Scansonic mb serie

Have you tried putting bass traps on the corners? I dont think mine has 90 hrs yet but the muddy bass issue was gone after 40 or 50 hrs with bass traps. I am not familiar with your Spec amp so cant comment. Alan mentioned using Hegel H80 and I guess why I am getting good result with my H200. I am still breaking in mine 2.5's but it has become a quite enjoyable process for me.

Jjue - For grins and giggles have you tried removing the bass traps now that you have about 100 hrs on them? Although you may want to wait until you hit 150hs. I think Missioncoonery mentioned a drop in SQ when they hit 125 hrs. With my D2's the bass went crazy at 525 hrs and lasted for about 10 hrs. But remember the diamond series is a completely different driver - crossover and cabinet.

I've always said they sound higher than their price point. The only real downside is placement. If you get that right they will sound fantastic. Get it wrong and they will sound OK. But as far as driving them it shouldn't be too hard. On another forum a couple of folks are driving theirs with 7 - 15W tube amps and say they love it.

Another thing you may want to try is plugging the bottom ports with cloth or foam.

09-24-15: Jjue
Have you tried putting bass traps on the corners?
Hi Jjue,
I didn't try anything other than the keeping clothes under the bottom ports, however not blocking the air movement.
it does help to tame the bass boom, though can't eliminate to zero level.
I did hear mine MB2.5 with Avik-300, even with that I experienced the boom with all type of room treatment(in dealer,s setup), however to my surprise the MB3.5 had better sound than 2.5 in the bass and overall, maybe because the height of mb3.5 it could have the controlled the bass resonance better, by the way does it have the bottom port?