Instruction/ maintenance manual of the product BlueTube DP Presonus
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USERS MANUA L ? 2004, PreSonus Audio Electronics, Incorporated. All rights reserved ..
2 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 fro m the date of original retail purchase. This warranty is enforceable only by the original retail purchaser.
3 1 Overview 1.1 Intro duction 1.2 Features 2 Controls & Connections 2.1 Front Panel Basic Layout 2.2 Preamplifier Section 2.3 Back Panel Basic Layout 3 Operation 3.1 Dynamic Microphones 3.2 Phantom Powered Microphones 3.3 Instrument Input 3.4 Some Thoughts on Vacuum Tubes 4 Technical 4.
4 1. 1 INTRODUCTIO N Thank you for purchasing the PreSonus BLUETUBE DP two c hannel Dual P ath mic/instrument p reamp lifier . 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 DP to be an exceptional sounding unit and an exceptional value.
5 noise performance and wide dynamic control. This gives the BLUETUBE DP the ability to boost your signal without increasing unwanted backgro und noise.
6 input. ? Tube Drive. The BLUETUBE DP provides a Tube Drive poten tiometer on each channel for controlling the amount of saturation produced by the 12AX7 vacuum tube . Greater levels of tube saturation give the signal greater warmth and a richer sound.
7 2.1 FRONT PAN E L BASIC LAYOUT T he front panel of the BLUETUBE DP has analog VU meters for channel 1 and 2 to the far left and far right respectively , which measure the input level . VU stands for ‘ volume unit ’ , which is an average measurement of the input signal leve l.
8 Phantom Power is available to each channel input of the BLUETUBE DP . The 48 volts is supplied by way of the XLR connector for condenser mics and any other devices requiring continuous power through the XLR input. This power is supplied at a constant level allow ing use of both inputs simultaneously.
9 signal that you ’ ll need. Tube Drive. The BLUETUBE DP Tube Drive control increases th e amount of saturation produced by the 12AX7 vacuum tube . The Tube Drive can be turned on or off, and t he effect achieved by this procedure can be subtle to extreme, depending on the setting being used.
10 2. 3 BACK PANEL BASIC LA YOUT PIN 1 GND PIN 2 High (+) 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 ( -) Ca ble Wiring Diagr am for Input and Output ¼ ” TS Plug The Output ¼” TS Connector is unbalanced and operates at - 10dBv .
11 3.1 DYNAMIC MICROPHO NES Dynamic microphones are characterized by lower output levels. Hence, more gain is needed to amplify a dynamic mic rophone to operating level. Occ asionally it is necessary to engage the – 20dB pad to the microphone to avoid distortion (e.
12 3.4 SOME THOUGHTS O N VACUUM TUBE S The BLUETUBE DP comes supplied with a 12AX7 vacuum tube that meets or exceeds the stated performance criteria for the unit. We expect some owners of the BLUETUBE DP will try different tubes to investigate the various performance possibilities they might provide.
4.1 T ECHNICAL SPECIFICAT I ON S BLUETUBE D P Technical Specifications : Number of Channels Two Performance THD + Noise (Unweighted) 0.0 0 5%@0dBTubeDrive 10% @ 100 % Tube Drive Noise Floor - 94dBu Signal to Noise >90dB Power Supply Reject ion >98dB Amplifier Typ e Dual Path Input Connectors Neutrik ? Combo Input Impedance, XLR 1.
An important point after buying a device Presonus BlueTube DP (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Presonus BlueTube DP yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Presonus BlueTube DP - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Presonus BlueTube DP you will learn all the available features of the product, as well as information on its operation. The information that you get Presonus BlueTube DP will certainly help you make a decision on the purchase.
If you already are a holder of Presonus BlueTube DP, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Presonus BlueTube DP.
However, one of the most important roles played by the user manual is to help in solving problems with Presonus BlueTube DP. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Presonus BlueTube DP along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
