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Summary of Contents for ATC PRO Series
- Page 1 S C M 2 5 A P r o M k 2 S C M 2 5 A i P r o M k 2 C o m p a c t A c t i v e 3 - w a y S t u d i o M o n i t o r M A N U A L...
- Page 2 Read instructions – all the safety and operating instructions should be read before the appliance is operated. S E C T I O N O N E S E C T I O N S E V E N Retain these instructions – the safety and operating instructions should be retained for future reference. 1.
- Page 3 Goodmans, where many of the names that went on to found British loudspeaker companies began their careers, he struck out on his own. The premise on which ATC began is a simple one, and one that in many respects is still true today: hi-fi loudspeakers tend to be detailed and accurate but of limited dynamic range, while professional monitor speakers tend to express the opposite character .
- Page 4 The 3-way monitors both feature proprietary drive units designed and manufactured by ATC . Low frequencies < 380H z are handled by a 6.5”/164 mm bass driver, mid-range frequencies between 380H z & 3 . 5 k H z by the ATC 3”/75 mm soft dome mid-driver. High frequencies > 3 . 5 k H z are handled by ATC ’s SH25 - 76S Dual-Suspension 1 ”...
- Page 5 R o o m I n t e r a c t i o n The room in which a loudspeaker is placed can be thought of as a filter, altering the acoustic response at the listening position from that of the loudspeaker.
- Page 6 • The low frequency balance of a loudspeaker is heavily influenced by the room. If the balance is bass heavy/bass light, experiment with positioning and apply room treatment before resulting to equalisation. M 8 e y e b o l t •...
- Page 7 ATC for advice. The mains connection must always be earthed. prevent a degradation in sound quality. Long cable runs require the use of a larger gauge cable. ATC recommend a minimum cable conductor area of 2 . 5 mm / 14G for cable runs of up to 5m/16’...
- Page 8 1 NL8 to NL8 using 6 or 8-core speaker cable. Cables use connector pairs 1, 3, 4 wired pin-to-pin. Connector pair 2 is not connected. ATC recommend a minimum cable conductor area of 2 . 5 mm / 14G for cable runs of up to 5 m/ 16 ’ and 4 . 0 mm / 12G for runs up to 10 m/ 33 ’...
- Page 9 When the switch is in the upward position the switch lamp is not illuminated and the loudspeaker is powered off. Due to the nature of the electronics in ATC active loudspeakers it is quite normal for a sound to be heard from the speaker when the power is applied or disconnected.
- Page 10 Front Panel Display Indicates operational state. The R2 - 234 Pro has two bi-colour LED s mounted in the front panel, the R2 - 234 Pro has three. Each LED is linked to a corresponding amp channel (See diagram 9). The LED is lit Green when the amplifier is powered on.
- Page 11 The ear and brain tend to interpret distorted sound as loudness and thus underestimate the actual level of undistorted sound. The SCM25A Pro M k 2 and SCM25A i Pro M k 2 , like all ATC monitors, demonstrate much lower levels of distortion than conventional systems of a similar size and it is therefore advisable to begin listening at an artificially low level and carefully increase the volume.
- Page 12 Input Sensitivity Control: Continuously Variable from 2 . 2 d B u – 8 . 2 d B u/1Vrms – 2Vrms (-6dB). Limiter: ATC Active FET Momentary Gain Reduction, limiter ‘active’ indicated via front panel LED . Mains Input: 220 - 230V or 1 15V – Factory set. Please observe panel markings and labels! Power Consumption: Idle 24W / 35VA .
- Page 13 S C M 2 5 A i P r o M k 2 A c o u s t i c / L o u d s p e a k e r S p e c i f i c a t i o n s Bass: 1 x SB50 - 164SC 8 Ω...
- Page 14 Bass Boost Control: Continuously variable from 0 d B to + 3 d B . Limiter: ATC Active FET Momentary Gain Reduction, limiter ‘active’ indicated via LED on speaker front panel. Power/Clip LED Output: 1 x Rear Panel Mounted 5-Pin Female XLR .
- Page 15 Speaker Level Output: Rear Panel Mounted Neutrik NL8 Bass Boost Control: Continuously variable from 0dB to +3dB. Limiter: ATC Active FET Momentary Gain Reduction, limiter ‘active’ indicated via LED on speaker front panel. Power/Clip LED Output: 1 x Rear Panel Mounted 5-Pin Female XLR.
- Page 16 W a r r a n t y All ATC products are guaranteed against any defect in materials or workmanship for a period of two years from the date of purchase. Within this period, we will supply replacement parts free of charge provided that the failure was not caused by misuse, accident or negligence. Purchasers who complete the Product Registration process, either by returning a completed Warranty Card to ATC or by registering the product at www.atc.audio, will have their warranty period extended up to a period of six years from the date of purchase.
- Page 17 Loudspeaker Technology Ltd Telephone +44 (0)1285 760561 Gypsy Lane Email: info@atc.audio Aston Down Website: www.atc.audio Stroud Gloucestershire Acoustic Transducer Company is the trading name. GL6 8HR United Kingdom is the registered trade mark of Loudspeaker Technology Ltd.
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