¥ 59,800 (released in December 1979)
Stereo frequency equalizer for sound creation and sound field correction.
The SH-8020 divides the wide band beyond the range of audibility into 12 bands, and each level can be changed within ± 12 db.
When fine level control is desired, the total variation can be controlled to ± 3 dB by operating the variable range switch.
Equipped with an equalizer position changeover switch, the output system of the speaker and deck can be selected with just a switch.
It is equipped with a characteristic switch that instantly produces inverse characteristics of the set frequency characteristics. In addition, pre-emphasis recorded sources can be played back to de-emphasis by simply switching the switch.
Each level control knob has a built-in LED for frequency control even in dark areas.
Indicators are also provided for related operating switches to make it easier to determine operating conditions.
Equipped with an equalizer on/off switch to easily check the effect of the equalizer.
Low distortion is achieved by a band-pass filter using a semiconductor inductor composed of a capacitor, resistor and semiconductor circuit without using any coil.
A 3-terminal regulator is used for power supply.
In order to suppress shock noise when the power is turned on/off, a muting circuit by relay is built in.
|Frequency characteristic||5 Hz to 100 kHz -1.0 dB|
|Maximum output voltage||8 v (1 kHz, 0.01% THD)|
|Rated output voltage||1V|
|Total harmonic distortion factor||0.01% (20 Hz to 20 kHz)|
|Signal-to-noise ratio (IHF-A)||105dB|
|Maximum Input Voltage||8V(1kHz)|
|Input impedance||47k Ω|
|Gain||0 ± 1 dB|
|Band level control||± 12 db, ± 3 db (12 elements continuously variable)|
|Center frequency||16 Hz, 31.5 Hz, 63 Hz, 125 Hz, 250 Hz, 500 Hz
1 kHz, 2 kHz, 4 kHz, 8 kHz, 16 kHz, 32 kHz
|Pwer||100 VAC, 50Hz/60Hz|
|External dimensions||Width 430x Height 153x Depth 244 mm|