From a previous BC thread -
[quote name='basskit_case' timestamp='1392199753' post='2365772']
I was looking at the P3110 on Thomann yesterday, they have a link to the manual and I read it as 160w or 300w with extension cab.
[/quote]
The quote is from Talkbass. I have found the wiring diagram somewhere too. If I find it I will post it...
"Nice thing about the P3110 is the internal speaker has two 8 ohm voice coils wired in parallel thus you have the full 300 watts with the internal speaker. When you plug in the external speaker one of the 8 ohm windings is disconnected. A very innovative feature and a great amp. I have the P3115 (same amp diff cabinet) and love it. Enjoy".
Conflicting info indeed. But the 8ohm winding in the combo is supposed to split into 2x150w when an 8ohm extension is attached resulting in 300w either way. Jiggery pokery beyond my feeble mind I'm afraid. Mine was pretty loud on its own but it t is a 110 and not an 810 😁