ATC SCM20T
¥ 480,000 (1 unit, around 1994)
Commentary
This speaker system is based on the SCM20 and uses a tall boy enclosure.
The basic design and internal volume are the same as those of the SCM20, and the extension part corresponding to the stand is sound tuned as a pure stand.
A 18 cm cone type woofer is installed in the low range.
This unit has a structure in which a short voice coil of 8 mm width moves in a magnetic circuit in which the gap length is set to 20 mm, which is several times longer than usual, and realizes high linearity and low distortion factor.
A 2.5 cm soft dome type tweeter is installed in the high range.
Uses an independent woofer / tweeter input terminal for bi-wiring connection and bi-amplifier drive.
A large air-core coil and a high-pressure metalized polypropylene condenser are used in the network section.
Thick aluminum plates are stacked on the bottom of the cabinet to prevent harmful resonance and to enhance the stability of the installation surface. In addition, spikes can be used.
A 36 mm thick baffle board is used to eliminate unnecessary vibration.
The exterior has a walnut finish.
Model Rating
Method | 2-Way, 2-Speaker, Sealed System, Tall Boy Type |
Units Used | For low band : 18 cm cone type For high-pass : 2.5 cm dome type |
Frequency characteristic | 60 hz to 20 khz -6dB 80 Hz to 12 kHz ± 2 dB |
Directional property | Horizontal ± 90 °, Vertical ± 10 ° |
Output sound pressure level | 83dB/W/m |
Maximum sound pressure level | 108 dB SPL (1m, continuous input) |
Recommended amplifier output | 100W ~ 300W |
Impedance | 8 Ω |
Crossover frequency | 2.8kHz |
External dimensions | Width 239x Height 1023x Depth 333 mm |
Weight | 31.25kg |