no,no,no dont do it. I have a 20 month old who sleeps right about a M&K Sub and 2 x DSP 5000's plus centre.
He sleeps through every movie going including POD race at volumes of 72-78 on a 568v2.
Make noise while they are young, the babe probably sat through movies whilst in mummys tummy so will like the sounds.
When they are ill you proabably have to kay off a little with the movies but other than that no problem.
If the WAF or you need the money then said to hear it other than that keep them,
just my experiences