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Summary of Contents for Alto STEREO TUBE PREAMP
- Page 1 User's Manual MICtube STEREO TUBE PREAMP www.altoproaudio.com Version 2.3 September 2005 English...
- Page 2 SAFETY RELATED SYMBOLS CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN This symbol, wherever used, alerts you to the presence of un-insulated and dangerous voltages within the product enclosure. These are voltages that may be sufficient to constitute the risk of electric shock or death. This symbol, wherever used, alerts you to important operating and ma- intenance instructions.
- Page 3 Operating Conditions Always install in accordance with the manufacturer's instructions. To avoid the risk of electric shock and damage, do not subject this product to any liquid/rain or moisture. Do not use this product when in close proximity to water. Do not install this product near any direct heat source.
- Page 4 Preface Dear Customer, Thanks for choosing LTO Stereo Tube Preamplifier and thanks for choosing one of the results of LTO AUDIO TEAM job and researches. For our LTO AUDIO TEAM, music and sound are more than a job...are first of all passion and let us say...our obsession! We have been designing professional audio products for a long time in cooperation with some of the major brands in the world in the audio field.
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Page 5: Table Of Contents
TABLE OF CONTENT 1. INTRODUCTION ...5 2. FEATURE LIST ...5 3. CONTROL ELEMENTS ...5 3.1 The Front Panel a. Guidepost of The Front Panel b. Supplementary Descriptions 3.2 The Rear Panel a. Power Supply Connection b. Analogue Inputs/Outputs 4. INSTALLATION & CONNECTION...8 4.1 Mains Connection 4.2 Audio Connection a. -
Page 6: Introduction
High quality and fidelity components SMD Technology for top performance Manufactured under QS9000, VDA6.1 certified management system 3. CONTROL ELEMENTS 3.1 The Front Panel: MICtube STEREO TUBE PREAMP MIC INPUT1 MIC INPUT2 (10) LTO products by purchasing MICtube you have acquired an... -
Page 7: Guidepost Of The Front Panel
a. Guidepost of the front panel Power LED CHANNEL 1 Output Level Display LED CHANNEL 2 Output Level Display LED Phantom Power Switch (5)(6) Phase Reverse Switch (7)(8) 20dB PAD (9)(10) Combination Microphone (XLR) and Instrument (1/4 inch) input (11)(13) Input Gain Control (0 to 30 dB) (12)(14) Drive Control (0 to 40 dB) b. -
Page 8: The Rear Panel
-10dBV ) or professional level (+4dbu). When the gain is too low, the tube effect becomes less audible and the S/N (Signal to Noise) ratio deteriorates. Generally, Dynamic mics and instruments without preamps will require more gain than con- denser mics and instruments that have a built-in preamp. If you should require more signal out of the preamp for a hotter recording level, cranking up the gain should provide all the signal that you'll need. -
Page 9: Installation & Connection
Follow the configuration examples below for your particular connection. LTO. presents with balanced XLR connectors Ring Ring Sleeve TRS Type Balanced TRS Type Unbalanced Pin3 (-) Pin1 ( ) XLR Type alanced MICtube Stereo Tube Preamp provides XLR con- Sleeve Pin2 (+) -
Page 10: Rack Mounting
The height conforms to single-space mounting, and up to two Preamplifier may be mounted side-by-side in a standard universal EIA 19" equip- ment rack. MICtube STEREO TUBE PREAMP OUTPUT / CHANNEL1 -24 -18 -12 -6 +6 +12... -
Page 11: The Mictube As A Direct-Injection Ox (Di Box) B
On the output side, which may damage subsequent devices, so you should turn down all the level controls beforehand, or you can press the 20dB Pad (7/8) to attenuate the incoming signal level about 20dB, then hook up a microphone to the XLR and 1/4"... -
Page 12: Technical Specifications
6. TECHNICAL SPECIFICATIONS 6.1 Block Diagram... -
Page 13: Specifications
6.2 Specifications Input XLR Impedance 1/4" High Z Connectors Output XLR Balanced 1/4" Unbalanced Panel Controls Tube Drive Gain Phase Reverse 20dB Pad +48V Phantom Power Performance THD + Noise Signal To Noise Power Supply Rejection Amplifier Type Meter 8-Digit LED Physical Weight Dimensions... -
Page 14: 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 15 3.5 In no event shall be liable for any incidental or consequential damages. Some states do not allow the exclusion or limitation of incidental or consequential damages, so the above exclusion or limitation may not apply to you. 3.6 This warranty gives you the specific rights, and these rights are compatible with the state laws, you may also have other statutory rights that may vary from state to state.
- Page 16 SE KAKU TECHNICAL GROUP LIMITED No. 1, Lane 17, Sec. 2, Han Shi West Road, Taichung 40151 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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