Technics SH-9010
Technics SH-9010E
Technics 10E
november 1976
Same engineering than the bigga monaural
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
1Khz : 333Hz...3Khz
4Khz : 1,3Khz...12Khz
16Khz : 5,3Khz...48Khz.
... 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 Professional.
Technics SH-9010 specifications
S/N ratio :
90dB (IHF-A)
Frequency response :
10Hz...20Khz (+0 / -0,2dB)
10Hz...70Khz (+0 / -3dB)
1V / 47kOhm (1Khz)
1V / 300 Ohm (rated, 1Khz)
5V / 300 Ohm (maximum, 1Khz)
Band level control :
+12dB...-12dB
Center frequency control :
+1,6 octave...-1,6 octave
Bandwidth (Q) control :
Center frequencies (f0) :
60 / 240Hz
1 / 4 / 16Khz
Dimensions :
48,2 x 10,1 x 36,4cm
6kg (SH-9010)
5,8kg (SH-9010E)
List price :
100,000& (1978)
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赞助商推广Technics SH-9090P
Technics SH-9090
Big Universal Frequency Equalizer of the good kind (parametric) with two twists :
The twelve center frequencies can be individually shifted by as much as one octave so as to narrow or widen the actual &area& of intervention or even stack two controls over the same spot.
this is a monaural equalizer : you need two for stereo !
After that, the SH-9090P is a normal parametric EQ : variable Q (bandwidth) corrections but with Twist &1, this made a very versatile sound shaping item.
In fact, pushing it to its limits would bring you closer to a synthesizer than a normal equalizer as the f0 center frequencies can be shifted as follows :
10Hz : 5Hz...20Hz
30Hz : 15Hz...60Hz
60Hz : 30Hz...120Hz
125Hz : 62,5Hz...250Hz
250Hz : 125Hz...500Hz
500Hz : 250Hz...1Khz
1Khz : 500Hz...2Khz
2Khz : 1Khz...4Khz
4Khz : 2Hz...8Khz
8Khz : 4Khz...16Khz
16Khz : 8Khz...32Khz
32Khz : 16Khz...64Khz
... that's not frequency shifting anymore but a crazy rumba mixed with an electropop top and two rocky mountain swings !
Each of the twelve filters is made of one adder-substractor and two integrators or a high-pass filter, a bandpass filter and a low-pass filter operating in series.
Center frequency and Q changes come from changing resistances in the feedback loop, strapped between the two amp stages : - frequency settings act on negative feedback in the 1st amp stage, + frequency settings make the bandpass filter operate in parallel with the input resistance of the 2nd amp.
When at &0&, the bandpass filter is gounded so all active elements are out a high impedance buffer amp and an output amplifier with low output impedance are in to keep other components from influencing response of the SH-9090P : 10 Ohm at the unbal outputs !
Also in are Cannon (XLR) terminals (really balanced : hot / cold / ground), duplicates in unbalanced RCA plus a monitor output (unbal), mandatory 19& rack handles and printing on the top cover of the main curves for daily psychedelic trips.
The SH-9090P and SH-9090 seem to be the very same, aka 90P in Japan, the SH-9090P version being the USA export model - P for Professional, of course.
Sales-wise, Technics had more success with the identically engineered but reduced 2x5 bands , aka 10E in Japan, and the later SH-8065.
Technics SH-9090P specifications
Insertion loss :
less than +0,5dB
Frequency response :
20Hz...20Khz (balanced, all controls to &0& ; +0 / -0,5dB)
15Hz...30Khz (unbalanced, all controls to &0& ; +0 / -0,5dB)
3Hz...80Khz (unbalanced, all controls to &0& ; +0 / -3dB)
Noise voltage :
-88dBm (EQ in, bal.)
-90dBm (EQ in, unbal.)
-94dBm (EQ out, bal.)
-96dBm (EQ out, unbal.)
less than 0,5%
Master level control :
-6dB...0dB...+6dB
Band level control :
-12dB...0dB...+12dB
Center frequency control :
-1 octave...+1 octave
Bandwidth control :
Center frequencies :
10 / 30 / 60 / 125 / 125 / 500Hz
1 / 2 / 4 / 8 / 16 / 32Khz
100kOhm (bal)
50kOhm (unbal)
20 Ohm (bal)
10 Ohm (unbal)
Rated input voltage :
0dBm (bal)
0dBm (unbal)
Maximum output voltage :
+24dBm (bal)
+20dBm (unbal)
Dimensions :
45 x 19,3 x 42,6cm
List price :
200,000& ! (1975)
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