black shadows, classic leads, g12k100's, g12k85's will remove this mid spike without being overpowered
they are quite thick and flat voiced speakers and they quite big in small cabs
greenbacks are not spikey, but are very mid heavy as well, but more smooth sounding
I love them in 4x12's, but not sure about 2x12's
the g12h is punchier on the lows and has a subtle midscoop around the 800hz range
sounds likes a mid term between the organic vintage tone of a greenback and the punchy in your face tone of the v30
it seems to deliver a little more high end than both, and definitely a bigger and punchier bass, but less center and upper mids
if you're the uk, you could find yourself a chinese hiwatt HG212 "high gain" 2x12 cab
the chinese heavy duty 100w fane speakers in it are just AMAZING and they worked really well with any amp I've plugged into it
I got it on a trade intending to swap speakers for black shadows, v30's or scumback m75's (greenback clones), but totally forgot about that after playing the stock cab (not about sparing money at all)
they have this amazing punchy articulation that makes single notes pretty weighty
first time I realized what a "woody" tone could mean... sounds like I can acoustically hear my les paul resonating through the cab along with all the heavily driven amp sound
I usually take this stock cab over my marshall 4x12 with scumback h75's (g12h clones) and custom mg black dog speakers (weber parts, similar to the silver bell and the scumback j75, but with paper bobbin)
sometimes I loan this cab to a famous brazilian band as their guitarist loves it with his orange th30 (he has an orange 2x12 with vintage 30's, but he and his tech prefer the sound of my hiwatt cab by a mile)