PresonusメーカーBlueTube DPの使用説明書/サービス説明書
ページ先へ移動 of 13
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.
デバイスPresonus BlueTube DPの購入後に(又は購入する前であっても)重要なポイントは、説明書をよく読むことです。その単純な理由はいくつかあります:
Presonus BlueTube DPをまだ購入していないなら、この製品の基本情報を理解する良い機会です。まずは上にある説明書の最初のページをご覧ください。そこにはPresonus BlueTube DPの技術情報の概要が記載されているはずです。デバイスがあなたのニーズを満たすかどうかは、ここで確認しましょう。Presonus BlueTube DPの取扱説明書の次のページをよく読むことにより、製品の全機能やその取り扱いに関する情報を知ることができます。Presonus BlueTube DPで得られた情報は、きっとあなたの購入の決断を手助けしてくれることでしょう。
Presonus BlueTube DPを既にお持ちだが、まだ読んでいない場合は、上記の理由によりそれを行うべきです。そうすることにより機能を適切に使用しているか、又はPresonus BlueTube DPの不適切な取り扱いによりその寿命を短くする危険を犯していないかどうかを知ることができます。
ですが、ユーザガイドが果たす重要な役割の一つは、Presonus BlueTube DPに関する問題の解決を支援することです。そこにはほとんどの場合、トラブルシューティング、すなわちPresonus BlueTube DPデバイスで最もよく起こりうる故障・不良とそれらの対処法についてのアドバイスを見つけることができるはずです。たとえ問題を解決できなかった場合でも、説明書にはカスタマー・サービスセンター又は最寄りのサービスセンターへの問い合わせ先等、次の対処法についての指示があるはずです。