Equalizzatore parametrico della serie top
di Technics , prodotto molto raro in quanto piuttosto costoso quando e
uscito , ottime prestazioni e con prezzi ad oggi molto alti .
Technics SH-9010, Stereo Equalizer of the
Manufacturer: MATSUSHITA ELECTRIC, Japan
Output voltage: Rated: 1 V, max. 5 V
THD: 0,02% (rated output voltage)
Input sensitivity & impedance: 1 V/47 kohms
Frequency response: 10 Hz ~ 20 kHz, + 0, - 0,2 dB, 10 Hz ~ 70 kHz, + 0, -
Signal-to-noise ratio: 83 dB (DIN)
Band level control: - 12 dB ~ 0 dB ~ + 12 dB (continuously variable)
Centre frequency control: - 1,6 oct. ~ 0 ~ + 1,6 oct. (continuously
Bandwidth control: Q = 0,7 ~ 7 (continuously variable)
Centre frequency: 60 Hz, 240 Hz, 1 kHz, 4 kHz, 16 kHz (5 points x 2)
Power consumption: 8 W
Power supply (AC): 110 ~ 240 V, 50/60 Hz
Dimensions: 450 x 92 x 364 mm
Weight: 6 kg
Same engineering than the bigga monaural
SH-9090P but in a slim-line format, fitting the famed (but not too
successful) Professional Series which
consisted of many amps, preamps, equalizers and metering units all
multiplied in various versions.
Besides the format, also changed was the
center frequency control, here pushed to plus or minus
1,6 octave for severly stacked
corrections on the same frequency spot.
The pushing is naturally due to the fact that the
SH-9010 is stereo 5 bands and not a
monaural 12-band parametric like the
The f0 center frequencies can therefore
be shifted as follows :
60Hz : 20Hz...180Hz
240Hz : 80Hz...720Hz
... that's not frequency shifting anymore but a wild swing mixed with a
tango top and two trip hop salsas !
The filtering circuits are otherwise the same : one adder-subtractor
plus two integrators per filter, high impedance buffer amp and low
output impedance output amp.
No balanced i/os, though, no master level control and somewhat more
fiddly concentric frequency/Q controls.
Following Technics' usual and slightly confusing name/nickname scheme,
the 9010 was nicknamed
10E (SH-9010E in full) but simply
SH-9010 outside Japan where no nickname was marketed other than