A1B1: 470 - 614MHz
B1C1: 567 - 691MHz
961*: 961 - 1014MHz
Lectrosonics DSR4 4-Channel Digital Hybrid Receiver
Features
- Two independent channels, compact design
- Vector diversity for superior performance
- Latest generation of SR Series: Compatible with huge existing ecosystem
- Compatible with D2, HDM, Duet and DCHX Digital modes and all hybrid modes
- 24 bit/48 kHz digital for flawless audio
- AES 256-bit, CTR mode encryption, with 4 different key policies available
- Analog and AES3 digital audio outputs
- External DC powering options and USB input for firmware updates and data transfer
The DSR4 digital receiver provide the highest level of RF and audio performance available with a versatile feature set in a compact design for camera mounted applications. Settings can be made from the front panel, making the unit ideal for use in camera hop configurations, in bags and on sound carts. An RF spectrum analyzer and SmartTune are built into the receivers to alleviate interference problems in an increasingly congested RF spectrum.
The mechanical design of the receivers fits into the SuperSlot ecosystem and combines field-proven features developed over many years of experience in motion picture and television production. To decrease weight, the DSR provide a two channel receiver in one unit powered by external DC. The receivers are also equipped with an IR port for data transfer between units. The machined aluminum housing and panels are surfaced with a hard-anodized 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-sensitization.
Diversity Options
An ideal diversity system constructively combines all the energy available at both antennas. The DSR4 offers two diversity options: for 4-channel operation, each channel combines signals from both antennas in or out of phase, depending on field strength at each antenna and which combination yields the best results. For 2-channel operation, receivers can be paired for Vector Diversity operation. The Vector subsystem smoothly and continuously combines RF signals from both channels, with differing phase angles in order to obtain maximum energy. The four receivers in the DSR4 can be use separately or combined in pairs.
Compatibility
The DSR4 offers compatibility with the D-Squared and Duet digital transmitters, including the DBu, DHu, DPr, DBSM, DCHT, and M2T, and backward compatibility with any Digital Hybrid Wireless® transmitters including the SM and SMWB series, WM, HM Series, MM400 Series, HH Series, LT, LMb, UM400 Series, and SSM.
SmartNR TM
With a noise floor at -120 dBV and a frequency response to 20 kHz, high frequency noise in the source audio is more apparent than in conventional wireless systems. The SmartNR algorithm has three modes. When OFF, no noise reduction is performed. When NORMAL is selected, enough noise reduction is applied to remove most of the hiss from the mic preamp and some of the hiss from lavaliere microphones. When FULL is selected, enough noise reduction is applied to remove most of the hiss from nearly any signal source of reasonable quality, assuming levels are set correctly at the transmitter.
*961 Frequency bands are available on special request, please contact us for an accurate lead time.
Specifications
| Operating Frequencies (MHz): | A1B1: 470.100 - 614.375
B1C1: 537.600 - 691.175
961: 961.100 - 1014.900 |
| 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: | +11 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 TA3 male (mini XLR) balanced output adapter
• Battery sled adapters with TA3 male outputs
• Front panel TA5 male for 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): * |
| No Limiting | OFF: 103.5
NORMAL: 107.0
FULL: 108.5 |
| w/Limiting | OFF: 108.0
NORMAL: 111.5
FULL: 113.0 |
| Input Dynamic Range: | 125 dB (with full Tx limiting) |
| Overall Latency (time delay): | 1.4 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. |
| External Power: | Minimum 9 Volts to maximum 17 VDC 2.7 W; 225 mA at 12 VDC |
| Weight: | 408 grams (14.4 oz.) w/o audio adapter |
| Dimensions: | 3.23” wide x 1.23” high x 5.50” deep 82 wide x 31 high x 140 deep mm |
FCC Notice
NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:
- Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and receiver.
- Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
- Consult the dealer or an experienced radio/TV technician for help.
Changes or modifications to this equipment not expressly approved by Lectrosonics, Inc. could void the user’s authority to operate it.
Hire Equipment
We have an extensive inventory of audio equipment for hire with competitive rates ready at a moment's notice. We pay the most meticulous attention to detail in our hire prep so you can travel to shoots with the peace of mind that you have everything you need.
Weekly Rental
For weekly rental, you can pick up your gear the day before your production shoot after 3:00pm, and return by 10:00am after your shoot day. In the case of 7 day rental, you will only be charged for 4 billing days.
Shipping
If shipping is required, we require a two day minimum hire period, with a travel day inbetween.
Cancellations
Orders can be cancelled for free up to 24 hours before pick up date, any notice within 24 hours of the pick up date will be charged a prep fee of 25% of the total amount.
Insurance
Customers will provide a certificate of insurance listing Everything Audio as "loss payee" and "additional insured".
