Vand/Schimb Boxe Bowers & WILKINS DM 17

Detalii anunt

Stare produs: Utilizat
Ultima modificare: 16.10.2018 19:45:09
Numar vizualizari: 787

Pret

1600 RON

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Vanzator: silviu2403
Oras: Bucuresti (Bucuresti)
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Boxe foarte rare, construite de insusi John Bowers in anul 1985.

Sunt in stare foarte buna, tinad cont de varsta lor. Perfect functionale.

Sunt predecesoarele seriei 805.

Boxele sunt extreme de liniare, cu distorsiuni minime. Poate unele dintre cele mai liniare si neutre boxe din cate am intalnit. Sunt realizare dupa indelungi studii si cercetari, avand tehnologia faimoaselor 801.

Boxele au costat 180.000yen in 1985, aprox 1800$. Unele dintre cele mai scumpe la vremea lor.

Prefer predare personala cu auditie si proba.

Livrare gratuita prin curier cu verificare colet.

Am si plasele de protectie.

http://audio-heritage.jp/BandW/speaker/dm17.html

A mini monitor speaker that inherited the technical result obtained in 801F.

In DM 17, the tweeter is mounted on the top panel of the enclosure, preventing the diffraction phenomenon disturbing the sound image localization, and greatly improving the dispersion. Also, by arranging the tweeter and the woofer to be in phase with each other and delay correction with a crossover network corresponding to this, the sound waves reach the ears of the listener as a uniform spherical wave.

The 15 cm cone type Woofer is carried in low-pass.
The corn has adopted Bekestrain material subjected to the same dump treatment as Woofer. Bextrene material is made of polymer with high crystallinity and high rigidity, and achieves excellent sound pressure level even in low frequency band.
Hairline finish of satin chrome is adopted as the front face of the woofer's die cast frame.

The 2.6 cm dome tweeter is carried in the high region.
The diaphragm is a braided polyester fiber, and has gotten straightforward characteristics out of the section manager band. Also, by adopting a powerful magnet, we have reduced the volume to the last minute.

The crossover network is designed by introducing the numerical optimization design technique established at the development stage of 801F.
In this technique, ideal circuit constants are determined by computer simulation, and furthermore, precision is improved by carefully selected parts.

As a protection circuit, we have an APOC (Audio Powered Overload Circuit) system based on B & W's unique electronic circuitry.
This APOC system reads the voltage applied to the voice coil of each unit, and when exceeding the limit, the relay is operated to cut the input signal. This prevents thermal damage due to overload beforehand.
While the APOC system is in operation, the Akai LED next to the B & W logo is lit, and it automatically restores when the overload condition has passed.

The enclosure is sealed.
The board material is designed to incorporate a 19 mm thick front baffle assembly in a two-layer structure of 12 mm thick high density particle board and 6 mm Vichenmen pad.
In addition, the Woofer Unit is isolated from the enclosure by the rubber gasket, reducing the propagation of vibration suppresses coloration due to the resonance of the enclosure.

There were two color variations of black and walnut.

Driver units with characteristic difference within ± 0.5 dB are selected by computer measurement and assembled as one pair.
In addition, measurement data was attached to each one.

There was a speaker stand as an option separately sold.
The DM 17 is designed to exhibit an acute performance when listening in the listening area of ​​10 ° in the longitudinal direction with respect to the tweeter with it mounted on a dedicated stand.



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