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dbx 2231 Dual 31 Band Graphic Equalizer / Limiter with Type III
The DBX 2231 Dual 31-Band Graphic Equalizer gives you 2 channels with 31 bands each 1/3 octave to achieve the most precise tone control you can get. The DBX-2231 equalizer combines a superb EQ circuit a powerful limiter and revolutionary Type III noise reduction that increases S/N ratio by 20dB. The PeakPlus limiter's threshold ranges from 0dBu to +20dBu and can transparently tame the wildest hits or subtlest nuances of any signal. A 4-segment LED bar graph for both gain reduction and output level offers the most comprehensive visual feedback available. XLR barrier strip and 1/4" connectors; 45mm nylon sliders; and 12dB input gain stage provide pro flexibility and performance. dbx also includes status LEDs for all settings on the front panel of the 2231 Dual Graphic Equalizer.
dbx 2231 Dual 31 Band Graphic Equalizer Features:
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Revolutionary instant encode/decode Type III® Noise Reduction in-circuit at the push of a button. Increases S/N ratio by up to 20dB
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Patent-pending PeakPlus Limiter threshold range from 0dBu to +24dBu (off) can transparently tame the wildest hits or the subtlest nuances of any signal
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Four segment LED bargraph for BOTH Gain Reduction AND Output Level
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Status LEDs offer visual feedback for all settings on the front panel
dbx 2231 Dual 31 Band Graphic Equalizer Specifications:
INPUT
Connectors: 1/4" TRS, female XLR (pin 2 hot), and barrier terminal strip
Type: Electronically balanced/unbalanced, RF filtered
Impedance: Balanced 40k ohm, unbalanced 20k ohm
Max Input Level: >+21dBu balanced or unbalanced
CMRR: >40dB, typically >55dB at 1kHz
OUTPUTS
Connectors: 1/4" TRS, male XLR (pin 2 hot), and barrier terminal strip
Type: Impedance-balanaced/unbalanced, RF filtered
Impedance: Balanced 200 ohm, unbalanced 100 ohm
Max Output Level: >+21dBu balanced/unbalanced into 2k or greater
>+20dBm balanced/unbalanced (into 600)
SYSTEM PERFORMANCE
Bandwidth: 20Hz to 20kHz, +/-0.5dB
Frequency Response: <10Hz to >50kHz, +0.5/-3dB
Noise Reduction In: (+/-6 and +/-12dB range):
Signal-to-Noise: >102dB, unweighted, ref: +4dBu, 22kHz measurement bandwidth
Dynamic Range: >120dB, unweighted
Noise Reduction Out: (+/-6dB range):
Signal-to-Noise: >94dB, unweighted, ref: +4dBu, 22kHz measurment bandwidth
Dynamic Range: >112dB, unweighted
Noise Reduction Out: (+/-12dB range):
Signal-to-Noise: >90dB, unweighted, ref: +4dBu, 22kHz measurement bandwidth
Dynamic Range: >108dB, unweighted
THD + Noise: <0.04%, 0.02% typical at +4dBu, 1kHz
Interchannel Crosstalk: <-80dB, 20Hz to 20kHz
Noise Reduction: Up to 20dB of dynamic broadband noise reduction
FUNCTION SWITCHES
Type III® NR: Activates dbx® Type III® Noise Reduction
EQ Bypass: Bypasses the Graphic Equalizer section in the signal path
Low Cut (recessed): Activates the 40Hz 18dB/octave Bessel high-pass filter
Range (recessed): Selects either +/- 6dB or +/-15dB slider boost/cut range
INDICATORS
Output Level Meter: 4-LED bar graph (Green, Green, Yellow, Red) at -10, 0, +10, and +18dBu
Gain Reduction Meter: 4-LED bar graph (all Red) at 0, 3, 6, and 10dB
Type III® NR Active: Yellow LED
EQ Bypass: Red LED
Clip: Red LED
Low Cut Active: Red LED
+/-6dB range: Yellow LED
+/-12dB range: Red LED
POWER SUPPLY
Operating Voltage: 100VAC 50/60Hz, 120VAC 60Hz
230VAC 50/60Hz
Power consumption: 23W
Main Connection: IEC receptacle
PHYSICAL
Dimensions: 5.25" H X 19" W X 7.9" D (13.335cm x 48.3cm x 20.1cm)
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