I just wouldn't advise anyone who doens't exactly know what they are doing to do what goes a little beyond the rated manuf specs. I don't want to see any e-drama when the guy comes back and starts whining that his receiver is fried. Shit happens.
Bottom line is, if you know what you are doing and aware of possible consequences, sure go ahead and connect a 1kw sub to a 25w channel on the home amp lol.

if you say that "the tbass or whatever its called turned off", this means that the amp is probably not really reaching a real 1ohm load.

btw what exact speaker have you connected for a 1o load?