Avalon Acoustics Sentinel Room Treatment and System / Listener Position, Toe-In, Apex‘ Couplers

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Room Treatment and System / Listener Position

Selecting the proper room and listener positions within your listening environment can dramatically improve system performance. The following points highlight the fundamental concepts in room treatment and positioning from the in-depth discussions in Chapter 9, Room Acoustics and Speaker Position (beginning on page 41) and in Chapter 10, Listener Position (page 55):

•Left to right room symmetry aids in producing a balanced sound stage.

•Image depth is enhanced when the distance to the rear wall is increased. This is normally easier to accomplish when the speakers are placed along the short wall of the listening room.

•The side wall and inter-speaker distances can be calculated using the 4 : 10 : 4 ratio.

•The most even bass response will be attained when the distances to the side and rear walls are not overly similar.

•A comfortable, centered listening position at a minimum distance of three meters from the system allows proper wave front convergence.

Toe-In

The exemplary horizontal polar response of the Sentinel Active Reference System makes large amounts of toe-in unnecessary. The optimum toe-in position is between two and three degrees. In situations where strong reflections from the side walls are a problem, pointing the speakers inward up to a maximum of five degrees can be helpful.

Apex‘ Couplers

Supplied with your Avalon Acoustics loudspeakers are twenty Apex‘ couplers, used to couple the speaker and crossover cabinets to the floor, thereby minimizing time-smearing resonance effects. The result is an increase in focus and solidity of the sonic images.

On hardwood floors, use a large coin, such as a quarter, to protect the floor from the pointed spike.

Refer to the set-up procedure in Chapter 3, System Set-up (beginning on page 15) for details of Apex‘ coupler installation.

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Contents Musical Masterpieces Page Table of Contents Introduction Listening Position Overview IntroductionLow Noise Floor Coherent Energy Transfer Active Reference System Introduction ContentsUnpacking Instructions Room Preparation and Verification Room set-up for unpacking Crate and Box Placement for UnpackingTo unpack the crossover cabinets Opening the CratesTo unpack the upper speaker cabinets Opening the Sub Amplifier Crates Removing Apex‘ Couplers from Set-up Blocks System Set-upPreparation Left / Right Channel Matching Lower Speaker Cabinet Set-up Installation of Apex‘ couplersUpper Speaker Cabinet Set-up Page Page Crossover Cabinet Set-up Proper placement of crossover cabinet behind speakerOrientation of the upper Felt Mask Felt Anti-Diffraction MaskSub Amplifier Set-up Do not over-tighten the screws Wiring InstructionsInductive field effects Wiring and Field InteractionsDo not over-tighten the binding posts Connecting Upper Speaker Cabinet to CrossoverConnecting Speaker Cable to the Crossover Connect Speaker Cable to your Amplifier Connecting Subwoofer to the Sub Amplifier Two outputs at the preamplifier Connecting Preamplifier to the AmplifiersInterconnect Y-cable at the preamplifier Break-in Period Room Compensation Subwoofer AmplifierDesign Principle Master Felt Anti-diffraction Masks Maximizing PerformanceSeparate Left / Right Amplifiers Apex‘ Couplers Room Treatment and System / Listener PositionToe-In Corner Treatment First Reflection PointsDrivers Care of Your Avalon LoudspeakersCabinet Crossover CabinetEvent of a Problem WarrantyWarranty Statement Page Room Acoustics / Speaker Position Basic Room Acoustics An Optical AnalogyStanding 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 RecommendationsEarly Reflections Speaker PlacementListening Room Example Time Alignment Listening PositionPath Length Symmetry Summary Accuracy of Bass Reproduction Fast Bass Sensitivity to Time-Related InformationCorrelation with Amplifier Measurements Measurements of Audio EquipmentLoudspeaker Measurements Designing for Accurate Bass Reproduction Listening for Size Distortions Listening QualitiesFrequency Response Effects Transient Response Effects Active Control of Bass Energy Active Subwoofer SystemAnechoic Frequency Response vs. In-Room Frequency Response Features Subwoofer Amplifier SpecificationsLoudspeaker

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.
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