SCS70 Pro SCS70iW Pro PRO SERIES High-performance active subwoofer ACCOUSTIC E N G I N E E R S R Loudspeaker Technology Ltd Gypsy Lane Aston Down Stroud Gloucestershire GL6 8HR United Kingdom Telephone +44 (0)1285 760561 Email: info@atc.audio Website: www.atc.audio MANUAL ACCOUSTIC E N G I N E E R S R Acoustic Transducer Company is the trading name. R is the registered trade mark of Loudspeaker Technology Ltd.
Retain these instructions – the safety and operating instructions should be retained for future reference. 3 Heed warnings – all warnings on the appliance and in the operating instructions should be adhered to. 4 Follow instructions – all operating and other instructions should be followed. 5 Water and moisture – the appliance should not be used near water, for example near a bathtub, wash bowl, kitchen sink, laundry tub, in a wet basement or near a swimming pool etc.
SECTION ONE 1.0 Introduction Welcome. In selecting ATC you have chosen an example of the finest audio engineering available. ATC was founded on a principle of engineering aerospace or motor sport. But the results are worth the effort and the cost. ATC loudspeakers, with their unique in-house designed drivers, excellence, and that principle still defines our products today.
SECTION TWO 2.0 Product Description The ATC SCS70 Pro is a high-performance 12”/300 mm active subwoofer, designed from the ground up to deliver the exceptional levels of performance required to partner ATC’s active monitors. Its performance and features make it ideally suited to use within stereo, multi-channel surround and immersive audio systems. The sub features a sealed-box (infinite baffle) design, chosen for its balance of sub-bass extension and driver control.
3.1 Room Interaction SECTION THREE 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 3.3 SCS70iW Pro & R1– 300 Remote Amplifier Installation loudspeaker.
Connection Either two or three cable connections are required for each subwoofer: one for mains power and one or two for the audio signal. The mains cable 4.2 Signal Cable Options Balanced cable configuration is the preferred option, however unbalanced connection is possible. Diagrams 3 and 4 illustrate the signal cable is specifically supplied to comply with local statutory safety approvals and alternatives should not be substituted.
5.2 Level and Gain SECTION FIVE Sets the overall sensitivity of the subwoofer. Initially, the Level control should be set towards the centre of its range and only adjusted once the Frequency has been set. If one input is connected, start with the Gain switch set at +6dB. If both inputs are connected, start with the Gain switch set at 0dB. A +10dB setting is also included.
Fault Indicates a temporary or permanent amplifier fault. The Fault LED will illuminate if there is a DC fault on the amplifier or if the thermal limit of the heatsink is reached. In the rare case that the Fault LED illuminates, the subwoofer should be switched off. Ensure the subwoofer heatsink has adequate ventilation and after 45 minutes switch it back on. If the Fault LED remains illuminated the amplifier is registering a fault which should be investigated by an approved technician.
Ty p i c a l S y s t e m C o n f i g u r a t i o n s a n d R e c o m m e n d a t i o n s It is likely that a subwoofer will be used in one of two different scenarios: either as Bass Reinforcement/Extension in a Stereo System or as a discrete channel in a Multichannel Surround/Immersive Audio system. Diagram 7 – Typical Configuration – Stereo playback (Mono Sub). A monitor controller or preamplifier output is connected to the L and R Inputs of the subwoofer.
R Monitor Controller Diagram 9 – 2.1 Configuration – The subwoofer is driven by a monitor controller with a dedicated subwoofer output. Additional subwoofers may be daisy chained where more than one is required.
A single subwoofer is driven from the 0.1/Lfe channel output of a multichannel processor/monitor controller. For increased dynamic range and headroom, multiple subwoofers can be connected in series as described in Section 5.5 and 5.6. All panel settings must be set independently for each subwoofer.
Listening SECTION SEVEN The ear and brain tend to interpret distorted sound as loudness and thus underestimate the actual level of undistorted sound. ATC subwoofers, like all ATC products, demonstrate very 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.
SECTION NINE 9.3 Physical specification SCS70 PRO SCS70iW PRO R1-300 REMOTE AMPLIFIER WEIGHT – 44KG | DIMENSIONS – SEE DIAGRAM WEIGHT – 32.
SECTION TEN 10.1 Warranty 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.
