Dayton Audio RSS210HO-4

8″ subwoofer · 4 Ω · 300 W RMS

29.6 HzFs, resonance

0.40Qts

0.66 ft³Vas

0.43″Xmax

300 WRMS

Source	parts-express.com · manufacturer data
Checked against source	October 2026
Thiele/Small parameters	complete
Mounting dimensions	3 of 4 — missing: magnet diameter; the designer will use an estimate

Recommended box

For a sedan, one sub, 300 W. It’s the same math as the designer’s step-by-step mode, where you can fit the box to your space, vehicle and amp and get plans, a cut sheet and DXF.

Sealed

smaller, tighter

0.32 ft³ (9 L)

Net volume

Manufacturer spec: 0.41 ft³ · source

Bass character (Qtc)	Flat and accurate · 0.71
Fc	52 Hz
F3 (−3 dB, no cabin gain)	55 Hz
Example box (outside)	10 5/8″ × 10 5/8″ × 8 5/8″

Open sealed box in designer

Ported

deeper, louder

0.92 ft³ (26 L)

Net volume

Manufacturer spec: 0.90 ft³ · source

Tuning (Fb)	33 Hz
Port	slot 1 × 14 5/16″, 34 5/8″ long
Port velocity at 300 W	64 ft/s
F3 (−3 dB, no cabin gain)	30 Hz
Example box (outside)	17 3/16″ × 15 3/4″ × 12 3/16″

Open ported box in designer

Deeper: 0.74 ft³ (21 L) tuned to 39 Hz, 18 11/16″ × 15 3/4″ × 7 1/2″ outside — a bigger box with flatter deep bass. Open in the calculator

Where to buy Amazon

Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Size	8″
Voice coils	4 Ω
RMS power	300 W
Fs	29.6 Hz
Qts	0.40
Qes	0.46
Qms	3.33
Vas	0.66 ft³

Re	3.69 Ω
Sd	33.1 in²
Xmax	0.43″
Vd	14.4 in³ calc.
Mms	100 g calc.
BL	12.2 T·m calc.
EBP	64 — sealed or ported calc.
Sensitivity, 1 W / 1 m	82.2 dB calc.

Mounting dimensions

Cutout diameter	7 5/16″
Mounting depth	4 15/16″
Overall diameter	8 3/8″

“≈” means the value isn’t in the spec sheet and a typical value for the size is used; “calc.” means it’s calculated from the published parameters. Check the manufacturer’s spec sheet before you build.

Data sources

parts-express.com/Dayton-Audio-RSS210HO-4-8-Reference-Series-HO-Subwoofer-4-Ohm-

Other Dayton Audio 8″ models

Dayton Audio DCS205-4 8″ · 4 Ω
Dayton Audio PCS8-4 8″ · 4 Ω
Dayton Audio RSS210HF-4 8″ · 4 Ω
Dayton Audio RSS210HO-8 8″ · 8 Ω
Dayton Audio SD215A-88 8″ · dual 8 Ω
Dayton Audio SS8-22 8″ · dual 2 Ω
Dayton Audio UM8-22 8″ · dual 2 Ω
Dayton Audio UMII8-22 8″ · dual 2 Ω

Similar 8″ subwoofers from other brands

Close in Fs, Qts and Vas — a box of similar volume will suit them.

JBL GTO804 0.32 ft³ sealed · 0.53 ft³ ported
Infinity Reference 860W 0.32 ft³ sealed · 0.53 ft³ ported
JL Audio 8W1v3-4 0.28 ft³ sealed · 0.49 ft³ ported
Audison Prima APS 8 D (DVC 4+4 ohm) 0.35 ft³ sealed · 0.71 ft³ ported
Ground Zero GZHW 8SPL-D2 FLAT (2x2 Ohm) 0.32 ft³ sealed · 0.53 ft³ ported
Soundstream EXACT 8 0.28 ft³ sealed · 0.53 ft³ ported

FAQ

What box does the Dayton Audio RSS210HO-4 need?

Recommended net volume: 0.32 ft³ sealed, 0.92 ft³ ported tuned to 33 Hz — for one sub in a sedan at 300 W. Fit the box to your space and amp in the free calculator, with plans and a cut sheet.

What are the Dayton Audio RSS210HO-4 Thiele/Small specs?

Fs 29.6 Hz, Qts 0.40, Vas 0.66 ft³, Xmax 0.43″, Sd 33.1 in².

What is the Dayton Audio RSS210HO-4 mounting depth?

Mounting depth is 4 15/16″, cutout diameter 7 5/16″. The inside depth of the box must exceed the mounting depth by at least 1″.

How much power does the Dayton Audio RSS210HO-4 handle and how do I wire it?

RMS power rating: 300 W. Wiring for several subs and amp power — in the wiring calculator.