White Instruments Model 4400 28 Band Vintage Equalizer
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.
Features:
- L-C Active Design
- Multiple Outputs
- 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
- Choice of a matching metal or clear plastic security cover
Specifications:
- 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
- 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
- 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
- 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
