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Pioneer HPM-70

Large Bookshelf Type Loudspeaker System (1979-81)

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Pioneer HPM-70


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

Impedance: 8Ω

Sensitivity: 92.5dB

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

Weight: 17.5kg

Year: 1979


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