THE DAC/PREAMPLIFIER UNIT

ULTRA-HIGH-RESOLUTION 24-BIT D/A CONVERTERS
The MB-100 incorporates a sophisticated, high-precision 24-bit DAC that ensures the most accurate conversion of the CD's 16-bit digital audio data. The resolution is enhanced for critical low-level signals, ensuring faithful reproduction of the finest musical nuances with an almost palpable, realistic, three-dimensional sound field. Instrumental harmonics are accurately recreated thanks to an advanced 3rd-order Bessel-type analog filter following the D/A conversion stage. The result is rich, natural-sounding music reproduction that transcends the limitations of conventional automotive audio source components

INNOVATIVE ACOUSTIC RESPONSE COMPENSATOR
Mobile music reproduction is marred by resonant peaks that are exited by the size, shape, and structural materials unique to car interiors. They make it impossible to achieve uniform frequency response, making the music sound unnatural and tiring. Midrange resonances and standing waves related to the dimensions of a car's interior are particularly disturbing and difficult to tame. Many car speakers exacerbate the problem with their own resonant behavior. Typical equalizers, because of their generalized nature, cannot offer a comprehensive solution.

Nakamichi engineers attacked the problem by first analyzing a tremendous volume of data, accumulated over many years of Mobile Sound product development. By identifying patterns in automotive interior acoustics, Nakamichi has developed a new technology for combating harmful resonances. The Acoustic Response Compensator, incorporated for the first time in the MB-100, effectively controls peaks in two critical low-to-mid frequency bands. You can select varying degrees of compensation in the 100 to 160 Hz range and the 1 to 1.6kHz range. A CD with special test signals is supplied to facilitate the one-time calibration. Fine-tuning the system with the Acoustic Response Compensator in this manner results in dramatic sonic improvement. Music is reproduced with unprecedented clarity and smoothness that invites extended listening.

NON-MAGNETIC ALUMINUM CHASSIS
Conventional steel chassis, while providing a shielding effect, can themselves become a source of electromagnetic radiation. Sensitive circuits are affected by such emissions, resulting in distortions and musical coloration. The MB-100 employs a non-magnetic aluminum housing for the DAC/preamplifier unit. Critical low-level circuits are thus effectively shielded from high-frequency digital electromagnetic interference via the chassis. Delicate musical signals are unharmed and reproduced transparently.

HIGH-PERFORMANCE DC-DC CONVERTER
A clean, abundant power supply is the foundation upon which high-quality amplifying circuits are built. The MB-100 employs a high-capacity bipolar DC-DC converter with an advanced design that absolutely minimizes the use of sound-degrading coupling capacitors. This assures an ample source of clean power, enabling the MB-100's preamplifier circuits to handle the most demanding musical peaks with ease. Music is reproduced with unequaled dynamic clarity and power.

SELECTABLE HIGH-VOLTAGE PREAMPLIFIER OUTPUT
The MB-100 delivers a high-voltage preamplifier output that ensures the cleanest signal transfer to the power amplifiers. By reducing voltage amplification requirements at the power amplifiers, the signal-to-noise ratio is improved and distortion reduced. Furthermore, you can select a 1V, 2V, or 5V nominal output for optimum sensitivity matching with the power amplifiers in your system.

 


 

THE TUNER/CD CHANGER TRANSPORT UNIT

THE LATEST-GENERATION NAKAMICHI MUSICBANK™ MECHANISM

• VARIABLE PITCH STOCKER MECHANISM: Conventional changer designs, using uniform slot spacing, are not space-efficient. Nakamichi's ingenious solution controls the storage slots with specially designed guide screws that have grooves with varying pitch. The non-playing discs are held tightly together (short of actual contact) whether above or below the playing disc. this makes it possible to accommodate six CDs plus the optical pickup system in a single-DIN chassis.

• MAGNETIC DISC CLAMPING: Most car CD player disc clamps permit harmful chassis vibrations to be transmitted to the disc. The MB-100 employs a novel Magnetic Clamping Chuck that operates on the same principle as Nakamichi's high-performance home CD players. Because this clamping system has no direct contact with the chassis, the disc is effectively isolated from external vibrations, assuring precise, pure signal readout.

• SUPERIOR OPERATING EASE AND CD PROTECTION: Nakamichi's refined Direct Loading Mechanism ensures convenient, reliable operation without magazines or trays, providing the smooth, high-quality "feel" associated with the finest single-disc CD players. Moreover, the mechanism handles discs only by their edges, so your CDs are protected from damage.

3-D VISCOUS SUSPENSION / ANTI-ROLL SUSPENSION
A sophisticated 3-D Viscous Suspension provides extremely effective vibration absorption in all directions. It prevents degradation of sound quality and virtually eliminates skipping and muting. Also, an advanced Anti-Roll Suspension system permits the head unit to be mounted at angles of up to 30 degrees from horizontal without any cumbersome adjustments.

ULTRA-MINIATURE HIGH-PERFORMANCE PICKUP ASSEMBLY
The optical pickup actuator employs a torsion spring rather than the typical friction method. This enables a high degree of miniaturization while simultaneously decreasing susceptibility to performance-degrading acoustic vibrations. An advanced single-beam pickup with digital servo automatically controls servo gain for each individual disc to ensure optimum signal readout accuracy and superior playback compatibility.


(For European & Asian Model)