Modular Sound Control Enclosures

QuietMod™ Series

Acoustical Performance Data
Sound Transmission Loss Data, dB

Click below for specifications and drawings

Octave Band Center Frequency, Hz	125	250	500	1K	2K	4K	STC
QuietMod Panels
H/P 38 2" Thick	24	25	33	43	50	55	38
H/P 42 4" Thick	23	31	40	49	56	62	42
H/P 44 4" Thick	27	34	41	46	53	59	44
H/P 50 4" Thick	29	37	48	56	57	54	50
H/H 50 4" Thick	26	44	50	54	57	64	50
H/H 52 4" Thick	37	43	47	53	54	57	52
H/H 54 4" Thick	40	46	51	55	58	62	54
H/H 59 10" Thick	43	45	56	66	67	77	59
All tests performed by Riverbank Acoustical Laboratories, an independent NVLAP accredited acoustical testing facility. The test method conforms with ASTM Designations E90-99 or E90-02 and E413-87.
Octave Band Center Frequency, Hz	125	250	500	1K	2K	4K	NRC
Sound Absorption Coefficients QuietMod Panels Click below for specifications and drawings
H/P 38 2" Thick	0.26	0.53	1.00	1.03	.97	1.02	0.90
H/P 42 4" Thick	0.68	1.06	1.12	1.08	1.03	0.98	0.95 (1.05)
H/P 44 4" Thick	0.45	0.96	1.15	1.10	1.05	0.97	1.05
All tests performed by Riverbank Acoustical Laboratories, an independent NVLAP accredited acoustical testing facility. The test method conforms with the requirements of the ASTM Standard Test Method for Sound Absorption and Sound Absorption Coefficients by the Reverberation Room Method: ASTM C423-90a and E795-00.