Q2031B 31-band graphic Equalizer

• Two independent channels of graphic EQ with full 31-band control from 20Hz to 20kHz.
• Selectable ±6 dB or ±12 dB EQ ranges.
• Exceptionally quiet operation with less than 0.05% total harmonic distortion.
• Noise levels below -96 dB with a smooth, natural sound that is compatible with digital sources.
• Continuously variable high pass filters on both channels provide 12dB/octave roll-off below any frequency from 20 Hz to 200 Hz.
• Balanced +4 dB 1/4" phone jacks and balanced XLR jacks for both input and output.
• Independent peak indicators for each channel light when the output signal reaches 3 dB below clipping.
• EQ ON/OFF switches provide one-touch EQ bypass and instant comparison.
• Rugged 19" rack mountable design.
• Optional security cover.

Affordable Professional Graphic EQ

Graphic equalization is indispensable for response control in a wide range of audio applications. If you need one or more stand-alone graphic EQ units, the Yamaha Q2031B is an outstanding choice that delivers professional quality with versatile control and outstanding audio performance. Use the Q2031B for live sound, recording, A/V production, electronic musical instruments, broadcasting, music listening, or any other application that requires precise response tailoring.

The Q2031B features two independent channels of graphic EQ with full 31-band control over the 20Hz to 20kHz range.

• Frequency response 20Hz to 20kHz+0.5dB,-0.5dB (@+4dBu 600Ω)
• Total harmonic distortion Less than 0.05% (@+4dB 600Ω EQ=FLAT)
• Hum & noise level -96dBu (EQ=ALL FLAT INPUT LEVEL MAX)
• Center frequency 20Hz to 20kHz (1/3 oct 31band)
• Level control +/-12dB / +/-6dB (selectable)
• Filter HPF = -12dB/oct 20Hz to 200Hz variable
• Power requirement AC100V, 50/60Hz,AC120V, 60Hz,AC230V, 50Hz
• Power consumption 20W
• Dimensions (W x H x D) 480 x 88 x 230mm (18.7" x 3.4" x 9"), 2U
• Weight 4.0kg (8.8lbs)

ANALOGUE INPUT SPECIFICATIONS

Terminal INPUT(A,B)

Actual Load Impedance 15Kω

For Use With Nominal 600Ω Lines

Sensitivity +4dBu

Max Level before Clip +24dBu

Connector XLR-3-31type,TRS phone

*1 XLR-3-31 type connectors are balanced. (1=GND, 2=HOT, 3=COLD)

*2 Phone jacks are balanced. (Tip=HOT, Ring=COLD, Sleeve=GND)

*0 dBu=0.775 Vrms.

ANALOGUE OUTPUT SPECIFICATIONS

Terminal OUTPUT(A,B)

Actual Load Impedance 150kΩ

For Use With Nominal 600Ω Lines

Sensitivity +4dBu

Max Level before Clip +24dBu

Connector XLR-3-32type,TRS Phone

*1 XLR-3-32 type connectors are balanced. (1=GND, 2=HOT, 3=COLD)

*2 Phone jacks are balanced. (Tip=HOT, Ring=COLD, Sleeve=GND)

*0 dBu=0.775 Vrms.