Instruction/ maintenance manual of the product SF-1 QSC Audio
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9 SF-1 Subw oof er Filter Rev. A Owner’ s Manual FPO.
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1 SF-1 SUBWOOFER FIL TER INTRODUCTION The SF-1 Subwoofer Filter is an upper slot accessory for QSC MXa Series amplifiers, which feature Level One Open Input Architecture. The accessory mounts in the back of the amplifier above the standard input panel.
2 CONFIGURA TION SETTING THE SUBSONIC FILTER FREQUENCY The subsonic (highpass) filter on Channel 1 cannot be bypassed, and Channel 2 should only be bypassed in the bridged mono mode. Plug-in SIP resistor network RN3 sets the high-pass frequency for both channels 1 and 2.
3 • Stereo, Bridged Mono, and Parallel Mono If the two subwoofer channels are to carry different or independent program material, as in stereo or bridged mono, set the SF-1 for “Stereo” operation. Use this also for parallel mono operation from a single program signal source.
4 INST ALLA TION Before installing the SF-1, disconnect the amplifier’s power cable from the AC mains. 1. Position the amplifier so that the rear panel is facing you. Locate the input panel and the blank accessory panel above it. 2. Remove the four mounting screws—the two holding the blank panel and the two holding the standard input panel.
5 SPECIFICA TIONS SIGNAL TO NOISE RATIO (22 Hz to 22 kHz): 103 dB TOTAL HARMONIC DISTORTION <0.1 % CROSSTALK 70 dB below rated power within passband CMRR: better than 50 dB FILTER TYPE second-order butterworth, Q=0.
6 APPLICATION NOTES For cinema surround channels and subwoofers that do not require an EQ boost, use the following switch settings. SW1 slide switch- BOOST OFF SW2 DIP switch Position 1 ON Position 2 .
7 APPENDIX A: W ARRANTY & DISCLAIMERS DISCLAIMER QSC Audio Products, Inc. is not liable for any damage to speakers, amplifiers, or any other equipment that is caused by negligence or improper installation and/or use of the SF-1 Subwoofer Filter. PRODUCT WARRANTY QSC Audio Products, Inc.
8 QSC TECHNICAL SERVICES DEPARTMENT 1675 MacArthur Blvd Costa Mesa, CA 92626 Telephone: (800) 772-2834 (714) 957-7150 (714) 754-6175 Fax: (714) 754-6173 Bulletin Board: (714) 668-7567 (800) 856-6003 I.
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12 QSC AUDIO PRODUCTS, INC. 1675 MacArthur Blvd., Costa Mesa, CA 92626 USA Ph (714) 754-6175 Fax (714) 754-6174 Email INFO@qscaudio.com W eb http://www.qscaudio.com “ QSC ” and the QSC logo are registered with the U.S. Patent and Trademark Office.
An important point after buying a device QSC Audio SF-1 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought QSC Audio SF-1 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 QSC Audio SF-1 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, QSC Audio SF-1 you will learn all the available features of the product, as well as information on its operation. The information that you get QSC Audio SF-1 will certainly help you make a decision on the purchase.
If you already are a holder of QSC Audio SF-1, 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 QSC Audio SF-1.
However, one of the most important roles played by the user manual is to help in solving problems with QSC Audio SF-1. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device QSC Audio SF-1 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
