This is a 12" JBL clone that works in a small box. 2 cu.ft should have a -3db at around 40 hz. Here are the driver parameters: http://lautsprechershop.de/pdf/beyma/beyma_12b100r.pdf Not exactly "econo", but very high quality. Anyone have experience?
That is a very interesting and unusual speaker. IMHO not very expensive for it's quality. Perfect for mid-size box working down to about 40hz. Mid-Hi efficiency. (higher than Designer 12's)