SRS Labs Voltage Pre-amplifier, SR550/552 manual SR552 without a lock-in

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dual phase lock-in, use the R output to avoid phase shifts.

The SR552 without a lock-in

The SR552 can be powered with an external power supply. Power is applied through the 9 pin connector as described below.

Pin

Voltage

Current

1

+20 V

100 mA

2

+5 V

10 mA

6

-20 V

100 mA

7,8

Ground

 

All three voltages are required. Pins 7 and 8 should be tied together. All other pins should be left open. The gain will be 100 in this configuration. Grounding pin 3 will change the gain to 50, and grounding pin 4 will change the gain to 20. Grounding both pins 3 and 4 will change the gain to 10.

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Contents Model 02/65 SR550 Preamplifier Specifications Summary Operating Instructions DYN RES FS Sensitivity SR550 GainSR550 Without a LOCK-IN Pin Voltage CurrentParts List SRS part#PC Layout Model SR552 SR552 Preamplifier Specifications Summary Noise Figure Contour Connecting the SR552 FS Sensitivity SR552 Gain HighSR552 without a lock-in REF. SRS part# PIN D33 4-00082-401 RU7A 4-00032-401 RU7B 4-00032-401 SW1

SR550/552, Voltage Pre-amplifier specifications

SRS Labs, a renowned leader in audio technology, has made significant strides in the realm of audio amplification with the Voltage Pre-amplifier models SR550 and SR552. These pre-amplifiers are designed to deliver exceptional performance and fidelity, appealing to both professional and home audio enthusiasts.

The SR550 and SR552 are equipped with a host of features that ensure high-quality sound reproduction. They utilize state-of-the-art components and engineering techniques to minimize distortion and maintain signal integrity. One of the defining characteristics of the SR series is their low noise performance. The pre-amplifiers are designed with precision circuitry that effectively reduces background noise, allowing for a cleaner audio signal that is crucial for critical listening applications.

A key feature of the SR550 and SR552 is their adjustable gain settings. This allows users to fine-tune the amplification levels to match different sources and listening environments. Whether you are connecting a low-output microphone or a high-level line source, the adjustable gain ensures optimal performance across various setups.

Both models also support a wide frequency response range, making them suitable for a variety of audio applications, from studio recordings to live sound reinforcement. The frequency response extends well beyond the human hearing range, which ensures that even the most subtle details in recordings are faithfully reproduced.

In terms of connectivity, the SR550 and SR552 offer a range of input and output options. Users can connect various audio sources through XLR and TRS inputs, while balanced outputs maintain the integrity of the audio signal during transmission. This versatility makes them ideal for integration into existing audio systems.

Another notable technology featured in the SR series is SRS Labs’ proprietary noise reduction technology. This feature actively reduces unwanted background noise without compromising the audio clarity, providing a more immersive listening experience.

Durability is another hallmark of the SR550 and SR552, with robust construction and high-quality materials designed to withstand the rigors of regular use in both studio and live environments.

In conclusion, the SRS Labs Voltage Pre-amplifiers SR550 and SR552 stand out in the market for their exceptional sound quality, innovative features, and reliable performance. Whether for critical studio editing or live audio applications, these pre-amplifiers are engineered to meet the needs of audiophiles and professionals alike, ensuring an unparalleled listening experience.