Audio Database

The pictorial image of AU-X111MOS VINTAGE

330,000yen(1985 release)

The Integrated Amplifier developed by the selection of the component partses which do not allow compromise, and an enhancement and a listening comprehension test based on a circuitry technology till then and know-how.

Supplying the know-how cultivated in the it1 in which the separate amplifier C-2301 and B-2301L are developed, it is coped with by the thorough vibration proof design, a deadning, and electromagnetic waves flying, and the development of a custom-made maid part and the part with a track record are adopted also about the selection of a stream-composition part.

MOS FET is adopted as a power element and a total of 16 pieces are used for right and left of the power stage, and ± four places by every four parallel push pulls each. Low-impedance drive capacity is strengthened by this, and the high drive of stability has been performed.
Moreover, cancellation is carried out by the balance transmit and the amplification in the hum or the noise component, and also since it dissociates from - side, a grounding is not influenced by a grounding. For this reason, to the noise stonewalling and hum which are mixed from the outside, it is strong and the SN ratio and transparent feeling on Hearing impression are improving.

In order to cope with AC line currently polluted with the clock pulse and phase control noise of home electronics or a microcomputer, the power circuit has balance power-source composition made into the closed loop unrelated to a grounding-ized color like the amplifying circuit.

In order to correspond also to visual equipment, the input terminal for images is carried.
In order to prevent the RF component of a picture signal having an ill effect on a tone quality, a picture signal does not perform any product-line leading about in a chassis,It is processing with IC switchpoint at the pin-jack backplane of a rear panel, and, also physically and electrically, the power source for IC is also carrying out thorough exclusion, such as supplying electric power from a transformer different from an audio system.
Furthermore, the property of the IC switchpoint itself was also considered as 10MHz of passband type, and the image quality failure is prevented.

The thorough twin monophonic construction of the like which can be referred to as having carried two sets of monophonic amplifier is adopted, and it is collecting small and highly efficiently.

The power direct functionality is carried, in the case of ON of this functionality, shut-off of all the operations of a pre part or a control part is carried out, and the signal from an input terminal for exclusive use is amplified purely.
Moreover, the exclusive volume of a right-and-left independency is carried so that a volume coordination can be performed also in this case.

In order to improve an operation feeling, the shower light which illuminates the thumb of a clever switchpoint it1 and aluminum Naked shaving 出し, the side panel of aluminum extrusion, and switchpoints is adopted.

Three speaker switchovers are carried and carry the large-sized speaker termination and the canon type termination.

Separation of a pre part and a main part can be operated in the front panel, and the power amplifier input level of a right-and-left independency is carried. Moreover, three power amplifier direct inputs are carried.

Functionalities, such as a REC selector with an Off position, a balance control, a headphone jack, are carried.

Internal A
Power The

Rating of a mode
Form Master control integrated amplifier
<Power amplifier part>
Effective output (10Hz - 20kHz, both channel operation) 150W+150W (6ohms)
110W+110W (8ohms)
Dynamic power 320W+320W (2ohms)
240W+240W (4ohms)
190W+190W (6ohms)
THD (10Hz - 20kHz) 0.008% (at the time of 8 ohms and an effective output)
Cross modulation distortion (60Hz:7kHz=4:1, SMPTE) 0.008% (8ohms)
Dumping factor 200 (8ohms)
Frequency characteristic (1W) DC-300kHz+0 -3dB
Input sensitivity/input impedance (1kHz) 1V (2kohm)
SN ratio (A network) 115dB or more
Envelope distortion Below a limit-of-measurement value
TIM distortion (SAWTOOTH) Below a limit-of-measurement value
Slew rate ±150v/microsec (8ohms)
Rise time 0.5microsec
Headphone output 150mW (33ohms)
Load impedance 4-16ohm
<Preamplifier part>
Input sensitivity/input impedance (1kHz) Phono man month: 2.0mV / 47kohm
Tuner, compact disk, Tape Play 1, 2, and 3, Line1, 2:150mV / 47kohm
Maximum permissible input Phono MM:270mV(1kHz
Output voltage (1kHz) Tape Rec(PIN): 150mV / 47kohm
Output load impedance (1kHz) Tape Rec (PIN): 600ohms or more
SN ratio (A network) Phono man month: 88dB or more
Tuner, compact disk, Tape Play1, 2 and 3, Line1, 2:110dB or more
Subsonic Filter 16Hz (-3dB, 6 dB/oct)
Presence (Volume-40dB) +2dB(200Hz)
Audio muting -20dB
Power dissipation (Electrical Appliance and Material Control Law) 350W
Dimensions Width 450x height 176x depth of 486mm
Weight 32.1kg