DIATONE 2S-2503P Monitor-7
¥ 130,000 (1 unit, around 1979)
Commentary
A monitor speaker system developed in 1977 (1977).
The 2S-2503P is a speaker system with a small floor space for monitoring in a small studio.
In terms of sound quality, it follows the sound quality of the AS-3001S model, and it was designed and manufactured after thorough sound quality comparison.
It adopts a passive radiator system, and by using a 25 cm cone type passive radiator, it is possible to uniformly reproduce sound in the low frequency band.
A 25 cm cone type woofer is installed in the low range.
This unit uses a nickel-base alloy FN ring with excellent linearity in magnetization characteristics near the magnetic pole gap of the magnetic circuit, thereby suppressing distortion in the glaze range to less than -50dB (0.3%) and realizing clear reproduction.
In addition, sufficient anti-vibration measures have been taken by adopting die-cast frames and bases.
A 5 cm cone type tweeter is installed in the high range.
Two V-shaped reinforcing bars are used inside the enclosure to reduce vibration and prevent the box from ringing.
There were exclusive casters and exclusive amplifiers sold separately.
Model Rating
| Method | 2-way, 2-speaker, passive radiator system, floor type |
| Configuration such as unit | For low band : 25 cm cone type For high-pass : 5 cm cone type Passive radiator : 25 cm cone type Network : dedicated network |
| Playback frequency band | 60 Hz to 17 kHz |
| Input impedance | 8 Ω |
| Crossover frequency | 1.5kHz |
| Output sound pressure level | 90dB/W/m |
| Maximum allowable input | 60W |
| Distortion factor | 5% or Less (at Input 20W) |
| External dimensions | Width 297x Height 900x Depth 271 mm |
| Weight | 21kg |
| Sold Separately | Monitor Amplifier MA-601P (¥ 190,000) Caster MC-1390 (¥ 28,000) |