This document is about the user manual for Q2031B GQ1031C GQ2015A GRAPHIC EQUALIZER. The document provides a series of precautions, including using the rated voltage, using the specified AC power adapter, avoiding placement near heat sources, and not opening the device for disassembly or modification. It also mentions some cautions, such as grabbing the plug instead of the power cord when unplugging, leaving enough space between the AC power adapter and the device to avoid noise. The document also emphasizes the environmental requirements for device placement, such as avoiding environments with excessive dust, strong vibrations, extreme cold or heat. Finally, the document reminds users to pay attention to volume control when using the device, and avoid using high volume levels for a long time.
This manual begins with safety warnings and general usage guidelines for the Yamaha graphic equalizer series. It stresses using only the specified AC power source, keeping the unit away from water, avoiding heavy objects, and having qualified Yamaha service personnel perform any repairs.
The front panel features POWER, RANGE, HPF, EQ, and LEVEL controls, while the rear panel provides balanced XLR and 1/4" headphone jacks with +4 dB input and output levels. Detailed specifications cover frequency ranges, high‑pass filter settings, and band‑by‑band equalization for each model. This manual is written in Japanese.
| Frequency range (Q2031B / GQ1031C) | 20 Hz – 20 kHz |
|---|---|
| Frequency range (GQ2015A) | 25 Hz – 16 kHz |
| Input / Output level | +4 dB (both) |
| Connector type | Balanced XLR‑3‑31 and 1/4" TRS |