Newbie question about 12" horn |
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Cookie
Registered User Joined: 06 May 2009 Status: Offline Points: 25 |
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Posted: 06 May 2009 at 5:47pm |
smithshorn
Registered User Joined: 08 February 2007 Status: Offline Points: 253 |
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The speaker hole is round, and mounts behind the horn flare. Take a look at these plans. Similar for a 15.
http://www.instant-automatons.com/technical/816cab.gif |
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darkmatter
Old Croc Joined: 26 February 2005 Location: LDN Status: Offline Points: 2425 |
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The hole isn't a full circle, it's just open where you can see the driver from the front.
Be careful if you're planning to use this as a kick cab above scoops - it won't play below 180Hz comfortably as the horn isn't big enough. |
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Cookie
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Thanks both of you.
What would you suggest to go low enough to meet 15" scoop with JBL 2226.
the high mid is sorted. I dont really want more 15"s.
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darkmatter
Old Croc Joined: 26 February 2005 Location: LDN Status: Offline Points: 2425 |
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Depends how many scoops you have, what mid tops you're using, and where you plan to use them.
What frequency range do your high mids play down to? What frequency do your scoops play up to? People will probably recommend dual reflex 15" if you're using 4-6 scoops inside. If you're using them outside or with more scoops it'll be worth thinking about horn loaded enclosures I imagine. |
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Cookie
Registered User Joined: 06 May 2009 Status: Offline Points: 25 |
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outside and in.
I have Dual 15" turbosound also . These dont get anywhere near my tops, they are 2" and 1" compression.
I have thought about it and listened without the low mid and think 12s will do it.
Just gonna get building. gonna use eminence beta 12. they say they go down to 50hz. That will meet subs and they go high so...
One more question please.
If beta 12 go down to 50hz spec . Can they not go that low depending on the box / horn they are in . Will the box design limit the performance or can it only improve its performance?
thanks
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darkmatter
Old Croc Joined: 26 February 2005 Location: LDN Status: Offline Points: 2425 |
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sorry i've lost you mate. not sure what your current setup is, so any suggestions would be a bit of a stab in the dark.
put the eminence beta 12 in a reflex box, not a horn loaded enclosure. use WinISD to work out required box volume and tuning. tuning the box to 70hz will mean the drivers can be pushed hardest in the required 90 - 350hz (?) range i.e. you can put a decent amount of power in without the driver exceeding excursion limits. they shouldn't need to go down to 50hz as your scoops are dealing with that range. Edited by darkmatter - 08 May 2009 at 2:39pm |
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