Re: Why??(Marshall issues)
Yeah but he has the Marshall cab wired at 16 ohms and the H&K wired at 8. So, there are a couple reasons the Marshall will sound muffled.
1) It's just plain quieter. It's getting half the power the H&K is.
2) It's not breaking up as much. Breakup adds high-end harmonics to the sound, but since the 1960 is running at low power, there's no breakup.
3) The higher reactance of the 16-ohm circuit tends to attenuate highs between the amp and speakers, even before it gets turned into sound you can hear.
I bet if you wired that 1960 for 4 ohms and ran it by itself, it would sound a lot different. Unfortunately, you can't run it at 4 ohms AND the H&K at 8. That would give you 3.2 ohms combined, and your amp has a 4-ohm minimum IIRC.