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1" Comps above 2" |
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Big-G 
Young Croc 
Joined: 28 November 2006 Location: Naarfuk Status: Offline Points: 1141 |
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 Posted: 06 March 2009 at 12:23am |
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my cerwin vega tops use a 2" and a 1" comp for the top end, i think the 2" does 1k to 6k and the 1" does 6k to 18k
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They know what is what but they don't know what is what they just strut what the
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levyte357
The 10,000 Points Club 
Joined: 10 May 2004 Location: UK, London Status: Offline Points: 11743 |
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Posted: 13 March 2009 at 1:24am |
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Finally tested this combo today.
 1.5khz+ into certain 2", crossed into 1" using passive xover @ 8k. Sounded lovely, had to back down on the 16khz quite a bit..  Problem is my MT121 wont allow mounting of 1" horn above 2", so would have to settle for 1" above in separate box.  Edited by levyte357 - 13 March 2009 at 1:40am |
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"Who am I? I'm the guy who does his job.. You must be the other guy".
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Static Age
Old Croc 
Joined: 14 November 2005 Location: Oxfordshire Status: Offline Points: 1652 |
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Posted: 13 March 2009 at 9:22am |
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I'm also going to test this 2" + 1" set up soon, just waiting for some parts to arrive & the time to do it. I'll post my verdict.
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levyte357
The 10,000 Points Club
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Posted: 13 March 2009 at 5:35pm |
Couldn't wait to get home and do some more "testing".  put 2" on 90x40 horn, to match 1" on ME45, and it sounded like amp had suddenly warmed up. Edited by levyte357 - 13 March 2009 at 5:35pm |
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"Who am I? I'm the guy who does his job.. You must be the other guy".
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sKs01
Old Croc
Joined: 11 April 2008 Location: sheffield Status: Offline Points: 1744 |
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Posted: 13 March 2009 at 6:53pm |
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separate box, or make another box of the same footprint as your mt tall enough for the 1" glue top section on top of the mt and sash clamp or even use a ratchet strap to hold it in place whilst the clue sets? just an idea.
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You're a big man, but you're in bad shape. With me it's a full time job. Now behave yourself.
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jsg mashed
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Joined: 18 May 2007 Location: United Kingdom Status: Offline Points: 305 |
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Posted: 14 March 2009 at 7:53pm |
No problem here. Just cut a 1" hole in the side or top of your 2" horn, and mount the 1" to that hole (on the outside/back side of the horn pointing inwards).
At over 8K you don't need a horn for the 1" at all.
You want to position the driver so that the sound refects off the opposite side (or bottom) of the flare and emerges pointing directly out of the flare. Off the top of my head a 60 degree dispersion angle (ie each wall angloed 30 degrees outwards) would give you the required beam angle after 1 reflection. You'd want to check that, though.
Added bonus: path lengths may be well matched between 2" and 1".
Edit:
alternatively use the 1" as prt of the phase plug for the 12". Again, don't worry about a horn up above 8K
Edited by jsg mashed - 14 March 2009 at 7:55pm |
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...because Good is Dumb.
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Static Age wrote: