Laboratory Standard
Series
Solid State Graphic
Frequency Equalizer
Circuitry
Unlike conventional
graphic equalizers using LC resonant circuits, the entire control circuitry of
the G-11 features semi-conductors and capacitors, which makes it possible to
offer not only an unrivalled 0,005% THD and ID even at 2V output but a superb S/N
ratio exceeding 110dB (IHF A-curve)
Functions
The audio frequency
ramge for both right and left channels is divided into 10 bands in 1 octave
increments based upon the "A" tone, (440Hz) which is the standard
tone of musical instruments.
10 center-frequency
points are provided for each channel, which permit adjustment of the peak and
dip at each point, enabling you to create whatever frequency response curve you
want.
Overall selection of
the maximum variable amount of peak and dip can be made by 2 steps (±6dB and
±12dB), which allows such operations as manual tone control for large tonal
variations or as in the case of our Linear Equalizer for small variations,
Therefore, you can enjoy wide range compensation of frequency response, such as
frequency compensation of loudspeakers or phono cartridges, optimum control of
room acoustic, compensation of RIAA curve, or frequency compensation of
tapedecks, etc.
A bypass switch is
also provided to check the effect of this equalizer and to compare equalized
and unequalized response.
Specifications
Output Voltage: Typically 1V, max 6V (at flat position)
Output
Impedance: 500 ohms
Total Harmonic
Distortion: no more than 0,005% (output
1V, 20 - 20,000 Hz, flat)
Intermodulation
Distortion: no more than 0,005% (output
1V, 60 Hz:7kHz = 4:1, flat)
Input
Sensitivity: 1V
Input
Impedance: 100 kohms
Frequency
Response: 10 Hz - 100,000 Hz (within
-1dB, at flat position)
Gain: 0dB (within ±0,5 dB, at flat position)
S/N Ratio:
better than 115 dB
(at flat position, IHF A weighted, input short-circuited)
Better than 95 dB
9at flat position, RMS input short-circuited)
Equalizer Centre
Frequency: 28, 55, 110, 220, 440, 880,
1,8k, 3,5k, 7k, 14k Hz
Maximum Variable
Amount: ±12 dB and ±6 dB (selectable)
Bandwidth: Q = 2.3
Channel
Separation: better than -80 dB (1 kHz)
Residual Noise: below 0,018 mV (at flat position)
Additional
Features: Range Selector Switch, Bypass
Switch, Extra AC Outlet (unswitched 300 W)
Power
Consumption: 23 W
Dimensions (W x H x
D): 438 x 314 x 126 mm (17-1/4" x
12-3/8" x 4-15/16")
Weight: 5,9 kg (12,9 lbs) Net
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