Presonus Audio electronicメーカーSingle-Channel Tubeの使用説明書/サービス説明書
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Copyright © 2001, PreSonus Audio Electronics, Inc. ALL RIGHTS RESERVED DigiTUBE Single-Channel T ube Mic-Preamplier with S/PDIF Output USER ’S MANUAL 1.
1 Overview .................................................................................. 1 1.1 Introduction ............................................................................... 1 1.2 F eatures ..........................................
1 OVERVIEW 1 1.1 INTRODUCTION Thank you for purchasing the PreSonus DigiTUBE Single-Channel T ube Mic- Preamplier with S/PDIF Output. This preamp was designed using state of the art components to deliver crystal clear audio for an indenate period of time.
1 OVERVIEW 2 1.2 FEATURES The following is a summary of your DigiTUBE’ s features: Dual Servo Gain Stage Y our DigiTUBE contains a dual servo gain stage (no capacitors). This design provides ultra low noise performance and wide dynamic control. The DigiTUBE can boost the desirable signal without increasing unw anted background noise.
3 OVERVIEW 1 Drive The DigiTUBE is provided with a DRIVE potentiometer for controlling the amount of signal routed through the 12AX7 vacuum tube. This feature lets y ou control how much saturation of the signal occurs. Greater lev els of tube saturation give the signal greater warmth and a richer sound.
4 2 CONTROLS & OPERATION 2.1 FRONT PANEL The front panel of the DigiTUBE contains: GAIN (dB) LOW MID HIGH EQ IN MIC/INSTRUMENT LINE POWER -42 -36 -30 -24 -18 -12 -6 -3 0 3 6 9 12 15 18 24 OUTPUT L.
Gain This control is used to determine the amount that a signal being processed by the pre-amplier is increased in level at output. Dynamic mics and instruments without pre-amps may require more ga.
6 2 CONTROLS & OPERATION Low The LOW control is a dual concentric potentiometer with the outer ring allowing the selected frequency to be boost or cut by as much as twelve decibels. The straight up , twelve o’clock, position is labeled zero (0).
CONTROLS & OPERATION 2 7 Mid The dual concentric potentiometer labeled MID controls the frequencies from 900Hz to 5kHz. The outer ring provides boost or cut at the frequency selected by the inner knob by plus or minus twelve decibels with the straight -up noon position equal to zero or no boost or cut.
8 2 CONTROLS & OPERATION -42 -36 -30 -24 -18 -12 -6 -3 0 3 6 9 12 15 18 24 OUTPUT LEVEL (dBu) Metering The DigiTUBE has a 16 step LED meter to observe output level. The meter begins at -42dbu and goes to +24dbu (clip). A red LED is also provided on the front panel to indicate when the unit has power and is ready for operation.
CONTROLS & OPERATION 2 9 The back panel of the DigiTUBE is divided into a digital and an analog section. 2.2.1 DIGITAL SECTION S/PDIF Digital Output (RCA) External Clock Input (BNC) Clock switch (44.1k and 48k) Sync switch (Internal and External) 2.
2 CONTROLS & OPERATION 10 2.3 VACUUM TUBES The DigiTUBE comes supplied with a 12AX7 vacuum tube that pro vides excel- lent performance characteristics. W e encourage owners of the DigiTUBE to try different brands of 12AX7 v acuum tubes to investigate the various performance possibilities they might provide.
CONTROLS & OPERATION 2 11.
12 4 TECHNICAL SPECIFICATIONS Number of Channels ............................................................................ One Performance THD + Noise (Unweighted) ......................................................0.05% @ 0dB T ube Drive ......
13 TECHNICAL SPECIFICATIONS 4 Power Supply T ype ..................................................................................... Linear Supply Input ................................................................................ 18 VAC/1000mA Power .
14 5 PRESONUS LIMITED WARRANTY IN THE UNITED STATES PreSonus Audio Electronics Inc. warr ants 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 b y the original retail purchaser .
15 PRESONUS LIMITED WARRANTY 5 OUTSIDE OF THE UNITED STATES PreSonus Audio Electronics products are warr anted only in the country where originally purchased, through the authorized PreSonus distributor in the country of original purchase, against defects in material and workmanship.
デバイスPresonus Audio electronic Single-Channel Tube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 Audio electronic Single-Channel Tube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 Audio electronic Single-Channel Tube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 Audio electronic Single-Channel Tube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 Audio electronic Single-Channel Tube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 Audio electronic Single-Channel Tube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 Audio electronic Single-Channel Tube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 Audio electronic Single-Channel Tube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 Audio electronic Single-Channel Tube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。