Alcons ALC2 User Manual Download Page 3

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ALC2 User’s Manual. Rev. 01

Table of contents ________________________________________________

1. Introduction

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2. Important safety instructions

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3. Precautions

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4. Installation

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5. Overview

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6. Connections

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7. Operation

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8. Safety

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9. Service and support

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10. Specifications

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11. Block diagram

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Summary of Contents for ALC2

Page 1: ......

Page 2: ...Certificates _____________________________________________________...

Page 3: ...____________________________________________________________________________________________ 12 6 Connections __________________________________________________________________________________________...

Page 4: ...capacitor bank with a large dynamic reserve for sustained high power output even in two ohm loads In order to maintain strict quality standards all Alcons products are burned in and thoroughly tested...

Page 5: ...rom over excursion and power overload dedicated filtering The fixed cross over settings cater for the best system performance optimised power response The SDP module adjusts the RMS and peak values to...

Page 6: ...d temperatures thus keeping fan noises to a minimum RF and ultrasonic protection A RF sensing circuit is continuously monitoring the inputs of the ALC2 to detect ultrasonic energy When RF energy is de...

Page 7: ...alked on or pinched particularly at plugs convenience receptacles and the point where they exit from the apparatus 11 Only use attachments accessories specified by the manufacturer 12 Use only with th...

Page 8: ...le it is switched on Always shut off the amplifier when making connections to it and mute the inputs when making connections to preceding equipment in the chain Do not spill water or any other liquid...

Page 9: ...ely Only you the consignee may initiate a claim for shipping damage Be sure to save all packing materials for the carrier s inspection Please save the packing material If you ever need to ship the amp...

Page 10: ...fier cools down to a safe value normal operation is resumed Make sure that there is an adequate supply of fresh air in front of the amplifier and that there is sufficient space in the rack for the exh...

Page 11: ...e component side up in the SDP connectors The upper connector is for channel 1 or mono bridge mode operation the lower one is for channel 2 The modules lock into position and do not need to be secured...

Page 12: ...ier reaches its maximum output voltage Continuous clipping will trigger the amplifiers active clip limiter circuits 4 Protect LED These LEDs indicate a number of fault conditions Flashing indicates hi...

Page 13: ...this switch is set to the right hand or ON position the signal on the channel 1 input connector is also fed to the channel 2 input circuitry In this mode each channel uses its own SDP module and gain...

Page 14: ...r 5 Outputs CH1 Two four pole Speakon connectors are installed to connect your loudspeakers to the channel 1 amplifier 6 Link CH2 output This three pole male XLR connector is internally hardwired to t...

Page 15: ...each channel two Speakon connectors are available which are connected in parallel Due to the SIS Signal Integrity Sensing feature on the ALC2 there are four connections per channel instead of two The...

Page 16: ...nections __________________________________________________ The Speakon connector is wired as follows Speakon male plug viewed from the wiring side 1 Output 1 Output 2 Sense 2 Sense Normal loudspeaker...

Page 17: ...rs 4 1 2 5 1 6 1 1 7 8 4 9 3 1 2 1 14 5 9 3 6 0 4 1 20 meters 5 4 3 3 2 1 1 4 10 2 6 4 4 1 2 8 18 5 12 0 7 8 5 4 25 meters 6 6 4 1 2 6 1 7 12 4 7 8 5 0 3 4 22 1 14 5 9 6 6 6 30 meters 7 8 4 9 3 1 2 1...

Page 18: ...set both DIP switches behind the cover on the front panel to the left hand position In stereo mode connect your loudspeakers with or without SIS to the channel 1 and channel 2 outputs and your signals...

Page 19: ...to the right hand or ON position Use parallel mode when you want to drive both channels with one signal while keeping separate control of both channels SDP processing and gain In parallel mode connect...

Page 20: ...n you want to combine the power of two amplifier channels into one loudspeaker load In bridge mode connect your loudspeaker with or without SIS to the channel 1 and channel 2 outputs as shown above Co...

Page 21: ...tion in addition to the data port connection only the AC mains and loudspeakers need to be connected and so the Data port caters for reduced set up and installation time and standardised in and output...

Page 22: ...he amount of overdrive When a clip LED is flashing it is recommended to decrease the signal level to the amplifier Protect The red protect LEDs indicate a number of conditions 1 RF on the input When a...

Page 23: ...the amplifier between stereo and mono bridge mode In bridge mode the channel 1 input feeds the entire amplifier Gain is controlled by the channel 1 gain potentiometer In this mode only the channel 1...

Page 24: ...l load the fan will force a very large volume of air through the heat sinks If either one of the heat sinks or the toroidal power transformer surpasses the maximum allowed temperature the ALC2 tempera...

Page 25: ...________ AC inrush limiter The AC inrush limiter is active when the ALC2 is switched on The AC mains inrush current is limited to a safe value However take care not to switch on too many amplifiers at...

Page 26: ...which has been damaged because of any misuse accident or negligence Warranty also does not extend to a new Alcons product if the serial number has been defaced altered or removed What we will do Alcon...

Page 27: ..._______________________________ Contact information Mailing address Alcons Audio BV De Corantijn 69 1689 AN ZWAAG The Netherlands Telephone Facsimile Telephone 31 0 229 283090 Fax 31 0 229 283099 Worl...

Page 28: ...________________________________________________________________________________ 70 dBu A wght Slew rate 8 ___________________________________________________________________________________ 40 V s Da...

Page 29: ...ALC2 User s Manual Rev 01 29 11 Block diagram________________________________________________...

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