Presonus Bluetube User Manual

BlueTube
Two Channel Microphone / Instrument
Tube Preamplifier
User’s Manual
Blue Tube
MICROPHONE/INSTRUMENT
TUBE PRE-AMPLIFIER
USERS MANUAL
Version 1.0
2000, PreSonus Audio Electronics, Incorporated.
All rights reserved.
PreSonus Limited Warranty
PreSonus Audio Electronics Inc. warrants this product to be free of defects in material and workmanship for a period of one year from the date of original retail purchase. This warranty is enforceable only by the original retail purchaser. To be protected by this warranty, the purchaser must complete and return the enclosed warranty card within 14 days of purchase. During the warranty period PreSonus shall, at its sole and absolute option, to either repair or replace, free of charge, any product that proves to be defective on inspection by PreSonus or its authorized service representative. To obtain warranty service, the purchaser must first call or write PreSonus at the address and telephone number printed below to obtain a Return Authorization Number and instructions of where to return the unit for service. All inquiries must be accompanied by a description of the problem. All authorized returns must be sent to the PreSonus repair facility postage prepaid, insured and properly packaged. PreSonus reserves the right to update any unit returned for repair. PreSonus reserves the right to change or improve the design of the product at any time without prior notice. This warranty does not cover claims for damage due to abuse, neglect, alteration or attempted repair by unauthorized personnel, and is limited to failures arising during normal use that are due to defects in material or workmanship in the product. Any implied warranties, including implied warranties of merchantability and fitness for a particular purpose, are limited in duration to the length of this limited warranty. Some states do not allow limitations on how long an implied warranty lasts, so the above limitation may not apply to you. In no event will PreSonus be liable for incidental, consequential or other damages resulting from the breach of any express or implied warranty, including, among other things, damage to property, damage based on inconvenience or on loss of use of the product, and, to the extent permitted by law, damages for personal injury. Some states do not allow the exclusion of limitation of incidental or consequential damages, so the above limitation or exclusion may not apply to you. This warranty gives you specific legal rights, and you may also have other rights, which vary form state to state. This warranty only applies to products sold and used in the United States of America. For warranty information in all other countries please refer to your local distributor.
PreSonus Audio Electronics, Inc. 7257 Florida Blvd. Baton Rouge, LA 70806 (225) 216-7887
2000, PreSonus Audio Electronics, Incorporated. All rights reserved.
1 Overview
1.1 Introduction 4
1.2 Features 4
2 Controls & Connections
2.1 Front Panel Basic Layout 7
2.2 Preamplifier Section 9
2.3 Back Panel Basic Layout 11
3 Operation
3.1 Dynamic Microphones 14
3.2 Phantom Powered Microphones 14
3.3 Instrument Input 14
3.4 Some Thoughts on Vacuum Tubes
3.5 Mounting Instructions
4 Technical
4.1 Specifications 16
1.1 INTRODUCTION
Thank you for purchasing the PreSonus BlueTube Two Channel Microphone / Instrument Tube Preamplifier . This pre-amp was designed using state of the art components to deliver crystal clear audio for an infinite period of time. We believe the BlueTube to be an exceptional sounding unit and an exceptional value. Please contact us at 1-800-750-0323 with your questions or comments regarding this product. PreSonus Audio Electronics is committed to constant product improvement and believes the best way to accomplish this task is by listening to the experts on our gear, our valued customers. We appreciate the support you have shown us through the purchase of this product.
Please pay close attention to how you connect your BlueTube to your system. Improper grounding is the most common cause of noise problems found in studio or live sound systems. We urge you to scan this manual before hooking up your BlueTube to familiarize yourself with its features and various applications.
Good luck and enjoy your BlueTube!
1.2 FEATURES
The following is a summary of your Blue Tube’s features:
Dual Servo Gain Stage. Each channel of your
BlueTube contains a dual servo gain stage (no capacitors). This provides ultra low noise performance and wide dynamic control. This gives
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