Pass Labs SR2 owner manual Rev

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Diffusion generally is a good thing and excellent listening rooms typically have diffusion in abundance. Great sounding rooms are either large enough or absorptive enough to discourage strong standing waves in the listening area. Good sounding rooms that present a proper spatial image tend to be very symmetrical in layout, left to right.

Under these idyllic room conditions speaker placement is frequently a simple task. In an idyllic world the speakers would be well out in the room, typically about 1/3 the distance of the rooms front to back dimension. The listener would be at mid point in the room or slightly to the rear of mid-point. The listener and the speakers would form an equilateral triangle, such that the distance speaker to speaker would be identical to the distance from either speaker to listener. The distance from speaker to sidewall would be unequal to the distance from the speaker to the back wall. To solidify the acoustic image placement in stereo or multi-channel recordings at the listening position the speakers will typically be toed in slightly toward the listening position, rather than square with the rear and sidewalls. The tweeter height of the speaker will be either at the same height as the listener’s ear or in some way angled as to achieve an equivalent result. The SR-2 cabinets have adjustable feet, front and rear to optimize apparent driver height.

Lucky are the very few listeners who have well placed equipment in a well-engineered dedicated listening space either by design or happenstance. For the rest of us we have the Pass Laboratories SR-2. The Pass Laboratories SR-2 Loudspeaker was built to address less than perfect rooms and less than perfect speaker placement.

SR2 Owners Manual

Rev 0.2

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Contents Pass Rev Rev Unpacking Rev Position and adjustment Rev Rev Specifications Service@passlabs.com

SR2 specifications

Pass Labs SR2, the latest addition to the highly respected Pass Labs family of high-fidelity audio components, has made a significant impact on the audiophile community. This stunning piece of engineering represents a continuation of the brand’s commitment to delivering an unparalleled listening experience through cutting-edge technology and thoughtful design.

The SR2 is a stereo power amplifier that boasts a robust power output, enabling it to drive a wide range of speakers with ease. With an output rating of 200 watts per channel into 8 ohms and 400 watts per channel into 4 ohms, the SR2 is built to handle complex musical passages while maintaining clarity and dynamic range. This power capability is complemented by an impressive current delivery, ensuring that it can manage even the most demanding loads.

One of the standout features of the SR2 is its use of the unique Pass Labs Class A amplifier topology. The design minimizes crossover distortion and preserves the natural harmonic richness found in music. By operating in Class A mode, the SR2 delivers a warm, inviting sound characteristic that is often sought after by audiophiles.

The SR2 also incorporates advanced circuit technologies, such as the fully complementary output stage and a high-speed feedback mechanism. This allows for a refined response across the frequency spectrum, resulting in low levels of distortion and a high degree of linearity. The result is a soundstage that feels expansive and immersive, with an incredible sense of space around instruments and vocals.

Aesthetically, the SR2 carries the hallmark design elements of Pass Labs, featuring an aluminum chassis with a distinctive brushed finish. The elegant front panel includes a simple yet functional control interface, making it easy for users to operate. Additionally, the amplifier is equipped with premium components throughout, including top-quality capacitors and resistors, which adhere to Pass Labs' high standards for performance and reliability.

Thermal management is another crucial aspect of the SR2's design. The ample heat sinks ensure that the amplifier remains cool during operation, promoting longevity and consistent performance. The unit also offers a standby mode, conserving energy when not in active use without sacrificing sound quality.

In summary, the Pass Labs SR2 is a remarkable amplifier that brings together power, precision, and artistry. Its advanced technologies and thoughtful engineering make it a compelling choice for both audiophiles and music lovers alike, ensuring that every listening session is a memorable experience. Whether you're listening to the delicate nuances of a string quartet or the thunderous depths of a rock concert, the SR2 is designed to deliver a truly captivating performance.