Im using a 16 ohm cab off the 16 ohm tap, and I am very happy with the sound. Yesterday I decided to try out a ‘safe mismatch’ as described in the manual, by hooking my 16 ohm cab to the 8 ohm tap. I really liked what I heard, it was a bit louder (kinda like flicking from tube to diode rectification is a bit louder), it was puncher, tighter, a bit stiffer, basically sounded better in every way.
This is at odds with what the manual (and various forum posts I’ve read) said would happen though. The manual says:
So far my experience is the exact opposite of this. The darker, smoother, less output sound is running 16 ohm cab on the 16 ohm tap.MIS-MATCHING: When running a higher resistance (for example: 8 ohm output into a 16 ohm cabinet), a slightly different feel and response will be eminent. A slight mismatch can provide a darker smoother tone with a little less output and attack. This response is a result of the amplifier running a bit cooler.
I know my cab is definitely 16 ohms, I wired it myself (two 8 ohm speakers in series), I even measured it with my multimeter today and it measures 14.2 ohms resistance which is about right for a 16 ohm cab.
Is this experience typical? Or could something be wrong with the 16 ohm tap on the transformer?
For reference I’m using orange and red channels on Modern, at loud bedroom volumes (loud enough to rattle the walls but not enough to deafen myself), FX loop is on, using tube rectifier, powertubes are new as of last week (Mesa 6L6GC STR440) but rectifier tubes are probably original (I’d guess 15 years old). Cab is a 2x12 with Celestion V30 (out of a Mesa cab) and Celestion G12K100, both 8 ohms and wired in series.
Thanks for any help guys