ED-901 Dolby surr ound AC-3 Decoder Instruction Manual DOLBY SURROUND AC-3 DECODER OUTPUT CH. MODE INPUT SELECTOR ON POWER INPUT 1 (VDP) INPUT 2 (DVD) L C PROGRAM STATUS R LS RS AC-3 ON DELAY TIME ON −10dB CINEMA Re-EQ MIDNIGHT THEATER LEF LEVEL C S CENTER SURROUND mSEC. ED-901 OFF CONTENTS Features ................................................ 2 Important Safeguards ........................... 3 Precautions .......................................... 4 Introduction ..............
Thank you for your purchase of the ONKYO ED-901 Dolby Surround AC-3 Decorder. Please read this manual thoroughly before making connections and plugging in the AC power cord. Following the instructions in this manual will enable you to obtain optimum performance and maximum listening enjoyment from your new ED-901. Please retain this manual for future reference.
Important Safeguards 1. Read Instructions — All the safety and operating instructions should be read before the appliance is operated. 2. Retain 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 use instructions should be followed. 5.
Precautions 1. Warranty card The serial number is written on the rear panel of the unit. Write the serial number and model number on your warranty card and keep it in a safe place. 2. Recording Copyright Recording of copyrighted material for other than personal use is illegal without permission of the copyright holder. 3. AC fuse The fuse is located inside the chassis and is not user serviceable. If power does not come on, contact your ONKYO service center. 4.
Introduction Onkyo’s ED-901 Dolby Surround AC-3 Decoder brings your home the excitement of Dolby Surround AC-3 sound effects from your LaserDiscs, etc. that employ the latest Dolby AC-3 technology. The ED-901 consists of an AC-3RF demodulator, an AC-3 decoder, and a Cinema Re-EQ circuit. An ideal AC-3 home theater system may include either an Onkyo TX-SV919THX or TX-SV828THX surround receiver. These receivers can be connected to the ED-901 through the DB-25 connector.
Speaker Placement Speaker Placement We recommend that you use the ED-901 in conjunction with the Onkyo TX-SV919THX or TX-SV828THX surround receiver. If you have a complete THX speaker system that is connected to either of these receivers, the addition of new speakers or arrangement of the current speaker configuration is unnecessary. If you do not have a complete THX speaker system...
Control Positions and Names NOTE: If there is a protective film on the surface of the display, making it difficult to read the display, remove it. For more information about the function of a particular button, please turn to the page listed in the brackets ([ ]) following each name. 1 2 3 4 9 10 8 6 7 5 11 DOLBY SURROUND AC-3 DECODER OUTPUT CH.
Connections · Do not plug in the power cord until all connections have been made. · Before connecting the ED-901 to the receiver, make sure that the POWER switches on both the ED-901 and the receiver are in the OFF position. · On each pair of input jacks, the lower jack (marked R: Red) corresponds to the right channel and the upper jack (marked L: White) to the left channel. · Be sure to read the Receiver Instruction Manual in addition to this manual.
Operation Note: • Before performing the following procedure, make sure that the ED-901 is properly connected to the surround receiver. • To play Dolby Pro Logic sound sources... The ED-901 is not equipped with a Dolby Pro Logic decoder. To play Dolby Pro Logic sound sources, connect the ED-901 to your receiver by audio cables and set the receiver's Input Selector to Analog Input ("VIDEO-4" for the TX-SV919THX and "VIDEO-1" for the TX-SV828THX). 3 POWER ON OFF 4 INPUT 1 (VDP) INPUT 2 (DVD) 3 4 1.
Operation Output Channel Mode Setting the Output Channel Mode (OUTPUT CH. MODE) C SURROUND 10 The highest quality Dolby Surround AC-3 sound can be reproduced when the ED-901 is connected to five fullrange THX speakers and one or more subwoofers. To get the most out of the ED-901, it is strongly recommended that you set-up a complete THX speaker system.
Operation DELAY TIME Setting the Surround Delay For Dolby Surround AC-3, as opposed to the conventional Dolby Pro Logic technology, it is unnecessary to set the time delay between front speakers and surround speakers. The only thing you should consider is the difference between the front speaker-listener distance and surround speaker-listener distance. 1. Press the DELAY TIME button repeatedly until the desired delay time is displayed. DELAY TIME The factory-set default is 5 ms (milliseconds).
Operation Re-EQ is licensed from Lucasfilm, Ltd. U.S. patent numbers 5,043,970; 5,189,703; 5,222,059. Foreign patents pending. Lucasfilm and Re-EQ are trademarks of Lucasfilm Ltd. MIDNIGHT TEATER CINEMA Re-EQ LFE LEVEL Using the Cinema Re-EQ, Midnight Theater and LFE Modes ON CINEMA Re-EQ ON MIDNIGHT THEATER −10dB LFE LEVEL 12 Using the Cinema Re-EQ Mode Press the CINEMA Re-EQ button.
Block Diagram L AC - RF DVD AC-3 Decoder 20 bit D/A LS RS C 20 bit D/A COAXIAL +10dB LFE S DB-25 OUTPUT OPTICAL R Anti-aliasing Filter VDP Digital Audio Interface AC - 3 RF Demodulator CINEMA Re-EQ 20 bit D/A SUB-WOOFER VIDEO SELECTOR VIDEO OUTPUT VDP S VIDEO Composite VIDEO S DVD VIDEO AUDIO SELECTOR L VDP AUDIO OUTPUT R L L R DVD R 13
Troubleshooting Guide • No power. Cause: Power cord is not plugged in or is not completely inserted. Remedy: Firmly plug in the power cord. • No Sound. Cause: Remedy: Cause: Remedy: Cause: Remedy: Cause: Remedy: Incorrect cord connections. Connect the cord properly. Wrong input selector. Select the proper input. Wrong position of coaxial/optical selector. Select the proper position. Wrong input mode selection on the receiver. Select the proper mode on the receiver.
Specifications Input Seneitivity: and Impedance INPUT-1,2 analog audio: 50kΩ INPUT-1 AC-3RF: 75Ω INPUT-2digital (coaxial): 75Ω INPUT-1,2video: 1Vp-p/75Ω S-video Y: 1Vp-p/75Ω S-video C: 0.28Vp-p/75Ω Output Level: D-SUB25 5.1CH OUTPUT and Impedance LEFT, RIGHT, CENTER, LEFT SURROUND, RIGHT SURROUND (SUB WOOFER) : 0.2V/470Ω Frequency response: Dolby AC-3 5CH out 20 Hz - 20 kHz+0/-3dB Distortion: L/C/R/LS/RS: 0.05%/1kHz SUBWOOFER: 0.
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