Alto HPA6 User Manual
6-channel headphone amplifier
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- User manual (13 pages) ,
- User manual (40 pages) ,
- Owner's manual (14 pages)
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Summary of Contents for Alto HPA6
- Page 1 User's Manual HPA6 6-Channel HEADPHONE AMPLIFIER www.altoproaudio.com Version 2.0 Dec. 2002 English...
- Page 2 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.
- Page 3 HPA6 6-Channel Headphone Amplifier is the result of many hours of listening and tests involving common people, area experts, musicians and technicians.
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Page 4: Table Of Contents
Wiring Configuration b. In Line Connection 4.3 Rack Mounting 5. APPLICATION...8 5.1 Use the HPA6 as a Headphone Amplifier 5.2 Use the HPA6 as Independent Power Amplifiers 5.3 The HPA6 in Studio Application 5.4 The HPA6 in Mono/Stereo Application 6. -
Page 5: Introduction
The HPA6 6-Channel Headphone Amplifier provides Main Inputs on the rear panel and Direct In Input on the front panel to drive any or all of the 6 stereo headphone amplifiers, when using the Direct In Input, the Main Inputs signal will be interrupted automatically, the Main Outputs on the rear panel can be used to interlink any number of HPA6s for expanding. -
Page 6: The Rear Panel
1. Direct In Input The Direct In Input is used to feed the external program sources into the main signal path, comparing to the Main Input on the rear panel, this input presents the priority character. 2. Input Gain Control This control sets the input signal level coming from Main In. - Page 7 13. Fuse holder / Voltage selector You must be sure of the Voltage available in your Country because this is a Dual Voltage Unit. Voltage operation can be changed through the fuse protecting the power supply but this operation must be performed by a qualified Engineer.
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Page 8: Installation & Connection
Follow the configuration examples below for your particular connection. LTO HPA6 6-Channel Headphone Amplifier is set to LTO HPA6 6-Channel Headphone Amplifier is made by using the presents with balanced XLR connectors and 1/4" TRS phone jack and Ring... -
Page 9: Rack Mounting
This is the basic application for HPA6 6-Channel Headphone Amplifier. While using the HPA6 as a Headphone Amplifier, please apply the program source to Main / Direct In Inputs, and connect the headphone cable to one of the appropriate outputs. Ensure the Balanced Control adjusted to the complete counter-clockwise position, and turn up the Input Gain control. -
Page 10: Use The Hpa6 As Independent Power Amplifiers
5.2 Use the HPA6 as Independent Power Amplifiers Instead of using the HPA6 as the Headphone Amplifier, in many particular circumstances, it can also be conducted as the independent power amplifiers, as for this kind of application, please turn the Balanced Control to complete clockwise. -
Page 11: The Hpa6 In Studio Application
5.4 The HPA6 in Mono / Stereo Application The HPA6 6-Channel Headphone Amplifier can be switched between the Mono and Stereo operational mode via Mode Switch control. Press the Mode Switch for Mono application, the Mono LED (8) lights up. In Mono application, the input two signals are combined together and the resulting mono signal routes to both the Left and Right Head- phone Out Outputs. -
Page 12: Technical Specifications
6. TECHNICAL SPECIFICATIONS AUDIO INPUT AUDIO OUTPUT SYSTEM SPECIFICATIONS POWER AMPLIFIER FUNCTION CONTROLS FUNCTION SWI CHES INDICATORS POWER SUPPLY PHYSICAL MAIN input X R and 1/4" jack Connectors Type RF filtered, servo balanced input Impedance 50 kOhms balanced, 25 kOhms unbalanced Max.input level +21 dBu balanced and unbalanced (unity gain) typ.40 dB, >55 dB @ 1kHz... -
Page 13: Warranty
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. - Page 14 SEKAKU ELECTRON IND. 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.