WORKING CONDITION. DOES NOT COME IN ORIGINAL BOX OR WITH ANY ACCESSORIES. HAS MANY SCRATCHES. SEE PICTURES.

The dbx 3231L Graphic Equalizer is a high performance multifunctional unit designed
to deliver all the flexibility and power that professional users demand. Featuring longthrow precision sliders, switchable high- and low-pass filters, balanced / unbalanced
connectors, and ultra low-noise performance, the 3231L is more than equal to any critical audio task requirements.

The 3231L offers 31 ISO standard center, 1/3 octave constant Q frequency bands in a
single package. Selectable 6 or 12 dB of boost/cut gives the user superior signal processing control, while the use of low tolerance components yields accurate frequency
centers. Features variable high pass and switchable low pass filters.

The unit also includes a passive bypass system that completely removes the equalizer
from the audio path when power is off. Also included is an active bypass that allows
comparison of the equalized signal with the original.

Revolutionary Engineering

XLR, barrier strip, and 1/4 inch tip-ring-sleeve connectors make the unit easy to integrate into any type of balanced or unbalanced audio system used in a rugged 3U EIA
standard 19” cold-rolled steel chassis, the 3231L will stand up to years of abuse, making
it a valuable asset for permanent installations or touring companies.

Recording studios, broadcast facilities, sound reinforcement engineers, musicians, and
sound contractors alike will find that the straightforward design and versatile signal control options make the 3231L a powerful audio tool.

dbx uses only the highest quality, low tolerance components, ensuring excellent reliability and uncompromising sound quality. From permanent installations to sound contracting, critical audio to sound reinforcement, the 3231L delivers total performance

Features

• 31 ISO standard center 1/3 octave constant Q frequency bands
• Variable high pass and switchable low pass 12dB/octave filters
• Electronically balanced inputs, servo balanced outputs
• XLR, barrier strip, and TRS connectors
• Switchable 6 or 12dB boost/cut
• 12 of input gain
• Passive bypass removes equalizer from signal path when power is off
• 8 segment LED headroom bargraph
• Chassis ground lift capability
• Toroidal power supply transformer
• Optional input and output transformers

Specifications

• Frequency Response: 20 Hz to 20 kHz, 0.1dB(all faders flat)
• Control Centers: 31 ISO Standard, 1/3 octave bands per channel
  from 20 Hz to 20 kHz: 20,25, 31.5, 40, 50, 63, 80,100, 125, 160, 200, 250,315, 400, 500, 630, 800,1k, 1.25k, 1.6k, 2k, 2.5k,3.15k, 4k, 5k, 6.3k, 8k, 10k,12.5k, 16k, and 20k.
• High Pass Filter (LO CUT):12 dB/octave, variable from 25 Hz – 200 Hz.
• Low Pass Filter (HI CUT): 12 dB/octave, 15kHz.
• Nominal Control Range: 6 dB or 12 dB cut/boost
• Noise Level: <-92 dBu @ 6 dB boost/cut range (faders flat, test bandwidth 22 Hz to 22 kHz)
• Input Impedance: 75K ohms balanced, 50K ohms unbalanced
• Maximum Input Level: +22 dBu (ref.:0.775 Vrms)
• Output Impedance: 100 ohms balanced, 50 ohms unbalanced
• Maximum Output Level: +22 dBu (ref.:0.775 Vrms)
• Dynamic Range: 114 dB
• Headroom Indicator: 3 to 42 dB, 8 segments, <.003% (at 1kHz, +4 dBu input, test bandwidth 22 Hz to 22 kHz).
  THD + Noise: <.003% (at 1 kHz, +4 dBuinput, test bandwidth 22 Hzto 22 kHz).
• Power Requirements: 100, 120, 230 240 VAC 50/60 Hz 30 watts
• Dimensions: 7.9″ D X 3.5″ H X 19″ W
• Weight: 8.5 lbs