can anybody tell me how good these MB Quart DWF subwoofer model are. I belive these are older models and might be their low line. Anybody have one and if so how do they sound in sealed box. This was for a 12" sub, does it require small or big box for sealed application, or is it better ported. How does this compared to current MBquart newer models that are on sale online cheap.
Also how do they compare to different brands like alpine, boston, ID, infinity
