LA Audio ElectronicメーカーEQ231G-SPの使用説明書/サービス説明書
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Dual 31 Band Graphic Equaliser & Dy namics Processor User Manual.
User Manual Copy right © LA Audio 2004 2 Copy right Copyright 2004. A ll rights reserved. The inf ormation in t his document is subject to change without notice.
User Manual Thank you © LA Audio 2004 3 Thank y ou fo r buying this product. As can be found t hroughout the LA Audio range, your EQ231G-SP has been desig ned and manuf actured to the hig hest possible standar ds of perf ormance and r eliability.
User Manual Contents © LA Audio 2004 4 Contents IMPORTANT SAFETY INST RUCTI ONS 5 Safet y Inform ation 6 1. Intr oduction 7 2. Installat ion 8 3. Operat ing Instr uctions 11 4. Applications & T echniques 13 5. Block Diag ram & Specif ications 17 6.
User Manual IMPORTANT SAFETY INSTRUCTIONS © LA Audio 2004 5 IMPORTA NT SA FETY INSTRUCTIONS WARNING THIS EQUI PMENT MUST BE EA RTHED. DO NO T EXPO SE TO RAIN OR MOIST URE. PLEA SE REA D A LL OF THE FOLLOWING INSTRUCTIONS A ND SA VE THEM FOR LA TER REFERENCE BEFORE A TTEMPTING TO CONNECT YOUR UNIT TO THE A C POWER SOURCE.
User Manual Safety Inform ation © LA Audio 2004 6 Safety Information EARTH This unit is connect ed via its power cord to the mains saf ety earth. NEVER OPERAT E THE UNI T W ITH T HIS EART H CONNECTI ON REMOVED. COVERS DO NOT remove the covers. Refer servicing to qualified personnel only.
User Manual 1. Introduction © LA Audio 2004 7 1. Introduction The EQ231G -SP is a high q uality dual 31-band 1/3 octave gr aphic equaliser including variable Hi and Lo-pass filt ers, Shelving EQ, Gate and Limit er.
User Manual 2. Installation © LA Audio 2004 8 2. Installation It is i mport ant to read this sect i on bef ore appl ying power to the uni t. 2.1. Inspect i on and unpacki ng The EQ 231G-SP is caref ully packed at t he fact ory in a carton which is designed to withstand handling in transit .
User Manual 2. Installation (contd.) © LA Audio 2004 9 2.4. External connect i ons The input and out put connectors ar e wired on female and male XLRs respectively, wired as follows: Pin 1: Ground Pin 2: Hot balanced sig nal Pin 3: Cold balanced signal 2.
User Manual 2. Installation (contd.) © LA Audio 2004 10 2.6. Sig nal lev els The unit is desig ned to accept an input sig nal level of up to +20dBu (dB refer red to 0.
User Manual 3. Operating Instr uctions © LA Audio 2004 11 3. Operating Instructions 3.1. Control s 1. EQ faders allow high-r esolution cont rol over EQ gain at 31 ISO f requencies. The f requency is indicated on the f ront panel, as are the amount s of cut and boost, between –12 and +12 dB.
User Manual 3. Operating Instr uctions (c ontd.) © LA Audio 2004 12 5. Shelving Filter Bypass sw itch allows the f ilter t o be taken out of circ uit. This allows you to hear its eff ects when compared to the unf ilter ed sound, and also to allow low frequencies to pass unaf f ected.
User Manual 3. Operating Instr uctions (c ontd.) © LA Audio 2004 13.
User Manual 4. Applications & T echniques © LA Audio 2004 14 4. A pplications & Techniques A graphic eq ualiser may be used in numerous sit uations, in many diff erent ways. It is impossible to document every implementation, but we hope that the f ollowing examples will serve as a useful starting point.
User Manual 4. Applications & T echniques ( contd.) © LA Audio 2004 15 technique is q uite common in r ecording or pr oduction studios to t ailor a sound for its eventual reproduction medium .
User Manual 4. Applications & T echniques ( contd.) © LA Audio 2004 16 Another useful eff ect t hat can be created with a graphic EQ is a ‘Comb Over’. T o give a mono source some int erest in a stereo m ix, the graphic eq ualiser can be used to create variances in each side of the stereo sig nal, thereby widening the sound.
User Manual 4. Applications & T echniques ( contd.) © LA Audio 2004 17 compressor or limiter. Placing the gr aphic equaliser af ter dynamics could cause the compressor or limiter to r eact to f requencies not audible in the output, creating unusual undulations in volume not associated with the prog ram m aterial.
User Manual 5. Block Diagram & Specific ations © LA Audio 2004 18 5. Block Diagram & Specificat ions 5.1 Block Diagram.
User Manual 5. Block Diagram & Specific ations (contd.) © LA Audio 2004 19 5.2 Specifi cat i ons Frequency Response 20 Hz - 20 kHz, -1dB Signal to Noise Rat io @ +4dBu output -96dB Input impedanc.
User Manual 6. Repairs and warranty © LA Audio 2004 20 6. Repairs and w a rranty The EQ 231G-SP is a rug gedly construct ed solid-state unit that req uires no preventative or routine m aintenance. The unit is constr ucted fr om the highest quality components, which are selected to provide consistent, long- lasting perf ormance.
デバイスLA Audio Electronic EQ231G-SP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：
LA Audio Electronic EQ231G-SP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LA Audio Electronic EQ231G-SP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。LA Audio Electronic EQ231G-SP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。LA Audio Electronic EQ231G-SP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。
LA Audio Electronic EQ231G-SP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LA Audio Electronic EQ231G-SP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、LA Audio Electronic EQ231G-SP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LA Audio Electronic EQ231G-SP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。
