Just over 25 years ago I had an Ampeg SVT classic head and 8 x 10 Cab, all US built. After playing for many years and trying so many different rigs, found this to be my ultimate sound!! After packing up and selling all my gear 20 years ago, have just setup again, and knowing that it had to be Ampeg again, decided to buy the same, except this time, decided the rig needed to be a little smaller for the initial home use. So I bought the SVT-CL Heritage head (4 ohm or 2 ohm) and a 410HE (8 ohm) cab. I believe when I tried this at the store, I had convinced myself that the sound was identical to the 8 x 10 - wrong!! The 410HE does not have the same PUNCH and TIGHT compressed sound that I had been use to. It just sounds a little BOOMY. I have read several postings on this forum, and it appears any smaller speaker cabinet configuration will never give the same sound that a larger number of speakers will give, but really don't want to go back to the huge 8 x 10 cabinet, unless all other options fail!! I have discussed this in great length with a very good friend who is an electronics engineer, and between us it appears that firstly to get a tighter, punchier, more compressed sound that I prefer, and one where all notes cut through the mix, that firstly I would I need a 4 ohm cab rather than 8 ohms which is the impedance of the the 410HE I have. It may also create a tighter sound if a mixed 2 X 4 ohm cabs to reduce the impedance down to only 2 ohm (switching the head to 2 ohm). My question here is, for the smaller and lighter to carry option (excepting is still a compromise to a 8 x 10) which configuration would give the closest sound to the 8 x 10? I have also looked at the 410 HLF which is 4 ohms, but it appears that a ported cabinet can give a more 'boomier type sound' (thats my expression not the engineer's) than the 410HE. So there is so many different configurations for me to consider and without finding a store where I can try them makes the choice very difficult. I have even considered, ordering 4 new US made eminence drivers (4 ohms) to replace the 8 ohm ones in the existing 410HE I have. Which configuration would you think would work best? A: 2 X 10 speaker cabinet at 4 ohms and which make, or should I build my own? B: 2 of 2 X 10 speaker cabinets at 4 ohms (head set to 2 ohms) and which make, or should I build my own? C: 2 X 12 speaker cabinet at 4 ohms and which make? D: Keep the 410HE and replace the chinese eminence 8 ohm drivers with genuine 4 ohm US drivers? Any other configuration ideas?