Just when we thought bass couldn't get any better, Velodyne drops the new SPL-X series, and it's got the audiophile community buzzing. These subwoofers aren't just about shaking the room—they're about delivering precision and depth that's been missing in our setups.

The SPL-X series comes in four sizes: 10, 12, 15, and a massive 18 inches. Each model is powered appropriately, starting from 1000W RMS for the 10-inch version, up to a staggering 1800W RMS for the 18-inch beast. That's some serious power, ensuring that whether you're watching a movie or spinning your favorite vinyl, the low-end frequencies are felt as much as they're heard.

What's really exciting is the advanced DSP system they've incorporated. Velodyne is known for their digital signal processing, but this time they've upped the game. The subs are equipped with a new DSP platform, previously seen in their MiniVee X and SC1500 models, but further enhanced for precision control.

The drivers feature carbon fiber cones, which we all know offer a great combination of rigidity and lightness. Paired with four-layer, 102mm voice coils and triple-vented magnet systems, these subs are built to handle high power levels without distortion. The enclosures are no joke either—built from 38mm thick panels and internally braced to minimize resonance, ensuring that all you hear is pure, unadulterated bass.

Connectivity is versatile, with both RCA and XLR inputs and outputs. This means integrating the SPL-X into your existing setup should be a breeze, whether you're running a traditional stereo system or a full-blown home theater.

One of the standout features is the new AutoEQ mobile app. This isn't just another control app; it allows for automatic room calibration using the included microphone. Adjusting settings like crossover frequencies, subsonic filters, power modes, delay, and even a night mode can all be done right from your phone. It's about time we had this level of control without needing a degree in audio engineering.

Velodyne showcased the SPL-X series at ISE 2025 in Barcelona, and while pricing hasn't been announced yet, given the specs, these subs are likely to be a solid investment for those serious about their sound. Alongside the SPL-X, Velodyne also introduced new products like the SC1500 DSP subwoofer amplifier, new in-wall subwoofers, and even special editions of the MiniVee X.

In short, if you're looking to upgrade your low end and want a subwoofer that combines raw power with refined control, the Velodyne SPL-X series is definitely worth keeping an eye on.

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Velodyne Launches Powerful SPL-X Series Subwoofers with Advanced DSP


The term "remastered" often captures the attention and imagination of audiophiles and casual listeners alike. The promise of a cleaner, richer, and more detailed sound experience is compelling. However, remastering is a complex process that can either enhance or deteriorate the quality of an audio track. It's essential to understand what remastering entails and how to sift through the good, the bad, and the ugly of remastered versions.

### The Good, The Bad, and The Ugly of Remasters

#### The Process of Remastering

Remastering involves taking original audio tapes and transferring them to a digital format. The process can correct errors, improve sound quality, and sometimes even add new elements. However, these improvements are not guaranteed; the end result is contingent on the skill and intent of the engineers.

#### The Loudness War

One of the most contentious issues surrounding remasters is the so-called "loudness war." This refers to the tendency of producers to compress the dynamic range of a track to make it as loud as possible, sacrificing audio quality for volume. This can be especially jarring for audiophiles who have high-end equipment capable of capturing a wide dynamic range.

#### The "Sacriligious" Alterations

Beyond the loudness war, some remasters take the liberty of altering the original tracks in ways that many consider disrespectful to the original work. The use of auto-tune on classic vocal performances or changing the instrumentation are examples of these kinds of alterations.

### Vintage Pressings and Audiophile Labels

#### The Allure of Original Pressings

For those cautious of the possible pitfalls in remastered versions, vintage pressings—especially from periods like the early '80s—are highly prized. These pressings were often made with a greater dynamic range and are generally considered to offer a more authentic listening experience.

#### Specialty Audiophile Labels

Companies like MoFi (Mobile Fidelity Sound Lab) specialize in high-quality remastering that respects the original audio. They often use the original master tapes and employ meticulous care in the remastering process, making them a preferred choice for audiophiles.

### The Role of Equipment

The equipment used for playback can significantly affect how a remastered track sounds. Higher-end equipment can make a poor remaster sound decent, or a good remaster sound extraordinary. For example, using a quality DAC and network streamer like the Eversolo DMP-A6 can dramatically improve your listening experience.

### Conclusion

In the intricate world of audio remastering, not all remasters are created equal. For audiophiles and discerning listeners, the key is to sift through the multitude of options to find those that respect and enhance the essence of the original recording. Whether you find solace in vintage pressings or place your trust in reputable audiophile labels, understanding the nuances of remastering can help you make informed choices that elevate your auditory experience.

