I have a pair of bose 901's (series 4) speakers that need re-foaming. I am looking for recommendations. found 2 types of re-foam kits online, one is original "m" foam kit the other is a "lifetime kit" made with a cloth surround that they claim is used in the new Bose professional speakers (bose 802's ??). I like the long life aspect of the cloth kit, but will it affect the sound in these older speaker?? also has anybody done this job without removing the dust caps and using shims?? one company recommends this method while another company says its not necessary. once these speakers are repaired they will be used in my small apt. and cannot hang/mount them as per Bose's recommendations. anyone tried listening to these speaker turned around (multi drivers facing forward, single speaker facing rearward)?? thanks for the info
peter