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Lcomp returns!

B-Quiet Lcomp
Back by popular demand! Lcomp's foam/lead composite offers superior noise reduction

Comparisons  

  B-Quiet®  Extreme B-Quiet® Ultimate Dynamat® Xtreme

Acoustic Loss Factor
ASTM E756 @ 200 Hz:

0C (32F)
10C (50F)
20C (68F)
30C (86F)
40C (104F)

0.16
0.19
0.29
0.20
0.14
0.23
0.26
0.39
0.32
0.24
0.24
0.26
0.42
0.26
0.19
Temperature Range -55C to +110C
-67F to +230F
-60C to +145C
-76F to +293F
-54C to +149C
-65F to +300F
Thickness 1.15mm (45mil) 1.6mm (60mil) 1.7mm (67mil)
Weight (per sq. ft.) 0.33 lb 0.35 lb 0.45 lb
Price (per sq. ft.)

 

$1.50

(price based on 100+ sq. ft.)

$2.37

(price based on 150+ sq. ft.)

$6.94

(price based on 36 sq. ft.)

 

  B-Quiet®  Vcomp B-Quiet®  Lcomp

Transmission Loss
 in dB:


125Hz
250Hz
500Hz
1KHz
2KHz
4KHz
STC

15
17
21
28
34
37
 27
17
21
24
32
34
36
 30
Temperature Range -40C to +121C
-40F to +250F
-40C to +121C
-40F to +250F
Thickness 3/8" 1/2"
Weight (per sq. ft.) 1 lb 1 lb
Price (per sq. ft.) $5.18

(based on 40.5+ sq. ft.)

$13.06

(based on 24+ sq. ft.)

Definitions

Acoustic Loss Factor- a measure of the ability to reduce structural borne sound. It represents how much vibration related energy is absorbed by the material at a given temperature. Based on a linear scale of 0 - 1, with 0 being an undamped steel panel and 1 being a theoretically perfectly damped panel (no vibration). The higher the ALF, the more effective the material is. Also known as Damping Loss Factor (DLF)

Transmission Loss - the reduction in noise level resulting from passage through an obstruction at a given frequency. Sound transmission class (STC) is the overall measurement  of the effectiveness of a material to attenuate sound. Values are expressed in decibels and as such form a logarithmic scale. The higher the transmission loss, the more effective the material is.

Absorption Coefficients  - the amount of sound energy a surface absorbs and reflects at a given frequency. If we say that a surface material has an absorption coefficient of 0.25 we are saying that the surface will absorb 25% of the incident acoustic energy, while reflecting back 75% of the total acoustic energy at the specified frequency. The higher the absorption coefficient, the more effective the material is.

Dynamat® is a registered trademark of Dynamic Control of Dayton, OH.

B-Quiet® is a registered trademark of StereoTypes of Lethbridge, AB, Canada.

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