Photo montage showcasing a vintage vinyl record on the left and a digital audio workstation on the right.

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The Complex World of Audio Remastering

Delve into the intricacies of audio remastering. Learn what makes a remaster truly great, how to navigate the pitfalls of poor remasters, and discover the role of equipment in shaping your auditory experience.


For audio aficionados, the term 'soundstage' is akin to a holy grail. The notion of a three-dimensional sonic space where each instrument and vocal takes its place is an alluring pursuit. But achieving that perfect soundstage is more than just a matter of buying the most expensive gear. It's about the intelligent application of techniques, settings, and positioning.

## The Role of the Subwoofer

A subwoofer's importance in crafting a soundstage is often underestimated. When calibrated carefully, it adds layers to the music, generating a sense of depth and dimensionality. A well-calibrated subwoofer neither overpowers the music nor stays in the background but blends in seamlessly. Modern technologies like Digital Signal Processing (DSP) can offer meticulous calibration options. Time alignment is another overlooked but crucial factor. Synchronizing your subwoofer's output so that it reaches your ears in perfect harmony with your primary speakers can make a significant difference.

## Triangle Equilibrium and Toe-In

The "Triangle Rule" posits that the listener and the two primary speakers should form an equilateral triangle. However, the 'toe-in' factor can add a layer of nuance to this equation. Toe-in refers to the degree to which the speakers are angled toward the listener. More toe-in often results in a more focused, narrow soundstage, while less toe-in can produce a wider, more expansive sonic landscape.

## Role of Room Acoustics

While much of the conversation about soundstage revolves around equipment, room acoustics can be just as critical. Moving your speakers away from the walls can dramatically change the soundstage's depth. Symmetry is another vital aspect; the distance between the speakers and the walls should be uniform. This is where tools like Room EQ Wizard (REW) come into play, allowing you to make data-driven decisions about speaker positioning.

## The Impact of Pre-Amps and Cabling

One often-overlooked aspect of soundstage development is the role of pre-amplifiers and cables. These elements can subtly—or sometimes not-so-subtly—alter the audio output. Changing your pre-amplifier can significantly affect the depth and width of your soundstage, so it's worth exploring this option if you're looking for improvements. Even speaker cables and interconnects can make a difference, so consider experimenting with different types to see what suits your setup best.

## The Importance of Trial and Error

When it comes to fine-tuning your soundstage, experimentation is your best friend. Feel free to move your speakers around, tweak the settings on your subwoofer, and even change your seating position. Using familiar music tracks to gauge these adjustments is a tried and true method for gauging their effectiveness.

## Measurements and Tools

While your ears are indeed the final judge, having tools and software to measure your setup can add a layer of objectivity to the fine-tuning process. REW or similar room measurement software can offer insights into room acoustics and speaker performance, allowing you to adjust based on empirical data.

## Conclusion

Fine-tuning a soundstage is a blend of art and science. While there is no one-size-fits-all formula, the guidelines and tips in this article should provide you with a roadmap to enhance your audio experience. Remember, every change you make should aim to maximize your immersion and enjoyment of the music. So start experimenting and make that ideal soundstage a reality!

the essence of a soundstage dedicated purely to acoustic performances, featuring a selection of musical instruments

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The Art of Fine-Tuning Your Soundstage

Discover the science and art behind creating the perfect soundstage for your audio setup. Explore techniques, role of equipment, and expert insights to fine-tune your sound experience.


### Introduction to Room Acoustics

#### [The Importance of Room Acoustics in Recording and Playback](https://hifi.fan/article/the-importance-of-room-acoustics-in-recording-and-playback)

Understanding the acoustical properties of a room is not just an academic exercise; it's a critical factor in both recording and playback scenarios. The physical attributes of the space influence sound quality to such a degree that even the most advanced equipment may not reach its potential in a poorly designed room. [continue reading...](https://hifi.fan/article/the-importance-of-room-acoustics-in-recording-and-playback)

#### [Fundamental Concepts: Sound Waves, Frequency, Amplitude](https://hifi.fan/article/fundamental-concepts-sound-waves-frequency-amplitude)

To fully grasp the complexity of room acoustics, one must understand the basic principles of sound. Sound travels in waves, characterized by their frequency and amplitude. Frequency refers to the pitch of the sound, while amplitude denotes its loudness. [continue reading...](https://hifi.fan/article/fundamental-concepts-sound-waves-frequency-amplitude)


#### [Problems Caused by Poor Room Acoustics: Echo, Flutter, Phase Issues](https://hifi.fan/article/problems-caused-by-poor-room-acoustics-echo-flutter-phase-issues)

