Jump to content



Sign up for a free account to remove the pop-up ads

Signing up for an account is fast and free. As a member you can join in the conversation, enter contests and remove the pop-up ads that guests get. Click here to create your free account.

Photo
- - - - -

Center Speaker sitting directly on RPTV?


This topic has been archived. This means that you cannot reply to this topic.
7 replies to this topic

#1 of 8 OFFLINE   Brian David

Brian David

    Auditioning



  • 14 posts
  • Join Date: Mar 08 2003

Posted May 05 2003 - 08:22 AM

If anyone could tell me if this is permissible, I'd appreciate it!!!
My center channel speaker is a JBL S-Center (weighs 15lbs). It will be sitting on a Panasonic RPTV (PT-51HX42).
I am just concerned about damage to the picture quality, vibrations and the weight of the speaker directly on the TV itself...
Thanks for the input!
-brian

#2 of 8 OFFLINE   Bob McElfresh

Bob McElfresh

    Producer



  • 5,183 posts
  • Join Date: May 22 1999

Posted May 05 2003 - 12:38 PM

Not usually a problem. My DefTech center (about 25 lbs) sits just fine on mine.

Suggestion:

- Get rubber door-wedges to make "feet" and give the center speaker some downward tilt. Having the speaker point right at your head is desirable. Pink rubber erasers, wheelbarrow innertubes and even paper-back books have all been used with great success. Just get the speaker body up off the TV cabinent to avoid vibration issues.

- Pull the center speaker FORWARD so it over-hangs the TV face by about 1/4 inch.

Hope this helps.

#3 of 8 OFFLINE   David Materazzi

David Materazzi

    Extra



  • 17 posts
  • Join Date: Apr 23 2003

Posted May 05 2003 - 04:04 PM

I bought a 60" widescreen a few months ago. I put my center speaker on top and it didn't seem to have any problems. Recently I built a bridge that connects my 2 cabinets over my widescreen and now I have my center speaker on that. Also using it to display knick-knacks.
Now, my aunt and uncle had their center speaker on top of their 31" tv and it discolored the top of the tv. I don't know why. I'm thinking it was the heat of the tv being trapped under the spaker to cause it.
I don't know about any of your systems but my speakers don't throw off any heat. I told them to remove the center and build some kind of shelving above the tv.

#4 of 8 OFFLINE   Glenn Overholt

Glenn Overholt

    Producer



  • 4,207 posts
  • Join Date: Mar 24 1999

Posted May 05 2003 - 07:00 PM

What your aunt and uncle need is some aluminum foil! - The speaker that they are using is not shielded, and so the magnet on the speaker is causing their TV screen to mess up, because it is driven by magnets too.

It might work if they place some folded up foil between the speaker box and the top of the TV, or even better would be to put the foil as a liner inside of the speaker box (and securing it so it won't get loose and connect the wires inside) - or they could just buy a speaker that is listed as a shielded speaker, and not an unshielded one.

Glenn

#5 of 8 OFFLINE   Michael Reuben

Michael Reuben

    Studio Mogul



  • 21,769 posts
  • Join Date: Feb 12 1998

Posted May 06 2003 - 01:23 AM

I second Bob McElfresh's excellent suggestion, but let me add one more:

After you've tilted the center speaker and pulled it forward, make sure that it's still securely in place. Use rubber feet, velcro, or some other means to ensure that vibrations don't cause it to slip forward and fall off the TV. I wasn't careful about this, and it cost me a new center speaker.

M.
COMPLETE list of my disc reviews.       HTF Rules / 200920102011 Film Lists

#6 of 8 OFFLINE   Mark Shannon

Mark Shannon

    Screenwriter



  • 1,991 posts
  • Join Date: May 27 2002

Posted May 06 2003 - 08:00 AM

Quote:
What your aunt and uncle need is some aluminum foil! - The speaker that they are using is not shielded, and so the magnet on the speaker is causing their TV screen to mess up, because it is driven by magnets too.

I have one question...(not that this pertains to me, but in general)

does a RPTV work on the same principle, whereas if a powerful enough magnet were placed on the edge, would the same discolouration occur as with a Tube television?

#7 of 8 OFFLINE   Michael Reuben

Michael Reuben

    Studio Mogul



  • 21,769 posts
  • Join Date: Feb 12 1998

Posted May 06 2003 - 08:39 AM

Yes, a powerful enough magnet will distort an RPTV. It's usually not a big issue with center speakers placed above the screen, because the relevant electronics are farther from the top edge than in a typical tube set.

Now floor-standing subs are another thing . . .

M.
COMPLETE list of my disc reviews.       HTF Rules / 200920102011 Film Lists

#8 of 8 OFFLINE   Jon Gum

Jon Gum

    Stunt Coordinator



  • 58 posts
  • Join Date: Jul 26 2002

Posted May 07 2003 - 06:15 AM

Brian -

You should be OK. I have a 57" Hitachi and I called them specifically on this issue as I was trying to figure out where to put a 35lb center (Boston VR-12). They recommended the max weight for 57" at 15 lbs. As it looks like you have 51" (or is it a 42" - sorry I am not familiar with the Panny TV's), you should be fine.

If you do a search on this topic you will find that some people have wrapped the top of their sets by putting stuff on top of them. If you are nerveous about it, one of the recommendations that I liked was to get a piece of MDF and cut it to fit the top of TV. Wrap it in matching felt or paint it and put the speaker on that. In this manner, the weight of the speaker is more evenly distributed across the top of the TV.

Good luck,
Jon