The older Champs have amazing tone, but they do need to be a bit cranked (LOUD) to get that tone. I replaced the 8" Jensen in my mid-seventies Champ with a Weber 10" Vintage speaker. What a sweet combination.
I was just able to squeeze the 10" Weber (custom ordered to match low wattage and 3.2 ohms impedance) into the cabinet:
For a while I had a JBL K-110 in the Champ - it sounded great, also, even with a bit of an impedance mismatch.
But it would be infinitely sweeter IF it had a master volume control.
The only pedal I really care about anymore is my mid-seventies vintage DynaComp Compressor - what great tone. No need for a distortion pedal, just a good amp with natural overdrive and the DynaComp compressor pedal do it for me.
Another great amp that DOES have a master, and can get awesome tones at relatively moderate volumes is the VOX AC10 - wonderful little amp for the music room, with reverb.
Sweet low volume tone:
