Форум за електроника

[raichev]

Усилвател HITACHI HA7700-един от най добрите на фирмата-мос фет усилвател изграден с качесвени компоненти,две самостоятелни захранвания-330лв.
0887 251 297

Form Integrated Amplifier
<Main-amplifier part>
Effective output 70W+70W (8 ohms, both channel drive, 5Hz - 30kHz)
THD 0.008% (at 5Hz - 30kHz, the time of an Output power 8ohms)
0.02% (at 5Hz - 100kHz, the time of 35W output 8ohms)
Cross modulation distortion (60Hz:7kHz=4:1) 0.008% (at the time of an Output power 8ohms)
0.003% (at the time of 35W output 8ohms)
Frequency characteristic DC-100kHz+0 -1 dB (DC)
Input sensitivity/impedance Main in: 1V/47kohm
SN ratio (IHF, A network) 115dB
Dumping factor 60 (1kHz, 8ohms)
Load impedance 4ohm-16ohm
<Preamplifier part>
Input sensitivity/impedance Phono1, 2 man month: 2.5mV/100 ohm, 22kohm, 47kohm, 100kohm
Phono1, 2 MC: 250 microvolts/100 ohms
Tuner, Aux, Tape play1, 2:150mV/47kohm
An Output voltage/impedance Tape rec out1, 2:150mV/600 ohms
Pre out: 1V/600 ohm
Phono maximum permissible input (1kHz, 0.01%) MM:300mV
MC:30mV
THD (1kHz) Phono1, 2 man month: 0.002% or less (AT Rec out, 1V)
Phono1, 2 MC: 0.01% or less (AT Rec out, 1V)
Tuner, Aux, Tape play1, 2:0.005% or less (AT Pre out, 1V)
Frequency characteristic Phono1, 2:20Hz-20kHz±0.2dB (RIAA deflection)
Tuner, Aux, Tape play1, and 2:10Hz-100kHz+0 -2.5 dB
SN ratio (IHF, A network) Phono1, 2 man month: 86dB
Phono1, 2 MC: 68dB
Tuner, Aux, Tape play1, 2:100dB
Tone control Bass: ±8dB (100Hz)
Treble: ±8dB (10kHz)
A low filter 15Hz, 6dB / oct
Muting -16dB
<Others>
Supply voltage AC100V, 50Hz/60Hz
Power consumption
(Electrical Appliance and Material Control Law) 175W
AC outlet Power-switch interlock: Two lines
Power-switch un-interlocking.: One line
Dimensions Width 435x height 164.5x depth of 383mm
Weight 16kg

[ELP]

[Razar]

На последната снимка се вижда че отзад на усилвателя има селектор на напрежение

[raichev]

Усилвателя е с два селектора на напрежението-за всеки траф-220волта за Европа или 110волта,когато е за Америка.