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发表于 2012-3-12 17:03
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本帖最后由 叶荣玉 于 2012-3-13 14:15 编辑
{:soso_e128:} 
The digital input/output carries two optical inputs and one optical power.
When an optical fiber is bent or it vibrates, in order to prevent the width of a pulse changing and pulse width distortion arising, an optical-transmission distorted corrective network is carried in each by the side of an input and an output, and the noise is stopped low.
In the DAC section, while losing the phase difference by carrying a digital analog converter in each L/R, the separation is improving by separating L/R.
Very few Glitch Les ICs of the glitch occurrence specially developed to this digital analog converter are adopted, the analog switch called a deglitcher by this can be deleted, and the performance and the tone quality are improved.
Furthermore, the MSB error corrective network was added to each IC, and the linearity in a zero cross point is improved sharply.
Moreover, in order to adopt PLL with the very high Jitter suppression effect as PLL which generates a clock in order to prevent the tone-quality failure by a Jitter (shake of the edge of a clock) and also to avoid the influence of an oscillation, bonding of the oscillator circuit is carried out by the special resin.
The clock at the time of a digital-analog-converter operation is used as one master clock, loses the asynchronous clocks (microcomputer clock etc.) currently otherwise oscillated, and is suppressing the occurrence of the unnecessary beat component.
By carrying out oversampling 4 times, the digital filter made the unnecessary high region component the high band, and has banished the Loopback noise.
Moreover, highly efficient IC is adopted as a digital filter, and less than 0.0001dB and the bads in an inband ripple±attenuation of 100dB are attained.
In the low pass filter, the 5th Bata Wace type low pass filter which was excellent in the phase response is constituted from a FDNR discrete circuit, and while considering it as a more gently-sloping property, phase distortion is decreased.
Furthermore, thorough high-quality sound-ization, such as a high-quality sound part and a grounding using the oxygen-free-high-conductivity-copper version busbar, is attained.
The digital recording selector which can record to DAT the digital source different from the sound currently taken out from the speaker with a digital signal is carried. (It is possible for this functionality only at the time of analog source viewing and listening)
Analog parts, such as digital circuits, such as a data demodulation, PLL, and a digital filter, a digital analog converter, an analog low pass filter, are separated by another substrate, and also the digital part is shielded.
Moreover, the stonewalling to the analog system which causes a tone-quality failure by separating power sources, such as a digital circuit and a microcomputer, and the power source of an analog system from a transformer is prevented.
The direct construction which attained shortest-izing of a signal path and proper placement-ization is adopted.
First, the digital part and the analog part were separated and the signal path after becoming an analog signal is shortest-ized like other analog sources. Moreover, a failure and interference of the signal inside are prevented by making each input block separate, respectively and shielding-izing an I/O block.
Moreover, in input block, the input & recording selector was made into the structure which can operate a main volume by remote control mechanically electrically, and shortest-ization of a signal path is attained. If a source direct switchpoint is turned ON, the input sources other than Adapt/Tape2 termination go into a main volume directly, and can enjoy a purer sound.
And a power amplifier block is arranged along with the fluence of a signal, and leads the output of the power stage to a speaker selector straight. The product-line distance from a power-source part is made to shortest-ize also here.
In the speaker selector block, since priority is given to Termination A while attaining direct installment and shortest-ization for a termination to the substrate which attached the relay, contrary to the conventional termination location, A termination is arranged downward.
In order to put into practice and suppress an oscillation, honeycomb form original with frame chassis is adopted.
It is in a bottom plate and a bonnet case about the honeycomb according the honeycomb according to a stops in order to prevent an oscillation and vibration of a power transformer to punching to a transformer frame and a frame chassis. Moreover, in order to suppress an oscillation and vibration of a power transistor effectively and to hold down an extraneous vibration for the extrusion honeycomb of chimney type aluminum to a heat sink, the large-sized honeycomb insulator by resin shaping is employed full time four times. Furthermore, in order to support a massive transformer, the insulator of five flat knots made of cast iron is also adopted.
Moreover, cast iron was adopted as the transformer case, while being filled up with the thermally conductive good pitch material between the cast iron case and the main unit of a transformer, the radiation fin was prepared, and the incrementation in the internal resistance of the transformer coil by a temperature rise is prevented.
