|A 25 foot range could be correct with less capable wireless routers. The best way to test this is to move the router closer to the television if possible. Moving it only a few feet can make all the difference. |
A range extender is an option but as pointed out already it will affect your connection speed considerably so probably not ideal.
I myself use an Ethernet Over Power (EOP) solution for this very reason. I get decent enough speed that I can send Bluray quality information through my homes electrical wiring to any room in the house without issue. I currently have three separate rooms in the house accessing my router at decent speeds.
Something like this would be ideal:
You can get these that will give you 500 and even 600 Mbps speeds if you need it.