Splitters will reduce the signal strength with each one down the line. Try to reduce to as few splitters as possible without losing service to other devices on the same line. Try 4-way splitters as well.
Original S1 (Recycle Heaven)
Series 2 (PLS, sold)
TiVo HD (XL, PLS, "652")
Juliet Basic (4XL, PLS)
The TiVo Apocalypse begins on Sat 2013 Feb 16 00:00 GMT!