Here's what babelfish translated..quite a mouthful
Victor AX - Z911
DIGITAL BASIC INTEGRATED AMPLIFIER
XXYEN 89 and 800
The pre- main amplifier where Victor sells in 1987. Victor first D/with A converter built-in amplifier, simple
It was the labored work which throws the amplifier technology and digital technology of the Victor tradition in future design. Especially, the D/A converter
- It was 1 unit which sets forth the feature, A class operation with the signal prediction circuit which is utilized.
As for "digital pure A" and this circuit which is named, when it will be compatible pure A class operation and high power, control of the power circuit
Being something which adds the device only of digital technology, by building in the D/A converter to the amplifier, デジタ
The ル signal being direct input possible, being something which utilizes the merit that memory is produced that digital signal to the storage cell,
It did. The digital signal which is input was distributed by the usual amplifier circuit and the signal prediction circuit, entered into the amplifier circuit
The brief difference, where the digital signal which becomes main instant is remembered in the time based processor, barely 150ms
After eating, it was designed in such a way that it is sent out to the D/A converter. And, already the preceding digital signal of one side
To be sent by the signal prediction circuit, to decide the size of the input signal promptly, simultaneously, main signal level after the D/A converting, ボリ
Analyzing the gain of �…ーム, to form the prediction signal, receiving that prediction signal, idling electric current of the power step change
It had become the mechanism that the power circuit supplies the voltage which it corresponds to the せ and the input signal. Because of this, wastefulness
Among high efficiency to make pure A class operation possible without consuming electric current, in pure A class 120W + 120W (6 Ω)
With the large output which is said was actualized. Furthermore, with usual input, had become A class operation to 20W.
In the D/A converter 16 bit multiple bit type which adopts 4 time over sampling digital filter
It was on-board. The D, by the fact that/A converter it is built in it becomes problem, the audio section of the digital section and the power source section
In order to hold down interference, the seal to do the digital signal processing section with the plate, the large-sized heat sink in boundary every baseplate ア
Separate is done the structure which had been taken the ナログ signal processing unit and the digital signal processing section.
Light 1, to equip the digital input of 3 systems of same axis 2 as the amplifier which can input the digital signal that way, furthermore the circuit
Shortly distance simple conversion of signal route in inside was assured. The speaker terminal is designated simply as 1 system when also
Without drawing around the input signal to the front operation panel, to be able to change, in order, relay and the electronic switch were used.
With this, the digital input time, with DAC direct switch ON, signal route only 0. 5m (the same company, past
Machine 2. 7m), the reduction simple conversion which contact point several 1 (the same company until recently machine 10) with signal routes are thorough actualized. Plate
Remote control operation of the volume operation with the change and electromotive volume of input to become possible, at that time pre- main un
As プ it became unusual remote control equipment. Even at the time of analog input in the baseplate arranging the terminals in shortest distance, the signal
The reduction of route was assured. In addition, it corresponded to also MC cartridge, built in MC head amplifier.
Like above, AX - as for Z911, Victor which it tries probably to utilize the merit of DAC built-in positively as a digital corresponding amplifier
It was the enthusiastic work. Victor it seems, it had the sound of the smooth feeling brightly. And next year, AX - to Z921 モデ
ルチェンジ it was done, this unique design was taken over, being to be strengthened, did.
Below, portion of the catalog of that time is introduced.
--------------------------------------------------------------------------------
Worldwide beginning and signal prediction circuit
Digital pure A loading.
Pure A class 120W + 120W
You can experience
Digital BASIC amplifier
"エスパノーツ" appearance.
It manages digital,
It was thorough pure & simple idea
Digital amplifier of new generation,
It calls エスパノーツ.
Simply the DA converter
It built in just is not.
Freely used digital the signal prediction circuit which
You bear, pure A class 120W + 120W
Like silk smooth sound,
It had the energy of the not yet experience.
* Quality of the digital source is pulled out to full
Digital BASIC amplifier.
* Ideal of amplifier, pure A class operation.
* Digital signal prediction circuit "digital pure A"
It actualized, large output of pure A class 120W + 120W.
* 4 time over sampling digital filter
D of adoption/A converter.
* The D/A separated construction which removes internal interference.
* It is short with distance of optical digital input + signal route
Pursuing pure transmission.
* Operativity and the treble quality which are superior are actualized
Pre- main first remote control equipment.
--------------------------------------------------------------------------------
Victor AX - Z921
DIGITAL BASIC INTEGRATED AMPLIFIER
XXYEN 99 and 800
The pre- main amplifier where Victor sells in 1988. AX which is sold in the preceding year - it strengthened Z911 substantially, was complete
It was the D/A converter built-in type amplifier which has contents. Especially, the D/A converter section focusing on strengthening is assured,
It increased.
As for the largest modification point, input section clogging to immediately before the D of the digital data which is sent from outside/A converter
It was in loading the "K2 interface".At the time of waveform transmission of the digital signal, jitter (the differential time strain) and
Ripple (the waveform distortion) and the like it is made big problem that disturbance noise is added to the ripple mark. "K2 inter-
The face "converting waveform transmission to mark transmission, raises the purity of the signal ripple mark by the fact that it removes just the mark outside component
It was technology. Concretely, detecting just the mark information of the digital input signal with the high-speed switching of the semiconductor,
It creates by doing, the new digital ripple mark on the basis of mark information, in regard to another block, influence of jitter and the like
Without receiving, it was the technology that it is possible to maintain the precision of conversion output high. Because of that, PLL circuit two loading
While to do, the 1stPLL circuit, following to the fluctuation of the input digital signal quickly, timing is caught, the clock data
Sending, furthermore the 2ndPLL circuit, to make the synchronization signal which is stabilized on the basis of this data, as a master clock departure
It had become the mechanism which swing is done. Adjusting to this master clock, to be formed once more, "K2 インターフェー
The ス "empty as for the digital data which is output, the question which becomes the pure signal ripple mark where disturbance noise is excluded as a result
They were う ones.
