I have a new HDTV connected to a new PC via HDMI cable. Note that both ends are HDMI connectors (e.g., no VGA -> HDMI conversion cable, etc. is used. The HDTV alternating (not simultaneous) serves as both the monitor for the PC and for cable TV viewing.
I also have a Cyber Acoustics CA-3001 3-Piece Speaker Set. It has the standard one green 3.5mm male connector. When plugged into the PC's standard green speaker/headphone port, the new speaker set works just fine when using the PC (as expected). If disconnected, by default, the HDTV's internal speakers work instead when using the PC (as expected, since ALL audio and video signals are being transmitted via the HDMI connection).
I plan on getting a 3.5mm Stereo Female to RCA Male Y-Cable in order to instead hook-up the new speaker set to the HDTV (which has the appropriate RCA connectors) to serve as speakers when viewing cable TV.
QUESTION: Can I safely presume with the new speaker set serving as speakers for the HDTV (after hook-up via the Y-adapter) that they will be the active speakers regardless of whether I'm using the HDTV in PC or cable TV viewing mode?
Common logic tells me I'm 90% certain the answer is yes. However, I'd rather avoid spinning-my-wheels getting a Y-Adapter if it isn't going to produce my desired result, and instead get a multi-port A/V switch.
Any and all replies providing answer/advice are sincerely appreciated.