Yamaha is a Japanese brand known for manufacturing a wide range of products, including musical instruments, audio equipment, electronics, and motorcycles.

Yamaha

The Yamaha YST-SW 150 is a subwoofer with a 100-watt amplifier and a frequency response range of 25Hz-180Hz. It features Yamaha's Advanced YST II (Yamaha Active Servo Technology II) for enhanced bass response.

YST-SW 150


  
In this article:

-   Check out how Auracast syncs up sound for everyone, making group hangouts way cooler.
-   Find out how it's turning places like train stations into spots with awesome sound.
-   Get the scoop on how Auracast works with all sorts of headphones and speakers.
-   Learn about Auracast's easy setup – it's pretty much like connecting to Wi-Fi.

Interesting? Continue reading ...

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**The Big Deal with Auracast**

Let's talk about Auracast - it's this new tech that's changing the way we hear things around us. Think of it like the next big thing after Bluetooth: it's built on Bluetooth LE Audio, but it's way more than just an upgrade. It's about making sound better and more accessible for everyone, not just the tech-savvy or audiophiles.

**Public Places Sound Better Now**

One of the coolest things about Auracast is how it can make everyday places sound amazing. Imagine stepping into a train station or an airport and instead of the usual muffled announcements, you hear everything crystal clear. Or, you're shopping and the background music actually sounds good. That's Auracast at work.

**Sharing the Sound, Without the Hassle**

Here's something else that's neat: Auracast lets you share what you're listening to with others, but in a super smooth way. Say you're at a concert with friends; you can all hook up to the same audio feed directly to your headphones. Everyone hears the same awesome quality sound, but you're not bothering anyone else around you.

**Not Just for Audiophiles**

Sure, if you're really into your sound, Auracast is going to be a big deal for you. It means better sound quality and more gadgets that work with it. But even if you're just someone who likes clear sound without fussing with a bunch of settings, Auracast is pretty cool. It's all about making good sound easy for everyone.

**Easy to Use, Even Easier to Enjoy**

One of the best parts? Auracast is super easy to use. It's kind of like connecting to Wi-Fi. Just a few taps and you're in. This is great news for everyone, including folks who might not be all that into tech. Plus, it's a big step forward for people with hearing difficulties, making it easier for them to enjoy sound, too.

**What's Next for Auracast?**

Auracast is still rolling out, so we're just seeing the start of what it can do. The idea is that soon, high-quality sound will be everywhere - in stores, at bus stops, you name it. It's not just about better sound quality; it's about making environments more welcoming and inclusive through sound.

**Final Thoughts**

In a nutshell, Auracast is here to shake things up in how we experience sound in our day-to-day lives. From public places to personal listening, it's set to make things sound better for everyone. It's an exciting time for anyone who enjoys good sound - and let's be honest, who doesn't? Keep an eye (or an ear) out for Auracast; it's about to become a big part of our world.

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Auracast: A Game-Changer in How We Listen to Sound

Auracast: the new way to sync and enjoy music together, no matter the crowd size or location.

Marantz, a stalwart in the audio equipment landscape, has once again demonstrated their commitment to melding classic design with contemporary technology in the form of two new offerings: the CD 50n Premium CD and Network Audio Player, and the MODEL 50 Premium Integrated Stereo Amplifier.

The CD 50n emerges as a testament to Marantz's 70-year evolution, boasting an ability to handle ultra-high resolution audio—supporting PCM up to 384 kHz/32 bit and DSD 128. This feature is a boon for enthusiasts seeking to experience the full breadth of their high-resolution recordings. Its inclusion of HDMI ARC allows listeners to enjoy their TV, movies, and games with the warmth and spaciousness that Marantz is known for. True to their legacy, Marantz integrates custom digital filters to ensure their sound signature is preserved throughout the digital to analog conversion process.

