The loudspeaker box (1) has a hollow chamber (2) or several hollow chambers which are wholly or partially hermetically sealed. The sealed part is filled with a gas or gas mixture lighter than air. It can be a bass reflex box or bandpass box with the bass reflex opening (6) hermetically sealed by a passive membrane (7)
申请公布号
DE19815954(A1)
申请公布日期
1999.03.18
申请号
DE19981015954
申请日期
1998.04.09
申请人
GFD INFORMATIONSSYSTEME GMBH, 01454 RADEBERG, DE
发明人
AUGUSTIN, HEINZ JUERGEN DIPL.-ING., 39590 STORKAU, DE
