Product


LX SERIES
 

These models cannot be used or sold in the USA except as samples for evaluation or for export purposes, because there is no FCC regulation for their RF power level.

 
The LX-75 is a professional grade low power FM transmitter operating in the commercial FM  band (88.1 - 107.5MHz).  It is intended for large indoor spaces (large auditoriums or churches, convention centers, arenas, stadiums), or outdoor (touristic and historic sites, drive-in theaters, shopping mall parkings) medium range broadcasting in a variety of applications : hearing assistance, translation, information, sound re-enforcement. Its outstanding RF and audio performances, ruggedness, reliability, versatility and increased RF power level put the LX-75 in a class by itself, surpassing any competitors for applications requiring more coverage than what is provided by conventional hearing assistance systems.  
 
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Download manual »

Front view
 
Back view
 
FEATURES

  • User programmable frequency
  • User programmable RF power level
  • No manual tuning required
  • Works with standard FM receivers
  • Coverage of 700 feet or more with portable FM receiver, 2500 feet or more with car radio
  • Hi-Fi audio
  • Adjustable input level with over modulation indicator
  • Selectable bass boost and mono/stereo operation (stereo version only)
  • Choice of 3 audio configurations
  • Unbalanced (1/4-F-TRS) line input(s) and balanced (XLR3-F & 1/4-F-TRS) input (line or mic) with separate input level controls
  • Choice of fixed antenna or UHF connector
  • Industry Canada RSS-123 certified
  • All steel cabinet
  • 2 years warranty
  • Made in Canada


TECHNICAL SPECIFICATIONS

  • Modulation: FM, 75 kHz deviation
  • Frequency selection: 88.1 - 107.5 MHz
  • RF power: 0 to 80 mW (programmable)
  • Load impedance (UHF connector): 50 Ω
  • Spurious rejection: 40 dB min.
  • Frequency response: 20 - 20 kHz (mono models), 20 - 15 kHz (stereo model)
  • Harmonic distortion: 0.3% max.
  • Signal-to-noise ratio: 70 dB min.
  • Stereo separation: 35 dB min., 40 dB typ.
  • Input sensitivity / impedance: -15 dBm to +22 dBm / 5 kΩ (mono unbal.), -13 dBm to +22 dBm / 10 kΩ (stereo unbal.), -10 dBm to + 22 dBm / 600 Ω (bal.), -60 dBm to 0 dBm / 950 Ω (mic.)
  • Power supply: 110/16 VAC @ 500 mA
  • Dimensions: 7.8'' W x 12'' D x 1.75'' H
  • Weight: 8 lb.


AUDIO CONFIGURATIONS

MODEL

CONFIGURATION

UNBAL. INPUT CONNECTOR
UNBAL. INPUT LEVEL
UNBAL. INPUT IMPEDANCE
BAL. INPUT CONNECTOR
BAL. INPUT LEVEL
BAL. INPUT IMPEDANCE
 
LX-75B

mono unbal. & bal.
1/4" female TRS*
-15dBm to +22dBm
5 kΩ
XLR-3 & 1/4" female TRS***
-10dBm to +22dBm
600 Ω
LX-75M

mono unbal. & mic.****
1/4" female TRS*
-15dBm to +22dBm
5 kΩ
XLR-3 & 1/4" female TRS***
-60dBm to +0dBm
950 Ω
 
LX-75SM

stereo unbal. & mic.****
1/4" female TRS**
-13dBm to +22dBm
10 kΩ
XLR-3 & 1/4" female TRS***
-60dBm to +0dBm
950 Ω
 
* a stereo source will automatically be mixed into a mono signal inside the unit.
** Tip is left channel, Ring is right channel and Sleeve is ground.
*** combo connector.  XLR: pin 3 +, pin 2 -, pin 1 gnd.  TRS: Tip +, Ring: -, Sleeve gnd.
**** 15 VDC Phantom power is present on positive and negative phases



RF CONFIGURATIONS

MODELS

LX-75B (ANT), LX-75M (ANT), LX-75SM (ANT) 
LX-75B (UHF), LX-75M (UHF), LX-75SM (UHF)



OUTPUT

Telescopic antenna
UHF female connector (SO-239)
FRONT AND BACK PANEL DESCRIPTION

 
  1. POWER: indicates the transmitter is ON
  2. OVER: indicates that modulation level is exceeding 100 %
  3. INPUT LEVEL: controls the audio input level (modulation)
  4. MIC./BAL. LEVEL: controls the audio input level applied to the mic./bal. input jack
  5. MIC./BAL. INPUT: low impedance balanced audio input
  6. AC INPUT: connect the AC adaptor (supplied) here
  7. AC POWER SWITCH: turns the transmitter ON or OFF
  8. RF POWER: RF output power selection
  9. BB (Bass Boost): gives a 6 dB gain boost to the low frequencies (stereo model only)
  10. ST (stereo): enables stereo broadcasting (stereo model only)
  11. FREQUENCY SELECT: transmitting frequency selection
  12. LINE INPUTS: high impedance unbalanced audio inputs
  13. TRANSMITTING TELESCOPIC ANTENNA
 



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BEWARE OF CONTENT OF THIS WEBSITE: SOURCEFMTRANSMITTER.COM

This website displays false statements regarding the FCC certification / legality of many FM transmitters including our MS-100.  Please be assured that our MS Series of high quality FM transmitters are FCC part 15 certified and perfectly legal to use in the USA.  Furthermore, sourcefmtransmitter.com also advises potential customers not to buy many models of transmitters (including our MS series), under those false statements.  Instead, it emphasizes one or two products, including their own brand which, ironically, is not recommended by many FM transmitters forums.

We sincerely believe that our MS Series of transmitters are the best FCC part 15 FM transmitters in the market, and no other product even comes close in terms of RF performances, sound quality, reliability and longevity.  Yes, they cost more, but they are well worth it.


 
 
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