Related Manuals for Alesis EC-2
Summary of Contents for Alesis EC-2
- Page 1 EC-2 96kHz Sample Rate Upgrade A/D and D/A Converter Cards for the ADAT HD24 Hard Disk Recorder ’ WNER ANUAL ERSION ADAT HD24 1.05 PPLIES TO SOFTWARE ERSION AND ABOVE...
- Page 2 EC-2 96kHz A/D/D/A upgrade • appendix A © 2002 Alesis. All rights reserved. Reproduction in whole or in part is prohibited. Specifications Subject To Change Without Notice. 7-51-0107-A 6/2002 EC-2 Manual...
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Page 3: Table Of Contents
This document covers only those aspects unique to the EC-2 cards and should be kept with the HD24 manual. Table of Contents Important Safety Instructions ... 2 Safety symbols used in this product ... 2 CE Declaration of Conformity... 2 About the EC-2... -
Page 4: Important Safety Instructions
Alesis ADAT HD24. It provides 24 simultaneous channels of balanced +4 dBu analog audio inputs and outputs via 48 1/4” TRS type jacks. The EC-2 is installed directly inside the HD24’s rear panel, in place of the original A/D and D/A boards, for simple system integration and flexibility. -
Page 5: Installing The Ec-2 Into The Hd24
Installing the EC-2 into the HD24 Precautions The EC-2 boards should only be installed by a dealer or trained technician. should only attempt installation if they have experience with this type of procedure. If any of the following instructions are not clear to you, please have a dealer or trained technician install it for you. -
Page 6: Anti-Static During Installation
4 . Disconnect the 26-pin flexible ribbon cables from the existing converter PCBs and the main PCB, and remove them completely. New 26-pin cables are attached to the EC-2 daughterboard—the old ones will not be used. 5. Remove the 24 nuts and washers on the 1/4”... -
Page 7: Analog Input (A/D) Board
Install the new EC-2 PCBs 7. Find the daughterboard in the EC-2 package: it has two 26-pin flexible cables attached to it. Insert the ribbon connector labeled “J4 TO MAIN PCB” on the daughterboard into the 26- pin header labeled on the main PCB as “J15 TO A/D PCB”. -
Page 8: Using The Ec-2
If it’s not detected, unplug the unit and check all connections carefully, disconnecting and connecting each, then trying again to see if the EC-2 is detected. Contact Alesis Product Support or an authorized service center if the cards are still not detected. -
Page 9: Ec-2 Manual
(and on the original HD24 boards). As a result, if you plug the output of the EC-2 into an unbalanced input, the nominal output will be –2 dBu, 6 dB less than if the EC-2 was seeing a true balanced load. -
Page 10: About The Ec-2'S Audio Performance
1000-watt amplifier. Because of the logarithmic nature of human hearing, to most people, each -10 dB of difference sounds “half as loud”, so the noise floor of the EC-2 will be perceived as 1/4 that of a standard CD. -
Page 11: Ec-2 Manual
The Art of Digital Audio, by John Watkinson.) EC-2 Manual appendix A • EC-2 96kHz A/D/D/A upgrade However, a digital filter with perfectly flat phase response still filters out frequencies above 20 or 22 kHz. Good analog tape recorders are capable of recording beyond 30 kHz. -
Page 12: Extending The Frequency Range Of Other Studio
20-20 kHz spec, not the 44 kHz range that the EC-2 can record. Many devices treat anything above 20 kHz as nothing more than noise and may have low-pass filters that cut it off. -
Page 13: Using The Hd24/Ec-2 With Computer
Basic Recording and Playback the HD24 manual, High sample rate operation If you want to use the HD24/EC-2 with a workstation or digital mixer at the 88.2/96kHz sampling rates, the question to ask the manufacturer of the other unit is: support the ‘sample-split’... -
Page 14: Using The Hd24/Ec-2 With The Alesis Ai-4 Aes/Ebu Interface
EC-2 96kHz A/D/D/A upgrade • appendix A Using the HD24/EC-2 with the Alesis AI-4 AES/EBU Interface The Alesis AI-4 AES/EBU Digital Audio Interface is a single-rack space unit available from your Alesis dealer that lets you connect ADAT Optical input and output signals to industry-standard AES/EBU digital signals, eight channels at a time. -
Page 15: Specifications
All measurements done over a 22 Hz - 22 kHz range with 1 kHz sine wave at +18dBu (-1dBFS) input unless otherwise specified. Impedances are measured at 1 kHz. © 2002 Alesis. Specifications Subject To Change Without Notice. All rights reserved. Reproduction in whole or in part is prohibited. 7-51-0107-A 6/2002...
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