SPECIFY

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One-Third Octave Analog R-C Active
Digitally Controlled
With or Without Front Panel Controls
Password Security

 

Series 4700-100k

Digitally Controlled
Active Analog Equalizers

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Photograph - 4700 - Front

System
Features

  • 20Hz - 100kHz +0, -3dB Frequency Response
  • One or Two Channel
  • Set-up & Control via Front or Master Panel or PC.
  • Ten Memories and Ten Presets
  • Compact. Requires Only 1 RU (1.75") Rack Space.
  • Secure. Password Protection
  • Servo-Balanced Inputs and Outputs Output Mute Relay
  • 3 Year Limited Warranty

 

 

General Description:
We have had numerous requests from the recording community for a modification of our 4700 Series due to new recording methodologies requiring a top end frequency response of 100kHz. Any 4700 model may be ordered with a frequency response of 20Hz - 100kHz +0, -3dB by adding the suffex, -100k, to the model number. Existing 4700s cannot be retrofitted.

Available Models:
4700-100k, 4700-2-100k, 4700XL-100k, 4700XL-2-100k, Pilot 4700-100k,
Pilot 4700-2-100k

The 4700s and two channel versions, 4700-2, are digitally controlled, R-C active, 28 band, one-third octave graphic equalizers with adjustable high and low-pass filters and 10 memory presets. They are constructed with or without full front panel controls. Factory installed remote control, network and back lighted LCD display options are available. 

Crossover & Pink Noise Options: 
The 4700 (but not the 4700-2) can be equipped with either a crossover network card or a pink noise generator card. These options must be installed by White Instruments at the factory. The crossover options include 2 or 3-way, Bessel, Butterworth or Linkwitz-Riley with 6, 12, 18 or 24dB/ octave characteristics. 

High and Low-Pass Filters: 
These band limiting filters are adjusted with the built-in software, each in 8 steps, over a range of 10Hz through 160Hz for the high-pass filter and 100kHz through 9kHz for the low-pass filter. The response is 12dB/octave. 

Other Features: 
A bypass switch on the rear panel performs a hardwire bypass of the equalizer by connecting the input(s) to the output(s). A mute relay mutes the output(s) on power-up/ down to protect the sound system. The servo-balanced input(s) and output(s) can be operated, unbalanced, without a change in level or dynamic range. Level(s) are adjusted in 0.5dB steps.

Photograph - 4700 - Rear
Model 4700

Photograph - 4700-2 - Rear
Model 4700-2

 

Specifications:
Series 4700-100k

Safety Certification:
UL Listed
 
Number of Channels:
4700, 4700XL, Pilot 4700  One.
4700-2, 4700XL-2, Pilot 4700-2 Two. 

Display & Front Panel Controls:
2 line by 16 character LCD display. 
4-key cursor Diamond. 
Function and Enter keys. 

Number of Memories:
10 (ten), non-volatile. 

Maximum Operating Level:
+18dBu into 600 ohms. Balanced or unbalanced. 

Frequency Response:
20Hz -100kHz +0, -3dB with all filters set to their flat settings.  

Dynamic Range:
Greater than 100dB. 

Recommended Average Operating Level:
0dBu (0.775 volts rms) for 18dB of headroom. 

Noise:
+82dBu, 20kHz Bandwidth, Worst Case. 

Distortion:
Less than 0.05% THD at maximum operating level. 

Input Circuit:
Active servo-balanced differential. Can operate unbalanced with no change in gain. 

Input Impedance:
60 kilohms, balanced. 30 kilohms, unbalanced. 

Input Common Mode Rejection:
Greater than 85dB at or below 1kHz and Greater than 65dB at 10kHz. 

Output Circuit:
Active servo-balanced differential. Can operate unbalanced with no change in gain. 

Output Impedance:
102 ohms, balance. 51 ohms, unbalanced. 

Muting:
Outputs are muted during power up and down. Each output can be individually muted.

Filter Type: 
R-C Active, Single-pole pair. 

Control Centers:
28 one-third octave filters on ISO standard center frequencies from 31.5Hz through 16kHz. 

Frequency Tolerance:
5% of center frequency. 

High-Pass Filter:
12dB/Octave response. Adjustable from 10Hz to 160Hz in 8 steps. 

Low-Pass Filter:
12dB/Octave response. Adjustable from 100kHz to 9kHz in 8 steps. 

Gain:
0dB to +12dB in 0.5dB steps. 

EQ In/Out Switch:
Located on the rear panel. Performs a hardwire bypass of the equalizer by connecting the input(s) to the output(s). 

Connectors:
Audio Signal - Barrier. 
Control - 9-pin Sub-D (if installed). 

Power Requirements:
100 - 130 VAC or 200-260 VAC, 50/50Hz. 
4700 - 19W (150mA). 
4700-2 - 28W (215mA). 

Dimensions and Weight:
1.75" by 19" (rack mount 1RU) by 12". 
4.5cm by 48.3cm by 30.5cm. 
9lbs. - 4.1kg. 

Operating Temperature:
1-70 degrees C. 

Finish:
Gray painted brushed aluminum. Black nomenclature. 

Software:
White Windows(95) v2.xx Software, (included with option). 

Options & Accessories:
-100k
- 100kHz Frequency Response. Factory Installed
4704 - 2 ft. interface cable, 9-conductor. 
Models 4700 & 4700-2 Factory Installed Options
4701 - Remote Preset Select Interface & PA422 Output. 
4702 - RS-232 Input Control Interface & PA422 Output. 
4703 - PA422 Control Interface. 
Model 4700 Factory Installed Options
4700BL - Backlit Display. 
4706(A) - Pink/White Noise Generator Card. 
4707 - Bi-amp Crossover Card. 
4708 - Tri-amp Crossover Card. 
4700BL & 4700-2BL - Backlit Displays.

Please Note: White Instruments reserves the right to improve our products and to change features and specifications without notice.


White Instruments Div. C Van R, Inc.
- P.O. Box 90003 Austin, TX 78709 U.S.A.
Phone: 512-389-5358  Fax: 512-301-3932
Email: sales@whiteinstruments.com
webmaster: Emory Straus - eestraus@mymediastaff.com