I have a new old stock early PS 2.0 Genesis in which I am going to purchase a new green MTH 8.4 volt green battery to install. Before I power it up I need to check the Star speaker for the infamous metal flaking as not to fry the sound board. I removed the screws holding down the speaker but I am having trouble pulling the cardboard sound baffle up from the speaker(Is it glued to the speaker frame?). It is a downward facing speaker inside the loco btw.
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The speaker is not worth 25 cents. Why not just replace it. If you separate the cone from the frame you will destroy the speaker anyway.
Pete
At first glance, I thought you were trying to dissect the speaker cone!
If you are describing the black cardboard rear speaker baffle, then yes it is glued on and that glue seems very strong.
Norton posted:The speaker is not worth 25 cents. Why not just replace it. If you separate the cone from the frame you will destroy the speaker anyway.
Pete
I kind of figured it was glued. If I remove the speaker by the connection, will testing it with an ohm meter tell me if it is good or bad? If so what kind of reading should I get on a good 16 ohm speaker?
A 16 ohm speaker whould measure over 12 ohms, maybe 14. It will read lower that stated when fed with DC from your ohmmeter. When reading with an ohmmeter, try moving the cone with your finger. If there are metal flakes around the voice coil you should be able to feel them or you might see the ohmmeter flirt with zero if the insulation on the winding has been scraped off.
Pete
The flaking speakers had flakes all over the speakers. If you see ANY plating flakes on the speaker anywhere, I strongly suggest you simply replace it, don't wait for it to bite you in the butt!
gunrunnerjohn posted:The flaking speakers had flakes all over the speakers. If you see ANY plating flakes on the speaker anywhere, I strongly suggest you simply replace it, don't wait for it to bite you in the butt!
Thank you again John and everyone for the informative replies. Is a speaker baffle needed on the new Cuistack speaker? The MTH parts list for this Genesis shows the new brand of speaker(Cuistack), but it still shows the cardboard baffle/cone part number BF-0000011. I noticed the 2005 Walther's MTH phase V has no speaker baffle on top of it but it has a Star speaker?
Hear is the link to the MTH Genesis parts list for this engine:
Just glue the old baffle over the new speaker. For the genesis usually I loosen the smoke unit screws in the frame so it tilts over some. This helps free the baffle.
If the speaker is flaking it is not going to damage the audio amp. I have removed plenty of bad speakers with no ill effect. The deterioration of the metal just prevents the coil from vibrating properly to make clear sounds. It would take a shorted coil to damage the audio amp and that is not what is happening. G
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