The Quadra system provides an entirely new level of audio and RF performance in a wireless monitor system. The combination of analog and digital input capability, ultra-low latency 24-bit, 48 kHz audio, digital RF modulation and discrete four channel mixing capability make the Quadra a truly unique IEM product for mission-critical, professional applications.
The system is designed for line level analog audio signals and AES/EBU digital audio input signals. 48 kHz/24-bit audio, ruler-flat 20 Hz to 20 kHz frequency response, ultra-low distortion and high dynamic range assure excellent audio quality. Housings and panels are machined aluminum with electrostatic powder coated and anodized finishes and laser etched marking for durability. An intuitive mixing interface and comprehensive LCD on the belt pack receiver provide performing artists and monitor engineers alike with a comfortable and confident user experience.
Below are links to the current firmware versions for the Quadra series products. These are zip files, after downloading extract them into a temporary folder. Use the Quadra/D4 Firmware Update Utility program update firmware.
NOTE: D4 firmware version 3.00 and higher is compatible and interoperable with the Lectrosonics Quadra IEM system (reduced latency). It is NOT compatible with older D4 units running version 1.xx and 2.xx firmware. Please upgrade any older D4 units to version 3.00 or higher to make them compatible.
M4T Receiver
M4T v1.04 – 31 August 2011
Removed unnecessary latency from AES/EBU digital audio input path. System latency when using AES/EBU inputs is now 1.6 ms if input sample rate is 192k, 1.8 ms if input sample rate is 96k, and 2.3 ms if input sample rate is 48k. System latency when using analog inputs remains at 1.0 ms.
Also removed factory “D4” mode and added factory diagnostic serial commands.
M4T v1.02 – 09 June 2011
Fixed computational bug causing subtle defects in the noise floor of the headphone amp audio. (Transmitted audio not affected.)
M4T v1.01 – 23 February 2011
First production release.
M4R Receiver
M4R v1.14 – 23 January 2012
Fixed a problem wherein a sudden, very strong signal (e.g. transmitter turned on right next to receiver) yielded noisy audio until the antennas were moved.
M4R v1.13Â – 10 January 2012
Corrected baseband filter width in 2 ch mode, for improved adjacent channel rejection.
M4R v1.11 – 15 September 2011
Added factory diagnostic serial commands.
M4R v1.10 – 09 June 2011
Fixed computational bug causing subtle defects in the audio noise floor.
M4R v1.03 – 24 Februrary 2011
First production release.
Below is a link the current Firmware Update Utility installer. This is a zip file. Download and extract it into a temporary folder. Uninstall any previous version of the Quadra/D4 Update Utility first, then run the unzipped file “Setup.exe” to start the installation process.
| Download | File | Size | Type | Last Modified |
|---|---|---|---|---|
| DOWNLOAD | Software: USB Driver Installer | 1.45 MB | ZIP | 05/25/2024 |
Below are links to the current firmware versions for the Quadra series products. These are zip files, after downloading extract them into a temporary folder. Use the Quadra/D4 Firmware Update Utility program update firmware.
NOTE: D4 firmware version 3.00 and higher is compatible and interoperable with the Lectrosonics Quadra IEM system (reduced latency). It is NOT compatible with older D4 units running version 1.xx and 2.xx firmware. Please upgrade any older D4 units to version 3.00 or higher to make them compatible.
| Title | File Size | File Type | Date | Filename | Link |
|---|---|---|---|---|---|
| Firmware: Quadra Firmware Update Utility Program | 526 KB | zip | April 18, 2011 | quadra_utility_18apr111.zip | |
| Firmware: Quadra M4R Receiver v1.14 | 284 KB | zip | April 18, 2011 | m4r-v1_14.zip | |
| Firmware: Quadra M4T Transmitter v1.04 | 284 KB | zip | April 18, 2011 | m4t-v1_04.zip |
