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Tools: REW & mics

Software, microphones, and interfaces.

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Why it matters

The toolchain decides how much trust you can put in the graph.

A calibrated microphone, sensible levels, correct routing, and repeatable mic placement are more important than fancy analysis. Poor setup can make a good speaker look bad.

How it works

Measurement software such as REW sends a sweep through the speaker and records the response. A USB measurement mic is simple because the interface is built in. An XLR measurement mic needs an audio interface with phantom power.

Calibration files correct the microphone response. Loopback timing or acoustic timing can help with phase and delay work.

Common mistakes

Simple example

Why measure Measuring shows what a build is doing before your ears, room, and memory blur the result. It helps find response problems, distortion, polarity mistakes, and tuning errors. Frequency response Frequency response shows how loud a speaker is at each frequency. It helps reveal balance, crossover behavior, box tuning, and room problems. Phase Phase describes timing between waveforms. Around a crossover, poor phase alignment can make two drivers cancel instead of sum. Room & placement The room changes bass, imaging, and tonal balance. Speaker position, listener position, and nearby boundaries can matter as much as the speaker design.

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