YAMAHA : Q2031B YAMAHA

Dual 31-Band 1/3 Octave Graphic EQ

Does your vocalist sound like she's had some nasal cavity work done recently? Does your stage piano sound like it's being played from the bottom of a swamp? Does your guitar mic shriek and scream more than... well, your guitar? Everyone knows that a graphic equalizer's main function is to shape sound without adding unwanted distortion or noise. But it's also a sad fact that sometimes this really important piece of equipment, designed to make you sound better, can actually become a big headache of its own. These three EQs from Yamaha do what EQs are supposed to do - clean up your sound and stay out of your way.

The GQ1031C is a mono EQ with 31 equalization bands at 1/3 octave intervals from 20Hz to 20kHz. It does a great job of removing all the extra little sonic litter that can creep into your sound during live performance. Of course, the GQ1031 comes with the EQ staple features of highpass filter, balanced I/O, Peak indicators, and Bypass button.

For a great graphic EQ, they don't get much better than the GQ2015A, a stereo EQ that's simple, easy-to-use, and packed with power. Since it's stereo, you can use it to control your entire mix or separately treat two individual sources. Imagine, 2-channel stereo versatility, all in a slim 1U-size. The GQ2015A offers equalization bands per channel at 2/3 octave intervals from 25Hz to 16kHz. All the EQ essentials are there, including highpass filter, balanced I/O, and bypass switch.

The Q2031B is a dual channel, 4-band graphic equalizer that gives you a smooth, clean sound without any hassles. Providing quiet operation with less than .05% total harmonic distortion and noise levels better than -96dB, you can be sure your signal is pure. The Q2031 offers 31 EQ bands per channel t 1/3 octave intervals from 20Hz to 20Khz, highpass filter, balanced I/O, sensitive peak indicators, and bypass button.

Features

Versatile EQ Control

Yamaha graphic equalizers incorporate active filters to provide minimum phase shift and smooth response at any boost or cut setting. The Q2031B offers 31 equalization bands at 1/3 octave intervals from 20Hz to 20kHz.

Range Switches

Switchable EQ gain of +/- 6dB or +/-12dB provides with a broad range, or a narrow, more precise scope of control. The +/-12dB range offers wide-range control, essential for broad range tonal variation or feedback control. The +/-6dB range provides fine control within a narrower range, well suited for acoustic tuning and subtle response shaping.

2-Channel Configurations

With synthesizers, signal processors, and other equipment offering stereo output as the rule, the Q2031B provides 2-channel versatility in single unit designs. The 2U-size Q2031B offers completely independent 2-channel control from input to output with separate 31 band equalization and variable high pass filters for each channel.

Outstanding Audio Performance

A graphic equalizer's main function is to shape sound, without adding unwanted distortion or noise. The Q2031B provides quiet operation with less than 0.05% total harmonic distortion; noise is kept to a minimum with levels better than -96dB. Yamaha equalizers supply smooth, natural sound that is even compatible with digital sources.

High Pass Filter

High pass filters are extremely useful in fighting against low-end boominess, AC hum, wind noise and preventing subsonic components from muddying the sound as well as wasting amplifier power. The Q2031B incorporates continuously variable high pass filters on both equalization channels. Providing 12dB of octave rolloff below the desired frequency, the filters can be independently adjusted with sliders, to any frequency between 20Hz to 200Hz.

Balanced Input/Output

Signal input and output is provided by both balanced 1/4" phone jacks and balanced XLR jacks, all rated at +4dB. This gives an In/Out interface that can be easily connected to other types of equipment.

Safety Devices

Independent peak indicators, to warn of excessively high signal levels, light when the output signal reaches 3dB below clipping. An automatic muting circuit mutes the equalizer's output for approximately 3 seconds after the power is switched on, to prevent transients from damaging amplifiers and speaker systems.

EQ Bypass

EQ ON/OFF switches provide easy EQ bypass and instant comparison between equalized and unequalized sound. LED indicators let you know when the EQ is on.

Rugged Design

All Yamaha graphic equalizers are built with rugged construction making them dependable for home or studio use, as well as on the road.

19" Rack Mountable

The Q2031B can be mounted in any standard 19 inch rack.

Acoustic Tuning

Use graphic qualization to fine tune any sound system to match the acoustics of a studio, concert hall, or any other sound environment. It can also be utilized to compensate for serious acoustic irregularities found in rooms that were not designed for music listening and keep properly designed studios or halls at their optimum sound level.

Feedback Control

In situations where restrictions make a feedback proof setup impossible, Yamaha graphic equalizers can be used to reduce the gain of problem frequencies, thus minimizing the possibility of sudden outburst of feedback that can ruin a performance.

Sound Shaping

Yamaha graphic equalizers are also creative tools that can shape the tone of the instrument or voice to achieve a better blend in the mix. When added to reverb, EQ can electronically simulate a wide range of acoustic environments.

Noise Suppression

Graphic equalization can effectively minimize tape hiss, stage rumble, wind noise, microphone popping, excessive sibilance and other sources of unwanted noise.