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perforated grill - hole size and pitch

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Danny A View Drop Down
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    Posted: 21 January 2017 at 6:44pm
Hi, I need to get some grills made for some subs and I was wondering what the best hole size and pitch of perforated steel is to use.

The material I have found is 6mm hole, 8.5mm pitch which equates to an open area of 45%

will this be enough open area? I dont want to mess the tuning of the box up.

cheers


Edited by Danny A - 21 January 2017 at 7:00pm
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krazyneil View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote krazyneil Quote  Post ReplyReply Direct Link To This Post Posted: 21 January 2017 at 7:24pm
best off speaking to markie he will supply what you need
GOD TOLD ME TO DO IT !!!!!
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Post Options Post Options   Thanks (0) Thanks(0)   Quote markie Quote  Post ReplyReply Direct Link To This Post Posted: 23 January 2017 at 4:03pm
You will lose a bit of top end going to 45% open area but it's not drastic. The other consideration is the larger the hole the greater the chance some clown has something in his pocket that he can poke thru the cone.

I use 4mm hole 5mm pitch which gives open area of 60%+.

Just re-read the OP. If it's for subs the top end loss won't be a consideration but you still have to consider the  punters with pokey implements, particularly as the subs will be on the floor and not easily visible when you're working.


Edited by markie - 23 January 2017 at 4:07pm
If it's got wheels or tits it's gonna cost a fortune
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