This is the cabinet:
Kustom KG412 4x12 Guitar Speaker Cabinet Black Slant: Shop Amplifiers & Effects & Other Musical Instruments | Musician's Friend. A Kustom KG12 with original speakers. I'm not so much trying to increase the volume as much as improving the sound. Make it unique. I thought that by adding a different cabinet with different speakers the two sounds would mix into something new. But since I can't do that, I thought I could put in different speaker types in. Like two of this kind two of that kind. I've restored instruments before, but have never done any work on my amp itself. (Which, If it matters, is an Egnater Rebel 20) So I'm a little lost on the ins and outs of what I'm doing.