ATC SCM20ASL Active Speakers

Introducing the SCM20ASL Active Speaker Pair

When perfornamce just can't be compromised

The SCM20SL Classic is ATCs flagship 2-way stand-mount loudspeaker. Ideal for modestly sized rooms where performance cannot be compromised.

Its sealed cabinet design ensures precise timing and excellent low frequency output below the cut-off. The combination of ATC mid/bass and soft-dome tweeter delivers mid-range & high frequency of exceptional clarity and the driver components shared design philosophy ensures the parts work seamlessly together.

These loudspeakers are also available in PASSIVE versions. Please see this link to the SCM20PSL.

Both versions employ ATCs renowned drive units which are painstakingly designed and manufactured by ATC in the UK.

The active SCM20ASL features an on-board 250W Amp Pack. Simply pair with a suitable pre-amplifier, DAC/pre or streaming-pre-amp for stunning results.

The active SCM20ASL replaces the passive crossover and the driving amplifier of a conventional system with a precisely matched Amp Pack, mounted to the rear of the loudspeaker cabinet. The electronic system consists of a balanced input feeding a 2nd order active electronic crossover which, in turn, feeds a pair of class A/B power amplifiers, carefully tailored to the exact requirements of the mid/bass and high-frequency drive units.

The active crossovers deliver greater precision in both level and timing and the two power amplifiers directly coupled to the drive units result in an improvement in control and dynamic range vs a passive system.

The cabinet is constructed to be heavy and inert with a combination of bracing for stiffness and damping to supress resonance. Bitumastic damping panels are deployed at critical positions to minimise cabinet colouration. It is available in a wide range of finishes.

Special Order Finishes

ATC is committed to not only ensuring that there product range offer nothing less than the best sound reproduction money can buy they're also committed to housing their stunning engineering is as bespoke a manner as possible.  That's why they offer a range of finishes to suit your personal space and style. 

Being special orders, these finishes do take a little longer to arrive, but once you set eyes on them, you'll be glad for the wait! Please call us if you have any queries. 

The full list of finishes is shown below and note that some finishes have different pricepoints.

The SCM20ASL is also available as a floor-standing tower model with identical performance in the form of the SCM20ASLT.

Technical Specifications

Mid/Bass driver
1 x 150mm/6, SB75-150SL 8

High Frequency Driver
1 x 25mm/1, SH25-76S 6

Low Frequency Cut-off
55Hz (-6dB, anechoic)

High Frequency Cut-off
25kHz (-6dB)

Matched Response
+/-0.5dB

Crossover Point
2.2kHz MaxSPL
108dB continuous
14dB peak (per pair, IEC Weighted Pink Noise, 1m, anechoic).

System Sensitivity
85dB  (@1m, pink noise, -18dBu, 1V input sens. 0dB bass boost)

Balanced Input
1 x Rear Panel Mounted Female XLR, pin 2 hot

Input Impedance
20k (differential)

Input CMRR
>60dB at (10kHz)

Input Sensitivity
2.2dBu/1Vrms for full power

Input Sensitivity Control
-6dB switchable, -6dB variable. Total adjustment 2.2dBu/1Vrms to 14.2dBu/4Vrms

Bass Shelf
-2dB to +3dB, switchable in 1dB steps

Crossover Filters
2nd Order Linkwitz Riley

Amplifier type
Grounded Source MOSFET, class A/B, convection cooled

Output Power
Bass 200W (8), H.F. 50W (8)

THD+N
Frequency Response
E&OE

*This information has been obtained from Manufacturers website. We advise that Features, Specifications & Price are subject change without notice.
450 x 250 x 411 mm 
Dimensions (H x W x D) 

Gloss White
Piano Black
Gloss Special Order Finishes - $17.495.00

Rosewood
Pippy Oak
European Walnut
Burr Poplar
Burr Magnolia
Prestige Special Order Finishes - $16,495.00

Satin Black
Satin White
Black Ash
Cherry
Standard Special Order Finishes - $14,495.00

Oak
Walnut
Colour Options - $14,495.00

Full Power 382BTU/hr
1/8th Power 311BTU/hr
Idle 89BTU/hr
Heat Output

Full Power 312W/398VA
1/8th Power 116W/116VA.
Idle 26W/41VA. 
Power Consumption

220-230V or 115V, factory set. Please observe panel markings and labels!
Mains Input

Amplifier d.c. offset and over-temperature (both indicated by rear panel LED)
Electronic amp protection

ATC Active FET Momentary Gain Reduction
Limiter

200kHz (-3dB)