said by clarknova:
So I'm wondering if somebody can recommend a better setup. Are filters known to be noisy? Is it the line splitter? Should I be using an actual DSL splitter that I've seen at some businesses?
Filters should not add any noise, they should actually reduce it.
You should have your DSL splitter as close to the demarc as practical, connect your home phone wiring to the filtered side of that splitter and run a separate wire from there for the modem.
If you have only 9dB at the demarc with the rest of the home disconnected though, I doubt there is much that can be done to help your case short of Telus rolling out a remote or FTTH in your neighborhood.