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kef 3005 help


Established Member
Just setting up these speakers, and above where the cables go in there is a piece of sponge in a hole , should this stay in or come out...
Daft question I know, but not sure..
Many thanks


Standard Member

I wondered the same when I got my 3005SE. A bit of research told me that the sponge is a port bung. I believe it's used to influence the bass levels i.e. you can take it out if you wish. For my setup I left this in but you can experiment if you wish. For more info search for 'port bung'.



Established Member
The port is used to vent the air displaced as the speaker cone moves as it's driven. Port bungs are used to prevent the 'boom' associated with placing the (rear) port close to a wall.

Depends on what you prefer, sound-wise with regards to removal..

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