Show your 2x12’s

[BeZo]

How did you wire that to switch between parallel 8 ohm mono, and stereo series 16 ohm/side operation without a switch or 3rd jack?

It uses a shorting jack, like this one.

https://www.stewmac.com/electronics...BnkfoYfof1qn8lelRXpTTcR-jL4e1rDhoCxmwQAvD_BwE

Basically, you wire each speaker to a jack, and then jump the positive from the regular jack to the shorting lead on the shorting jack, and connect the negative leads on the speakers together. When the regular jack is used alone, you run both speakers in parallel. When you just use the shorting jack, it splits them and you get one speaker in mono. Using both give you each speaker in stereo, since using the shorting jack breaks the connection and separates the circuits.

I don't trust this arrangement, but I did consider it in my home 4x12 for testing stereo circuits.

 

[madrigal77]

 

[MantraSky]

My favorite for years 2008 Bogner 2x12OS cab with V30's (UK)