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HELP ElectrovoiceT-18 Design
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tb_mike View Drop Down
Old Croc
Old Croc


Joined: 01 October 2004
Location: New Zealand
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Points: 2744 		Post Options Post Options   Thanks (0) Thanks(0)   Quote tb_mike Quote  Post ReplyReply Direct Link To This Post Posted: 01 October 2004 at 9:02am
That t18 looks like a huge driver mounted on a very short horn-the horn might load about 50-60hz.

To add pics in the reply,they have to be hosted somewhere on the net . then try and see if it works.

Cheers!
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tb_mike View Drop Down
Old Croc
Old Croc


Joined: 01 October 2004
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Points: 2744 		Post Options Post Options   Thanks (0) Thanks(0)   Quote tb_mike Quote  Post ReplyReply Direct Link To This Post Posted: 01 October 2004 at 9:04am
As shown by the PDF file its 100db/1watt at 100hz and much lower at 50hz.Its not a horn as such. Bite the horn bullet and build a real huge effective horn!
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CHAMPION View Drop Down
Old Croc
Old Croc


Joined: 30 September 2004
Location: United Kingdom
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Points: 3667 		Post Options Post Options   Thanks (0) Thanks(0)   Quote CHAMPION Quote  Post ReplyReply Direct Link To This Post Posted: 01 October 2004 at 9:26am

Its more of a Half Horn enclouser, effictive tho,once i have loaded it with PD1850's!!! that will giv it more pressure,at the same time making it lighter to carry than a Full horn loadedcab. Four or six of them should be enuff 4 indoor venues, i have a Crown 5000vz amp sp that should power them oky.

Just need to build the things!!

Guys any sugestions on Bracing the internals, so that it will not fall apart wen loaded with PD's ???

What you think !!
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tb_mike View Drop Down
Old Croc
Old Croc


Joined: 01 October 2004
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Points: 2744 		Post Options Post Options   Thanks (0) Thanks(0)   Quote tb_mike Quote  Post ReplyReply Direct Link To This Post Posted: 01 October 2004 at 12:51pm
Brace the weakest part
Brace the longest part that will resonate the highest
Are u using ply or mdf?
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Rog View Drop Down
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Rogers Archive Posts

Joined: 23 March 2010
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Points: 2166 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Rog Quote  Post ReplyReply Direct Link To This Post Posted: 01 October 2004 at 12:56pm

But don't brace half way along a pannel. If you do you will end up with two panels that will both be radiating at the same frequency, but juts higher up.

Put braces of centre to avoid making smaller but evenly sized panels.
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CHAMPION View Drop Down
Old Croc
Old Croc


Joined: 30 September 2004
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Points: 3667 		Post Options Post Options   Thanks (0) Thanks(0)   Quote CHAMPION Quote  Post ReplyReply Direct Link To This Post Posted: 01 October 2004 at 9:39pm
BRACE YOURSELF !! hahaha
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staiper View Drop Down
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Joined: 26 February 2004
Location: Croatia
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Points: 550 		Post Options Post Options   Thanks (0) Thanks(0)   Quote staiper Quote  Post ReplyReply Direct Link To This Post Posted: 02 October 2004 at 7:12pm

RCF plans:

http://groups.msn.com/SpeakerBuildingpics/shoebox.msnw?actio n=ShowPhoto&PhotoID=24

enjoy
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JD01 View Drop Down
Young Croc
Young Croc


Joined: 23 August 2004
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Points: 819 		Post Options Post Options   Thanks (0) Thanks(0)   Quote JD01 Quote  Post ReplyReply Direct Link To This Post Posted: 03 October 2004 at 1:40am
The original drivers have a 2,5" VC, so it's no wonder that this speakers easily fry with 800W amping (clean, limited signal of course)....
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tb_mike View Drop Down
Old Croc
Old Croc


Joined: 01 October 2004
Location: New Zealand
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Points: 2744 		Post Options Post Options   Thanks (0) Thanks(0)   Quote tb_mike Quote  Post ReplyReply Direct Link To This Post Posted: 03 October 2004 at 4:56am

Staiper-Good idea to make an msn group

Perhaps if enough people were online at once we could discuss things in a chatroom-if we had enough

 

Cheers!
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Three Bee View Drop Down
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Joined: 04 September 2004
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Points: 11 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Three Bee Quote  Post ReplyReply Direct Link To This Post Posted: 23 October 2004 at 1:09pm

I dont know if its just me, but i cant draw the picture over on deltacad... The 45deg pannel at the top rear is always in the way of the 420mm brace. The angled pannels doesnt line up either if ya go with the pans...

Anyone got a better plan / drawing?

 

Thanks

Hugo
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Three Bee View Drop Down
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Joined: 04 September 2004
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Points: 11 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Three Bee Quote  Post ReplyReply Direct Link To This Post Posted: 23 October 2004 at 1:10pm
PS. id like the T18 plans though...Wink
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Three Bee View Drop Down
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Joined: 04 September 2004
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Points: 11 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Three Bee Quote  Post ReplyReply Direct Link To This Post Posted: 30 October 2004 at 12:33am
Anybody?...Confused
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