This document is the operation manual for the Yamaha Q2031B, GQ1031C, and GQ2015A graphic equalizers. It provides instructions on safety precautions, front and rear panel functions, and typical system configurations. The guide details how to use controls such as the RANGE switch, HPF (High Pass Filter), EQ bypass, and level adjustments for precise audio equalization.
| Bandwidth (Q2031B/GQ1031C) | 20 Hz to 20 kHz, 31-band control |
|---|---|
| Bandwidth (GQ2015A) | 25 Hz to 16 kHz, 15-band control |
| Input Level | +4 dB |
| Input Connectors | Balanced XLR-type and 1/4" phone jack |
It selects the boost or cut range for equalization; off selects +/-12 dB, and on selects +/-6 dB.
Turn the EQ switch to the off position.