Audio Database

The picture of Mastering Monitor30

HARBETH Mastering Monitor30
200,000yen(one-set, around the 2003 time)

The speaker system developed as a replacement monitor of LS5/9 of BBC.

The corn type Woofer of the 20cm caliber which adopted the RADIAL corn is adopted as low-pass.
In order that a RADIAL corn might optimize the amount of combination of aluminum, employing the merit of polypropylene efficiently, it was developed from the exchange with the laboratory of a material maker or a university,By changing the blend from the center of a diaphragm to the circumference, many problems generated on the corn surface in the zone of inside and low-pass one, and each inside and quantity region are reduced.

The custom-made article of SEAS"Excel" which is a 2.5cm soft dome shape tweeter of an input-proof [ high ] design is adopted as a high region.
By the careful design which uses a silver wire rod, it has a strong structure.

A crossover network begins the fiberglass board of a computer grade, consists of parts of careful selection, and is designed by careful measurement and repeated audition.
Moreover, the speaker terminal has adopted the gilding plug corresponding to a banana plug.

Haar Beth's original tuning technique which prepares the whole tone is adopted dumping the sound with the material and double layer wood of a tar system thin wood being used for enclosure.
Moreover, the acoustic diffraction in edge is reduced by performing round processing to the edge of a front baffle.
Furthermore, the technique called SuperGrille is used for the saran network, the grill of a jersey material is embedded in the slot of a front baffle, a sense of togetherness with enclosure is raised, and the influence on sound quality is suppressed. It this grill not only protects a unit, but is designed prepare sound wave radiation smoothly, and it has become the design which carries out listening in the state where it usually equipped.
Finish is the Gray Payne Ted finish.

Rating of a mode
System 2 way, 2 speaker bass-reflex system, and book shelf type
Use unit For low-pass: 20cm corn type
For high regions: 2.5cm dome shape
Play frequency band 50Hz-20kHz±3dB
Crossover frequency 2.8kHz(18dB/oct)
Output sound pressure level 85dB/W/m
Impedance 8ohms
The maximum input 100W (program)
Recommendation amplifier input 50W-150W
Dimensions Width 279x height 460x depth of 277mm
Weight 12kg