Large Bookshelf Type Loudspeaker System (1979-81)
The Pioneer HPM-70 is a large, bookshelf type 4-way, 4-speaker bass reflex system with 25cm carbon fibre blended woofer featuring a polyurethane roll edge to suppress edge reflection and resonance.
The extra tough 10cm midrange cone, wet pressed for improved transient response, covers the major harmonics of most musical instruments.
A convex flange tweeter handles the highs up to 12kHz, and Pioneer's 180 degree dispersion super tweeter does the rest.
All drivers are mounted in die-cast aluminium frames and the bass reflex port is lined with a silver ring.
Type: 4 way, 4 driver loudspeaker system
Frequency Response: 35Hz to 25kHz
Power Handling: 120W
Crossover Frequency: 2000, 3000, 12000Hz
Bass: 1 x 250mm cone
Midrange: 1 x 100mm cone
Tweeter: 1 x 45mm cone
Super Tweeter: 1 x HPM high polymer
Enclosure: bass reflex
Dimensions: 610 x 350 x 321mm
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