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Single Channel * L-C Active * Boost/Cut
One-Third Octave - 28 Band
High and Low-Pass Band Limiting
Ultimate in Performance and Reliability
Model 4400
L-C Active One-Third Octave Graphic Equalizers
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The Studio Standard:
The Model 4400 is perhaps the highest performance and most reliable one-third octave graphic equalizers on the market today. It has been in continuous production by White Instruments for more than 15 years.
The 4400 features 28 one-third octave L-C active filters on I.S.O. standard frequency centers from 31.5Hz through 16kHz. Each filter has a range of ±10dB.
L-C Active Design:
A pair of inductors/capacitors (L-C) are hand-tuned to create the resonant circuit of each filter. As passive devices they add no noise and are intrinsically reliable.
Multiple Outputs:
Three outputs are provided and can be used to distribute the signal or biamp/triamp when an accessory crossover network is inserted in its powered socket. A digital pink noise generator can also be used in the crossover socket to turn the equalizer into a highly reliable masking noise source.
Other Features & Options:
The 4400 includes adjustable high and low-pass filters; input and outputs 2 & 3 level attenuatiors; EQ in/out switch; sockets for optional input and output isolation transformers; and choice of a matching metal or clear plastic security cover. Let the specifications speak for themselves.
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Specifications:
Model 4400
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Number of Channels:
One.
Frequency Range:
20Hz - 20kHz -2dB, typical with all 1/3 octave filters set at center.
Dynamic Range:
108dB
Recommended Operating Level:
0dBu (0.775 volts rms).
Maximum Operating Level:
+18dBu into 600 ohms. +15dBu into 600 ohms using optional output transformer(s).
Noise:
Better than -90dBu (re. 0.775 volts) at unity gain, 20kHz bandwidth. Worst Case.
Distortion:
Less than 0.02% THD at +18dBu into 600 ohms, 20kHz bandwidth.
Filter Type:
L-C active, single-pole pair.
Filter Control Centers:
28 one-third octave filters on I.S.O. standard frequency centers from 31.5Hz through 16kHz.
Filter Center Frequency Tolerance:
±5%.
Filter Controls:
Rotary potentiometers.
Filter Control Range:
±10dB at center frequency.
EQ In/Out Switch:
Front panel mounted. By-passes 1/3 octave filters only. Silent operation.
High-Pass Filter:
-3dB point adjustable from 20Hz -160Hz, 12dB/octave response.
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Low-Pass Filter:
-3dB point adjustable from 20kHz -5kHz, 12dB/octave response.
Level Adjustments:
Input and Outputs 2 & 3; 0dB to -20dB. Continuously variable.
Connectors:
Barrier Strips.
Input/Output Circuits:
Input
Active balanced differential. Better than 70dB common mode rejection. Plug-in isolation transformer available.
Outputs
Single ended. Plug-in isolation transformer(s) available.
Input Impedance:
~100 kilohms.
Number of Outputs:
3.
Output Impedance:
<100 ohms. 300 ohms with optional output transformer(s)
Power Requirements:
115 /230 VAC, 50/50Hz, user selectable on rear panel, ~5.5W.
Dimensions and Weight:
3.5" by 19" (rack mount 2RU) by 8"
8.9cm by 48.3cm by 20.3cm
8 lbs. - 3.6kg
Finish:
Black painted brushed aluminum. White nomenclature. Matching metal security cover furnished.
Accessories:
Clear plastic security cover
Please specify when ordering.
Transformers
4390 Input Transformer Plug-in.
4391 Single Output Transformer Plug-in.
4392 Dual Output Transformer Plug-in.
4393 Triple Output Transformer Plug-in.
Crossover Networks
Please contact White Instruments.
6, 12, 18 & 24dB/Octave for Bi-amp & Tri-amp.
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Please Note: White Instruments reserves the right to improve our products and to change features and specifications without notice.
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