I was debating if I should go with the G12H-65 (based on the greenback speaker) since it had a brighter or pushed mids at the upper end. However, based on a recommendation from someone here (CORY) I chose the G12H-75 Creamback speakers. Thanks a lot Cory, I am very happy I came across your thread. I ordered the speakers that arrived today. Before I made any changes I decided to get some recordings of before an after. As a bench mark I rolled out the big brother to the combo for a side by side comparison. Both amps sound identical thought the 412 cabinet (head has Mesa EL34, Combo has Tung Sol EL34B due to low mechanical noise). What I really wanted was the same tonal character I get from the oversized Mesa cab. The stock V30 in the combo seem to be too rich in the midrange frequencies that drown out the top end. Typically I have to dial down the treble, but found I had to add more treble with the combo. The Celestion G12H-75 Creamback speakers deliver the Mesa 412 character perfectly. The Creamback speaker has a good balance of mids to treble and a bit more bass. I believe the Creamback offers a better tonal range for the RA100 Combo. Again, THANK YOU CORY for the recommendation. 8)
For starters, I match the settings on the combo that I normally use with the RA Head and made a few recordings. I used the Vintage Lo (blue) for the recording and a superstrat with single coil sized humbuckers. As for the mic's, I used a Shure Sm57 at the center of one of the speakers, an EV RE320 at the midpoint between edge and dust cap of the other speaker, and at 6 ft distance a RODE NT1-A and blended it all together during the mixdown. I do not think the recordings turned out as I had hope they would. Also had the reverb on which was not supposed to be active (so I left it on for the rest). Yes I do need to practice but figured to play something that sounds familiar even though I really do not know the songs all that well.
Benchmark: RA100 combo amp channeled though Mesa OS Recto Cab
https://soundcloud.com/user-353100000/ra412wav
Stock RA100 Combo
https://soundcloud.com/user-353100000/racombov30wav
Modified RA100 Combo with pair Creamback G12H-75
https://soundcloud.com/user-353100000/racreambackswav
For starters, I match the settings on the combo that I normally use with the RA Head and made a few recordings. I used the Vintage Lo (blue) for the recording and a superstrat with single coil sized humbuckers. As for the mic's, I used a Shure Sm57 at the center of one of the speakers, an EV RE320 at the midpoint between edge and dust cap of the other speaker, and at 6 ft distance a RODE NT1-A and blended it all together during the mixdown. I do not think the recordings turned out as I had hope they would. Also had the reverb on which was not supposed to be active (so I left it on for the rest). Yes I do need to practice but figured to play something that sounds familiar even though I really do not know the songs all that well.
Benchmark: RA100 combo amp channeled though Mesa OS Recto Cab
https://soundcloud.com/user-353100000/ra412wav
Stock RA100 Combo
https://soundcloud.com/user-353100000/racombov30wav
Modified RA100 Combo with pair Creamback G12H-75
https://soundcloud.com/user-353100000/racreambackswav