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Installing Railmaster Speaker in HO Atlas GP7

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  • Member since
    September 2006
  • 776 posts
Installing Railmaster Speaker in HO Atlas GP7
Posted by wabash2800 on Sunday, December 12, 2010 7:07 PM

I am trying to install the Railmaster Bass DSM8 which is supposed to fit in narrow hood units. Even though I cut the lugs off and removed the headlight and number board inserts I can't get it to fit. I am using the Soundtrax TSUAT1000 that is plug and play for the Atlat GP7 and snaps onto the Atlas lugs on top of the motor.

I can get the speaker  to fit in the shell but there is not enough vertical clearance to get the shell back on the frame...

I can put the numberboards in without the headlight inserts as was planning to use surface mount LEDs for the headlights anyway.

Has anyone had success with this application? I refuse to take out one of the flywheels. I think I must need a smaller speaker or perhaps the Tsunami board will have to be moved forward and the Atlas lugs that would normally snap in teh TSU board will have to be cut off to make the TSU board lie lower? Perhaps my problem is in trying to get the plug and play board to work with this speaker-- either use a smaller speaker or move the TSU board, or get a smaller Tsunami decoder to allow enough room for this speaker?

  • Member since
    February 2002
  • From: Mpls/St.Paul
  • 13,892 posts
Posted by wjstix on Wednesday, December 15, 2010 9:35 AM

Without knowing exactly what the speaker and enclosure you're using look like, you should be able to fit a 1/2" by 1/4" oval speaker into an Atlas GP. I have a couple GP-7s that use board-replacement decoders. I generally remove the rear light bar (actually trim it so there's just a bit of it there) and put the speaker fairly far back inside the long hood facing down. It can be a snug fit so you might have to push it into place before reassembling the engine. Usually you can get it to work thru a little trial and error.

Stix
  • Member since
    September 2006
  • 776 posts
Posted by wabash2800 on Wednesday, December 15, 2010 11:51 PM

Thanks. I've got it figured out. I am still going to use the narrow rectangular Railrmaster speaker since it is a darn good on. I just have to cut off the studs used to snap the soundtraxx deoder n and move it forward. The speaker will go in the back face up.

  • Member since
    December 2007
  • 993 posts
Posted by hobo9941 on Thursday, December 16, 2010 12:04 AM

Plug and Play is a bit of a cruel joke.Whistling

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