mijknahs wrote:Don't recone the speaker unless it's blown. Just replace the dust cap with a new aluminum cap for the one that's ugly. You should be able to have it professionally done for $15 to $20.
Well sense Vin-Tone has been mentioned a few times in the forums I thought I might chime in. First to the above quote, replacing the aluminum dust cap on these speakers is no walk in the park. It is not a part that you can just go to Radio Shack and pick up. Furthermore the dust caps that are available are To Large. These are the ones you see in all the aftermarket kits, and on EBay. It will work in covering the old one but does not mount like the original. A big part of the function of the original part is how it is mounted. The larger cap just glues to the cone "WRONG" For the aluminum dust cap to preform it's intended function it has to mount to the top of the voice coil former.
Don't recone the speaker unless it's blown.
Unless you have a Original D-120 that has been in vacuum chamber for the last almost 50 years it "Can Not" sound the same as it did when it was new. These cones are Paper, Paper is dramatically effected by the environment. The glues used will also break down over time. "Most D-120's have been Beat To Hell" A speaker may even look perfect but in reality it is not. A speaker is a Electro-Mechincal device and to preform it's function properly it needs to be able to operate within the original parameters. A nearly 50 year old speaker can no longer do this. JBL Tech Bulletins use to state the average life span for Musical Instrument or Professional Products was estimated at 10-15 years in modest use applications.
Hopefully this information helps to clear up a few things. I will try and post more in the future.