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Main => Main Forum => Topic started by: UncleMame on May 12, 2011, 10:24:44 pm

Title: Light coming through speakers
Post by: UncleMame on May 12, 2011, 10:24:44 pm
Does anyone have any good suggestions for eliminating light coming through the speaker areas from the marquee light (Cloth kind of works, but still not great) - I am also afraid of plugging up the area too much and muffling the sound) - Any ideas ?

I also was wondering if other folks had issues with one part of the marquee lighting REALLY well(in the center), with the edges looking a little dim - Any suggestions there ?

Thanks ! ;)
Title: Re: Light coming through speakers
Post by: leapinlew on May 12, 2011, 10:56:57 pm
Could you prevent the light from coming from the marquee box to the speaker area?
Title: Re: Light coming through speakers
Post by: nick3092 on May 12, 2011, 10:57:28 pm
You could try speaker baffels for car speakers to block light. Try Crutchfield. I don't know what they will do to the sound.
Title: Re: Light coming through speakers
Post by: DeLuSioNal29 on May 12, 2011, 11:04:53 pm
I usually cut a piece of an old black T-Shirt and use a staplegun to cover the hole from the inside of the cabinet (inside the marquee area).  Then I install the speaker over it, sandwiching the cloth to the wood.  Finally, to cover any imperfections of light leaking anywhere else I use Weatherseal tape, the kind you would use on edges of a doorway or window.  They vary in size and are great for blocking light, especially on the edges of the marquee.  You simply use the self-adhesive tape to line the edges from the inside.

DeLuSioNaL29
Title: Re: Light coming through speakers
Post by: JustMichael on May 12, 2011, 11:28:34 pm
If there is no power near, try aluminum foil.
Title: Re: Light coming through speakers
Post by: BadMouth on May 13, 2011, 09:12:47 am
xtc speaker baffles (from crutchfield or fleabay)
(http://di102.shoppingshadow.com/images/di/7a/64/36/4b7a42734a697a4574632d4a754564755f4b51-149x149-0-0.jpg)
Title: Re: Light coming through speakers
Post by: sapro on May 13, 2011, 09:30:14 am
... or duct tape around the speaker, sealing it against the inside of the cabinet (unless the light is physically shining through the speaker itself??)
Title: Re: Light coming through speakers
Post by: bkenobi on May 13, 2011, 11:31:54 am
Duct tape will eventually let go.  I'd use something else if it were me.
Title: Re: Light coming through speakers
Post by: Malenko on May 13, 2011, 11:38:15 am
+1 to the black Tshirt
Title: Re: Light coming through speakers
Post by: DNA Dan on May 13, 2011, 11:49:24 am
Use black silicone. Can easily be squeezed into cracks, and if you need to pull the speakers its fairly removable.
Title: Re: Light coming through speakers
Post by: Donkbaca on May 13, 2011, 11:52:48 am
Quote
Use black silicone. Can easily be squeezed into cracks, and if you need to pull the speakers its fairly removable.

+1
Title: Re: Light coming through speakers
Post by: BadMouth on May 13, 2011, 11:56:17 am
Use black silicone.

-1  The gas silicone emits as it cures contains an acid that can eat away at foam speaker surrounds and weaken them.
     It can be used, but make sure the area is well ventilated until the silicone is fully cured.
Title: Re: Light coming through speakers
Post by: DNA Dan on May 13, 2011, 12:02:30 pm
Well that's good to know. I was just about to do this to my install this weekend. Thanks! :applaud:
Title: Re: Light coming through speakers
Post by: Vigo on May 13, 2011, 12:12:24 pm
I don't think a bit of black latex weather caulking would do much harm though....
Title: Re: Light coming through speakers
Post by: brad808 on May 13, 2011, 12:32:13 pm
I was always told if you can't fix it with duct tape and wd-40 then you didn't use enough.


This is a time for duct tape :cheers:
Title: Re: Light coming through speakers
Post by: Cynicaster on May 13, 2011, 02:14:47 pm
This is probably of no use to anybody unless they happen to be using the same approach as me, but I’ll put it out there anyway. 

I had this same problem and it was driving me nuts.  My speakers are just PC speakers mounted on brackets behind the speaker panel.  I cut ugly rectangular holes in the panel to allow the sound to pass freely.  I cover the holes with speaker grilles that attach with magnets.  The grilles I made simply by cutting rectangular frames out of ¼” plywood, and stretching some adhesive-backed felt ($1 per speaker at a local crafts store) over the openings. 

It worked great, but the felt wasn’t thick enough to block the light from the marquee area.  What I ended up doing was just taking the leftover felt and sticking it on the underside of the grilles to double up the thickness.  It did the trick, and there is no noticeable degradation of the sound.
Title: Re: Light coming through speakers
Post by: leapinlew on May 13, 2011, 02:22:44 pm
What about those of us who have problems with speakers coming out of our lights?
Title: Re: Light coming through speakers
Post by: Donkbaca on May 13, 2011, 02:23:49 pm
Quote
What about those of us who have problems with speakers coming out of our lights?

Duct tape and more (less?) whisky will usually fix that...
Title: Re: Light coming through speakers
Post by: gryhnd on May 13, 2011, 03:20:32 pm
I ended up using a double layer of black weed fabric stapled down over the speakers. Total light blockage :-) Sound was not affected to any extent that I noticed.
Title: Re: Light coming through speakers
Post by: Vigo on May 13, 2011, 03:23:03 pm
heh. weed fabric.  :afro:
Title: Re: Light coming through speakers
Post by: bkenobi on May 13, 2011, 05:06:17 pm
And as a bonus, you don't have to worry about dandelions either!
Title: Re: Light coming through speakers
Post by: gryhnd on May 13, 2011, 08:05:24 pm
heh. weed fabric.  :afro:

Smoke 'em if you gottem.  :drool
Title: Re: Light coming through speakers
Post by: UncleMame on May 13, 2011, 09:47:53 pm
Thanks for all the help guys!  LOL bkenobi - dandilions!   I was thinking the same thing! +1 there! :laugh:
Title: Re: Light coming through speakers
Post by: RandyT on May 15, 2011, 05:48:36 pm
You can probably do something that helps both of your issues at the same time.  If you have the clearance, put a reflective, but opaque panel (light baffle) in place which isolates the marquee compartment from the speaker area.  Avoid black, as black will absorb light, and you want it to reflect around in your newly isolated marquee area to help illuminate your marquee more evenly.  The best material for the baffle would be mirrored plexi, but some shiny, white masonite material would probably work well too (white side up).  Also, painting the sides of the cabinet a nice glossy white in the marquee area will help as well.

The blue line is the light baffle in the illustration below;

(http://www.groovygamegear.com/lightbaffle.jpg)

RandyT
Title: Re: Light coming through speakers
Post by: UncleMame on May 16, 2011, 12:04:05 am
Thats a great idea, but I already painted the cab black during the construction......But I'll try and look for reflective plexi - Thanks!