Here's why:
* CRT TVs do not have HDMI ports. CRT TVs use older video connection standards like composite (RCA), S-Video, or component cables.
* Xbox 360 has an HDMI output. The Xbox 360 supports HDMI for its video output.
To connect your Xbox 360 to a CRT TV, you will need to use an AV cable. This is a cable with three RCA connectors (red, white, yellow) that plug into the appropriate ports on the Xbox 360 and your CRT TV.
You can also find component cables for the Xbox 360, which provide a slightly higher quality picture than composite cables.