Onkyo SCEPTER 10 (circa 1976)
A large floor-standing speaker system with a 38 cm woofer and a horn-type tweeter with an acoustic lens.
Overview
Specifications
| Model Rating Method | 2-Way, 2-Speaker, Bass Reflex System, Floor Type |
| Units Used | For Low Band: 38 cm cone type (W-3810A); For High Range: Horn type (TW-1206A + Acoustic Lens AL-120) |
| Playback frequency band | 30 Hz to 20 kHz |
| Max Input | 100W |
| Impedance | 8 Ω |
| Output sound pressure | 95dB/W/m |
| Cabinet internal volume | 160L |
| Selector | 3-step mode selector |
| External dimensions | Width 560 mm x Height 869 mm x Depth 522 mm |
| Weight | 44 kg |
Design
The SCEPTER 10 uses a 38 cm cone woofer, the W-3810A. The cone is multi-corrugated. The voice coil is long, 78 mm in diameter and heat resistant, and an aluminum reinforcing ring sits at the joint between cone and voice coil. The edge is a specially molded 2-layer urethane foam. The butterfly damper is made of heat-resistant resin laminate. The magnetic circuit has a 180 mm x 95 mm x 20 mm magnet, an H-type pole piece and a copper short ring to reduce harmonic distortion. The tweeter is a horn-type, the TW-1206A, with a 20 micron titanium foil diaphragm and an aluminum die-cast short horn with a 500 Hz cutoff frequency. In front of it is an AL-120 acoustic lens made from high-impact styrene polymers, which prevents blade sticking. The cabinet baffle is 20-mm Yonematsu plate. The sides and internal reinforcement are softwood chip board. The exterior has a rosewood grain finish.
Product Family
The SCEPTER 10 belongs to the Onkyo "Scepter" series, along with the U-3500, Scepter, Scepter-100, Scepter-120, and Scepter-500.
Market
The foam surround deteriorates with age and is a known failure point. Re-foam repair kits are available for this model.
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