Datasheet

23.62
600.0
13.90
353.0
11.81
300.0
4.13
105.0
9.13
232.0
14.76
375.0
16.30
414.0
14.69
373.0
Technical
Data Sheet
SCM45A Pro:
high performance
3-way compact
active loudspeaker
Loudspeaker Technology Ltd
Gypsy Lane
Aston Down
Stroud
Glos
Gl6 8HR
England
Tel: [phone]
Fax: [phone]
email: [e-mail]
web: www.atcloudspeakers.co.uk
key features
Ÿ
Ÿ Proprietary ATC 25mm/1” Dual Suspension Super Tweeter
Ÿ ATC hand built 3”/75mm Soft Dome mid-range driver.
Ÿ 2 x ATC hand built 6.5”/164mm carbon-paper cone bass drivers.
Ÿ On-board grounded source 235 watt Class A/B Tri-amplifier.
Ÿ Compact size with high output and low cut-off frequency.
Ÿ 6 year warranty.
specifications
Ÿ drive units bass: 1 x 6.5”/164mm short-coil carbon-paper cone
mid: 3”/75mm Soft dome
hf: 1”/25mm Soft dome
Ÿ amplitude linearity 70Hz - 17kHz (+/-2dB)
Ÿ cut-off frequencies 42Hz - 25kHz (-6dB freestanding)
Ÿ horizontal dispersion +/-80° coherent
Ÿ vertical dispersion +/-10° coherent
Ÿ maximum continuous SPL 112dB (per pair at 1m)
Ÿ
Ÿ audio input rear panel mounted female xlr (pin 2 +)
Ÿ input sensitivity 1V rms (ref. full output)
Ÿ input sensitivity trim 0dB to -6dB (continuously variable)
Ÿ input impedance balanced >10kΩ
Ÿ amplifier output power bass: 150W rms
Ÿ mid: 60W rms
Ÿ hf: 25W rms
Ÿ crossover frequencies 380Hz & 3.5kHz
Ÿ crossover filters 4th order critically damped with phase compensation
Ÿ low frequency boost 0dB to +3dB at 40Hz (continuously variable)
Ÿ overload protection active FET momentary gain reduction
Ÿ mains power requirements 115/230V, 50/60Hz via rear panel switch. 100v 50/60Hz factory set
Ÿ mains power consumption 56VA (standby max), 154VA (typical 1/8th power), 375VA (max)
Ÿ thermal output 53W (idle), 130W (1/8th power)
Ÿ weight 36kg/79lbs
physical dimensions
dimensions in mm and [inches]
Acoustic Transducer Co. Is a trading name and is the registered Trade Mark of Loudspeaker Technology Ltd.
®
ATC reserve the right to change specifications without prior notice
notes
1. Mid-range dome is the reference listening axis
2. If flush mounted, allow 50mm/2” free space either side and
above the heatsink and a supply of fresh cool air.