I play upright bass and for gigging I use two G&K CX210 cabs with an Ampeg PF-500 amp. For semi-acoustic rehearsals, I use the Ibanez Promethean P3110. Even though both setups works GREAT, I was looking for something even smaller, lighter and more flexible. The HD112 is the answer! I use one combined with a Trace Elliot ELF for rehearsals and small semi-acoustic gigs of these cabinets powered by the PF-500 for bigger venues. The HD112 has better specs than the previous HX112 and because I don't like the sound of Neodymium speakers, this HD112 is ideal for me. It's the only speaker in the HD series that has double coils so it's switchable from 8 Ohms (I reckon one 8 Ohm coil) to 4 Ohms (I assume two 8 Ohm coils in parallel) which is ideal and offers optimal flexibility. The sound of this cab is nicely balanced. It has great low end but not the sub lows that you get from 1x15 or 2x10 cabinets (I don't need for upright bass anyway). The lows and mids are very defined and the 3-position switchable tweeter delivers crisp highs if required. I tend to say that the speaker has very good efficiency because only one cabinet in 8 Ohm mode really fills the room in combination with the T.E. ELF (rated at 130 Watts at 8 Ohms). I think the HD112 looks fantastic and it's very well built. It weighs only 15 kgs and the size is very convenient for transportation. Even though they're not too heavy, I would have liked a second handle bar but then again, it's very light weight so even with one handle it's easy to carry around. For me, it's the ideal (light, portable and powerfull) setup combined, especially comabined with the T.E. ELF. A dream come true for the travelling bassplayer ;-)