This player is not just a treat for the ears but also the eyes, with its elegant design embodying a balance between timeless aesthetics and modern needs. Furthermore, it is engineered for seamless streaming, courtesy of HEOS® Built-in, which incorporates services like Airplay 2, Spotify Connect, Tidal, and TuneIn Radio, among others.

Complementing the CD 50n is the MODEL 50 Integrated Amplifier, designed to drive loudspeakers with total control through its 70 watts per channel capability. It features a Class A/B amplifier and a collection of six analog inputs, including a Moving Magnet Phono stage that amplifies the nuanced tones of vinyl records. The MODEL 50's design omits digital audio to prioritize analog purity and simplicity, ensuring intuitive operation and eliminating the risk of interference from digital circuitry.

Both the CD 50n and MODEL 50 share a promise of quality, with Marantz affirming that every unit is a product of meticulous craftsmanship, aimed at delivering the 'Most Musical Sound'. Each comes with a generous 5-year warranty, a testament to the confidence Marantz has in its products' longevity.

For the prospective buyer, the decision between these two might come down to personal need and the existing components in their audio setup. Marantz encourages customers to trust their own ears when considering these products, as personal preference is paramount in the experience of music.

In the conversation around these new releases, questions have arisen regarding their interoperability and whether the advanced converters in the CD 50n make a significant difference when paired with the likes of the Marantz Cinema 50, or if it's compatible with Blu-ray disc playback (it is not, as it's designed solely for Compact Discs).

As for the MODEL 50, queries have been addressed regarding its amplifier stage and power output compared to other models like the Stereo 70s. Marantz clarifies that the Model 50 boasts a more refined amplifier stage with advanced power supplies that can manage more demanding speaker loads, ensuring compatibility with a broader range of loudspeakers and better control across various volume levels.

In conclusion, both the CD 50n and MODEL 50 represent Marantz's unwavering pursuit of audio excellence, merging their historic attention to sonic detail with the demands of modern audio environments. Whether one is diving into the depths of streaming audio or seeking the authoritative drive of a robust amplifier, these new entries into the Marantz family stand ready to enhance the listening experience.

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Marantz CD 50n & MODEL 50: Reinventing Audio Fidelity

Meet Marantz's latest masterpieces: the CD 50n and MODEL 50. These state-of-the-art audio components.

#### Why Acoustic Terminology Matters

Understanding the language of acoustics is not just for scientists or sound engineers; it's essential for anyone passionate about achieving the best sound experience, whether you're an audiophile or a professional. Knowing terms like "Reverberation" or "Absorption" can help you diagnose problems in your listening room or even enhance your enjoyment of music or movies.

#### The Four Pillars

At the heart of acoustic understanding are four key terms: Reverberation, Absorption, Reflection, and Diffusion. Think of these as the four pillars that uphold the 'temple' of sound quality. Understanding these terms can significantly elevate your listening experience.

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### Unpacking Reverberation

#### What is Reverberation?

Reverberation is the continuation of sound in a particular space even after the original sound source has stopped. Imagine clapping your hands in an empty room; the sound lingers for a few moments, bouncing off the walls, ceiling, and floor. That lingering is reverberation. Too much of it can muddy sound quality, while too little can make a room feel "dead."

#### Reverberation Time (RT60)

RT60 is a metric that measures how long it takes for the sound to decay by 60 decibels in a room. In simple terms, it gauges how 'echoey' a room is. Measuring RT60 helps in tuning a room for optimal sound quality. For example, a home theater might aim for a shorter RT60 to keep dialogues crisp, while a concert hall might aim for a longer RT60 to enrich musical notes.

#### The Role of Reverberation in Different Environments

Reverberation behaves differently depending on where you are. In a recording studio, excessive reverberation is usually undesirable as it can muddle the clarity of recordings. Conversely, in a concert hall, a certain level of reverberation can add richness and warmth to live performances. Even in your living room, getting the reverberation right can make your hi-fi system shine.

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### The Absorption Factor

#### What is Sound Absorption?

Sound absorption refers to the process where materials, like acoustic foam or carpeting, "soak up" sound waves, reducing echo and background noise. Imagine sound absorption like a sponge soaking up water, but in this case, the sponge is soaking up sound energy.

