2 speaker set up for soundtraxx

nw-modeling-list at nwhs.org nw-modeling-list at nwhs.org
Thu Apr 14 08:53:23 EDT 2005

I have found that many laptop speakers will be usable for HO sound 
systems.  They have low impedances and come in a bunch of sizes.

Mark Lindsey

On Apr 13, 2005, at 3:24 PM, nw-modeling-list at nwhs.org wrote:

>  On 4/10/2005, John Rhodes asked:
>  Kert,What size speakers did you use and how did you do it?
>  John,
>  I used two 1" round speakers.  One speaker is mounted under the coal 
> load, firing up though holes drilled in the coal load (No. 75 drill), 
> with the second speaker mounted in the bottom of the tender, firing 
> down through holes drilled in the floor of the tender (carefully 
> missing key components).  I wired the speakers in parallel as shown in 
> the SoundTraxx tech note on the wiring multiple speakers, which is 
> found on the SoundTraxx website:
> http://www.soundtraxx.com/dcc/docs.html#TECHNICAL%20BULLETINS
>  I solder a small plug into the power connections from the DSX so that 
> I can program it separately and not have any conflicts with the TCS 
> decoder that I use for motor control.
>  When I wire my next one, I will probably use small oval speakers 
> instead of round ones.  Either will fit.  Using two speakers makes the 
> fit really tight inside the tender, and I am not sure there would be 
> enough space inside the shorter tender.  Thankfully, the TCS T-2 
> decoder I use for motor control is really small. (If you use the T-2, 
> get the T-2P which comes with the short harness for the P2K 
> locomotives.)  There are other small decoders you can use for motor 
> control, I just happen to really like the TCS decoders.
>  Hope this helps.
>  Cheers,
>  Kert Peterson
>  Fircrest, WA
> Modeling the Norfolk and Western Ry in 1951, when Precision 
> Transportation was still steam powered!
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