ATC SCM50
¥ 1,080,000 (2 units 1 set, sold in March 1991)
Commentary
A middle-size monitor speaker system using a cabinet with an internal volume of 50 liters.
A 24 cm cone type woofer, SB75-234 is mounted in the low range.
75 mm diameter aluminum bobbin and voice coil of edgewise wound copper ribbon are adopted, and even for high power input, it is designed to be placed in uniform magnetic flux to obtain uniform linearity and braking force.
The mid-range is equipped with SM75-150 which is 7.5 cm soft dome type mid-range.
This unit contains a magnetic circuit with a gap length of 5 mm, similar to an ordinary woofer, and an edge-wise copper ribbon voice coil with a winding width of 3.5 mm. The coil diameter is 75 mm, the same as the dome diameter. Coupled with a double suspension mechanism, this unit can withstand at least 10 times the power of a typical mid-range radio and has an extremely wide and smooth directivity.
The SH25-100, a 2 cm soft dome tweeter, is installed in the high range.
The enclosure is a bass reflex type with an internal volume of 50L using MDF material.
In addition, the front baffle is removable for professional maintenance.
The exterior has a walnut natural wood finish and is waxed after being sealed with satin lacquer.
The final adjustment before shipment is done strictly with the stereo pair.
.jpg)
Model Rating
| Method | 3-Way, 3-Speaker, Bass reflex system, Bookshelf Type |
| Units Used | For Low Band : 24 cm Cone Type (SB75-234) For Middle Area : 7.5 cm Dome Type (SM75-150) For High Range : 2 cm Dome Type (SH25-100) |
| Frequency characteristic | 40 hz to 20 khz -6dB |
| Impedance | 8 Ω |
| Max Input | 200W continuous 300W (peak) |
| Output sound pressure level | 85dB/W/m |
| Crossover frequency | 400 Hz, 4 kHz |
| Recommended amplifier output | 50W ~ 500W |
| External dimensions | Width 304x Height 716x Depth 333 mm |
| Weight | 54kg |
| Attachment | Speaker stand |
.jpg)