Zeb1

Video Quality isn't great but this is the 645 chip will the double I phone speaker...U can really notice it in shut down sequence...believe me its alot better in the flesh than the video.Well done murphys models the difference in sound between the 567 and the 645 can be seen...the 645 has a much deeper rumble... 20210105_172441.mp4 I should have said heard and not seen.....

Here is the install of a double I phone speaker in a 121...Remove 4 body screws and remove loco body...remove 4 screws securing pcb board.take out sugarcube speaker...cut away front 2 lugs for securing pcb and file flat the ones nearest the grill..tin the 2 pads that were the spring connection for the sugarcube speaker..attach thin wire to the tinned pads...I phone speaker just fits snug under pcb..Replace the back 2 screws on pcb...GENTLY replace body feeding wires up each side of body as being replaced..Care needs to be taken on the grill end for the 2 coolant filler pipes while body being replaced....they can catch off the body and break...I gave mine a little pinch inwards before I started...also make sure led marker lights are in position before putting body on...Good luck...

I'm fitting one in 124 during the week...Ill put it up then.. knowing my luck if I go to take the body off one of the ones I've done so far ill end up breaking some of the small details....lol...Air horns,handrails and vacuum pipes seem to need the gentle gentle approach..

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If you remove the body..and remove the 2 screws on the fan end of the pcb it will just slide underneath.its the 40mm long i phone speaker by roads and rails i use...the sugar cube speaker just pops out and solder speaker wires to the 2 contacts...you can see the speaker thru the side grills but that's OK in my opinion...

Sound wise would be very similar but I've taken the sugar cube speakers out of my 121s and used double i phone speakers...made one hell of a difference to sound quality and clarity with no distortion..