Part two · the drivers
The columns that decide whether a driver goes into a case: flange diameter against your baffle, mounting depth against your lid, impedance against your board, Vas against your air volume.
| Driver | Flange | Depth | Z | RMS | Sens. | F low | Vas | Links |
|---|---|---|---|---|---|---|---|---|
| Loading driver data… | ||||||||
0 drivers. Flange is the outside diameter of the frame — it sets your hole spacing. Depth is measured from the baffle face to the back of the magnet.
The cutout is the hole; the flange is what covers it. You pack flanges on the baffle, not cutouts. A 6.5″ driver is usually a 7.1″ flange, which is why four of them will not fit where you thought they would.
Mounting depth is measured from the baffle surface. Add 0.25″ for terminals and 0.5″ if the basket has a vented pole piece pointed at a wall.
Vas is the volume of air with the same compliance as the driver suspension. A 6.5″ sub with 2,441 cu in of Vas wants a much bigger box than a case gives it. Check the ratio before you fall in love with a driver.