18sound horn

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   hello all...
I've been looking at some 18Sound horns to be used on a mid top speaker project I'll work on.

In particular the model 
18 Sound XT120
Eliptical Constant Coverage Horn Lens Flare
Size: 1" throat
Coverage: 90H x 60V
Frequency Response: 1.6-20kHz
Material: Injection Molded Polyurethane
Crossover Frequency: 1500Hz

being made of PU plastic material, one of the questions I have is if I will need to brace the horn with the compression driver because of the overall weight. 
The whole thing will be supported just by the bolts on the horn border on the baffle...

also...on the 18sound specs sheet it states that these horn have been designed to match their 18sound com drivers. I guess that they would fit also other 1" bolt on drivers , anyone has had experience with it  ?

thank you !

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sicoroots Members Profile Send Private Message Find Members Posts Add to Buddy List Registered User Joined: 11 December 2016 Location: pacific NW Status: Offline Points: 78	Post Options Post Reply Quote sicoroots Report Post Thanks(0) Quote Reply Topic: 18sound horn Posted: 13 February 2017 at 7:42pm
	hello all... I've been looking at some 18Sound horns to be used on a mid top speaker project I'll work on. In particular the model 18 Sound XT120 Eliptical Constant Coverage Horn Lens Flare Size: 1" throat Coverage: 90H x 60V Frequency Response: 1.6-20kHz Material: Injection Molded Polyurethane Crossover Frequency: 1500Hz being made of PU plastic material, one of the questions I have is if I will need to brace the horn with the compression driver because of the overall weight. The whole thing will be supported just by the bolts on the horn border on the baffle... also...on the 18sound specs sheet it states that these horn have been designed to match their 18sound com drivers. I guess that they would fit also other 1" bolt on drivers , anyone has had experience with it ? thank you !

I-shen Soundboy Members Profile Send Private Message Find Members Posts Add to Buddy List Registered User Joined: 21 December 2016 Location: Big Smoke Status: Offline Points: 375	Post Options Post Reply Quote I-shen Soundboy Report Post Thanks(0) Quote Reply Posted: 13 February 2017 at 7:56pm
	Bracing or supporting the compression driver is probably necessary regardless of the flare material: The weight of the unsupported driver at the end of the horn will lever the t-nuts/screws/nails out of the baffle long before the flare fatigues. If you're using timy neo drives, less reason to bother. Most horn fittings (2, 3 or 4 bolt) are interchangeable with the same bolt pattern. Some manufacturers like to list a 0.1 or 0.2mm difference to encourage use of same brand, but this is rarely an issue - file the holes out if needed. Edited by I-shen Soundboy - 13 February 2017 at 7:57pm

sicoroots Members Profile Send Private Message Find Members Posts Add to Buddy List Registered User Joined: 11 December 2016 Location: pacific NW Status: Offline Points: 78	Post Options Post Reply Quote sicoroots Report Post Thanks(0) Quote Reply Posted: 14 February 2017 at 5:40pm
	thank I-Shen for confirming this...I'm going to add an internal panel with a hole the size of the comp driver, sort of an internal baffle looking piece and a couple of triangular bracing at the bottom of it. The driver will sit inside the whole and its weight supported...it should work. bless !

_djk_ Members Profile Send Private Message Find Members Posts Add to Buddy List Old Croc Joined: 23 November 2004 Location: United States Status: Offline Points: 6002	Post Options Post Reply Quote _djk_ Report Post Thanks(0) Quote Reply Posted: 15 February 2017 at 1:23am
	. Edited by _djk_ - 17 February 2017 at 1:48am
	djk

bassenmass Members Profile Send Private Message Find Members Posts Add to Buddy List Old Croc Joined: 03 September 2009 Location: "unknown" Status: Offline Points: 4009	Post Options Post Reply Quote bassenmass Report Post Thanks(0) Quote Reply Posted: 15 February 2017 at 1:53pm
	the xt120 most likely will work with other comps, might be they are optimized to work best with 18s 1"s though due to matching Horn entry angles and comp exit angles.. Using small`ish neo comps wont do much harm to such a short horn i bet, for peace of mind you could brace it but not necessary imo.