Proline is a series of subwoofers equipped with high quality low range CELESTION speakers and very neatly designed crossovers. They are covered with carpet.
Stage Black is a series of subwoofers equipped with high quality low range Celestion or FaitalPRO speakers (depending on the model) and very neatly designed crossovers. They are covered with very strong , durable and aesthetic polyurethane varnish.
Stage Silver is a series of subwoofers equipped with top-notch B&C speakers. Enclosures covered with very strong, durable and aesthetic polyurethane varnish.
Stage XPRO is a series of subwoofers equipped with high quality low range, neodymium speakers by FaitalPRO and very neatly designed crossovers. They are covered with very strong , resistant and aesthetic polyurethane varnish.
Polski (PL) 
