Hello.
I had a Tks112 tweeter version with my TH500. With no tweeter, sound is warm and pretty, but if you want more options like a more modern sound is better have the tweeter and is not expensive.
When I bought mine, I wrote directly with Tommy Sodergren.
One cabinet is good for not loud situations, if you play in a band with several members, better buy two, or a bigger cabinet.
Bye.