Lectrosonics Quadra M4T Wireless Transmitter

Frequency Range

Using the license free 902 - 928 MHz ISM band, this system is outside the normal broadcast frequencies thus providing both technical and operational advantages over standard analog systems

Multi-Channel Capability

Quadra can be configured to provide either 2 or 4 audio channels. In the 2 channel mode, eight different frequencies are available, each with two audio channels. In the 4 channel mode, four different frequencies are available, each with four audio channels. Multiple Quadra systems can be operated in the same location to provide up to 16 total audio channels between all units

The performer can then use the on-board mixer to tailor the audio output to his or her tastes or the requirements of the performance at hand

Ultra Low Latency

Signal delay with digital devices is a concern, particularly when performing artists hear their own voice through the system. Quadra employs new technology to drastically lower the throughput latency to levels far below industry standards. With analog inputs at the transmitter, the Quadra system adds a mere 1 ms of latency. With digital inputs, the latency is 2.3 ms for 48 kHz sources and 1.8 ms for 96 kHz sources

Audio Signal Monitoring

The signals at the transmitter inputs can be monitored in two ways: using the LCD bar-graph meters for levels and with headphones listening to the actual signals. The LCD bar-graph meters show the audio level range from -60 to 0 dB. When the signal exceeds +20 dBu at an input, the bar graph indicates this with a bright "!" at the top of the bar on that channel

Road-Worthy Construction

Unlike consumer and "semi-pro" equipment, the Quadra system was designed and developed with the professional touring, installation, theater and broadcast customers in mind

The receiver case is machined out of solid metal, yet it is lightweight and sleek in order to be comfortable on the artist's body

The transmitter chassis is all-metal and features a built-in power supply with detachable AC cable. The AC connection includes a wire bail to ensure that the cable does not become disconnected accidentally

Road-Worthy Construction

Unlike consumer and "semi-pro" equipment, the Quadra system was designed and developed with the professional touring, installation, theater and broadcast customers in mind

The receiver case is machined out of solid metal, yet it is lightweight and sleek in order to be comfortable on the artist's body

The transmitter chassis is all-metal and features a built-in power supply with detachable AC cable. The AC connection includes a wire bail to ensure that the cable does not become disconnected accidentally