Congratulations!FS-4NFEEDBACK SUPPRESSORFeaturesOffering the ultimate ease of operation, the FS-4N is the straightforward solution to feedback and hum problems inlive sound applications.• Single rack space (1U) rugged metal housing for reliability• Four extremely narrow (1/60 octave) notch filters, each independently adjustable from 60 to 6,000 Hz,allow quick elimination of unwanted problem frequencies without affecting the integrity of the overall sound.• A control for adjusting the notch depth on each filter enables precise attenuation (up to -20 dB) at eachselected frequency.• A push button bypass switches all four notches in and out simultaneously for fast monitoring of resultsduring use.• An in-line 8-band audio spectrum analyzer LED display enables quick identification of the frequencyrange of any problem frequency, facilitating immediate reaction and suppression by the operator.• 1/4" TRS balanced jacks for both SIGNAL IN and OUT• Internal shielded power supply with external fuse and ~115V (60Hz) / ~230V (50Hz) AC select switch• IEC power cord socket for AC operation and screw terminals for optional +24 VDC input poweringDate of PurchaseDealer’s NameCityStateZipModel#Serial #You have purchased one of the finest professional feed-back suppressors on the market today. This unit wasdeveloped using the expertise of professional soundengineers and working musicians. You will find your newNADY AUDIO FS-4N has superior performance andgreater flexibility than any other feedback suppressor inits price range. Please read this manual carefully to getthe most out of your new unit. Thanks for selecting NADYAUDIO as your choice in feedback suppressors.2