9.3 Speaker and Enclosure Reference Diagrams

Tiny version

Start with what the driver is, then move to the box style that fits its numbers and your goal.

Builder version

This section links the physical speaker parts, the spec-sheet numbers, and the box drawings that turn those numbers into a real build.

Use it when

You need to answer “what does this spec mean?” and “what kind of enclosure should I build next?” in one pass.

Cross-section of a woofer showing the cone, surround, spider, voice coil, magnet assembly, frame, and terminals. — Speaker anatomy is the first anchor. If you know which part moves, which part centers, and which part handles heat, the box and measurement pages make more sense immediately.

Thiele-Small Parameter Reference

The bridge page between spec-sheet numbers and enclosure decisions.

Fs, Qts, Vas, and Xmax in plain language
What numbers drive box choice
Best first stop after a driver spec sheet

Sealed Enclosure Blueprints

Use when you want the simpler, tighter, easier-to-build box path.

Dimensioned panel layout
Basic bracing guidance
Good fit for higher-Q drivers and smaller spaces

Ported Enclosure Blueprints

Use when output and efficiency matter more and you need a real port layout.

Slot-port construction cues
Useful for lower-Q drivers
Requires tuning discipline

Bandpass Enclosure Blueprint

Use this when you are intentionally chasing a narrower target and can tolerate more construction complexity.

Chamber ratio matters
Center baffle rigidity matters
Not the beginner default

Fast chooser

If you need to know...	Start here	Next move
What the speaker parts actually do	Speaker anatomy figure on this page	Open the T/S reference after that
Whether the driver wants sealed or ported	Thiele-Small Parameter Reference	Open the matching blueprint page
The simplest safe box path	Sealed Enclosure Blueprints	Then check volume against driver specs
A louder, tuned enclosure	Ported Enclosure Blueprints	Confirm tuning with the math references
A more complex specialty enclosure	Bandpass Enclosure Blueprint	Double-check chamber ratio and target bandwidth

Common mistake

People often jump straight from “this driver looks powerful” to a box design. The safer sequence is: learn the parts, read the T/S numbers, choose the enclosure family, then build from the blueprint that matches that family.