Audio Database

301MMII
Commentary

This speaker system further improves the perfection of the best-selling 301 mm.

A cone type woofer is installed in the low range.
In the 301 mm II, the low-level linearity has been improved by devising dampers, edge traceability, magnets, coils, etc. In addition, the high-level linearity is also taken into consideration by inheriting the basic design of the 6-layer wound voice coil, which emphasizes heat resistance and heat dissipation.
In addition, the weight of cone paper is reduced and the cone curve is improved.

Two improved cone-type tweeters are installed in the high range.

Bose's unique dual frequency network is used in the network section.
In this network system, two crossover points are provided to achieve both full-range smooth frequency characteristics and multi-way broadband playback.
In addition, the crossover point has been revised, the structure has been simplified, and the materials have been carefully examined. In 301 mm II, a woofer voice coil is used together as a cutoff coil of a dual frequency network, and the common frequency band between woofer and tweeter is set to 1.3 kHz to 2.8 kHz.

A flat power irradiation system is adopted for the unit layout, introducing the know-how obtained in the 901 series. By setting an effective unit layout for emitting acoustic energy, the characteristics are controlled from changing depending on the listening position.
The enclosure uses high-pressure pressed chips made from a mix of Canadian Maple and White Birch. Resin processing provides a highly transparent enclosure with good sound, and the thickness of the board is also examined to reduce resonance.

In order to realize a finish faithful to the design without dispersion in precision and critical arrangement of the unit, it was designed using Syncom II computer developed in-house, and high reliability was realized by controlling from the selection of parts to the check.

There are 2 color variations, black type 301 MMII and white type 301MMW-II.
Also, there were 4 kinds of grill colors in 301 MMWII.

Model Rating
Method 2-way, 3-speaker, direct / reflecting method, bookshelf type
Units Used For low band : cone type
For High Pass : Cone Type x2
Impedance 8 Ω
External dimensions Width 433x Height 268x Depth 236 mm
Weight 6.5kg
Sold Separately Lifting Bracket CB-3Z/CB-3WZ (1 pair, ¥ 19,000)
Wall Mounting Brackets WB-3Z/WB-3WZ (1 pair, ¥ 19,000)
Lighting Baton Hanging Bracket BB-3Z (1 pair, ¥ 22,000)
Floor Placement Stand SS-301 (1 pair, ¥ 15,000)
Tripod Stand SS-33II (1 pair, ¥ 50,000)
Stack Bracket PR-3 (4-piece set, ¥ 10,000)