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401X Quad LT Wireless Lavalier Microphone System

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A complete 4-Lavalier system!

The Nady 401X Quad LT Wireless Lavalier Microphone System features the 401-HT receiver with four Lavalier mics and body-pack transmitters. Four independent VHF receivers in one convenient housing allows operation of four wireless systems at the same time. This system offers high performance, unmatched transparent audio with 120dB dynamic range and up to 250' optimum line-of-sight operation. Front dual antenna jacks for either onboard or remote switch allows audio muting the transmitter, while maintaining signal integrity.


  • Four independent VHF receivers in one convenient housing allows simultaneous operation of four wireless systems
  • 120dB dynamic range
  • 30Hz-18kHz frequency response
  • Up to 250' optimum line-of-sight operation
  • Front dual antenna jacks for either onboard or remote antennas
  • Off/Standby/On switch allows audio muting the transmitter while maintaining signal integrity
  • Individual channel XLR output jacks, volume and RF mute controls
  • Rear panel four-channel-mixed 1/4 output jack
  • Front panel power ON LED, TX ON and AF signal level LED displays
  • Noise-free transmitter ON/OFF operation
  • Rugged, all-metal construction that is single-space rackmount unit

401X Quad LT Wireless Lavalier Microphone System Specifications:

Overall System Performance:
  • Frequency Response: 30-18KHz (-3dB)
  • Dynamic Range: 120dB (20-20KHz)
  • Total Harmonic Distortion: <0.5% (typical)
    RF Carrier Frequency Range: 170-230MHz (Factory installed Channels)
  • Frequency Stability: +/- 0.005%, crystal controlled
  • Modulation: FM (F3E), +/-15KHz nor,+/-30KHz max
  • Operating Range: 250 feet typical ” up to 500+ feet optimum line-of-sight
Frequency Group 1
  • Channel A = 171.905 MHz
  • Channel B = 185.15 MHz
  • Channel D = 209.150 MHz
  • Channel N = 197.150 MHz
Frequency Group 2
  • Channel E4 = 173.8 MHz
  • Channel H = 191.3 MHz
  • Channel F = 203.4 MHz
  • Channel E = 215.2 MHz
401X Quad Transmitter:
  • Audio Inputs: 3.5mm mono locking jack with phantom power
  • Controls: OFF/STANDBY/ON switch, input level adjust
  • LED Indicator: Unit "ON" (single flash), Low Battery Alert (steady)
  • RF Power Out: 50mW (Max. allowed by FCC)
  • Harmonic & Spurious Emissions: <-40dB
    Battery: 9V Alkaline
  • Battery Life: Up to 20 hours
  • Dimensions: 4.1" X 2.4"X 0.8" (10.4 X 6.1 X 2.0 cm)
  • Weight: (w/o battery): 3.6 oz (101 g)
401X Quad Receiver:
  • Controls: Power ON/OFF, volume control, mute control
  • Connectors: 1 unbalanced adjustable mixed (all four channel) 1/4" T-S audio output jack. Line level, 600 ohms. 4 balanced fixed level XLR. #1=GND, #2-3=signals, Line/Mic level, 11k/600 ohms
  • Receiver: 2.1 mm barrel-type DC input jack (tip=positive)
  • LED Indicators: 1Power ON LED, 4 AF LED, 4 TX ON LED
  • Dimensions (H x W x D): 1.75"x 7.5"x 16.5"(4.4 x 19 x 42 cm)
  • Weight: 4.5 lbs (2 Kg)
  • Power Requirements: 16V @ 800mA, nominal, AC/DC adapter supplied
  • Antenna Connectors: Dual female BNC connectors
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