Three decoder companies I am familiar with have pages for sound installs.
TCS and SoundTraxx.
LokSound has very good sound decoders and out of Germany.
I have used SoundTraxx and LokSound decoders.
http://www.soundtraxx.com/choose/step1.php
http://www.tcsdcc.com/Customer_Content/Installation_Pictures/HO_Scale/WOWSound_Search/search.html
http://www.esu.eu/en/start/
Rich
If you ever fall over in public, pick yourself up and say “sorry it’s been a while since I inhabited a body.” And just walk away.
Welcome to the forum.
More infomation is better. Is it this Bachmann 4-4-0
If no one here can help you, there is an active Bachmann forum You can also do a google search of sound installation On3 bachmann 4-4-0 if that is your loco
Henry
COB Potomac & Northern
Shenandoah Valley
Hallo. from the Neherlands.
I have bought a ON30 loc from Trainworld. A 4-4 DCC , without sound.
What do I need to buy to make it speek.
There is room for the speaker in the tender. but the loc is not ready for sound.
Like to hear from you.
Thanks, Jan.