View Full Version : RCA connectors


kodagroup
07-24-08, 09:04 PM
Hi,

I am confused between the difference of a RCA digital connector. Such as a RCA connector for your subwoofer, which gives audio signal. Compared to the audio- video composite jacks, red and white. Also component cable, could that be used for the RCA digital connector for your subwoofer? They all look the same, it is usually a RG59 with a RCA connector, so what is the real difference? Thanks.

Tulpa
07-24-08, 09:15 PM
The connectors themselves (the end plugs that go in inputs and outputs) are all the same. They're just color coded for their intended uses to make connections easier (so the proper input is with the proper output.)

You can use the 75ohm cables for just about anything. Subwoofer, digital coaxial audio, composite video. If you look at the link below, they advertise the RCA coaxial cable for all three. A component video cable is just three of them joined together, but you can use three separate cables (provided the one intended for red goes to red, green to green, blue to blue, etc.)

http://www.monoprice.com/products/subdepartment.asp?c_id=102&cp_id=10236

Some of your analog audio cables (red/white) aren't 75ohm, so they shouldn't be used for digital audio or video, but they can work for subwoofers.

kodagroup
07-24-08, 09:30 PM
Thank You for the link, Mono is great. So you are saying any rg59 or rg6 cable with a RCA adapter can be used for composite connections, componet connections, and digital audio?
Do you know what kind of cable is in a composite red, white line. Can this be used for subwoofer also? Or, do you need one with rg6, rg59? I am just a little confused when some people use the term 'digital cable'. I thought I had to go and get different cables.

Tulpa
07-24-08, 09:33 PM
Monoprice uses RG59, according to the site. I think even their analog audio (red/white) are coaxial 75ohm, just like the video/digital cables, but not everyone makes it to that standard. I don't think those cheapie/freebie red/whites that you get with some DVD players are up to the task of the better cables, although the yellow ones probably are.

Digital in regards to audio like SPDIF used with DVD players/receivers and such is just the method of transfer. It doesn't care that it uses the same cable a subwoofer or a composite video signal uses. It can even go down fiber optics, i.e., TOSLink.

kodagroup
07-24-08, 09:35 PM
Hey,
After reading your reply again, I think you have answered my questions. I know the difference now. I didn't read the bottom of your reply the first time. Thank You Tupa....

kodagroup
07-24-08, 09:37 PM
Sorry *Tulpa

tsteves
07-25-08, 06:48 PM
You should stick with a component video cable for component video, or at least make sure the lengths match. Kind of a no brainer distinction, but I'm just saying that for instance, using three different length RG6 cables with RCA adapters for component video, could cause some delayed signal distortion.