LMa 25
Lectrosonics
LMa 25
Lectrosonics LMa 25 Transmitter
This transmitter brings Digital Hybrid Wireless™ technology to a moderate cost level while preserving superb performance and maximum flexibility.
It offers multi-mode compatibility with several different hybrid and analog receivers. Although best performance is achieved when the transmitter is used with a hybrid receiver, the DSP also provides emulation of an analog compandor so the unit can be switched for use with 100 and 200 Series Lectrosonics receivers.
It offers multi-mode compatibility with several different hybrid and analog receivers. Although best performance is achieved when the transmitter is used with a hybrid receiver, the DSP also provides emulation of an analog compandor so the unit can be switched for use with 100 and 200 Series Lectrosonics receivers.
Product Weight: 6.3 oz including battery
Dimensions: 3.1"H x 2.4"W x .75"D
Technical Tools
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Manufacturer Specs
Operating frequencies:
Block 470 470.100 - 495.600
Block 19 486.400 - 511.900
Block 20 512.000 - 537.500
Block 21 537.600 - 563.100
Block 22 563.200 - 588.700
Block 23 588.800 - 607.900 and 614.100 - 614.300
Block 24 614.400 - 639.900
Block 25 640.000 - 665.500
Block 26 665.600 - 691.100
Block 27 691.200 - 716.700
Block 28 716.800 - 742.300
Block 29 742.400 - 767.900
(Frequency usage varies by country)
Frequency Selection: 256 frequencies in 100 kHz steps
Channel Separation: 100 kHz
Compatibility Modes
Lectrosonics 400 Series (Digital Hybrid), 200 Series, 100 Series, and IFB.
Mode 3, Mode 6 (Other brands).
RF Power output: Greater than 50 mW
Pilot tone: 25 to 32 kHz frequency; 5 kHz deviation (400 Series only)
Frequency stability: ± 0.002%
Deviation: ± 75 kHz max. (200 & 400 Series Modes)
Spurious radiation: 60 dB below carrier
Equivalent input noise: –120 dBV, A-weighted
Input level:
If set for dynamic mic
0.5 mV to 50 mV before limiting.
> 1 V with limiting.
If set for electret lavaliere mic
1.7 uA to 170 uA before limiting.
> 5000 uA (5 mA) with limiting.
Line level input
5.0 mV to 6 V before limiting.
> 15 V with limiting.
Input impedance:
Dynamic mic: 300Ω
Electret lavaliere: Input is virtual ground with servo adjusted constant current bias
Line level: 2.7 kΩ
Input limiter: Dual envelope, >30 dB range
(Note: The dual envelope “soft” limiter provides exceptionally good handling of transients using variable attack and release time constraints.)
Gain control range: 43 dB; semi-log rotary control
Modulation indicators: Dual bicolor LEDs indicate modulation of -20, -10, 0, +10 dB referenced to full modulation.
Low frequency roll-off: Microphone: –12 dB/octave; -3 dB @ 70 Hz
Instrument Cable: –12 dB/octave; -3 dB @ 35 Hz
Audio frequency response (overall system)
Microphone : 90 Hz to 20 kHz (+/- 1 dB) with the 70Hz low frequency roll-off filter
Instrument Cable : 40 Hz to 20 kHz (+/- 1 dB)
Controls
Two-position “OFF-ON” slide switch for noiseless turn on/turn off operation
Front panel audio gain control.
Rotary switches on side panel adjust transmitter frequency.
Audio Input Jack: Switchcraft 5-pin locking (TA5F)
Antenna: Galvanized steel, flexible wire.
Battery: Precision compartment auto-adjusts to accept any known alkaline 9 volt battery.
Battery Life: 6 hours (alkaline); 7 hours (LiPolymer); 13 hours continuous (lithium)
Construction: Rugged machined aluminum
Emission Designator: 180KF3E
This device complies with FCC radiation exposure limits as set forth for an uncontrolled environment. It should be installed and operated so that its antenna(s) are not co-located or operating in conjunction with any other antenna or transmitter.
Specifications subject to change without notice.
Block 470 470.100 - 495.600
Block 19 486.400 - 511.900
Block 20 512.000 - 537.500
Block 21 537.600 - 563.100
Block 22 563.200 - 588.700
Block 23 588.800 - 607.900 and 614.100 - 614.300
Block 24 614.400 - 639.900
Block 25 640.000 - 665.500
Block 26 665.600 - 691.100
Block 27 691.200 - 716.700
Block 28 716.800 - 742.300
Block 29 742.400 - 767.900
(Frequency usage varies by country)
Frequency Selection: 256 frequencies in 100 kHz steps
Channel Separation: 100 kHz
Compatibility Modes
Lectrosonics 400 Series (Digital Hybrid), 200 Series, 100 Series, and IFB.
Mode 3, Mode 6 (Other brands).
RF Power output: Greater than 50 mW
Pilot tone: 25 to 32 kHz frequency; 5 kHz deviation (400 Series only)
Frequency stability: ± 0.002%
Deviation: ± 75 kHz max. (200 & 400 Series Modes)
Spurious radiation: 60 dB below carrier
Equivalent input noise: –120 dBV, A-weighted
Input level:
If set for dynamic mic
0.5 mV to 50 mV before limiting.
> 1 V with limiting.
If set for electret lavaliere mic
1.7 uA to 170 uA before limiting.
> 5000 uA (5 mA) with limiting.
Line level input
5.0 mV to 6 V before limiting.
> 15 V with limiting.
Input impedance:
Dynamic mic: 300Ω
Electret lavaliere: Input is virtual ground with servo adjusted constant current bias
Line level: 2.7 kΩ
Input limiter: Dual envelope, >30 dB range
(Note: The dual envelope “soft” limiter provides exceptionally good handling of transients using variable attack and release time constraints.)
Gain control range: 43 dB; semi-log rotary control
Modulation indicators: Dual bicolor LEDs indicate modulation of -20, -10, 0, +10 dB referenced to full modulation.
Low frequency roll-off: Microphone: –12 dB/octave; -3 dB @ 70 Hz
Instrument Cable: –12 dB/octave; -3 dB @ 35 Hz
Audio frequency response (overall system)
Microphone : 90 Hz to 20 kHz (+/- 1 dB) with the 70Hz low frequency roll-off filter
Instrument Cable : 40 Hz to 20 kHz (+/- 1 dB)
Controls
Two-position “OFF-ON” slide switch for noiseless turn on/turn off operation
Front panel audio gain control.
Rotary switches on side panel adjust transmitter frequency.
Audio Input Jack: Switchcraft 5-pin locking (TA5F)
Antenna: Galvanized steel, flexible wire.
Battery: Precision compartment auto-adjusts to accept any known alkaline 9 volt battery.
Battery Life: 6 hours (alkaline); 7 hours (LiPolymer); 13 hours continuous (lithium)
Construction: Rugged machined aluminum
Emission Designator: 180KF3E
This device complies with FCC radiation exposure limits as set forth for an uncontrolled environment. It should be installed and operated so that its antenna(s) are not co-located or operating in conjunction with any other antenna or transmitter.
Specifications subject to change without notice.