
MESA F-100. Pretty cool amp, one of my favorite Mesas, really. I usually use this amp with a 2x12 with a V30 and a Redback and my 4x12, which had all V30s until recently. Always sounded great with these 2 cabs.
But recently, I decided to change the top 2 speakers in the 4x12 to Greenbacks to try the Friedman 4x12 setup (v30s on the bottom GBs up top). After the speaker change in the 4x12, I tried all my amps with the new speaker configuration and they sound really cool. The GB up top took out some of the harsh frequencies of the V30s at ear level. So that worked really well for all my amps.
Except the Mesa. The Mesa completely rejected the GBs and turned into total shit. No low-end or any midrange just can-of-bee highs. I actually thought the amp was BROKEN. That is how bad it sounded. Then I plugged it into my 2x12 that I usually use with it and... the amp is fine.
So then I am thinking the GBs were blown. Again, it was THAT bad. So I tried the 4x12 with my other heads.... and the cab is also fine.
But this Mesa does NOT LIKE GREENBACKS AT ALL.
