Sundown Audio subwoofers

Thiele/Small parameters of Sundown Audio subwoofers (6.5″, 8″, 10″, 12″, 15″, 18″) and a recommended sealed and ported box for every model, in a free sub box calculator.

Search Size Voice coils Ω per coil Qts

136 models

Model	Size	Voice coils	Fs, Hz	Qts	Vas, ft³	Xmax, in	RMS, W
SA Classic 6.5 D2	6.5″	dual 2 Ω	48.9	0.45	0.14	0.39	300
SA Classic 6.5 D4	6.5″	dual 4 Ω	51.8	0.48	0.13	0.39	300
U-6.5 D2	6.5″	dual 2 Ω	42	0.49	0.10	0.75	500
U-6.5 D4	6.5″	dual 4 Ω	38.7	0.47	0.13	0.75	500
Xv2-6.5 S4	6.5″	4 Ω	55.8	0.58	0.06	0.63	400
Ev6-8 D2	8″	dual 2 Ω	46.2	0.51	0.21	0.55	400
Ev6-8 D4	8″	dual 4 Ω	45.6	0.55	0.23	0.55	400
HZ-8 D4	8″	dual 4 Ω	41.3	0.46	0.27	0.55	300
M8 D2	8″	dual 2 Ω	44	0.42	0.13	0.71	800
M8 D4	8″	dual 4 Ω	45.5	0.45	0.12	0.71	800
SAv3-8 D2	8″	dual 2 Ω	38.3	0.31	0.24	0.63	600
SAv3-8 D4	8″	dual 4 Ω	40	0.36	0.25	0.63	600
SDv4-8 D2	8″	dual 2 Ω	35.7	0.53	0.43	0.57	400
SDv4-8 D4	8″	dual 4 Ω	36.3	0.59	0.45	0.57	400
SML-8 D2	8″	dual 2 Ω	43.2	0.47	0.31	0.55	400
SML-8 D4	8″	dual 4 Ω	46.3	0.54	0.28	0.55	400
U-8 D2	8″	dual 2 Ω	39.4	0.35	0.22	0.71	750
U-8 D4	8″	dual 4 Ω	41.3	0.43	0.25	0.71	750
Xv3-8 D2	8″	dual 2 Ω	48.5	0.49	0.14	0.75	800
Xv3-8 D4	8″	dual 4 Ω	46.8	0.48	0.15	0.75	800
Ev4-10 D2	10″	dual 2 Ω	32.2	0.35	0.69	0.55	750
HZ-10 D4	10″	dual 4 Ω	33.1	0.47	0.81	0.55	500
HZS-10 D4	10″	dual 4 Ω	44.5	0.49	0.68	0.47	500
LCSv2-10 D4 !	10″	dual 4 Ω	34.8	0.51	1.63	0.55	500
M10 D1	10″	dual 1 Ω	37.8	0.68	0.27	1.38	2,000
M10 D2	10″	dual 2 Ω	37.7	0.66	0.28	1.38	2,000
NSv5-10 D1	10″	dual 1 Ω	44.8	0.46	0.23	—	3,000
NSv5-10 D2	10″	dual 2 Ω	47.2	0.46	0.19	—	3,000
NSv6-10 D1	10″	dual 1 Ω	44.4	0.49	0.22	1.38	3,500
NSv6-10 D2	10″	dual 2 Ω	43.8	0.33	0.23	1.38	3,500
SA Classic 10 D2	10″	dual 2 Ω	35.4	0.47	0.36	0.75	1,000
SA Classic 10 D4	10″	dual 4 Ω	36.6	0.49	0.38	0.75	1,000
SAv2-10 D2	10″	dual 2 Ω	37.1	0.33	0.37	0.75	1,250
SAv2-10 D4	10″	dual 4 Ω	36.1	0.34	0.44	0.75	1,250
SAv3-10 D2	10″	dual 2 Ω	36	0.41	0.36	0.87	1,500
SAv3-10 D4	10″	dual 4 Ω	36	0.42	0.30	0.87	1,500
SDDN-10 D1	10″	dual 1 Ω	38.7	0.25	0.26	1.38	3,500
SDv4-10 D2	10″	dual 2 Ω	27.4	0.51	1.28	0.57	600
SDv4-10 D4	10″	dual 4 Ω	27.1	0.56	1.41	0.57	600
SLD-10 D2	10″	dual 2 Ω	44.9	0.37	0.52	0.47	600
SLD-10 D4	10″	dual 4 Ω	46.8	0.44	0.43	0.47	600
SML-10 D2 !	10″	dual 2 Ω	35.2	0.69	0.84	0.55	600
