1.6µF. The real portion of the input impedance (0.5 Ω) determines the noise performance. See page 7 for detailed information on input impedance.

The input can be floated up to ±100 VDC with respect to the chassis. The maximum AC input before overload is 14 mV RMS (±20 mV peak) when the unit is in the buffered mode. In either mode, the input is clamped at about 350 mV RMS (±0.5 V peak). Care should be taken when the unit is used in the bypassed mode, since a ±0.5 V peak input becomes ±50 V at the output.

In the buffered mode, the OVERLOAD indicator will light when the preamplifier overloads. An overload that occur after the preamplifier will be indicated by the lock-in amplifier’s overload indicator. The SR554’s overload indicator is only

functional when the unit is in the buffered mode. If the unit is operated in the bypassed mode and power is applied, the overload LED may light even when the unit is not overloaded. This does not indicate an overload, but is due to leakage current of the buffer amplifier and its protection circuitry. To avoid this, power should not be connected when the unit is used in the bypassed mode.

OUTPUT CONNECTION

For single ended operation the (A) Output of the SR554 should be connected to the

(A)Input of the lock-in amplifier. The center conductor carries the signal and

the shield is ground. For most applications, this single connection will be adequate.

For situations with potential noise pick-up on the cable, it may be better to operate in

4

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SRS Labs SR554 manual Output Connection
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SR554 specifications

SRS Labs SR554 is an advanced audio processing solution that aims to enhance audio quality across various media platforms. Recognized for its innovative approach to sound enhancement, the SR554 incorporates a variety of technologies designed to create a richer, more immersive listening experience.

One of the standout features of the SRS Labs SR554 is its Superior Sound technology, which employs advanced algorithms to optimize audio output for different types of content. Whether users are listening to music, watching movies, or playing video games, the SR554 intelligently adjusts the audio output to suit the specific requirements of each medium. This adaptability is crucial in today’s diverse audio landscape, ensuring that users enjoy the best possible sound quality regardless of the source.

The SR554 also integrates SRS's renowned TruBass technology, which enhances low-frequency audio signals to produce deeper, more resonant bass without sacrificing clarity. This feature is particularly beneficial for genres such as hip-hop and electronic dance music, where bass plays a pivotal role in the overall impact of the audio experience. By creating a more balanced and full-bodied sound, the SR554 caters to audiophiles and casual listeners alike.

Additionally, the SR554 is equipped with SRS Virtual Surround technology, which simulates a multi-channel audio experience from standard two-channel setups. This feature provides users with an enveloping soundstage, making it ideal for home theater systems and gaming setups. By creating a perception of height, width, and depth in sound, the SR554 enhances the realism of audio playback, making users feel as though they are part of the action.

Compatibility is another key characteristic of the SR554. The solution supports a wide range of audio formats, ensuring that it can seamlessly integrate into various devices and platforms, from smartphones to high-end audio systems. This versatility allows users to experience enhanced audio quality no matter how or where they choose to consume their media.

In terms of user customization, the SR554 offers an array of adjustable settings, allowing users to tailor their audio experience according to their preferences. This tailored approach means that whether someone seeks a more vibrant sound or a subtle auditory atmosphere, the SR554 can be fine-tuned to meet those needs.

In summary, the SRS Labs SR554 stands out in the crowded audio enhancement market through its innovative technologies geared towards delivering superior sound, enhanced bass, and immersive audio experiences. Its adaptability, compatibility, and customization options make it a compelling choice for anyone seeking to elevate their audio experience across a wide range of media formats.
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