SoundQubed subwoofers

Thiele/Small parameters of SoundQubed 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

33 models

Model	Size	Voice coils	Fs, Hz	Qts	Vas, ft³	Xmax, in	RMS, W
HDS206 D2	6.5″	dual 2 Ω	45.4	0.48	0.12	0.35	350
HDS206 D4	6.5″	dual 4 Ω	45.4	0.48	0.12	0.35	350
HDX 6.5 D2 !	6.5″	dual 2 Ω	54.2	0.47	0.08	0.31	450
HDX 6.5 D4 !	6.5″	dual 4 Ω	54.2	0.47	0.08	0.31	450
HDS2.208 D2	8″	dual 2 Ω	44.4	0.51	0.19	0.51	600
HDS2.208 D4	8″	dual 4 Ω	44.4	0.51	0.19	0.51	600
HDX 8 D2	8″	dual 2 Ω	42.2	0.37	0.18	0.47	850
HDX 8 D4	8″	dual 4 Ω	42.2	0.37	0.18	0.47	850
HDS2.210 D2	10″	dual 2 Ω	33.7	0.37	0.62	0.55	600
HDS2.210 D4	10″	dual 4 Ω	33.7	0.37	0.62	0.55	600
HDS3.210 D2 !	10″	dual 2 Ω	33.9	0.33	0.47	1.02	1,200
HDS3.210 D4 !	10″	dual 4 Ω	33.9	0.33	0.47	1.02	1,200
HDX310 D1 !	10″	dual 1 Ω	30	0.27	0.46	1.42	1,500
HDX310 D2 !	10″	dual 2 Ω	30	0.27	0.46	1.42	1,500
HDS2.212 D2	12″	dual 2 Ω	31	0.39	1.61	0.55	600
HDS2.212 D4	12″	dual 4 Ω	31	0.39	1.61	0.55	600
HDS3.212 D2 !	12″	dual 2 Ω	32.2	0.53	1.03	1.10	1,200
HDS3.212 D4 !	12″	dual 4 Ω	32.2	0.53	1.03	1.10	1,200
HDX312 D1 !	12″	dual 1 Ω	26.9	0.32	1.01	1.42	1,500
HDX312 D2 !	12″	dual 2 Ω	26.9	0.32	1.01	1.42	1,500
HDX412 D1	12″	dual 1 Ω	31	0.31	0.88	0.83	2,000
HDS2.215 D2	15″	dual 2 Ω	26.9	0.55	3.53	0.55	600
HDS2.215 D4	15″	dual 4 Ω	26.9	0.55	3.53	0.55	600
HDS3.215 D2 !	15″	dual 2 Ω	28.3	0.60	2.94	1.18	1,200
HDS3.215 D4 !	15″	dual 4 Ω	28.3	0.60	2.94	1.18	1,200
HDX315 D1 !	15″	dual 1 Ω	26	0.34	2.76	1.42	1,500
HDX315 D2 !	15″	dual 2 Ω	26	0.34	2.76	1.42	1,500
HDX415 D1	15″	dual 1 Ω	29.6	0.34	1.94	0.83	2,000
HDS3.218 D2 !	18″	dual 2 Ω	29.6	0.63	3.53	1.18	1,200
HDS3.218 D4 !	18″	dual 4 Ω	29.6	0.63	3.53	1.18	1,200
HDX318 D1 !	18″	dual 1 Ω	27.6	0.44	5.95	1.42	1,500
HDX318 D2 !	18″	dual 2 Ω	27.6	0.44	5.95	1.42	1,500
HDX418 D1	18″	dual 1 Ω	22.8	0.44	5.77	1.22	2,000

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