LO-D HA-1100经典木壳名机日立金封管发烧纯功放

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LOD HA-1100经典木壳名机日立金封管发烧纯功放
大功率方形变压器 8支日立金封管音色暖耐听 推力也很好 .
电源开关换过 面板换过一个开关钮.补焊过个别地方 其它无修磨 年代久远木壳成色一般  成色看图.
价格1580 可淘宝 QQ835946269 电话13727816608
实拍图片:

[size=+3]Lo-D HA-1100
	130,000yen(1975 release)

[size=-1]Description [size=-1] The stereo Integrated Amplifier which concentrated the technical capabilities of the Lo-D to the development goal, and developed to it making the amplifier which is synthetically worthy. 2 steps of differentials constant current drive emitter setting inverted Darlington pure complimentary OCL circuitry was used for the power amplifier part, and it has realized the low distortion. Moreover, the linearity of a current characteristic is good by the parallel push pull of the pair transistor to which the property was equal, and also the large capacity power supply has realized the faithful transmit from the Koide power to the Oide power. The three-step stream composition which used the FET differential amplifier for the first rank is adopted as the equalizer stage, and a big dynamic margin and low distortion have been obtained by driving with ±2 power source. The same difference input form three-step stream-composition amplifier as an equalizer circuitry is used for a tone control circuit, and the final stage serves as an emitter-follower by a constant current load intensity. Thereby, the failure of an SN ratio and the surge of the frequency characteristic by the location of a tone are stopped. Moreover, to this tone control, it is able for the change of a turnover frequency to be able to perform Bass and three steps of Treble(s), and to adjust them to a more favorite tone quality. Furthermore, it is also possible to acquire the flat frequency characteristic with a tone-defeat switchpoint. 22 contact switchpoint type Attenuator is adopted as a volume. Moreover, the 3 steps of additive expression gain selector is carried. Loudspeaker B level adjustment is carried. The termination of Phono2 can carry out 6dB variable [ of the input level ]. The electronic formula protection network is carried. The low filter and the high filter of a two-step switching type are carried. The mode switch and the loudness switchpoint are carried.

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[size=-1]Rating of a mode[size=-1] [size=-1]Form [size=-1]Integrated Amplifier [size=-1]<Power amplifier part> [size=-1]Circuit system [size=-1]2 steps of differentials whole page hardwired-connection grounded-emitter inverted Darlington Pure complimentary OCL [size=-1]Effective output [size=-1]20Hz - 20kHz, both channel drive : [size=-1]90W+90W (4ohms) 80W+80W (8ohms) [size=-1]1kHz, both channel drive : [size=-1]100W+100W (4ohms) 90W+90W (8ohms) [size=-1]1kHz, one-side-channel drive : [size=-1]110W/110W (4ohms) 100W/100W (8ohms) [size=-1]Dynamic power (IHF)[size=-1]220W (8ohms) [size=-1]THD[size=-1]0.1% (at the time of an effective output) 0.006% (at the time of 1 / 2 effective output 1kHz) [size=-1]Cross modulation distortion (70Hz:7kHz=4:1)[size=-1]0.03% (at the time of an effective output) 0.03% (at the time of 1W output) [size=-1]Output bandwidth[size=-1]6Hz - 50kHz [size=-1]Frequency characteristic[size=-1]6Hz-60kHz+0 -1 dB [size=-1]Input sensitivity/impedance[size=-1]1V/70kohm [size=-1]Output-terminal[size=-1]A, B, C:4ohms - 16ohms A+B, A+C:8ohm-16ohm Headphone jack: 4ohms - 16ohms [size=-1]Dumping factor[size=-1]60 (1kHz, 8ohms) or more [size=-1]S/N (IHF, A network)[size=-1]100dB or more [size=-1]<Preamplifier part> [size=-1]Circuit system[size=-1]Equalizer amplifier: The differential three-step hardwired connection per step, an FET using Control amplifier: NF form, a first rank FET using [size=-1]Input sensitivity/impedance[size=-1]Phono1:2mV/50kohm Phono2:1.6-6mV/50kohm (succession variable) Tuner, Aux1, 2, Tape PB1, 2:100mV/50kohm [size=-1]Phono maximum permissible input[size=-1]Phono1:430mV (RMS, 1kHz) 2:330-1300mV (RMS, 1kHz) of Phono(es) [size=-1]An Output voltage/impedance [size=-1]Tape rec1, 2 : [size=-1]100mV/1kohm [size=-1]Pre out: [size=-1]1V/28 ohm (rate) 15V/28 ohm (maxima) [size=-1]Frequency characteristic[size=-1]Phono(RIAA deflection): 30Hz-15kHz±0.3dB [size=-1]Tone control [size=-1]Bass: [size=-1]±10dB (50Hz, 100Hz, 150Hz) Turnover frequency: 150Hz, 300Hz, 600Hz [size=-1]Treble: [size=-1]±10dB (6kHz, 10kHz, 20kHz) Turnover frequency: 1.5kHz, 3kHz, 6kHz [size=-1]Filter[size=-1]Low: 15Hz/30 Hz, 12dB / oct High: 8kHz/16 kHz, 6dB / oct [size=-1]Loudness control (Volume-30dB)[size=-1]+ 13dB (100Hz), +7dB (10kHz) [size=-1]S/N (IHF, A network, input short-circuit)[size=-1]Phono:75dB Tuner, Aux, Tape PB: 90dB [size=-1]Attenuator[size=-1]- 5, -10, -20dB (addition is possible) [size=-1]<Synthesis> [size=-1]The semiconductor used[size=-1]Transistor: 61 pieces FET: Eight pieces Diode: 32 pieces [size=-1]Supply voltage[size=-1]AC100V, 50Hz/60Hz [size=-1]AC outlet[size=-1]Power-switch interlock: One line Power-switch un-interlocking.: Two lines [size=-1]Power dissipation (Electrical Appliance and Material Control Law)[size=-1]200W [size=-1]Dimensions[size=-1]Width 468x height 188x depth of 395mm [size=-1]Weight[size=-1]18kg

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