Boss Katana 1x12 Combo - How to connect an External Speaker Cab (does NOT mute the Internal Speaker)

In this video: Learn how to connect an external speaker cabinet to a boss katana 1x12 combo amplifier, which will not mute the internal combo speaker & will not void your boss katana warranty. ...little additonal note.... here is the celestion G12 century speaker i mentioned in this video: https://www.zzounds.com/item--CELCNEO12 - i was wrong it is 102db (not 103db), although that said i still think it may be the loudest speaker celestion have ever made. the later 'vintage' version they made i now discovered actually is only 98db. the popular celestion vintage 30 speaker is 100db. the celestion G12T-75 is 97db (5db less than the celestion G12 century... interesting fact: if the difference was 10db instead of 5db, then the volume you would get from the celestion G12 century would be TWICE as loud as the G12T-75 when used with the same amplifier!)