The 16cm most typical full-range speaker unit of a
Although P-610 is the first model and the fine partial model change
was carried out after that, while it had been a form at the time of a release
mostly, it was sold till 1996.
P-610 has obtained success of the
industry beginning to the BTS standard which NHK defined.
transformer is attached to P-610 which is an initial model, and use by two kinds
of impedance, 6ohm and 600ohm, is possible.
For this reason, the marks of
the attachment hole of this transformer portion remain in P-610 series put on
the market after that.
Moreover, only impedance differs from P-610 A/P-610B.
In order to enlarge effective magnetic flux density in a magnetic
circuit, malleable iron was used, and the dumping which was excellent as
aperture class of 16cm, and high efficiency are acquired.
consistency vibration type of the design of an orthodox approach was used for
the corn part, and it has acquired the characteristic of the broadband with the
single corn with corrugation and free edge.
||BTS-6121 success single corn type full range
|At usually, the time: 6 ohms ±0.6ohm
the time of attached output-transformer wearing: 600ohms
|Maximum permissible input
|Output sound pressure level
||97 dB/W (with 50cm)
|Play frequency band
||80Hz-10000Hz±5dB (survey data attachment)
|The minimum resonance frequency
||5% or less (Input 1W, 100Hz or more)
|Magnetic flux density
|Effective oscillating radius
|Equivalent mass of a vibration system
|Equivalent Q0 of a vibration
|Voice coil diameter
|The total magnetic flux
|The diameter of baffle opening
||Width 173x depth of 94mm
||Nothing [ transformer ]: 0.75kg
weight: 1.2kg (transformer included)