With 400L, the case has certainly not become small. But the development was clearly the efficiency and simple construction in the foreground and we think we have succeeded very well. Only one board must be mitered and the efficiency amounts to over "real" 100dB from 45-120hz. With 1000W input power we come here times just to the 130dB, at 40hz we are still in the range around 125dB - and that with a 159 Euro chassis.
Whoever has the space and wants to produce brute useful bass levels, will be very happy with this subwoofer!
Our speaker kits contain:
-selected loudspeaker chassis
-screws and cables
-high quality crossover components (except subwoofer..)
-detailed construction plan for cabinet and crossover as PDF. Download or paper.
-Bass reflex tube and damping material (if needed)
-terminals or terminals
Please buy the required wood from the carpenter you trust or in a well-stocked hardware store.