Inadequate acoustics can lead to various problems, such as echo, flutter, and phase issues. Echo is a time-delayed repetition of sound, while flutter is a series of rapid, repeated echoes. Phase issues occur when sound waves interact in a way that causes them to either reinforce or cancel each other out. [continue reading...](https://hifi.fan/article/problems-caused-by-poor-room-acoustics-echo-flutter-phase-issues)

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### Understanding Acoustic Terminology

#### [Definitions of Terms: Reverberation, Absorption, Reflection, and Diffusion](https://hifi.fan/article/definitions-of-terms-reverberation-absorption-reflection-and-diffusion)

A proper understanding of acoustical terminology is essential for effective room treatment. Reverberation refers to the persistence of sound in a space after the original sound has ceased. Absorption is the process by which a material takes in sound energy, thereby reducing reflected sound. Reflection, conversely, occurs when sound bounces off a surface. Diffusion is the dispersal of sound energy in multiple directions. [continue reading...](https://hifi.fan/article/definitions-of-terms-reverberation-absorption-reflection-and-diffusion)

#### [Introducing Acoustic Metrics: NRC (Noise Reduction Coefficient), STC (Sound Transmission Class)](https://hifi.fan/article/introducing-acoustic-metrics-nrc-noise-reduction-coefficient-stc-sound-transmission-class)

Acoustical metrics such as the Noise Reduction Coefficient (NRC) and Sound Transmission Class (STC) are quantitative measures used to describe a material's acoustical properties. NRC indicates how effective a material is at absorbing sound, while STC measures how well it prevents sound transmission between spaces. [continue reading...](https://hifi.fan/article/introducing-acoustic-metrics-nrc-noise-reduction-coefficient-stc-sound-transmission-class)

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### The Science of Sound Absorption

#### [How Different Materials Absorb Sound](https://hifi.fan/article/the-science-of-sound-absorption)

Various materials exhibit distinct sound-absorbing properties. Understanding these differences is critical for effective room treatment. [continue reading...](https://hifi.fan/article/the-science-of-sound-absorption)

#### [Types of Sound-Absorbing Materials: Fiberglass, Foam, Rockwool](https://hifi.fan/article/analyzing-material-sound-absorption-a-path-to-acoustic-harmony)

Common sound-absorbing materials include fiberglass, foam, and rockwool. Each has its advantages and disadvantages, influenced by factors such as density, thickness, and surface texture. [continue reading...](https://hifi.fan/article/analyzing-material-sound-absorption-a-path-to-acoustic-harmony)

#### [Health and Safety Considerations](https://hifi.fan/article/the-science-of-sound-absorption#health-and-safety-concerns-in-acoustic-material-selection)

When choosing materials, it's also important to consider health and safety. Some materials may emit volatile organic compounds (VOCs) or pose fire hazards. [continue reading...](https://hifi.fan/article/the-science-of-sound-absorption#health-and-safety-concerns-in-acoustic-material-selection)

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### The Role of Room Geometry

#### [How the Shape and Size of a Room Affect Acoustics](https://hifi.fan/article/the-role-of-room-geometry-a-tale-of-basements-cathedrals-and-living-rooms)

The physical dimensions and shape of a room significantly impact its acoustical properties. Square or rectangular rooms, for instance, are more prone to issues such as standing waves compared to irregularly shaped rooms. [continue reading...](https://hifi.fan/article/the-role-of-room-geometry-a-tale-of-basements-cathedrals-and-living-rooms)

#### [Room Modes and Standing Waves](https://hifi.fan/article/understanding-room-modes-and-standing-waves-in-hi-fi)

Room modes are natural resonances that occur in a room, often resulting in uneven frequency response. These are directly influenced by the room's dimensions. [continue reading...](https://hifi.fan/article/understanding-room-modes-and-standing-waves-in-hi-fi)

#### [Basic Calculations for Identifying Room Modes](https://hifi.fan/article/mastering-room-acoustics-identifying-and-treating-room-modes)

Understanding room modes often involves mathematical calculations to identify problematic frequencies. This information is critical for effective acoustic treatment. [continue reading...](https://hifi.fan/article/mastering-room-acoustics-identifying-and-treating-room-modes)

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### DIY Acoustic Panels

#### [Step-by-step Guide to Creating Your Own Acoustic Panels](https://hifi.fan/article/diy-acoustic-panels-a-step-by-step-guide)

Creating acoustic panels at home is not just an affordable solution; it allows for customization to better suit the needs of your space. We'll walk you through the process, including measuring, cutting, and assembly. [continue reading...](https://hifi.fan/article/diy-acoustic-panels-a-step-by-step-guide)

#### Material Choices, Tools Needed, and Safety Precautions

Selecting the right materials is essential. Choices range from rockwool to fiberglass, each with specific acoustic properties. Necessary tools typically include a measuring tape, utility knife, and safety equipment like gloves and masks.