Also the D/A converter AX - is largely strengthened from those of 16 bit 4 time over sampling type of Z911,
It increased. To adopt those of 8 time over sampling to the digital filter, in the D/A converter, subordinate position
The bit was separated, the superior bit and electric current 18 bits L which are added R independent combination 4DAC was loaded.
"Digital pure A" is taken over as type �U the digital signal which is input enters into the D/A converter, direct
Before, predicting the size of the signal instantaneously, besides the fact that idling electric current it was designed in such a way that it is set to optimum level
Vis-a-vis the analog input signal, way relationship of output current between operating current becomes always optimum, in the optical bias circuit system
It was designed in such a way that it is managed. Also output was raised 130W + 130W (1kHz 6 Ω).
Also the power source section is strengthened, corresponding to the output of 130W, the balance coil, is low core size of impedance structure クラ
It had become ス largest ones. As for this power transformer, in order to hold down the influence with the vibration, in periodic damping quality superior
The れ it is it was mounted in the high rigid plate of dimple structure.
With DAC direct switch ON, signal route only 0. 5m, reduction thin signal route of contact point several 1 is thorough
While taking over pulling conversion, speaker output to become 2 systems of independent 2 relay system, corresponding to also the bi- wiring
It was.
Like above, AX - as for Z921, AX - as the 2nd generation model where improvement is administered to the section on the basis of Z911, this and
Victor it seems, it had smooth sound brightly, it was the capability machine whose cost performance is high.
Below, portion of the catalog of that time is introduced.
--------------------------------------------------------------------------------
You yearn purely.
The sound which does not become dirty is led
We want pure power.
* It reappears to the space and the air impression, K2 interface.
* Resolving power of the level may disappear, was raised,
8fs & full-time 18 bits DAC.
* Takaide power of A class 130W + 130W is borne
Digital pure A type �U.
* Class maximum. The balance coil, it is low impedance structure
Large-sized trance.
* Effective D/in the A separation design, removing internal interference.
* With shortest distance of optical digital input and signal route
Pursuing pure transmission.
--------------------------------------------------------------------------------
- Main specification -
- Overall characteristic -
(CD, LINE1, LINE2 and LINE3 (only Z921), DAT1/TAPE1, DAT2/TAPE2)
AX - Z911 AX - Z921
Rated output 120W + 120W
(6 Ω, 1kHz and distortion factor 0.0007%)
110W + 110W
(6 Ω, 20 - 20, 000Hz and distortion factor 0.0035%) 130W + 130W
(6 Ω, 20 - 20, 000Hz and distortion factor 0.005%)
110W + 110W
(8 Ω, 20 - 20, 000Hz and distortion factor 0.004%)
Total height harmonic wave distortion factor 0.0035% (8 Ω, 20 - 20, at the time of 000Hz and rated output) 0.004% (8 Ω, 20 - 20, at the time of 000Hz and rated output)
Output bandwidth 7 - 60, 000Hz (8 Ω, both ch operation and distortion factor 0.02%) 5 - 100, 000Hz (8 Ω, both ch operation and distortion factor 0.1%)
Frequency characteristic DC - 200, 000Hz (+ 0 dB, - 3 dB) 5 - 100, 000Hz (+ 1 dB, - 3 dB)
Damping factor 200 (1kHz, 8 Ω) <-
Input sensitivity/impedance
(1kHz) 400mV/30k Ω 300mV/30k Ω
Signal-noise ratio 86 dB (EIAJ), 112 dB (IHF short circuit) 83 dB (EIAJ), 113 dB (IHF short circuit)
Bus control 0 - + 5 dB
(50Hz and MASTER LEVEL - 30 dB) <-
フォノ RIAA deviation ± 0.2 dB (20 - 20, 000Hz, MM and MC) <-
- D/A converter -
Corresponding sampling frequency 32KHz, 44. 1kHz and 48kHz (automatic operation change) <-
Total height harmonic wave distortion factor 0.0035% (1kHz and EIAJ) <-
Signal-noise ratio 102 dB (EIAJ) 107 dB (EIAJ)
Dynamic range 97 dB (EIAJ) 98 dB (EIAJ)
Input DIGITAL1 (optical) - 23 - - 14 dB m
DIGITAL2 (コアキシャル) 0. 5V p-p/75 Ω
DAT PLAY (コアキシャル) 0. 5V p-p/75 Ω <-
Output DAT REC (コアキシャル) 0. 5V p-p/75 Ω
- Power source in addition -
Power supply voltage AC100V (50, 60Hz common use) <-
Electric power consumption 200W (electric supplies control method standard) 225W (electric supplies control method standard)
Power source electrical outlet Power switch non-linkage 1 (maximum 200W) Power switch non-linkage 2 (maximum 200W)
Maximum external size 435W × 166H × 442D mm 435W × 173H × 459D mm
Weight 19. 0kg 18 0kg
Accessory Remote control transmitter (RA - SA911) 1 Remote control transmitter (RA - SA921) 1
* AX which is published to this page - Z911 and AX - as for the photograph and the specification chart etc. of Z921 1987 December,
Being something which is excerpted from the catalog of 1988 November Victor, at the Nippon Victor corporation
There is a copyright. Therefore, these photographs and the like with no permission reprinting quotation and the like as for doing
Being to be prohibited with law, please note.