Bass reinforcement | Avalon Acoustics Sentinel guide

10.4 Bass reinforcement

By bass reinforcement, we mean the effect of the room boundaries on the propagation of sound. It is widely known that speaker placement relative to the floor and walls can affect the relative amount of bass that the system produces.

To make this interaction more clear, let us refer to the optical analogy of the candle. Similar to the way that the mirror reflected the light of the candle, so can the surfaces near the loudspeaker reflect the sound waves back into the listening room. When the wavelength of the sound is large compared to the distance to the boundary, the reflected wave is substantially in-phase with the original wave. When this condition is met, the coupling coefficient between the speaker diaphragm and the air increases, and the speaker efficiency increases. This changes the actual frequency response of the speaker, and is not attributable to standing waves or other room resonances.

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Avalon Acoustics Sentinel manual Bass reinforcement

Sentinel specifications

Avalon Acoustics Sentinel represents a pinnacle in high-fidelity loudspeakers, designed for audiophiles who demand exceptional sound quality and elegant design. Known for their commitment to meticulous craftsmanship and innovative technology, Avalon Acoustics continues to push the boundaries of acoustic performance with the Sentinel model.

One of the standout features of the Sentinel is its unique three-way design. This configuration allows for precise sound reproduction across the entire audio spectrum, delivering rich bass, articulate midrange, and sparkling highs. The speaker utilizes proprietary drivers that have been engineered to minimize distortion while maximizing dynamic range and sensitivity. This ensures that every note is rendered with clarity and precision, making it ideal for any listening environment.

The cabinet design of the Sentinel is another aspect that underscores Avalon's commitment to excellence. Constructed from carefully selected hardwoods and finished to perfection, the enclosure not only enhances aesthetic appeal but also plays a critical role in acoustic performance. Its solid build effectively reduces resonance and undesirable vibrations, allowing the drivers to perform at their best.

In terms of technology, the Sentinel incorporates advanced crossover networks. These networks are designed to ensure seamless transition between drivers, providing a cohesive soundstage. By using high-quality components, the crossover systems significantly improve the overall performance, ensuring that listeners enjoy a balanced and natural tonal quality.

Moreover, the Sentinel features adjustable bass ports, allowing users to tailor the speaker's performance to fit their specific room acoustics. This flexibility helps to optimize the listening experience, regardless of the environment. The speakers also include easy-to-use bi-wiring and bi-amping capabilities, enabling audiophiles to customize their setup for optimal sound quality.

Finally, the visual appeal of Avalon Acoustics Sentinel cannot be understated. With its sleek lines and contemporary design, it is a statement piece that complements any décor. Available in various finishes, the Sentinel seamlessly blends performance with style, catering to both auditory and aesthetic sensibilities.

In summary, Avalon Acoustics Sentinel stands out as an exceptional loudspeaker that combines advanced technology, exquisite craftsmanship, and customizable features. Its three-way design, high-quality drivers, and adjustable features make it a top contender for those seeking unparalleled sound quality in a luxurious package.

Contents

Musical Masterpieces Page Table of Contents Introduction Listening Position Overview Introduction Low Noise Floor Coherent Energy Transfer Active Reference System Unpacking Instructions ContentsIntroduction Room Preparation and Verification Room set-up for unpacking Crate and Box Placement for Unpacking To unpack the crossover cabinets Opening the Crates To unpack the upper speaker cabinets Opening the Sub Amplifier Crates Preparation System Set-upRemoving Apex‘ Couplers from Set-up Blocks Left / Right Channel Matching Lower Speaker Cabinet Set-up Installation of Apex‘ couplers Upper Speaker Cabinet Set-up Page Page Crossover Cabinet Set-up Proper placement of crossover cabinet behind speaker Orientation of the upper Felt Mask Felt Anti-Diffraction Mask Sub Amplifier Set-up Do not over-tighten the screws Wiring Instructions Inductive field effects Wiring and Field Interactions Do not over-tighten the binding posts Connecting Upper Speaker Cabinet to Crossover Connecting Speaker Cable to the Crossover Connect Speaker Cable to your Amplifier Connecting Subwoofer to the Sub Amplifier Interconnect Y-cable at the preamplifier Connecting Preamplifier to the AmplifiersTwo outputs at the preamplifier Break-in Period Design Principle Subwoofer AmplifierRoom Compensation Master Separate Left / Right Amplifiers Maximizing PerformanceFelt Anti-diffraction Masks Toe-In Room Treatment and System / Listener PositionApex‘ Couplers Corner Treatment First Reflection Points Cabinet Care of Your Avalon LoudspeakersCrossover Cabinet Drivers Event of a Problem Warranty Warranty Statement Page Room Acoustics / Speaker Position Basic Room Acoustics An Optical Analogy Standing Waves Flutter Echo Early Reflections Avoiding Early Reflections Angle Angle Y Reflected Sound Direct Sound Low Frequency Reflections Bass reinforcement 100 200 500 Page Flutter Echo and Standing Waves Summary of Recommendations Early Reflections Speaker Placement Listening Room Example Path Length Symmetry Listening PositionTime Alignment Summary Accuracy of Bass Reproduction Fast Bass Sensitivity to Time-Related Information Correlation with Amplifier Measurements Measurements of Audio Equipment Loudspeaker Measurements Designing for Accurate Bass Reproduction Frequency Response Effects Listening QualitiesListening for Size Distortions Transient Response Effects Anechoic Frequency Response vs. In-Room Frequency Response Active Subwoofer SystemActive Control of Bass Energy Features Loudspeaker SpecificationsSubwoofer Amplifier