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can a speaker grill be used over a port hole? (1 Viewer)

Joe Meissner

Stunt Coordinator
Joined
Jan 31, 2002
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204
I am building a sub and want to know if a grill should (could) be used over the port hole.? i want the port to be on the front baffle above the driver. I could flip that but i dont want this thing to be top heavy with little kids.
my problem is a 3 year old daughter that loves to put toys any place she can find. (like the vcr)boy did that eat some tapes before i could figure it out. :angry: plus i have a 9 month old that will soon be at that stage. plus she is starting to pull her self up on everything in the house.
will doing this hurt the bass output? i just never see anyone doing this. thats why i am asking
Thanks
 

Robert_Gaither

Screenwriter
Joined
Mar 12, 2002
Messages
1,370
SVS does it so I assume that it shouldn't hurt at all (of course you can make the port down firing and save a few bucks). The safest speaker for most kids is the sub (it's the only speaker I can think of that can't really fall on a child, at least none that I've seen; the sub safe from the kid... that's another story watch out for them poking it with objects pens, pencils, etc).

In another post (you stated about 3+ cubic feet, a driver than will most likely weigh more than 10 lbs, and you did state that you intend to use braces... I think you'll be lucky to keep the sub under 70 lbs and if you're kid can turn this over trust me she shouldn't be hurt by it) I think it was you that most of us were trying help design a sub trust me I seriously doubt that you're kid will get hurt by this sub unless you build it into the form of a slender tower with a top mounted woofer.
 

Kerry Hackney

Stunt Coordinator
Joined
Oct 18, 2000
Messages
206
SVS may have taken the loading into account. I have read articles that claim anything that obstructs the port loads it and changes the tuning. If you use a mesh grill the more open the better. I would not use a fine mesh or any type of cloth to cover a port... YMMV
 

Patrick Sun

Senior HTF Member
Joined
Jun 30, 1999
Messages
39,382
You can lose up to 1dB of output with something porous that covers the port (but in the overall scheme of things, a little less output outweighs the possibility of getting stuff falling inside the enclosure). :)
 

Patrick Sun

Senior HTF Member
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Jun 30, 1999
Messages
39,382
There's a first time for everything...but I doubt the cat can fit through a 4" wide flared port...
 

jeff lam

Screenwriter
Joined
Jun 4, 2001
Messages
1,798
Location
San Jose, CA
Real Name
Jeff Lam
Try the blowing air method. When I got my grill for my sub I wondered the same thing. I blew air into my hand to test, then I tried blowing air through the grill and into my hand on the other side of the grill. I couldn't feel much difference and I haven't noticed any different sound with my grill on or off. I'm using the mesh 8" style grill from PE.
 

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