Ohms Question about vox ac15HTV1

[RickNew]

My Ac15HtV1 Runs with a 16 ohm celestial blue and has an internal switch to flip to 8 ohms to run an additional 16 ohm cab. My question is, if I run a 2-12 cab with a blue and gold both 16 ohms making it an 8 ohm cab along with the 16 ohm speaker in the combo together on the 8 ohm setting, am I risking a problem with the mismatch on the output transformer on this amp?

 

[GCDEF]

Yes.

 

[wyatt]

It will be a mismatch, new impedance is 5.33 ohms.

The tubes will react by reducing output.

The output will be disproportionately split between the speaker cabinets. The 8-ohm cabinet will handle 2/3 of the amp output, the 16-ohm internal speaker will handle the final third.

All of this might render including the internal speaker pointless.

 

[RickNew]

Thanks guys