VM Audio subwoofers

Thiele/Small parameters of VM Audio subwoofers (10″, 12″, 15″) and a recommended sealed and ported box for every model, in a free sub box calculator.

Size

Voice coils

Ω per coil

Qts

8 models

Model	Size	Voice coils	Fs, Hz	Qts	Vas, ft³	Xmax, in	RMS, W	Box, ft³ · Hz
10″ 3 models
ECW100	10″	dual 4 Ω	40	0.35	0.59	—	1,300	Sealed 0.49 Ported 1.38 · 39
EXW10	10″	dual 4 Ω	39	0.60	0.74	—	1,050	Sealed 0.92 Ported 0.78 · 42
SRW10	10″	dual 4 Ω	38	0.81	1.27	—	400	Sealed 1.13 Ported 1.02 · 38
12″ 3 models
ECW120	12″	dual 4 Ω	38	0.47	1.05	—	1,500	Sealed 0.76 Ported 1.17 · 35
EXW12	12″	dual 4 Ω	40	0.78	1.05	—	1,200	Sealed 1.59 Ported 1.09 · 35
SRW12	12″	dual 4 Ω	38	1.11	1.62	—	500	Sealed 1.66 Ported 1.31 · 35
15″ 2 models
ECW150	15″	dual 4 Ω	25	0.28	3.67	—	2,000	Sealed 1.22 Ported 3.57 · 30
EXW15	15″	dual 4 Ω	32	0.80	3.50	—	1,300	Sealed 2.68 Ported 2.79 · 34

Click a column header to sort. “!” means the model’s published specs don’t add up; details are on its page.

Qts: under 0.4 — ported 0.4–0.6 — either over 0.6 — sealed · “Box” — recommended sealed and ported net volume and ported tuning.