ATC HIFI Series Manual

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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.

C 4 S u b M k 2

12 " S U B W O O F E R | M A N U A L

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Summary of Contents for ATC HIFI Series

Page 1 C 4 S u b M k 2 12 ” S U B W O O F E R | M A N U A L 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.
Page 2 14 Servicing – the user should not attempt to service the appliance beyond those measures described in the operating instructions. All other servicing should be referred to qualified service personnel. Please contact your local ATC dealer or distributor. 15 Grounding or polarisation – precautions should be taken so that grounding or polarisation means for the appliance are not defeated.
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: hifi loudspeakers tend to be detailed and accurate but of limited dynamic range, while professional monitor speakers tend to express the opposite character .
Page 4 2. 1 The ATC C4 S ub M k 2 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 and passive loudspeaker range. Its performance and features make it ideally suited to use within stereo, multi-channel surround and immersive audio systems.
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 Balanced ( XLR to XLR ) connection offers lower noise and better immunity to “hum” pick-up. Unbalanced in an alternative territory, please contact ATC for advice. The mains connection must always be earthed. ( XLR to Phono or Two Pole Jack) connection carries risk of hum caused by multiple signal earths.
Page 7 P o w e r o n / o f f DIAGRAM 4 Powers the subwoofer on or off. When the button is in the inward position, the loudspeaker is powered on. When the button is in the outward position, the subwoofer is powered off. L e v e l a n d G a i n Sets the overall sensitivity of the subwoofer.
Page 8 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. Please contact your ATC dealer or distributor, details can be found at www.atc.audio. If the Fault LED is no longer illuminated, the amplifier had shut down safely due to reaching high temperatures.
Page 9 All ATC loudspeakers deliver significant low frequency output, more so with the larger monitors in the range, therefore there will always be some degree of acoustic overlap between the subwoofer and stereo loudspeaker in this configuration. Applying an external high pass filter to the main loudspeakers will introduce phase shift in the main loudspeakers and should be avoided where possible.
Page 10 SCM150ASL * In case of a passive system the required subwoofer gain setting will depend on the gain of the amplifier used. Example shown is based on the ATC P1. The recommended initial settings are shown opposite in Diagram 9.
Page 11 The choice of loudspeaker model and the number of subwoofers required in any system is dependent on room size, mix format and target The system shown is an example and other configurations are available. calibration level at the listening position. Diagram 11 can be used as a guide to determine suitable partnering system elements from the ATC HiFi product range.
Page 12 Low Pass Filters: 50H z, 65H z, 80H z, 320H z. (- 6 d B , 4th order Linkwitz Riley). begin listening at an artificially low level and carefully increase the volume. It is also possible for the ATC systems to produce sufficient sound pressure MaxSPL: 1 10 d B continuous, 1 16 d B peak ( IEC Weighted Pink Noise, measured at 1m, half space, low pass filter set at 80H z).
Page 13 P h y s i c a l s p e c i f i c a t i o n C4 Sub Mk2 WEIGHT – 42KG | DIMENSIONS – SEE DIAGRAM 16 " 16 " 16 " 16 " 8 "...
Page 14 10.1 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.

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