I have a Monoprice Stage Right 15 Watt tube amp which has an internal 8 ohm speaker. I have built an external cabinet, and installed a 8ohm speaker, which I had from an older amp.
How about if I wire the two speakers in series by using a new speaker jack, wired off of the installed speaker mounted on the amp case? I then would run a speaker rated cable, from the internal "bypass" jack I will install, to the external speaker cab jack with the reversed polarity. (I hope that is the correct term.
Am I correct that this will be seen as 16 ohms by the amp? These amps have a panel on the back saying rated at 8-16 ohm near the external speaker factory installed jack. That jack, disconnects the internal speaker, and allows only the external to be used, which seems like a wasted idea, if you ask me.
I have worked as an electricians' helper for a couple of years, so I have some knowledge of how electricity works.