DSP-AX640SE

NEW PRODUCT BULLETIN

heavy chassis which is also designed for maximum vibration damping.

Anti-Resonance Aluminium-Extruded Heat Sink

The large, anti-resonance, aluminium- extruded heat sink is located on the base frame with the power amplifier circuit boards to prevent interference with the preamplifier and digital processing sections. The power block is equipped with a fan, but it is only used for extreme heat build-up and is not activated during normal operation, preventing the occurrence of even the slightest unwanted noise.

Wide-Range Frequency Response for DVD-Audio and SACD

With an extremely wide frequency range of 10 to 100,000Hz, this amplifier is capable of delivering the full potential of the new digital audio sources DVD-Audio and SACD.

Optimum Space Utilization

vExtra-Large Custom-Made Block Electrolytic Capacitors

Developed specifically for the DSP- AX640SE, the 12,000µF/71V block electrolytic capacitors use low- magnification foil and are exceptionally high quality.

vDirect Signal Path Speaker Relays with Gold-Plated Crossover Connection and Shielding

Speaker switching is accomplished by relays right in front of the speaker terminals, rather than at the switch position. This results in a shorter signal path and minimum output impedance.

vHigh Performance Myca Capacitors and Film Capacitors

At this level of sound quality, even these small parts make a difference. The high precision FE mica and metallic mylar film capacitors use polypropylene material and are the highest performance types on the market.

DSP-AX640SE High Quality Parts

vExtra-Large Low-Impedance Transformer The large 4.8 kg low-impedance transformer is an important factor in the DSP-AX640SE’s extremely stable power supply.

vThick PC Board Wiring with 1.6mmφ Copper Jumper Cables

The audio signal is routed within the amplifier through exceptionally thick, top quality wire, ensuring that signal purity is maintained.

The use of highly integrated LSIs allows an interior design that maximizes power and sound quality by positioning all the digital processors and related circuitry in one small area. This leaves most of the space open for the power amplifier components: transformers, capacitors, heat sink and so on. This means that these parts can be much larger than usual for greater power, that they can be separated for minimum chance of interference, and that circuits can be arranged in straight lines for maximum signal purity. For example, the tone control circuit layout is straighter and shorter than ever.

Finest Parts Used Throughout

In order to realize the goals of massive power and superlative sound quality, Yamaha technicians completely reevaluated all the parts used in previous amplifiers. As a result, many were replaced with more expensive or custom- designed units.

DSP-AX640SE Interior View and Signal Flow (

 

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5/10 (G/B)