ATC SCM100sl

Commentary

This is a sl series speaker system using a super linear woofer.

In the sl series, attention is paid to eddy current strain, which is generated between the front plate and pole piece when the voice coil vibrates repeatedly when a signal is sent to the voice coil. This strain interferes with the linearity of the voice coil.
In the sl series, a newly developed material, super linear magnetic material, is used for this part. This material was developed in cooperation with a leading manufacturer in the field of magnetic materials. It retains the current equivalent to that of soft iron, but it also becomes an insulator. This material is processed into an eddy current ring, which is attached to the gap formed by the pole piece and the front plate to effectively eliminate eddy current.
The gap between the two eddy current rings is designed to be narrow to cool the voice coil and maintain the dynamic range.

A 12 inch cone type woofer is installed in the low range.
Pulp cone is used for the diaphragm.
The mid-range features a 3 inch soft dome mid-range.

A 1 inch soft dome type tweeter is installed in the high range.
Polyester dome is used for the diaphragm.

The crossover frequencies of the network section are 380 Hz and 3.5 kHz.
This is 440 Hz in the middle of the piano keyboard, which is the center frequency of music, and 380 Hz to 3.5 kHz is allocated to the mid-range with excellent response to gain sound quality benefits.
This network circuit is contained in a separate box to prevent modulation due to pressure changes and vibration inside the enclosure.

The enclosure is made of high-density MDF material with sufficient thickness. In addition, position of the reinforcement material is determined by many prototypes to suppress resonance.
The exterior has a walnut finish, and the rear RUNNET is made of materials with good sound transmission.

Steel stand is included.

Model Rating

Method	3-Way, 3-Speaker, Bass reflex system, Bookshelf Type
Units Used	For Low Band : 12 inch Cone Type For Middle Area : 3 inch Dome Type For High Frequency : 1 inch Dome Type
Frequency characteristic	32 Hz to 20 kHz -6dB 65 Hz to 12 kHz ± 2 db
Directional property	Horizontal ± 80 degrees, Vertical ± 10 degrees
Impedance	8 Ω
Maximum allowable input	300W continuous 500W (peak)
Output sound pressure level	88dB/W/m
Maximum sound pressure level	115dB/SPL/m (continuous input)
Crossover frequency	380 Hz, 3.5 kHz
Recommended amplifier output	50W ~ 500W
Input terminal	4 mm Plug / Post
Finish	Walnut finish
External dimensions	398 mm wide x 832 mm high x 503 mm deep (including sub RUNNET, by terminal)
Weight	70kg
Attachment	Steel Stand