SML-10 D4 !	10″	dual 4 Ω	36.1	0.40	0.66	0.55	600
Uv1-10 D2	10″	dual 2 Ω	48.5	0.32	0.29	1.18	1,500
Uv1-10 D4	10″	dual 4 Ω	41.1	0.35	0.41	1.18	1,500
Uv2-10 D2	10″	dual 2 Ω	50	0.47	0.20	1.18	2,000
Uv2-10 D4	10″	dual 4 Ω	48.2	0.55	0.22	1.18	2,000
Xv3-10 D1	10″	dual 1 Ω	41.4	0.52	0.29	1.18	2,500
Xv3-10 D2	10″	dual 2 Ω	39	0.52	0.33	1.18	2,500
Xv4-10 D1	10″	dual 1 Ω	41.4	0.52	0.29	1.18	2,750
Xv4-10 D2	10″	dual 2 Ω	37	0.41	0.30	1.18	2,750
Zv6-10 D1	10″	dual 1 Ω	38.5	0.41	0.29	1.38	3,250
Zv6-10 D2	10″	dual 2 Ω	40.5	0.42	0.26	1.38	3,250
Ev4-12 D2	12″	dual 2 Ω	32.4	0.37	1.36	0.55	750
Ev4-12 D4	12″	dual 4 Ω	36.6	0.48	1.09	0.55	750
HZ-12 D4	12″	dual 4 Ω	31.7	0.52	1.92	0.55	500
HZS-12 D4	12″	dual 4 Ω	32.8	0.48	2.00	0.47	500
LCSv2-12 D4	12″	dual 4 Ω	31.6	0.52	1.72	0.55	500
M12 D1 !	12″	dual 1 Ω	31.9	0.61	1.39	1.38	2,000
M12 D2	12″	dual 2 Ω	32.7	0.60	0.53	1.38	2,000
NSv5-12 D1	12″	dual 1 Ω	39.6	0.41	0.42	—	3,000
NSv5-12 D2	12″	dual 2 Ω	38.7	0.40	0.41	—	3,000
NSv6-12 D1 !	12″	dual 1 Ω	37.6	0.43	0.42	1.38	3,500
NSv6-12 D2	12″	dual 2 Ω	37.1	0.41	0.42	1.38	3,500
SA Classic 12 D2	12″	dual 2 Ω	33.7	0.52	0.75	0.75	1,000
SA Classic 12 D4	12″	dual 4 Ω	34	0.50	0.87	0.75	1,000
SAv2-12 D2	12″	dual 2 Ω	38.9	0.46	0.93	0.75	1,250
SAv2-12 D4	12″	dual 4 Ω	33.6	0.44	0.99	0.75	1,250
SAv3-12 D2	12″	dual 2 Ω	35	0.43	0.78	0.87	1,500
SAv3-12 D4	12″	dual 4 Ω	35	0.42	0.68	0.87	1,500
SDDN-12 D1	12″	dual 1 Ω	33.2	0.21	0.52	1.38	3,500
SDv4-12 D2	12″	dual 2 Ω	26	0.56	2.24	0.57	600
SDv4-12 D4	12″	dual 4 Ω	26.8	0.65	2.27	0.57	600
SLD-12 D2 !	12″	dual 2 Ω	43	0.53	0.95	0.47	600
SLD-12 D4	12″	dual 4 Ω	45.1	0.49	1.04	0.47	600
SML-12 D2	12″	dual 2 Ω	34.9	0.39	1.38	0.43	600
SML-12 D4	12″	dual 4 Ω	39.9	0.51	1.04	0.43	600
Uv1-12 D2	12″	dual 2 Ω	42.2	0.27	0.63	1.18	1,500
Uv1-12 D4 !	12″	dual 4 Ω	40	0.34	0.43	1.18	1,500
Uv2-12 D2	12″	dual 2 Ω	41.3	0.44	0.52	1.18	2,000
Uv2-12 D4	12″	dual 4 Ω	41.9	0.52	0.52	1.18	2,000
Xv3-12 D1	12″	dual 1 Ω	39.4	0.52	0.50	1.18	2,500
Xv3-12 D2	12″	dual 2 Ω	36.1	0.49	0.56	1.18	2,500
Xv4-12 D1	12″	dual 1 Ω	39.4	0.52	0.50	1.18	2,750
Xv4-12 D2	12″	dual 2 Ω	36.1	0.49	0.56	1.18	2,750
Zv6-12 D1	12″	dual 1 Ω	33.8	0.36	0.56	1.38	3,250
Zv6-12 D2	12″	dual 2 Ω	32.9	0.36	0.57	1.38	3,250
Zv7-12 D1	12″	dual 1 Ω	29.2	0.37	0.51	1.65	3,500
Zv7-12 D2	12″	dual 2 Ω	31.5	0.38	0.45	1.65	3,500
Ev4-15 D2	15″	dual 2 Ω	32.2	0.48	2.65	0.55	750