Furthermore, it was hard to cause electromagnetic induction and the mass newly developed seal dead capacitor which is hard to receive is adopted.
And in the volume, the way of maintaining the weight balance of bothways focusing on the bearing of a rotary knob is adopted,In order to keep a mechanical stress from starting a volume main unit entirely and to suppress the influence of an oscillation of amplifier to a min, the floating of the shielding cover supporting a volume substrate is carried out from a body section with a special paper, and a 2-4kHz harmful vibration is absorbed.
Switching distortion has adopted the non switching circuit TypeIII which is not generated theoretically.
While stabilizing the idle current which is carrying out the drift and suppressing an occurrence of thermal distortion by transition of outside temperature etc. immediately after power-switch ON and at the time of the Taishin number input, the voltage amplification stage and the power amplification stage are separated clearly, and the speaker drive capacity at the time of a low load intensity is heightened.
The newly developed seal dead capacitor which connected the aluminum case with the cathode of the aluminum electrolytic capacitor more certainly is adopted, and the capacitor element is shielded powerfully.
Running out of the noise from the diving and the capacitor itself of a noise was lost by this, and high S/N is realized.
When not hearing a record, a circuitry serves as OFF automatically, and a Phono equalizer part prevents an unnecessary noise occurrence, and contributes to the improvement in a tone quality of other sources.
Moreover, the ON/OFF functionality is also given to the recording selector, only when the TONE direct switchpoint ON is used, it operates, and a clock stops after that.
The high Brit MC transformer scheme is adopted as the circuitry of a Phono equalizer.
The plating of copper is adopted as a rear panel, a bottom plate, a transformer frame, and a speaker terminal block shielding case in order to aim at a reduction of distorted banishment of an electromagnetic, and an oscillation.
The OFC polarity attached-indicator very-thick power cord is adopted.
Moreover, it is a fuse for audios, and aluminum Naked shaving, and quality parts, such as a large-sized terminal a thing rotary knob, a gilding input/output terminal, and vice type, are thrown in.
| Form | An Integrated Amplifier with a built-in digital analog converter | | Amplifier part | | Output power (both channel drive, 20Hz - 20kHz) | 180W+180W (4 ohm, 0.005%)
150W+150W (6 ohm, 0.003%)
120W+120W (8 ohm, 0.003%) | | Dynamic power | 400W+400W (2ohm)
280W+280W (4ohm)
160W+160W (8ohm) | | THD (20Hz - 20kHz) | 0.003% (8ohms) | | Input sensitivity/impedance | Phono man month: 2.5mV / 50kohm
Phono MC: 0.25mV/40 ohms
compact disk, Tuner, Line, Tape:150mV /, 50kohm | | Maximum permissible input (1kHz, 0.008%) | Phono MM:200mV
Phono MC:20mV | | An Output voltage/impedance | Tape Rec, Rec Out:150mV /, 0.8kohm | | Frequency characteristic | Phono man month: 20Hz-20kHz±0.2dB
Phono MC: 20Hz-20kHz±0.3dB
compact disk and Tuner:1Hz-200kHz+0 -3 dB | | Tone control (Volume-40dB) | Bass: 100Hz, ±8dB
Treble: 10kHz, ±8dB | | size=-1]Subsonic Filter | 7Hz, 6dB / oct | | Loudness contour (Volume-40dB) | 100Hz : 5dB, 10kHz : 3dB | | S/N ratio (IHF, A network, a short circuit) | Phono man month: 95dB (5mV o'clock)
Phono MC: 83dB (0.5mV o'clock)
compact disk, Tuner, Line, DAT/Tape1, 2:110dB | | Synthesis | | Supply voltage | AC100V, 50Hz/60Hz | | AC outlet | Power-switch interlock: Two lines (200W)
Power-switch un-interlocking.: One line (100W) | | Power consumption (Electrical Appliance and Material Control Law) | 365W | | Dimensions | Width 457x height 173x depth of 475mm | | Weight | 29.3kg |
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人老是自然规律。等那些老的烧友仙去，你也会变老了的。当你老了的时候你会知道，在对声音的整体领会中，並不是能听到更高频率，就等于会听音乐。总不会认为儿童比你更会理解音乐吧？而且这样不着边际的比较，什么也说明不了吗，这就像说调查过某二个收入相差几十倍的人，证明收入
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发表于 2012-3-12 16:56
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