

[domct203]

Will it be ok to build this triangle splitter with plastic (or isolated) jacks, in a metal housing?

Yes, as long as the jacks are completely isolated from the metal box.

Dom