I got one of the new GP7's from my LHS last week and put in a Soundtraxx sound decoder in it( part # 828020). This is the board style with built in keep a live caps. I took off the top part of the frame and milled out a slot for the caps to fit into since the board had to be mounted upside down. I replaced the LED's with golden white ones since the ones that came with the engine were orange. I put a 1" speaker in the fuel tank opening(thanks Bachmann for this feature). The engine runs and sounds great.  Joe   

I just bought a GP7 with DCC on board and am putting a sound decoder in it. I read in MR the review on it and says it takes a 28mm speaker. I tryed to install one and it seems too big. I tryed a 1'' speaker as well and can't get either one to seat far enough in the whole to get the fuel tank cover to seat properly. I installed with the cone faceing down. Is there some thing I'm missing? Thanks.  Joe 

Hey MR.Bachmann, how about some Great Northern paint schemes for the GP7/9,RS3 and F7A/B units?  Joe

Are the F7A&B N Scale Spectrum locos DCC ready or friendly? IE easy to convert to DCC. Thanks.  Joe

Dear Yardmaster, does Bachmann have any undecorated bodies for the GP7 or GP9 available?  Thanks.
Joe.

Is there a chance Bachmann will expand the line of value added sound loco's? /Maybe the RS3's and GP7/9? Thanks.

Do the Bachmann HO RS-3's have a space in the fuel tank for a speaker like the GP7/GP9's do? I'm thinking of getting 1 or 2 of them but want to add sound. Thanks for any help.