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Nady FS-4N Rackmount Notch Feedback Suppressor

B&H # NAFS4N Mfr # FS-4N
Usually ships in 7-14 business days

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This is a special order item. Est. arrival at B&H is 7-14 business days (subject to availability). Your order will be charged at the time of shipment.

International Orders*
For international orders, credit cards will be charged at time you place your order.

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Not eligible for free Expedited Shipping
You Pay: $89.99
Product Highlights
  • Slim 1RU Rackmount Metal Chassis
  • 4 Notch Filters
  • Bypass Switch
  • 1/4" I/O Jacks
  • LED Display
  • Internal Selectable Power Supply
  • AC and DC Power Inputs

The FS-4N from Nady is a feedback suppressor that offers versatile features in a slim 1RU rackmount metal chassis. It features 4 extremely narrow notch filters, each of which is independently adjustable from 60Hz to 6kHz to allow quick elimination of unwanted problem frequencies without affecting the quality of your overall sound. Controls for adjusting the notch depth on each filter let you precisely attenuate each selected frequency by up to -20dB. A push button bypass will switch all 4 of the notches in and out simultaneously for live monitoring.

The unit has standard 1/4" TRS input and output jacks for wide compatibility with a variety of systems and devices. An inline 8-band audio spectrum analyzer LED display lets you quickly identify problem frequency ranges so you can quickly react and adjust the suppressor. The unit has an internal shielded power supply with a selectable operating voltage for international use. It has a standard IEC AC socket, plus screw terminals for optional 24VDC input powering.

Slim 1RU rackmount metal chassis fits in any standard equipment rack
4 extremely narrow notch filters, each of which is independently adjustable from 60Hz to 6kHz to allow quick elimination of unwanted problem frequencies without affecting the quality of your overall sound
Controls for adjusting the notch depth on each filter let you precisely attenuate each selected frequency by up to -20dB
A push button bypass will switch all 4 of the notches in and out simultaneously for live monitoring
Standard 1/4" TRS input and output jacks for wide compatibility with a variety of systems and devices
An inline 8-band audio spectrum analyzer LED display lets you quickly identify problem frequency ranges so you can quickly react and adjust the suppressor
The internal shielded power supply has a selectable operating voltage for international use
Standard IEC AC socket, plus screw terminals for optional 24VDC input powering
Input Sensitivity 0.775 (0dBm)
Input Impedance 15 kOhms, Balanced
Output Level 0.775 (0dBm)
Output Impedance 600 Ohms, Balanced
Frequency Response 20Hz - 20kHz, < ±1dB
Signal to Noise Ratio > 68dB
Total Harmonic Distortion (THD) < 0.4%
Filter Frequency Range: 60Hz - 6kHz, Continuously Variable
Notch Depth: 0 ~ -20dB
Connectors 1 x 1/4" TRS Input
1 x 1/4" TRS Output
1 x AC Power Input
1 x 24VDC Screw Terminal Strip
Power Requirements 120/230VAC, 50/60Hz
24VDC
Power Consumption 5.5W
Fuse 120VAC: 0.315A/250V
230VAC: 0.2A/250V
Dimensions (WxHxD) 19 x 1.75 x 8.3" (483 x 44 x 210mm)
Weight 6.6 lbs (3kg)
Nady FS-4N Rackmount Notch Feedback Suppressor
  • Power Cord
  • 1-Year Limited Warranty
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