DSP Tuning Basics: Time Alignment, Crossovers, EQ
A DSP only sounds magic when you set it up right. Start with time alignment, then crossovers, then EQ — in that order.
A DSP gives you per-channel level, time alignment, crossovers and parametric EQ. The order you set those four things matters — get it wrong and you'll be EQ-ing around phase problems for hours.
Step 1: Time alignment
Measure the distance from each speaker to your headrest in centimeters, divide by 34.3 (the speed of sound in cm/ms) and enter that as delay on the closest speakers. The goal is for every driver's first wavefront to arrive at your ear at the same time.
Step 2: Crossovers
Set high-pass on tweeters (3.5–4 kHz, 18–24 dB/oct), mids (80 Hz, 12–24 dB/oct), and a low-pass on the sub (60–80 Hz, 24 dB/oct). Match acoustic slopes, not just numbers — listen for cancellation around the crossover point.
Step 3: Parametric EQ
Only EQ after time alignment and crossovers are dialled. Use narrow Q to cut peaks, wide Q to gently shape tonality. Cut more than you boost.