Ev4-15 D4	15″	dual 4 Ω	31.3	0.54	3.02	0.55	750
M15 D1	15″	dual 1 Ω	28.2	0.63	1.52	1.38	2,000
M15 D2	15″	dual 2 Ω	28.6	0.62	1.53	1.38	2,000
NSv6-15 D1	15″	dual 1 Ω	30.6	0.38	1.31	1.38	3,500
NSv6-15 D2	15″	dual 2 Ω	30.9	0.38	1.27	1.38	3,500
SA Classic 15 D2	15″	dual 2 Ω	37.8	0.46	1.96	0.75	1,000
SA Classic 15 D4	15″	dual 4 Ω	36.4	0.51	2.38	0.75	1,000
SAv2-15 D2	15″	dual 2 Ω	36.8	0.52	1.83	0.75	1,250
SAv2-15 D4	15″	dual 4 Ω	37.4	0.62	1.60	0.75	1,250
SAv3-15 D2	15″	dual 2 Ω	35	0.51	1.55	0.87	1,500
SAv3-15 D4	15″	dual 4 Ω	35	0.47	1.78	0.87	1,500
SDDN-15 D1	15″	dual 1 Ω	30.1	0.23	1.36	1.38	3,500
Uv1-15 D2	15″	dual 2 Ω	37.9	0.31	1.91	1.18	1,500
Uv1-15 D4	15″	dual 4 Ω	34.9	0.35	2.26	1.18	1,500
Uv2-15 D2	15″	dual 2 Ω	37.2	0.49	1.54	1.18	2,000
Uv2-15 D4	15″	dual 4 Ω	36.4	0.55	1.63	1.18	2,000
Xv3-15 D1 !	15″	dual 1 Ω	29.9	0.49	1.11	1.18	2,500
Xv3-15 D2	15″	dual 2 Ω	31.4	0.47	1.62	1.18	2,500
Xv4-15 D1 !	15″	dual 1 Ω	29.9	0.49	1.11	1.18	2,750
Xv4-15 D2	15″	dual 2 Ω	29.5	0.44	1.43	1.18	2,750
Zv6-15 D1	15″	dual 1 Ω	32.1	0.41	1.30	1.38	3,250
Zv6-15 D2	15″	dual 2 Ω	28.8	0.35	1.65	1.38	3,250
Zv7-15 D1	15″	dual 1 Ω	30.8	0.39	1.17	1.65	3,500
Zv7-15 D2	15″	dual 2 Ω	30.4	0.34	1.26	1.65	3,500
Inhuman-18 D1	18″	dual 1 Ω	23.9	0.20	1.96	1.61	7,500
M18 D1	18″	dual 1 Ω	26.2	0.68	3.96	1.38	2,000
M18 D2	18″	dual 2 Ω	25.7	0.65	4.15	1.38	2,000
NSv5-18 D1	18″	dual 1 Ω	28.9	0.44	3.22	—	3,000
NSv5-18 D2	18″	dual 2 Ω	28.8	0.42	3.16	—	3,000
NSv6-18 D1	18″	dual 1 Ω	28.6	0.45	2.79	1.38	3,500
NSv6-18 D2	18″	dual 2 Ω	28.4	0.38	2.93	1.38	3,500
SAv2-18 D2	18″	dual 2 Ω	29.1	0.37	4.03	0.75	1,250
SAv2-18 D4	18″	dual 4 Ω	31.9	0.39	3.78	0.75	1,250
SDDN-18 D1	18″	dual 1 Ω	30	0.31	2.55	1.38	3,500
Uv1-18 D2	18″	dual 2 Ω	31.3	0.33	4.78	—	1,500
Uv1-18 D4	18″	dual 4 Ω	31.4	0.38	4.78	—	1,500
Uv2-18 D2	18″	dual 2 Ω	30.9	0.51	3.95	1.18	2,000
Uv2-18 D4	18″	dual 4 Ω	30.9	0.58	4.05	1.18	2,000
Xv3-18 D1	18″	dual 1 Ω	26.7	0.44	4.60	1.18	2,000
Xv3-18 D2	18″	dual 2 Ω	28.2	0.54	3.88	1.18	2,000
Xv4-18 D1	18″	dual 1 Ω	25.9	0.55	3.31	1.18	2,750
Xv4-18 D2 !	18″	dual 2 Ω	25.6	0.48	0.62	1.18	2,750
Zv6-18 D1	18″	dual 1 Ω	26.6	0.45	3.43	1.38	3,250
Zv6-18 D2	18″	dual 2 Ω	24.1	0.40	4.11	1.38	3,250
Zv7-18 D1	18″	dual 1 Ω	23.5	0.43	3.49	1.65	3,500
Zv7-18 D2	18″	dual 2 Ω	27.3	0.42	3.35	1.65	3,500

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