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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.

 

Summary of Contents for Blue Tube

Page 1: ...BlueTube TwoChannelMicrophone Instrument TubePreamplifier User s Manual...

Page 2: ...Blue Tube T W O C H A N N E L M I C R O P H O N E I N S T R U M E N T T U B E P R E A M P L I F I E R USERS MANUAL Version1 0 2000 PreSonus Audio Electronics Incorporated All rights reserved...

Page 3: ...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 workm...

Page 4: ...ont 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 o...

Page 5: ...ask 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...

Page 6: ...tch enables the user to invert the phase of a microphone if phase cancellation is noticed when using identical microphones in close proximity to one another The phase reverse switch also can compensat...

Page 7: ...tentiometer on each channel for controlling the amount of signal routed to the 12AX7 vacuum tube This feature lets you control how much saturation of the signal occurs Greater levels of tube saturatio...

Page 8: ...r from left to center and from right to center Identical preamplifier sections Channel One left to right and Channel Two right to left comprise the front panel Both preamp channels contain Combination...

Page 9: ...hones to compensate for phase cancellation It may be required that the wiring of a cable s XLR connector be switched to successfully utilize Phantom power 20 dB Pad provides 20 decibels of attenuation...

Page 10: ...ve control are up to you your application and your imagination Experiment Gain This control governs the amount of boost to the signal being processed by the pre amplifier Dynamic mics and instruments...

Page 11: ...igh PIN 3 Low Cable Wiring Diagram for Input and Output XLR The Output XLR Connector is servo balanced and operates at 4dBu TIP High SLEEVE GND Cable Wiring Diagram for Input and Output Phone Plug The...

Page 12: ...denser and some ribbon microphones require external power to pre amplify the microphone acoustic pickup These microphones typically have much higher output than dynamic microphones Hence the 20dB pad...

Page 13: ...nsverse fashion and care should be taken to properly align the pins on the tube to the corresponding holes in the receptacle Make sure the tube is completely seated in the receptacle and replace the t...

Page 14: ...ounting of the Blue Tube to the left of the Blue Max will minimize any field effect the magnetism that the Blue Max s transformer may have It should be noted that proximity to computer CPU s power sup...

Page 15: ...d 51 Ohms Output Impedance TRS Unbalanced 51 Ohms Panel Controls Tube Drive 0dB to 30dB Gain 0dB to 40dB Phase Reversal 20dB Pad 48V Phantom Power Metering 8 Segment LED 28dBu to 18dBu Power Supply Ty...

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