5-way model Sw-170a 6-speaker system from Akai Electric Co., Tokyo

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About the Item

A 38-cm cone woofer is installed in the low range. This unit uses an L. T. P (Linear Travel Piston Edge) with moderate flexibility to lower the lowest resonant frequency and reduce distortion. In addition, by suppressing the reflection of sound waves from the edge or cone paper due to amplitude, the disturbance of frequency characteristics is reduced. The 13-cm cone skoker is mounted in the central area. This unit uses white cone paper with a new lightweight edge material and a back cavity to reduce interference with the woofer. A 5.4x6.1 cm tweeter is installed in the high range. Sound quality is enhanced by a powerful magnetic circuit and a large-scale equalizer. A 7.5-cm super cone tweeter and two super dome tweeters with a unit diameter of 8.3 cm are installed in the super high band. The newly developed dome tweeter improves directional characteristics over a wide area. The front baffle has ivory white nylon hairs planted on the plywood surface to improve sound absorption and eliminate muddy sound. In addition, the front grille net can be removed with a magic tape. The enclosure is made from a combination of Homo gen and Lauan plywood with reinforced beams to reduce cabinet rumble, and the exterior is finished with walnut oil. Level controls are provided for midrange and high range signals. In addition to the general speaker terminal, there is a jack-type terminal. - Manufacturer: Akai - Model: SW-170 A - Years of production: 1970 - 1972 - Manufactured in: Japan - Color: Walnut - Dimensions (WxHxD): 425 x 620 x 280 mm - Weight: 22.5 kg (total set 45 kg) - Construction: 5-way, 6 speakers, closed CUSHION: - Woofer: 380 mm cone - Midrange driver: 130mm cone - Tweeters: 1x 54 mm, 1x 63 mm - Super tweeter: 1x 75 mm, 1x 87 mm horn - Power management (nominal/musical): 50 W / 80 W - Frequency response: 20 - 23'000 Hz - Efficiency: 103 dB / W / 0.5 m - Transition ranges: 600 Hz, 5,000 Hz, 10,000 Hz, 15,000 Hz - Impedance: 8 Ohm SPECIAL FEATURES: - Removable front panel - Level control on the rear panel for mid and high frequencies - Speaker connection also with 6.3 mm jack plug

Dimensions:
Height: 24.41 in (62 cm)Width: 16.74 in (42.5 cm)Depth: 11.03 in (28 cm)
Sold As:
Set of 2
Style:
Modern (Of the Period)
Materials and Techniques:
Wood,Other
Place of Origin:
Japan
Period:
1970-1979
Date of Manufacture:
circa 1970
Condition:
Rewired. Wear consistent with age and use. Slight wear and tear due to age and use, Fully restored, Surface has been polished, Surface has been refinished, Rewired and/or new components in the electrical circuit, New suspension, revised finials.
Seller Location:
modena, IT
Reference Number:
1stDibs: LU9284240571632

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