The Gauss cab is sealed. It's small. Equal / slightly better construction than say, Bag End (13 ply wood, not particle board). For those who don't know Gauss, they were hugely popular in the 80's-90's for their over-built hi-wattage capacity raw speakers. When powerful rack amps came out Gauss was the one speaker you couldn't fry. Really designed for guitar, you can throw bass or keyboards at it as well. As the pic shows, it has an optional open back, so it's real versatile. Speaker specs: Gauss 3281 12" Ceramic Magnet Woofers - 200-watt, 8 ohms. 3" voice coil. Ribbed cone, 4" paper dome. LINK: http://losangeles.craigslist.org/wst/msg/617693187.html $ 150 shipped to US48. Paypal ok.