Damping Material

Audaphon puffy polyester fleece
Enlarge The polyester fleece has good absorbent properties, applicable without whirling up dust and fibre. Sonofil consists of a mixture of polyester fibres - it's not flame-retardant. Heat resistant up to 140 degrees Celsius. For each 20 cdm (litre) cabinet volume 1 to 1.5 packets are needed; 1000 mm x 350 mm x 20 mm. Colour: white

Price per unit   (Order No str-sonofil) EUR 3,30 excl. VAT: € 2.77 / $ 3.11
 

Pure sheep's wool

If you prefer natural fabric: Visaton sheep's wool with good damping properties. For each 20 cdm (litre) cabinet volume 1 to 1.5 packets are needed. Packaging and size is the same as with Sonofile, but double thickness.

Price per unit   (Order No V-5069) - not available
 

Bondum 800 damping

Bondum 800 is a material damping frequencies above 800 Hz. Measurements: 300 x 500 x 20 mm

Price per unit   (Order No I-3325) EUR 3,90 excl. VAT: € 3.28 / $ 3.67
 

Tyrofoam

Enlarge Tyrofoam, a heavy, high damping foam to absorb airborne sound, for lining the interior walls of a loudspeaker cabinet. Weight / volume: 140 kg / cubic metre.

Type Tyrofoam SG140/10 Tyrofoam SG140/30
Order No. I-3346 I-3347
Thickness 10 mm 30 mm
Dimensions 245 x 325 mm 245 x 325 mm
Price per unit   EUR 1,50 excl. VAT: € 1.26 / $ 1.41   EUR 4,40 excl. VAT: € 3.70 / $ 4.14

 

Bitumex
Enlarge Below: heavy, high damping bitumen board for reducing structure-borne noise of loudspeaker cabinets and other vibrating surfaces. Single-sided self-adhesive. Weight / volume: 1.800 kg / cubic metre.

Type Bitumex FG 2 SK Bitumex FG 4 SK Bitumex FG 6 SK
Order No. str-bitum25 I-3345 str-bitum6
Thickness 2 mm 4 mm 5.5 mm
Dimensions 245 x 325 mm 245 x 325 mm 245 x 325 mm
Price per unit   EUR 3,40 excl. VAT: € 2.86 / $ 3.20   EUR 4,70 excl. VAT: € 3.95 / $ 4.42   EUR 4,90 excl. VAT: € 4.12 / $ 4.61

 

Needle and wool felt

Nadelfilz Needle felt (left) and woo felt (same appearance, but denser) suitable for lining interior cabinet walls.

Type Needle felt NF10 Needle felt NF20
Order No. fz-NF10 fz-NF20
Thickness 10 mm 20 mm
Dimensions 400 x 1000 mm 400 x 1000 mm
Price per unit   EUR 10,60 excl. VAT: € 8.91 / $ 9.98   EUR 19,90 excl. VAT: € 16.72 / $ 18.73

 

Damping 10

Recycled felt self adhesiv.

Type Damping 10
Order No. 139 9014
Thickness 10 mm
Dimensions 970 x 470 mm
Price per unit   EUR 18,90 excl. VAT: € 15.88 / $ 17.79

 

Tyrotex

Enlarge Tyrotex Soft polyurethane foam based on polyester.

Type Tyrotex N20 Foam N25 Foam N25/3
Order No. I-3338 py-n1054a py-n1053a
Weight/Volume 20 kg/m3 25 kg/m3 25 kg/m3
Thickness 42 mm 40 mm 30 mm
Dimensions 500 x 1000 mm 500 x 1000 mm 500 x 1000 mm
Price per unit    - not available (_)   EUR 7,90 excl. VAT: € 6.64 / $ 7.44   EUR 6,80 excl. VAT: € 5.71 / $ 6.40

Absorption according to DIN 52221

Absorption according to DIN 52221
Typ / Freq. 125 Hz 250 Hz 500 Hz 1 kHz 2 kHz 4 kHz
N20 0,11 0,32 0,63 0,90 0,91 0,95
N30 0,16 0,54 1,01 0,99 1,01 1,02