SRS Labs SR560 manual Noise Contours

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CALIBRATION AND REPAIR

The other two fuses are in-line with the batteries. These fuses will blow if the rear panel ±12 VDC supplies are shorted, or if the unit sources or draws excessive current to or from the batteries.

NOISE CONTOURS

The noise contours (shown upper right) plot the noise figure as a function of source impedance and frequency. Noise Figure (NF) is defined as:

•NF = 20 log (Output noise / (Gain X Source Thermal Noise)

Alow noise figure means that the output noise is dominated by the thermal (Johnson) noise of the source. A high noise figure indicates that the amplifier's output noise is dominated by the amplifier's own noise, which is much larger than the thermal noise of the source.

amplifier's "1/f" noise is large relative to the thermal noise of the source.

The NF gets worse for large source impedances and high frequencies because the signal is attenuated (hence the gain reduced) by the shunting capacitance of the input.

Under no circumstances will adding source resistance reduce the amplifier's output noise! While this does improve the NF, it does so by making the source so noisy that the amplifier is quiet in comparison.

The NF gets worse for low source resistances because the source's thermal noise gets very small, while the amplifier's input voltage noise stays relatively constant.

The NF gets worse for low frequencies and low source resistances because the

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Contents Model SR560 Page Table of Contents Appendix B PCB SR560 Revision F 9/89 SchematicsCalibration and Repair Appendix aInstrument Overview Introduction and SetupPreparation for USE Environmental Conditions Accessories FurnishedRepackaging for Shipment Use in Biomedical ApplicationsPage SR560 LOW-NOISE Preamplifier Specifications Chart SpecificationsSpecifications Source PowerOperation and Controls Front Panel Operating SummaryFilters Output Gain ModeReset GainRear Panel Operating Summary AC Power InputAmplifier Power Output Battery ChargerRS-232 Interface Battery Care and UsageBattery Care Blanking InputAvoid Deep Discharge Output Stages Configurable Filters and GainCircuit Description Differential LOW-NOISE Front ENDMicroprocessor Battery Charger and PRE-REGULATORSOverload Detection Rear Panel Interfaces Power RegulatorsFront Panel Batteries and P.E.MCalibration Offset AdjustmentFront END Replacement Calibration and RepairFuse Replacement SR560 Offset Adjustment ProcedureBattery Replacement Noise Contours Dynamic Reserve Input Voltage NoiseMaximum Calibration and Repair Introduction CommandsAppendix a Remote ProgrammingAppendix a Non-Essential Noise Sources Appendix BNoise Sources and Cures Intrinsic Noise SourcesInductive Coupling Capacitive CouplingThermocouple Effect Resistive Coupling or ‘Ground Loops’Microphonics Appendix B Front Panel Parts List SR560 Component Parts ListMain Board Parts List 22U MIN 01U Axial 804 00225-548 Insl MTP5N05 SR560 Component Parts List SR560 Component Parts List PIN Mach SR566 Assy Adhes Tape Miscellaneous Parts List SR560 Component Parts List

SR560 specifications

SRS Labs SR560 is a cutting-edge audio enhancement technology that has gained recognition for its ability to deliver an immersive sound experience. Built upon years of research, the SR560 utilizes proprietary algorithms to achieve high-fidelity sound output while maintaining an incredibly dynamic range.

One of the most notable features of the SR560 is its adaptive audio processing, which adjusts sound dynamics based on the content being played. This means that whether one is listening to music, watching a movie, or playing video games, the sound quality is optimized in real-time to provide the best listening experience. The SR560 excels at enhancing dialogue clarity in films, ensuring that important audio elements are never lost amidst background sounds.

Another key characteristic of the SR560 is its support for multi-channel audio. With the rise of surround sound systems, the SR560 is designed to integrate seamlessly with 5.1 and 7.1 speaker setups. This ensures that users can enjoy a true surround sound experience, where each audio channel is processed independently to create a lifelike auditory environment. The SR560’s processing capabilities allow it to convert standard stereo audio into multi-channel output, enriching the listening experience for any audio format.

SRS Labs has equipped the SR560 with advanced bass optimization technology. This feature enhances low-frequency sound, providing deep, rich bass without distortion. Whether it’s the thumping beats of music or the rumble of action-packed movies, the SR560 ensures that users can experience the full spectrum of audio without compromising on quality.

Furthermore, the SR560 showcases state-of-the-art sound management features that provide users with customizable audio profiles. This allows users to tailor their audio experience according to personal preferences, whether they prefer a more balanced sound, enhanced bass, or boosted treble frequencies. The intuitive interface ensures that adjustments can be made effortlessly.

In conclusion, the SRS Labs SR560 stands out as a versatile audio enhancement technology that caters to the needs of various audio consumers. By combining adaptive processing, multi-channel support, bass optimization, and customizable profiles, the SR560 ensures a rich and immersive audio experience. As the demand for high-quality sound continues to rise, the SR560 is poised to remain a significant player in the evolution of audio technology.
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