KEF 104 - 104ab B139 SP1042 'PASSIVE' ABR BASS UNITS £12.00

Kef B139 SP1042 'Passive' (Non powered) ABR (Auxiliary Bass Radiator)
This is a regular B139 bass driver with the magnet removed (Never fitted), to act as an ABR
Original used KEF part pulled from a pair of 104/ab speakers
The 'Spiders' look to have distorted unevenly from the normal but still hold central
This is certainly NOT the issue it might have been had it been running a magnet and voice coil!
Still performing well and working as they should with nice clean fronts with no heavy damage
(Spider function mainly to centralise Voice Coil in Magnet so not really an issue here)

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