The Lectrosonics SMV Super Miniature Wireless Microphone Transmitter incorporates Lectrosonics patented Digital Hybrid Wireless technology, in a package no bigger than a pager. The SMV transmitter is miniature in size yet rugged enough to withstand rigorous daily use in the field or in studios.
Main Benefits
- Digital Hybrid Wireless™ Technology
- Variable, selectable power output
- Membrane switch control panel with LCD display
- 256 synthesized UHF frequencies
- Wide input dynamic range
- DSP based pilot-tone signal
- Circulator/Isolator output stage
- Splash-proof, machined aluminum housing
- Non-corrosive, super-hard finish
Description
Digital Hybrid Wireless™ is a revolutionary new design that combines 24-bit digital audio with an analog FM radio link to provide outstanding audio quality and the extended operating range of the best analog wireless systems. The design overcomes channel noise in a dramatically new way, digitally encoding the audio bitstream in the transmitter and decoding it in the receiver, yet sending the encoded information via an analog FM wireless link. This proprietary DSP algorithm eliminates a compandor circuit and its artifacts, and preserves the RF spectral footprint of analog FM designs to simplify multi-channel coordination with exisiting analog wireless systems.
To meet the demand for both extended operating range and extended battery life, the "V" series SM transmitters offer selectable output power (See specific model data sheets for details). A third selection at 50 mW is provided for some theatrical applications where the system design specifies lower transmitter power.
The input section features the unique servo bias input circuitry with a standard TA5M type jack for use with electret lavaliere mics, dynamic mics, or line level signals. A DSP-controlled analog audio limiter is employed before the A-D converter. The limiter has a range of more than 30 dB for excellent overload protection and a dual release envelope that makes the limiter acoustically transparent while maintaining low distortion. The limiter recovers quickly from brief transients, with no audible side effects, and also recovers slowly from sustained high levels to keep audio distortion low while preserving short term dynamics.
Tech Specs
| Operating Frequency |
537.600 - 563.100 MHz |
| Frequency Range |
256 frequencies in 100 kHz steps for one 25.5 MHz wide block |
| Channel Spacing |
100 kHz |
| Frequency Selection |
Control panel mounted membrane switches |
| RF Power Output |
Switchable; 50, 100 or 250 mW |
| Compatibility Modes |
Digital Hybrid Wireless® (400 Series), 200 Series, 100 Series, Mode 3 , Mode 6, IFB |
| Pilot Tone |
25 to 32 kHz; 5 kHz deviation (in 400 Series Mode) |
| Frequency Stability |
± 0.002% |
| Deviation |
± 75 kHz max. (in 400 Series Mode) |
| Spurious Emission |
60 dB below carrier |
| Equivalent Input Noise |
-125 dBV, A-weighted |
| Input Level |
- If set for dynamic mic: 0.5 mV to 50 mV before limiting; greater than 1 V with limiting
- If set for electret lavaliere mic: 1.7 uA to 170 uA before limiting; greater than 5000 uA (5 mA) with limiting
- Line level input: 17 mV to 1.7 V before limiting; greater than 50 V with limiting
|
| Input Impedance |
- Dynamic mic: 300 Ohms
- Electret lavaliere: input is virtual ground with servo adjusted constant current bias
- Line level: 2.7 k Ohms
|
| Limiter |
DSP Controlled Soft limiter, 30 dB range |
| Bias Voltage(s) |
Fixed 5 V at up to 5 mA; selectable 2 V or 4 V servo bias for any electret lavaliere |
| Gain Range |
44 dB; panel mounted membrane switches |
| Modulation |
Dual bicolor LEDs indicate modulation of -20, -10, 0, +10 dB referenced to full modulation |
| Controls |
Control panel with LCD and four membrane switches |
| Low Frequency Roll-Off |
Adjustable from 35 to 150 Hz |
| Audio Frequency Response |
35 Hz to 20 kHz, +/-1 dB |
| Signal to Noise Ratio |
SmartNR Off:
- No Limiting: 103.5 dB
- Limiting: 108 dB
SmartNR Normal:
- No Limiting: 107 dB
- Limiting: 111.5 dB
SmartNR Full:
|
| Total Harmonic Distortion |
0.2% typical (400 Series mode) |
| Audio Input Jack |
Switchcraft 5-pin locking (TA5F) |
| Antenna |
Flexible, unbreakable steel cable |
| Batteries |
One 1.5 Volt AA lithium or rechargeable; NiMH recommended |
| Battery Life |
50 mW:
- Alkaline: 2 hrs
- Lithium: 7.25 hrs
- 2500 MA NiMH: 5 hrs
100 mW
- Alkaline: 1.5 hrs
- Lithium: 5.5 hrs
- 2500 MA NiMH: 4 hrs
250 mW
- Alkaline: not recommended
- Lithium: 3 hrs
- 2500 MA NiMH: 2.25 hrs
|
| Emission Standard |
180KF3E |
| Dimensions |
2.3 x 1.8 x 0.64" / 58 x 46 x 16 mm not including microphone/lanyard |
| Weight |
2.7 oz / 75.9 g with lithium battery |
Contents
- 1 - AA Lithium Battery
- 1 - Foam Insulating Pads (Part #35923)
- 1 - Pouch (Part #35697)
- 1 - Mic Connector Kit (Part #SMKITTA5)
- 1 - Belt Clip (Part #SMBCUPSL)
- 1 - Quick Start Guide
