Pioneer hpm-60 (1977-1980)

Name: Pioneer hpm-60
Brand: Pioneer

4-way bookshelf speaker with carbon fiber woofer and polymer super tweeter, designed to compete with JBL's high-end models.

Overview

The Pioneer HPM-60 is a 4-way, 4-speaker bass-reflex loudspeaker system produced from 1977 to 1980. Part of Pioneer’s HPM (High Polymer Molecular) series, it was engineered to rival American high-fidelity speakers like the JBL L100 and JBL L36. The speaker features a 10" carbon fiber blended woofer, a 4" midrange, a 1-3/4" cone tweeter, and a high-polymer super tweeter designed to reduce narrow-beam directionality. It includes individual level controls for mid and high frequencies, allowing tonal customization.

Specifications

System	4-speaker, 4-way
Enclosure	Book-shelf style, Bass-reflex type
Drivers	Woofer: 250 mm (10") carbon fiber cone; Mid-range: 100 mm (4") cone; Tweeter: 45 mm (1-3/4") cone; Super tweeter: High-polymer film
Nominal Impedance	8 Ω
Frequency Response	35 - 25,000 Hz
Sensitivity	92.5 dB/1W/1m
Rated Input Power	30 W
Maximum Input Power	60 W
Crossover Frequencies	3,000 Hz, 4,000 Hz, 12,000 Hz
Dimensions (W × H × D)	350 × 610 × 321 mm (13-25/32" × 24" × 12-5/8")
Weight	17.5 kg (38 lb 8 oz)

Design

The HPM-60 uses a carbon fiber blended woofer with an ester-type urethane foam edge and includes a polymer film super tweeter that operates without a magnet, using current across a thin foil. First generation models feature superior internal bracing, polyester film capacitors in the crossover, and heavy-duty cabinets, while later versions used electrolytic capacitors and lighter enclosures. The speaker’s fake vinyl veneer is prone to peeling, and the original internal damping material is sparse. The super tweeter has low output and contributes to a bright, forward sound signature.

Context

The HPM-60 was the second model in Pioneer’s HPM series, positioned below the HPM-100 and HPM-150. The series was developed after Pioneer hired Bart Locanthi, former VP of Engineering at JBL, to challenge dominant American speakers of the 1970s. The HPM-60 specifically targeted models like the JBL L36 and L26, offering a compact alternative with JBL-inspired sonic characteristics. It competed in a market defined by the "war for domination" among Pioneer, JBL, Altec Lansing, and Yamaha during the golden era of vintage audio.

Market

HPM-60 woofers commonly require re-foaming, with DIY kits costing around $20 and professional service near $80. Replacement surrounds and midrange drivers (e.g., MW Audio MM-0721) are available. The speakers are sensitive to placement—performing best when elevated slightly and away from walls. While not as collectible as the HPM-100, well-maintained pairs have listed for $450, and individual woofers appear on eBay for under $100. Some users report paying less than $200 for a pair in recent years.