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| CORAL BL-25D |
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| 73,800 yen(one-set, around the 1980 time) |
2 way Back-Road-Horn speaker system which added the phon tweeter of the
establishment meter to BETA-10.
An H-24-phon tweeter is adopted as a unit BETA-10
which is a full-range unit, and for high regions.
These H-24 used the super
duralumin of 18-micron thickness for the diaphragm, and the edgewise volume
which adopted the streamlined wire of the quantity
specific-electric-conductivity aluminum alloy is used for it in order to measure a weight saving to a voice coil.
The level control is carried in
tweeters.
Moreover, it is also possible to use a full range of only BETA-10
by a change-over switch.
The enclosure is removing the harmful higher harmonic wave by R.D.E. (radiate
dumping effect) installed in the way which is the Back-Road-Horn enclosure
designed to BETA-10, and along which sound passes.
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| System |
2 ways, 2 speakers, CW back load phone system, and a floor type |
| Use unit |
For [ all the ] zones: 25cm corn type (BETA-10)
For high regions:
Phon type (H-24) |
| Impedance |
8ohms |
| Program sauce input |
40W |
| Crossover frequency |
6000Hz |
| Output sound pressure level |
101dB/W-m |
| Dimensions |
Width 450x height 880x depth of 440mm |
| Weight |
36kg |
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