#### Tips for Effective Panel Placement

Placement is crucial for the efficacy of acoustic panels. Focus on early reflection points and areas where sound waves are likely to bounce multiple times.

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### The Utility of Bass Traps

#### The Importance of Low-Frequency Absorption

Low frequencies are often the most problematic in room acoustics. Bass traps can mitigate issues like room modes and standing waves in the lower end of the frequency spectrum.

#### DIY Bass Traps vs. Commercial Options

While commercial options provide ease and certainty, DIY bass traps offer affordability and customization. The trade-off usually comes in the form of time investment and the potential for less-than-optimal performance if not properly constructed.

#### Where to Place Bass Traps for Optimal Performance

Common placements include room corners and wall-ceiling intersections. The aim is to tackle areas where low frequencies are most likely to accumulate.

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### High-Frequency Treatments

#### Dealing with Treble and Upper-Mid Frequencies

Treble frequencies, though less problematic than bass frequencies, still require attention. Issues might include harshness, sibilance, or an overly "bright" sound signature.

#### The Role of Diffusers

Diffusers are useful in treating high-frequency problems by scattering sound waves, thereby reducing echo and reflections. They are especially effective when used in conjunction with absorptive materials.

#### DIY Options for High-Frequency Treatment

Common DIY options include quadratic diffusers or skyline diffusers. These can be made from wood or other rigid materials and are often chosen for their aesthetic as well as acoustic properties.

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### Utilizing Existing Furniture and Household Items

#### How to Use Bookshelves, Sofas, and Curtains for Acoustic Treatment

While not a replacement for specialized acoustic treatments, furniture can still play a role in improving room acoustics. Bookshelves filled with books can act as diffusers, while sofas can provide some level of sound absorption.

#### Pros and Cons of These ‘Quick Fixes’

The advantage of using existing furniture is, of course, cost-saving and convenience. The downside is that such solutions are usually less effective than purpose-designed acoustic treatments.

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### Measuring and Analyzing Room Acoustics

#### Tools and Software for Analyzing Room Acoustics

Analyzing room acoustics often requires both hardware and software. Microphones, SPL meters, and room analysis software can offer a detailed understanding of your room's acoustic properties.

#### How to Perform a 'Clap Test'

The clap test is a rudimentary but effective method to identify echo and reverb issues. A sharp clap can help you listen for flutter echo and other acoustic anomalies.

#### Real-world Case Studies and Before-After Analysis

Reviewing case studies can offer practical insights. We'll examine specific examples to demonstrate how acoustic treatments have remedied real-world problems.

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### Special Considerations for Different Use-Cases

#### Acoustic Treatment for Home Theaters vs. Recording Studios vs. Listening Rooms

Different spaces serve different purposes and therefore have different acoustic needs. A home theater might require soundproofing, while a recording studio might necessitate accurate sound reproduction.

#### How to Adapt Treatments for Multi-Use Spaces

Multi-use spaces pose unique challenges. Flexible acoustic solutions, such as moveable panels and modular bass traps, may offer the adaptability needed for these types of rooms.

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### Budget-Friendly Solutions

#### Affordable Acoustic Treatment Options

Even on a tight budget, basic treatments like DIY panels and judicious furniture arrangement can bring about substantial improvements.

#### The Impact of Room Treatment on a Tight Budget

Budget constraints don't have to stop you from achieving better acoustics. Low-cost solutions can still be effective to a point, although they may require more time and ingenuity.

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### Conclusion

#### Summary of Key Takeaways

By now, you should have a solid understanding of room acoustics, from the fundamental science to practical solutions for a variety of spaces.

#### Next Steps for Implementing Your Room Treatment

With the theoretical knowledge in hand, the next step is to implement these changes in your own space. Consistent measuring and tweaking are crucial for optimal results.

#### Additional Resources for Further Learning

Beyond this guide, numerous textbooks, courses, and online resources can deepen your understanding and skills in room acoustics.

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The Art and Science of Room Acoustics

Discover the keys to perfect sound quality with this complete guide on room acoustics. Covering everything from sound fundamentals and materials to budget-friendly DIY solutions, this article serves as your ultimate roadmap to acoustic mastery, ideal for audiophiles, recording engineers, or anyone who loves great sound.

Velodyne Launches Powerful SPL-X Series Subwoofers with Advanced DSP

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