em1 sound

[litespan46]

just installed sound module in my em1, why do the speed curves used with cv25 run out of sync with the sound. also user defined speed curve does not work. i have 20 soundtraxx decoders and never had this problem. is there something i don't know about bachmann loco with tsunami decoders??

                gene

[Bucksco]

The locomotive needs to be set to factory default settings before installing the sound module. Perhaps a reset is necessary ?

[litespan46]

did the reset no change

[Bucksco]

Before installing the sound module?

[litespan46]

yep did it again this morning, removed sound module, reset engine cv8=8 resets to 3 installed sound module. same thing happened cannot program cv94 . and when use speed tables associated with cv 25 per soundtraxx full manual, i can put in the speed curve but sound does not match speed. i tried another em1 same thing happened, so there is a problem using the programmed speed tables (cv25) and user defined speed tables . this will make it impossible to speed match 2 or more of these em1s. i have no trouble speed matching other tsuname decoders . so the problem has to be in the bachmann decoder.

[litespan46]

mystery solved , looking at the soundtraxx website, in a blog comment BTW the bachmann 2 part decoders for the after 12/2011 have the cv2,cv,5,cv6 speed table to allow the user to set up a quick speed table. in order to use these cv.s cv29 can be set to a value of 6 for a 2 digit address or 34 for a 4 digit address this disables speed tables cv64-94 and allows the simpler 3 step table. i put in the values of 2 for cv2 , 180 for cv5 and 90 for cv6. definitely slowed the beast down. i think the chuff rate needs to be tuned up a little, seems too fast for me. i think bachmann needs to put this in their manual. cv 5&6 are not normal cv's in a non bachmann decoder. the list for all the cv's for the em1 does not show cv5&6

                    gene

[litespan46]

another look at list of cv's . cv5&6 for em1 they are listed . sorry bout the error