Audio Database

J33
Commentary

This is a piano finish speaker system with a compact size and high sound quality incorporating a design that went back to the origin of the bookshelf.

A 21 cm cone type woofer using a sheet, themed and cone is installed in the low range.
This sheet, seamed, and cone is made of a highly uniform material with less unevenness in density and thickness. The shape of the curved cone gives it strength. The magnetic circuit using a large ferrite magnet achieves a magnetic flux density of 9,500 gauss, and the combination with a 30 φ voice coil realizes high efficiency and high input resistance.

A 2.54 cm soft dome type tweeter is installed in the high range.
The diaphragm is made of polyester fiber coated with acrylic damping agent by a special method. It has excellent directivity characteristic of the dome type and absorbs harmful resonance appropriately.

The enclosure uses a high-density, high-density particle board with a three way locking structure for a sealed structure. The units are arranged so that the tweeter comes outside the baffle, and a symmetrical design for improved orientation.

Piano mirror surface finish is used for exterior finishing. Starting with surface preparation (polishing), two undercoats, grinding, three overcoats, grinding, and wax-buff finish, a beautiful finish is achieved.

Model Rating
Type 2-Way, 2-Speaker, Airtight Type, Bookshelf Type
Units Used For low band : 21 cm cone type
For high-pass : 2.54 cm dome type
Maximum allowable input 60W
Impedance 6 Ω
Output sound pressure level 90dB/W/m
Frequency characteristic 45 Hz to 20 kHz
Crossover frequency 2kHz
Network 2-way, 12dB/oct, LC Parallel Type
External dimensions Width 240x Height 410x Depth 200 mm
Weight 6.9kg