Ripolbass wih 6x 10"Peerless sls 263 drivers.http://www.europe-audio.com/Product.asp?Product_ID=5046
the rear of the loudspeaker
Picture taken from above showing the back of the speaker with crossover
Inside of ripol
Inside of ripol with drivers,
Slot loaded open baffles "SLOB" also called Ripol by Axel Ridtahler as that first came up with the idea.