Sounds That Express the Performer's Feelings
The Panasonic Aim for Sound
We were aiming for a neutral sound quality. High-res sound sources contain from 3 to 8 times the data of a CD.
To reproduce them the diaphragm has to be vibrated precisely, and unnecessary vibrations have to be cut.
Key Sound Quality Technologies
Good headphone sound requires precise air vibration and no unnecessary vibrations. We developed the driver unit and driver frame to achieve this. Hardness and lightness are needed to precisely vibrate the diaphragm. The diaphragm material also affects sound quality, so we tested many different materials.
We decided on a Multi Layer Film (MLF) for the HD10 diaphragm.
The MLF does not have strong acoustic traits, and produces minimal reverberation, for live performance sounds.An Anti Vibration Frame supports the new driver unit. A zero-base concept reduces vibrations. We also teamed up with a resin manufacturer to develop a new poly-lactic acid resin. Then we positioned frame ribs at unequal intervals to further suppress vibration.
We worked to raise the HD5 sound quality while keeping the price down. The HD5 diaphragm is 40 mm, but to attain a frequency band of 4 Hz to 40 kHz, we used the Anti-Vibration Frame and three sound ports. A sound-absorbing material was applied to suppress vibrations and noise. This gave us ideal sound quality for high-res sound reproduction.
Finishing Touches for Desired Sound
Acoustic tuning consisted of repeated adjustments and listening sessions, including opinions from musicians.
Closing Comments to Audio Fans
In addition to high-res sound, users can enjoy their CDs and MP3s with these new headphones. The HD Series gives you a whole new world of musical enjoyment.