The sound deadening mat is 10mm thick, which is better than ordinary silencer cushions. The automotive sound deadener consists of three layers. The middle layer is high-density closed cell foam, which has excellent sound insulation properties.
eBay
2 Pcs 3.5 Inch Premium Car Ceramic Midrange Speaker High Rigidity Clear Sound Fit Most Cars Audio Upgrade
Aliexpress UK
This easy to install car sound deadening foam is ideal for roofs, doors, wheel arches, boot and parcel shelf applications. Sound deadening and thermal insulation foam for use within vehicle interior and exterior.
eBay
Premium 3-Way Car Audio Component Speakers with Crossover 6.5" Midbass Tweeter for Car Sound System Upgrade
Aliexpress UK
Manufacturer Part Number: SIFELT. SIFelt™ is manufactured sustainably in the UK and uses recycled thermoplastic in the composition of the sound and thermal insulation system. It is a fine fiber, low odour, low VOC and is 100% recyclable.
eBay
500W Loudspeaker High-End Audio Speaker Compact Size For Stable Sound Voice Box Car Audio System Dedicated Speaker Car
Aliexpress UK
1 Roll Sound Proof Foam Panels Self Adhesive 200×50×2cm,Egg Crate Acoustic Foam for Recording Studio KTV Bedroom Gym (1sq. m/10.76sq.ft). The rubber material is self-extinguishing when away from fire.
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4/5/6.5 Inch Universal Car Coaxial Speakers - HiFi Full Range Audio Subwoofer, Enhanced Bass Stereo Sound for Auto Automotive
Aliexpress UK
Perfect for camper vans, van conversions and vehicle restorations. With adhesive cotton insulation, it can be installed in any part of the car, such as doors, roofs, floors, hood, trunk room, trunk lid etc.
eBay
AIYIMA 1Pcs 3 Inch Midrange Sound Speaker 4 8 Ohm 30W Bullet Aluminum Ceramic Loudspeaker Car Modified Speaker For Car DSP DIY
Aliexpress UK
The unique specification chemistry of the synthetic butyl core effectively deadens panel vibration without the excessive bulk of competitor products. With high grade construction and effective damping, Mat is already the choice of many automotive professionals.
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Siren Speaker Air Horn 125DB Loud 6 Sounds Alarm Claxon 12V for Auto Car Motorcycle Boat Megaphone with MIC Digital Voice LB001
Aliexpress UK
Also suitable for speaker cabinets and many other applications. Car Roof Top Box 400 Litre Capacity Dual Side Open Gloss Red 75kg Luggage Travel. 1-10X sheets Damping Mat. For VW T5 T6 Window Glass Driver & Passenger Sliding 1130 570mm Pair left Right.
eBay
3.5-inch same point sound source mid-range speaker, car center speaker, car two-way three channel 3-inch mid-range speaker
Aliexpress UK
The sound deadening mat is 10mm thick, which is better than ordinary silencer cushions. The automotive sound deadener consists of three layers. The middle layer is high-density closed cell foam, which has excellent sound insulation properties.
eBay
2pcs 4Inch 1500W Titanium Bullet Tweeter with Capacitor Modified Vehicle Tweeter Sound Auto Music Stereo Loud Car Speakers
Aliexpress UK