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“If a vehicle interior is filled with true instrument sounds, it must be fascinating.” This motivation has been driving the development of our technologies.

Speaker system

Speaker’s movement is especially focused.

The back-and-forth strokes are designed to be symmetrical,

suppressing undesirable distortion and

beautifully representing harmonic overtone of musical instruments.

The frequency range is designed much more deeply. Driving force is also strengthened by using strong magnetic circuit and multiple coils. These efforts ensure clearer fundamental tones of basses and reproducing the dynamics.

Woofer

Bass pitch for stability and dynamics of music

DETAIL

Dedicated design for wider coverage of voice frequencies produces emerging voice with reality.

Squawker

Real and expressive voice in pursuit

DETAIL

Light-weight materials are carefully chosen: silk for the diaphragm and CCAW for the coil. Pursuit for better response to sound of every part emphasizes exquisite sound of acoustic musical instruments.

Tweeter

Vivid and energetic treble to decorate music

DETAIL

A high-strength material resistant to giant oscillation is selected for the diaphragm, which pushes mass of air to reproduce vast resonance of pipe organ: one of musical instruments with lowest bass.

Subwoofer

Magnificent vibrancy achieved by tough structure

DETAIL

Signal processing

Dedicated equalizing solution for unique and

complicated acoustics in a vehicle is applied

for all the passengers to enjoy music.

YMU837In-house designed DSP

An unique processor that can compute with less computational errors for pure sound

In general, small computational errors are accumulated by processor operations, which causes indistinct sound. Yamaha’s original architecture implemented into YMU837 resolves this problem and offers equalizer lineup that works with sound kept pure.

PhitunePhase equalizer

Professional tool to manipulate sound at will

Unlike headphones, sound from speakers installed in a car does not reach ears directly but reflects over and over. To equalize phase misalignment caused by repeated reflection, phase equalizer has been newly developed. This is a specialist tool to equalize not only sound pressure but also its phase.

Tuning engineers for automotive sound

Rich sound led by honed musical sensibilities

Specialized engineers are required to handle the tools developed specifically for vehicle acoustics. They have been exploring different approaches to achieve superior performance.

Power amplifier

Know-how fostered by HiFi amplifier development is

used for designing profluent current flow

to drive the speakers.

Component selection

Consideration of every component’s role for sound quality in addition to its circuitry behavior

Capacitors, the sources for supplying current instantaneously, build basis of sound reproduction. Sound quality evaluations on capacitors from various suppliers are conducted repeatedly to deliver both of drivability and controllability of low-frequency sound.

Layout design

Ideal 0Ω wiring continuously challenged in pursuit of ultimate reality

Clear and bold sound is realized by the design concept “lower impedance” in detail that the power and the ground lines are optimized for the shortest distance and the digital part and the analog part are separated to suppress noise.