dbx ProメーカーAFS 224の使用説明書/サービス説明書
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User Manual D ual Channel Advanced Feedback Suppression Processor ® AFS ™ 224.
W ARNING FOR YOUR PROTECTION READ THESE INSTRUCTIONS: KEEP THESE INSTRUCTIONS HEED ALL W ARNINGS FOLLOW ALL INSTRUCTIONS DO NOT USE THIS APP ARA TUS NEAR W A TER CLEAN ONL Y WITH A DR Y CLOTH. DO NOT BLOCK ANY OF THE VENTILA TION OPENINGS. INST ALL IN ACCORDANCE WITH THE MANUF ACTURER’S INSTRUCTIONS.
U.K. MAINS PLUG W ARNING A molded mains plug that has been cut off from the cord is unsafe. Discard the mains plug at a suitable disposal facility . NEVER UNDER ANY CIRCUMST ANCES SHOULD YOU INSERT A DAMAGED OR CUT MAINS PLUG INTO A 13 AMP POWER SOCKET .
Ta b le of Contents AFS 224 Ta b le of Contents Defining the AFS 224 ..............................................i Service Contact Info ...............................................ii W arranty .....................................................
® AFS 224 Operation AFS 224.
Intr oduction ® AFS 224 User Manual i AFS 224 Congratulations on your purchase of the dbx Professional Products AFS 224. The AFS 224 Advanced Feedback Suppression processor was designed to provide state-of-the-art feedback elimination processing, while maintaining a simple and intuitive control interface.
® Intr oduction AFS 224 AFS 224 User Manual For more information regarding dbx Advanced Feedback Suppression (AFS™) technology, please refer to the white paper section online at: www .dbxpro .com . If you require technical support, contact dbx Customer Service.
Installation / Connections ® AFS 224 User Manual 1 AFS 224 a period of two years. A Return Authorization number must be obtained from dbx by telephone. The company shall not be liable for any consequential damage as a result of the product's use in any circuit or assembly.
Rear and F r ont P anels Operation AFS 224 ® AFS 224 User Manual 2 AFS 224 Rear Po w er Cord Receptacle: Connects AC power to the AFS 224. Input Connectors : Two types of input connectors are provided for input connections: female locking XLR type connectors, and 1/4” tip-ring-sleeve phone jack connectors.
User Setup ® AFS 224 User Manual 3 Operation AFS 224 Live Filter Lift : Live Filter Lift provides maximum sonic integrity by removing unnecessary feedback filters.
® If no insert points are available, then method 4 would be utilized. In this situation, be sure that the AFS 224 input level allows the 0 and +10 dBu LEDS to light as indicated above. The input level to the amplifiers may have to be reduced in this situation so that they are not over- driven by the signal from the AFS 224.
User Setup ® 3 AFS 224 User Manual 5 Operation AFS 224 C-1 Ringing out a system Fixed mode filters are set before a perfor mance in a process called "ringing out a system". This is done after all other system EQ'ing has been done. First, bring down the main mix, turn off all music sources and open all the mics.
User Setup Operation AFS 224 ® AFS 224 User Manual 6 D-1 Using Live Filter Lift Live Filter Lift provides maximum sonic integrity by removing unnecessary feedback filters.
Application Guide Application 1 - Insert On the Microphone Channel This application is ideal for dedicated feedback suppression on microphone channels of a mix- ing console. This application provides the user with individual channels of 24 filter of feed- back suppression per microphone.
® Application 2 - Insert On the Main Stereo Outputs of a Mixing Console This application is ideal for dedicated feedback suppression on the outputs of a mixing con- sole. This application provides the user with dual channels of 24 filters of feedback suppres- sion per channel.
Applications Guide ® 386 User Manual 9 Operation AFS 224 Application 3 - Insert on the Subgroups of a Mix er This setup is ideal for applications that require feedback suppression on certain instruments such as microphones, while keeping instrument that desire feedback (such as guitars) separat- ed.
® Application 4- Connected Inline with the Outputs of a Mix er This application is ideal for dedicated feedback suppression on the outputs of a mixing con- sole. This application provides the user with dual channels of 24 filters of feedback suppres- sion per output channel of the mixing console.
Block Diagram ® 386 User Manual 11 Operation AFS 224 AFS 224 Block Diagram TYPE IV™ A/D DSP Micro Processor Pro grammable Logic CLIP Detect Bypass T ype Live Filter Lift Mode Bypass T ype Input met.
® Analog Inputs: Number of Inputs: 2 Connectors: Female XLR and 1/4” TRS T ype: Electronically balanced/unbalanced, RF filtered Impedance: Balanced 50k Ω , Unbalanced 25k Ω Max input line level.
® 8760 South Sandy Pkwy . Sandy , Utah 84070 Phone: (801) 568-7660 F ax: (801) 568-7662 Questions or comments E•mail us at: customer@dbxpr o .com or visit our W orld Wide W eb home pa ge at: www .
デバイスdbx Pro AFS 224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：
dbx Pro AFS 224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dbx Pro AFS 224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。dbx Pro AFS 224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。dbx Pro AFS 224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。
dbx Pro AFS 224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dbx Pro AFS 224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、dbx Pro AFS 224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dbx Pro AFS 224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。
