2x Universal Foam Loud Speaker Port Bungs 35mm Diameter x 40mm Height

Speaker Bungs are cylinders made from high quality open cell type foam. Simply insert them into your rear speaker ports.

Speaker Bungs can be used to tune your speakers to the room by changing the frequency response. Results will vary depending on the speakers and where they are located, but generally, our Speaker Bungs will reduce bass boominess, and are most effective when speakers have to be situated closer to the wall than is desirable.  

Size can vary by 1-2mm, so we recommend choosing a size a few mm larger than the diameter of your speaker port hole. A larger bung can be made to fit, but a smaller bung will just pop out, so if in doubt, go for the larger size, or please message us with measurements and we will advise. 

UK made 

Free UK Standard P&P 

Full range available in our eBay Store: 

(please contact us for other quantities or sizes)

35mm x 40mm
35mm x 40mm with removable middles
40mm x 40mm
40mm x 40mm with removable middles
45mm x 40mm
45mm x 40mm with removable middles
50mm x 40mm
50mm x 40mm with removable middles
55mm x 40mm
55mm x 40mm with removable middles
60mm x 40mm
60mm x 40mm with removable middles
65mm x 40mm
65mm x 40mm with removable middles
70mm x 40mm
70mm x 40mm with removable middles
75mm x 40mm
75mm x 40mm with removable middles
80mm x 40mm
80mm x 40mm with removable middles
90mm x 40mm
90mm x 40mm with removable middles
95mm x 40mm
95mm x 40mm with removable middles
105mm x 40mm
105mm x 40mm with removable middles
105mm x 45mm