Originally Posted by
snoopy751
Thank you for all the replies, appreciate
Ok thats what has happened, I bought this pair of 4315 from eBay, and got delivered few days ago.
After a listen I realised there was no bass from a speaker, so I took it out and have a test with multi meter, and the impedance reading was normal.
Finally, I brought to a shop in Sydney, called Speaker Hospital, and the guy was well experience and told me that, the 2203A was actually fine, however, might be due to the transportation, the paper cone got stuck and could not pop up, and he reckon the previous owner's reconing and reforming were done poorly, which caused the problem.
Therefore, they will recone both 2203A and replace the surround spider, disassemble and clean. Hope it works.