SAFETY RELATED SYMBOLS CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN This symbol, wherever used, alerts you to the pre- sence of un-insulated and dangerous voltages with- in the product enclosure. These are voltages that may be sufficient to constitute the risk of electric shock or death.
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PREFACE Dear Customer: Thanks for choosing LTO MAC 2.2/2.3/2.4 Stereo Power Amplifier which is the result of our endeavors. LTO AUDIO TEAM music and audio are much more than a job, they are a passion and an obsession! We have been designing professional audio products for a long time in cooperation with many of the world's major brands.
TABLE OF CONTENTS 1. INTRODUCTION...4 2. FEATURE LIST...4 3. CONTROL ELEMENTS...4 3.1 The Front Panel 3.2 The Rear Panel 4. INSTALLATION & CONNECTION...6 4.1 Mains Connection 4.2 Rack Mounting 4.3 Audio Connection a. Wiring Configuration b. In Line Connection 5. OPERATION ...7 5.1 Operate MAC 2.2/2.3/2.4 in Stereo Mode 5.1 Operate MAC 2.2/2.3/2.4 in Parallel (Mono) Mode 5.1 Operate MAC 2.2/2.3/2.4 in Bridged Mode...
1. INTRODUCTION Thank you very much for expressing your confidence in Power Amplifier. With the MAC 2.2/2.3/2.4 you have acquired an extremely musical and flexible high power amplifier which is based on many years of experience and finding in amplifier technology and is used through the world in the renowned studios.
The MAC 2.2/2.3/2.4 stereo power amplifier presents three operating modes: - Stereo Mode In this mode, CHA and CHB operate independently (as a conventional stereo amplifier) The CHA input signal will be output from the CHA output connector, and CHB input signal will be output from the CHB output connector.
The most secure mounting is on a universal rack shelf available from various rack manufactures or your music dealer. The MAC 2.2/2.3/2.4 Professional Stereo Amplifier fits into one standard 19" rack unit of space.Be sure that there is enough air space around the unit for sufficient ventilation. If heat release is inadequate, this unit will retain heat inside, which may cause the protection, or even a fire.
2.2/2.3/2.4 In this mode, channel A and channel B operate independently ( as a conventional stereo amplifier). The channel A input signal will be output from the channel A output connectors, and the channel B input signal will be output from the channel B output connectors.
Input wiring tips BALANCED FROM INPUT SOURCE SHIELD CH-2 LINE CHANNEL B BALANCED INPUT LINE CHANNEL A CH-1 BRIDGED INPUT BRIDGED STEREO PARALLEL (MONO) 5.2 Operate MAC 2.2/2.3/2.4 In this mode, the channel A input signal will be output from the output connectors of both channels. The channel B input jack is not used, the channel A and B volumes can be adjusted independently.
Input wiring tips BALANCED FROM INPUT SOURCE SHIELD CH-2 LINE NO USING BALANCED INPUT LINE CHANNEL A CH-1 BRIDGED INPUT BRIDGED STEREO PARALLEL (MONO) 5.3 Operate MAC 2.2/2.3/2.4 In this mode, the channel A input signal will be output from the bridge output connectors. In this case, use the channel A volume control to adjust the volume, keep the volume control of channel B turned completely down (counterclockwise).
6.2 Caution for Speaker Connection The output capacity of MAC 2.2/2.3/2.4 stereo power amplifier is very high, be sure to use a speaker system that has sufficient input capacity. If the input capacity of your speaker system is lower than the rated output of the MAC 2.2/ 2.3/2.4 stereo power amplifier, you can protect your speakers by connecting a fuse serially between the speaker and the amplifier as shown below.
7. WARRANTY 1. WARRANTY REGISTRATION CARD To obtain Warranty Service, the buyer should first fill out and return the enclosed Warranty Registration Card within 10 days of the Purchase Date. All the information presented in this Warranty Registration Card gives the manufacturer a better understanding of the sales status, so as to purport a more effective and efficient after-sales warranty service.
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SEKAKU ELECTRON INDUSTRY (H.K.) CO. LTD. No.1, Lane 17, Sec. 2, Han Shi West Road, Taichung, 401 TAIWAN http://www.altoproaudio.com Tel:886-4-22313737 email: alto@altoproaudio.com Fax:886-4-22346757 All rights reserved to ALTO. All features and content might be changed without prior notice. Any photocopy, translation, or reproduction of part of this manual without written permission is forbidden.
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