CT Sounds subwoofers

Thiele/Small parameters of CT Sounds 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

58 models

Model	Size	Voice coils	Fs, Hz	Qts	Vas, ft³	Xmax, in	RMS, W
MESO-6-5 D2 !	6.5″	dual 2 Ω	56.3	0.69	0.05	0.31	400
MESO-6-5 D4 !	6.5″	dual 4 Ω	58.9	0.62	0.06	0.31	400
TROPO-6-5 D2 !	6.5″	dual 2 Ω	57.5	0.64	0.13	0.28	200
TROPO-6-5 D4	6.5″	dual 4 Ω	61.5	0.66	0.11	0.28	200
BIO-8 D2	8″	dual 2 Ω	47.2	0.57	0.29	0.26	300
BIO-8 D4	8″	dual 4 Ω	48	0.62	0.31	0.26	300
HYDRO-8 D2	8″	dual 2 Ω	46.2	0.53	0.36	0.31	300
HYDRO-8 D4	8″	dual 4 Ω	47.5	0.60	0.37	0.31	300
MESO-8 D2	8″	dual 2 Ω	46.4	0.50	0.14	0.59	800
MESO-8 D4 !	8″	dual 4 Ω	50.3	0.47	0.13	0.59	800
STRATO-8 D2	8″	dual 2 Ω	47.1	0.89	0.10	0.47	600
STRATO-8 D4	8″	dual 4 Ω	45.9	0.85	0.10	0.47	600
TROPO-8 D2	8″	dual 2 Ω	45	0.46	0.25	0.33	400
TROPO-8 D4	8″	dual 4 Ω	42.6	0.50	0.29	0.33	400
BIO-10 D2	10″	dual 2 Ω	34.7	0.55	0.83	0.30	400
BIO-10 D4	10″	dual 4 Ω	35.5	0.60	0.93	0.30	400
HYDRO-10 D2	10″	dual 2 Ω	38.5	0.46	0.70	0.39	500
HYDRO-10 D4	10″	dual 4 Ω	39.4	0.52	0.73	0.39	500
MESO-10 D2	10″	dual 2 Ω	35.1	0.35	0.40	0.71	1,500
MESO-10 D4	10″	dual 4 Ω	35.9	0.39	0.38	0.71	1,500
OZONE-10 D2	10″	dual 2 Ω	34.6	0.57	0.50	0.59	800
OZONE-10 D4	10″	dual 4 Ω	36.8	0.58	0.46	0.59	800
STRATO-10 D2	10″	dual 2 Ω	37	0.56	0.33	0.59	1,250
STRATO-10 D4	10″	dual 4 Ω	38.2	0.51	0.35	0.59	1,250
TROPO-10 D2	10″	dual 2 Ω	41.8	0.61	0.54	0.43	650
TROPO-10 D4	10″	dual 4 Ω	41.5	0.62	0.59	0.43	650
TROPO-XL-10 D2	10″	dual 2 Ω	38.4	0.47	0.56	0.55	1,000
TROPO-XL-10 D4	10″	dual 4 Ω	40.1	0.51	0.47	0.55	1,000
BIO-12 D2	12″	dual 2 Ω	33.1	0.64	1.83	0.30	400
BIO-12 D4	12″	dual 4 Ω	35.2	0.75	1.74	0.30	400
EXO-12 D1	12″	dual 1 Ω	37.3	0.43	0.53	1.08	3,000
EXO-12 D2	12″	dual 2 Ω	37.6	0.50	0.57	1.08	3,000
HYDRO-12 D2	12″	dual 2 Ω	34.7	0.45	1.35	0.43	500
HYDRO-12 D4	12″	dual 4 Ω	36.8	0.48	1.28	0.43	500
MESO-12 D2	12″	dual 2 Ω	32.8	0.37	0.79	0.71	1,500
MESO-12 D4	12″	dual 4 Ω	34	0.40	0.72	0.71	1,500
OZONE-12 D2	12″	dual 2 Ω	30	0.58	1.12	0.59	800
OZONE-12 D4 !	12″	dual 4 Ω	39.1	0.67	0.70	0.59	800
STRATO-12 D2	12″	dual 2 Ω	31.1	0.55	0.78	0.59	1,250
STRATO-12 D4	12″	dual 4 Ω	31.8	0.54	0.79	0.59	1,250
THERMO-12 D2	12″	dual 2 Ω	33.9	0.42	0.52	0.73	1,500
THERMO-12 D4	12″	dual 4 Ω	35.2	0.47	0.52	0.73	1,500
TROPO-12 D2	12″	dual 2 Ω	32.5	0.56	1.57	0.43	650
TROPO-12 D4	12″	dual 4 Ω	34.1	0.59	1.55	0.43	650
TROPO-XL-12 D2	12″	dual 2 Ω	34.6	0.57	0.94	0.55	1,000
TROPO-XL-12 D4	12″	dual 4 Ω	37.5	0.65	0.88	0.55	1,000
BIO-15 D2	15″	dual 2 Ω	31.1	0.71	3.91	0.30	500
BIO-15 D4	15″	dual 4 Ω	31.2	0.70	4.17	0.30	500
MESO-15 D2	15″	dual 2 Ω	32.9	0.42	1.85	0.71	1,500
MESO-15 D4	15″	dual 4 Ω	33	0.45	1.86	0.71	1,500
STRATO-15 D2	15″	dual 2 Ω	28.2	0.58	2.22	0.59	1,250
STRATO-15 D4	15″	dual 4 Ω	29.2	0.64	2.17	0.59	1,250
THERMO-15 D2	15″	dual 2 Ω	31.7	0.45	1.41	0.73	1,500
THERMO-15 D4	15″	dual 4 Ω	34.3	0.51	1.29	0.73	1,500
TROPO-15 D2	15″	dual 2 Ω	33.7	0.57	3.40	0.49	—
TROPO-15 D4	15″	dual 4 Ω	36.1	0.66	2.91	0.49	—
TROPO-18 D2	18″	dual 2 Ω	22.3	0.77	6.98	0.53	650
TROPO-18 D4	18″	dual 4 Ω	23.4	0.75	6.83	0.53	650

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