Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Plural or compound reproducers
Patent
1989-03-15
1990-05-15
Isen, Forester W.
Electrical audio signal processing systems and devices
Electro-acoustic audio transducer
Plural or compound reproducers
381205, H04R 102
Patent
active
049264877
ABSTRACT:
A speaker system for reproducing heavy low sounds comprises a tube body having a tubular straight portion and a pair of tubular arms, each of the arms extending substantially in parallel to each other in the forward direction to provide therebetween a wide space opening forward for accommodation, each arm further having sound radiation outlets formed in its forward end portion. A speaker driver is attached to the forward end of one of the arms and communicating with the sound radiation outlets, and a drone cone attached to the forward end of the other of the arms and communicating with the sound radiation outlets.
REFERENCES:
patent: 1908172 (1933-05-01), Nicolson
patent: 1988250 (1935-01-01), Olson
patent: 4509184 (1985-04-01), Yanagawa
Hara Kenji
Kozaki Ken
Ogawa Yoji
Satou Hiroshi
Teraoka Yoshiaki
Isen Forester W.
Sanyo Electric Co,. Ltd.
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