EQ Q‑Factor Suggester

Enter the center frequency and dB cut. Choose the speaker type. The tool finds a Q that minimizes peak group delay while avoiding overly wide bandwidth.

Suggested Q
Peak group delay (ms)
−3 dB bandwidth (octaves)
−3 dB points (Hz)

Biquad design per RBJ cookbook; result balances peak group delay vs. bandwidth with speaker‑type weighting. Verify with measurement and listening.