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You shouldn't need a PhD to tell a good graph from a decorative one. These lessons teach the vocabulary our archives use.
How to Read a Frequency-Response Graph
The most published graph in audio, and the most misread. What the axes mean, what smoothing hides, and which deviations actually matter.
What Is Directivity?
Speakers radiate in all directions, not just at you. What the off-axis sound does to the room — and why we design for it.
Active vs. Passive Speakers
Where should the crossover live — in the speaker with its own amplifiers, or in a box on the shelf? Both are valid; the trade-offs are concrete.