Instruction/ maintenance manual of the product AFS 224 dbx Pro
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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 .
An important point after buying a device dbx Pro AFS 224 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought dbx Pro AFS 224 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 dbx Pro AFS 224 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, dbx Pro AFS 224 you will learn all the available features of the product, as well as information on its operation. The information that you get dbx Pro AFS 224 will certainly help you make a decision on the purchase.
If you already are a holder of dbx Pro AFS 224, 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 dbx Pro AFS 224.
However, one of the most important roles played by the user manual is to help in solving problems with dbx Pro AFS 224. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device dbx Pro AFS 224 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
