Sealed box size for 2 10" subs
2 10" subs usually want 1.2–2 ft³ net (34–57 L) in a sealed box. Your sub’s manual wins: if it gives a volume, build to that.
Example: 1.6 ft³ (45.3 L) net in 3/4" MDF is a box 20 3/4" × 13" × 14" outside (width × height × depth).
Example box for 1.6 ft³ (45.3 L) net
Example box for 1.6 ft³ (45.3 L) net| What | Size |
|---|
| Outside (W × H × D) | 20 3/4" × 13" × 14" (527 × 330 × 356 mm) |
|---|
| Inside (W × H × D) | 19 1/4" × 11 1/2" × 12 1/2" |
|---|
| Gross volume | 1.6 ft³ (45.3 L) |
|---|
| Net volume | 1.6 ft³ (45.3 L) |
|---|
Cut sheet for the example box (3/4" MDF)
Cut sheet for the example box (3/4" MDF)| Piece | Qty | Size |
|---|
| Front (baffle) | 1 | 20 3/4" × 13" |
|---|
| Back | 1 | 20 3/4" × 13" |
|---|
| Top and bottom | 2 | 20 3/4" × 12 1/2" |
|---|
| Sides | 2 | 11 1/2" × 12 1/2" |
|---|
Typical net volume for 10" subs
Typical net volume for 10" subs| Subs | Sealed | Ported |
|---|
| 1 | 0.6–1 ft³ | 1–1.6 ft³ |
|---|
| 2 | 1.2–2 ft³ | 2–3.2 ft³ |
|---|
| 3 | 1.8–3 ft³ | 3–4.8 ft³ |
|---|
| 4 | 2.4–4 ft³ | 4–6.4 ft³ |
|---|
Before you cut
Take off the sub’s own displacement (in its manual, often 0.05 to 0.2 ft³ per sub) and any bracing: the box calculator does that and redoes the width.
Measure the space twice, including the angle of the seat back in a truck cab. A wedge box often fits where a rectangle doesn’t.
Volume ranges are common starting points for car subs, not a standard. The example uses the middle of the range, 3/4" MDF, and for ported boxes a slot port of 14 sq in per ft³ tuned to 32 Hz along the full inside height.
Other box sizes for 10" subs
Frequently asked questions
What size sealed box for 2 10" subs?
2 10" subs usually want 1.2–2 ft³ net (34–57 L) in a sealed box. Your sub’s manual wins: if it gives a volume, build to that.
What are the dimensions of a sealed box for 2 10" subs?
Example: 1.6 ft³ (45.3 L) net in 3/4" MDF is a box 20 3/4" × 13" × 14" outside (width × height × depth).
Should a 10" sub go sealed or ported?
Sealed is smaller and tighter. Ported is louder for the same power and goes deeper, but the box is bigger and needs a port.