The Lectrosonics DSR4 digital wireless receiver provides the highest level of RF and audio performance available with a versatile feature set in a compact design for field and location production.
Settings can be made from the front panel with tactile buttons and color LCD interface, making the unit ideal for use in portable bag systems and on sound carts. An RF spectrum analyzer and SmartTune are built into the receiver to alleviate interference problems in an increasingly congested RF spectrum.
The mechanical design of the receiver fits into the Super-Slot ecosystem and combines field-proven features developed over many years of experience in motion picture and television production. To decrease weight, the DSR4 provides a four channel receiver in one unit powered by external DC.
The receiver is also equipped with an IR port for data transfer between units. The machined aluminum housing and panels are surfaced with a hardanodised finish with laser etched markings to withstand the rigors of field production. The RF gain stages in the front end use a newly developed design to provide low noise RF amplification, excellent sensitivity and extremely low susceptibility to intermodulation and de-sensitisation.
Lectrosonics DSR4 Features and Specifications:
Operating Frequencies (MHz):
| Model A1B1: |
470.100 - 614.375
|
|
Model B1C1:
|
537.600 - 691.175 |
| 941: |
941.525 - 959.825 |
| 961: |
961.100 - 1014.900 |
Wireless Performance
| Frequency Selection Steps: |
25 kHz |
| Frequency Stability: |
±0.001 % |
| Front end bandwidth: |
±5.5 MHz, @ -3 dB |
| Sensitivity: |
20 dB Sinad: 0.9 uV(-108 dBm), A weighted |
|
60 dB Quieting: 1.12 uV (-105 dBm), A weighted |
| AM rejection: |
>60 dB, 2 uV to 1 Volt |
| Modulation acceptance: |
85 kHz |
| Spurious rejection: |
85 dB |
| Third order intercept: |
+15 dBm |
| Diversity method: |
Antenna phase switching (4 channel operation) |
|
Vector diversity (2 channel operation) |
| Antenna inputs: |
50 Ohm; SMA female connectors |
Audio output connectors:
- Interchangeable D connector adapters or camera slot interfaces
- Dual TA5 male (mini XLR) balanced output adapter
- Battery sled adapters with TA5 maleoutputs.
- Front panel TA5 male for AES3 outputs or analog output channels 3 and 4.
Audio Performance (overall system):
| Frequency Response: |
25 Hz to 20 kHz (+0/-3 dB) |
| THD: |
0.2% (typical) |
SNR at receiver output (dB):
| SmartNR |
No Limiting |
w/Limiting |
| OFF |
103.5 |
108.0 |
| NORMAL |
107.0 |
111.5 |
| FULL |
108.5 |
113.0 |
Dynamic Range and Latency:
| Input Dynamic Range: |
125 dB (with full Tx limiting) |
| Overall Latency (time delay): |
1.6 ms with digital source, <2.9 ms with Hybrid TX |
| Audio Test Tone: |
1 KHz, -50 to +7 dBu, <1%THD |
Controls:
| Front Panel: |
Color LCD display
Menu/Sel, Pwr/Back, Up/Down Arrow Buttons
USB Port
IR Port |
| Rear Panel: |
Proprietary connector for audio/power accessory panels. |
