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hank alrich hank alrich is offline
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Default Sports Bar Hum Job Questions

Scott Dorsey wrote:

hank alrich wrote:

This is normal. SOME of it may be on the feed itself. Use a pair of
headphones and connect it to one of the RCA audio feeds and see if you
hear the hum. Also look for hum bars on the video.


Okay, gotta find an RCA adapter. Radio Shark, here I come.


You don't really need one, you can hold the tip and ring of the headphone
plug against the tip and shield of a male RCA with your hands for a couple
seconds. But it's handy to have one.


In this closet I'll take the adapter over trying to hold things in
place!

They have nine video receivers, four of which are hooked to the Onkyo
receiver.


How? Do they have RF coming out or baseband video? If it's baseband
video, is it going into any kind of distribution amp?


Okay, you understand I don't know squat about video. They have feeds
coming from dishes into the closet, into some kind of box(es) which then
feed the video receivers, which then feed the big Philps screens, all
that via coax. The video receivers have RCA outputs for audio, and those
are connected to the Onkyo receiver.

If you hear it on headphones and see noise on the video, it's time to
start tearing the satellite system and the video distribution system
coming out of it apart.


That'll be somebody else's job. g


Probably not. Video guys seem not to know anything about audio and most
of them seem clueless about grounding too...


Best Buy guys did this install, and juding from what I've seen of their
wiring work in the upstairs piano bar of this same place, I guess I'll
face getting some videoesque education on this one.

Thanks, Scott. Obviously, I'll be back here for more coaching.

Tomorrow I'll take the laptop as a source for groundloopless audio feed,
the headphones and adapter, the Fluke and these great replies, and go
down the list of moves from all the posts. Data gathering time.

--
ha
Iraq is Arabic for Vietnam