The Sound Quality Guarantee Program committed to providing post-installation satisfaction.

    The “good sound” standard formerly trusted to individual experience and intuition. For custom installations, Bewith has achieved impressive results with its proprietary sound guarantee initiative through use of a sound quality assurance program based on the SIEG® in-vehicle acoustic measurement system. We are committed to demonstrating “good sound” as a universal value.

    We don't just sweep your dissatisfaction with sound under the rug as “personal preferences.”

    Suppose you are not persuaded that the sound of your installed car audio meets your expectations. What do you first suspect? That the sound of your chosen components does not agree with your tastes? Or that your wishes were not accurately conveyed to the dealer? This is generally not a problem of personal preferences, but rather the cause is lack of proper installation and tuning by the dealer. At Bewith, we make the “good sound” standard formerly entrusted to individual experience and intuition now technically possible through use of a proprietary sound quality guarantee program based on the SIEG® in-vehicle acoustic measurement system. On a platform of solid fundamentals backed by proper acoustic theory, Bewith partners with distributors who endorse our purpose of creating sound, to provide a unique sound that reflects our customers’ likes to the greatest extent. Bewith, together with SIEG® equipment vendors, is resolved to refute the mood in the car audio world to sweep customer dissatisfaction under the rug as “personal preferences” through a commitment to present “good sound” as a universal value.

    Analytical ability that can grasp speaker properties in their installed condition.

    SIEG®is Bewith’s original in-vehicle acoustic measurement system for use by exclusive sales outlets to verify and analyze whether speakers and other car audio components are properly installed and whether the sound tuning by digital processor has been properly performed. Sound creation with SIEG® uses important features not found in common audio analyzers. One such feature is the ability to analyze characteristics of the speaker units (such as impedance and other characteristics in the speaker enclosure) in their installed conditions. This allows identification of the individual causes of sound distortion for each unit, providing the ability to harness the power of enclosure design and vibration control.

    Creating appealing sounds that do not rely on digital tuning above the norm.

    When creating sound with common audio analyzers, the sound quality of an already installed system is frequently corrected afterwards by electronic tuning with a digital processor. But sound creation with SIEG® allows you to solve problems ahead of time by resolving them during installation to increase system sound quality from the source. Because points needing correction and points not needing correction can be clearly identified through tuning by a digital processor, there is no need for additional digital tuning, thereby enabling the creation of appealing sound that makes optimum use of the individual components and the individual characteristics of the cabin space.

    Sharing data in order to more effectively achieve optimum sound.

    Another major feature of sound creation with SIEG® is that we have implemented a system for sharing installation data according to vehicle type from past installations done by Bewith and SIEG® equipment vendors. Bewith makes proactive use of this data in its training of SIEG® equipment vendors, including training on installation techniques, acoustic theory classes, product seminars, trial listening events and sound contests, in addition to data from new product development and product enhancements. We have already achieved significant results with this system.

    [ Sample measurements by SIEG (in-vehicle acoustic measurement system) ]

    Impedance measurement (free-standing)

    Measures the impedance of a free-standing speaker unit before installation. Assists in installation by providing the unit’s basic characteristics.

    Impedance measurement (after installation)

    Re-measures impedance of a speaker installed in the vehicle. Performs an objective, data-centric check of whether the speaker is operating properly.

    FFT measurement

    Sample measurement of in-vehicle frequency response of a complete system. Checks the low-to-high range balance as a basis for HiFi reproduction.

    Transmission frequency response measurement

    Sample measurement of in-vehicle phase properties and transmission time (time alignment). Useful for faithful reproduction with a sense of orientation and acoustic field.

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