#### Noise Reduction Coefficient (NRC)

The Noise Reduction Coefficient (NRC) is a number between 0 and 1 that indicates how well a material absorbs sound. A higher NRC means better absorption. For example, acoustic ceiling tiles with an NRC of 0.7 would absorb 70% of the sound hitting them, reflecting the remaining 30% back into the room.

#### Practical Applications of Absorption

In a home theater, strategic placement of absorbing materials can help reduce unwanted noise and echoes, making dialogues and musical scores clearer. In recording studios, absorption is essential for capturing the 'true' sound of an instrument or voice without interference from the room itself. Even in industrial settings, absorption can be crucial for employee comfort and safety, mitigating the impact of machine noise.

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### Understanding Reflection

#### The Basics of Sound Reflection

Sound reflection is the phenomenon where sound waves bounce off surfaces like walls, floors, and ceilings. Imagine throwing a ball at a wall; it comes back to you, right? Sound behaves similarly. When sound waves encounter a hard surface, they reflect back into the room. This can either be a positive or negative factor, depending on what you're aiming for acoustically.

#### First Reflection Points

First reflection points are the initial surfaces that sound waves hit after leaving a speaker. They're critical because these first reflections will reach the listener almost immediately after the direct sound, and can either clarify or muddy the sonic picture. In most cases, these are spots on your side walls, ceiling, or floor. Knowing where these points are can help you decide where to place absorbing or diffusive materials.

#### Reflective Surfaces and Sound Quality

Reflective surfaces aren't all bad; sometimes they're exactly what a room needs. For example, in a home theater, you might want some reflection off the side walls to make the audio sound more spacious. However, in a recording studio, excessive reflection could distort the true sound of an instrument or voice. The key is to find a balance between reflective and absorbent surfaces.

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### The Complexity of Diffusion

#### What is Sound Diffusion?

Diffusion is the scattering of sound waves in multiple directions. Unlike absorption or reflection, which deal with sound in a more linear way, diffusion disperses sound, reducing the sense of localization. Think of it like a garden sprinkler for sound; it scatters water (sound) uniformly in different directions.

#### Types of Diffusers

There are various types of diffusers, but two common ones are Quadratic Residue Diffusers (QRD) and Primitive Root Diffusers (PRD). QRDs use a sequence of well depths to scatter sound, while PRDs utilize a different mathematical formula for a more randomized scattering. Both have their strengths and weaknesses, but the goal is the same: to spread sound energy across a room evenly.

#### The Role of Diffusion in Room Acoustics

Diffusion can enhance a space by making it sound larger and more open. It helps break up sound energy and redistributes it throughout the room. This is beneficial in places like home theaters where you want a balanced, immersive sound field, or in music studios where you want to capture a more natural ambiance.

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### Putting it All Together

#### The Interplay Between the Four Terms

Understanding Reverberation, Absorption, Reflection, and Diffusion in isolation is good, but appreciating how they interact is even better. For instance, too much absorption can make a room sound lifeless, but adding diffusion can breathe life back into it. Likewise, too much reflection could cause problems, but the right amount of reverberation could fix it.

#### Case Studies

Real-world examples can illustrate how a blend of these four elements can create an acoustically optimized space. Whether it's a Grammy-winning recording studio or a state-of-the-art home theater, the principles remain the same: balance and harmony between these four pillars.

#### Final Thoughts and Further Resources

Mastering these terms is essential for anyone interested in acoustics, whether you're a professional or just passionate about sound. For those looking to deepen their knowledge, various books, online courses, and consultation services are available to guide you further.

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What is Reverberation, Absorption, Reflection, and Diffusion

A proper understanding of acoustical terminology is essential for effective room treatment. Learn how they impact room treatment and sound quality.

YST-SW 150

by Yamaha

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What is Reverberation, Absorption, Reflection, and Diffusion