hd15 modular system

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   ive been thinking  of  a  nice modular system using
hd15s loaded with jbl  E140s and then building a mid top using a
1.5 exit driver and a jbl E120.

build the cabinet to the same dimensions as the hd15 cab with the 12" driver horn loaded    

then we figure out how many hd15s for 1 mid/top and you just increase
the number of cabs for bigger events keeping the same ratio cabs

i got the idea looking at the alpha nexo systems 

so i dunno if this is even possible to horn load a 12" in an hd15 size cab but id love to hear your input

cheers

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garrett Members Profile Send Private Message Find Members Posts Add to Buddy List Registered User Joined: 21 October 2004 Location: Canada Status: Offline Points: 15	Post Options Post Reply Quote garrett Report Post Thanks(0) Quote Reply Topic: hd15 modular system Posted: 14 April 2005 at 12:02pm
	ive been thinking of a nice modular system using hd15s loaded with jbl E140s and then building a mid top using a 1.5 exit driver and a jbl E120. build the cabinet to the same dimensions as the hd15 cab with the 12" driver horn loaded then we figure out how many hd15s for 1 mid/top and you just increase the number of cabs for bigger events keeping the same ratio cabs i got the idea looking at the alpha nexo systems so i dunno if this is even possible to horn load a 12" in an hd15 size cab but id love to hear your input cheers

norty303 Members Profile Send Private Message Find Members Posts Add to Buddy List Old Croc Joined: 18 August 2004 Location: Eastbourne Status: Offline Points: 8800	Post Options Post Reply Quote norty303 Report Post Thanks(0) Quote Reply Posted: 14 April 2005 at 12:40pm
	Take a look at Dom's system pics on the main site to get an idea of dimensions for a single 12" horn. I think you'd struggle to get a horn in the height of the cab unless you used one with very narrow vertical dispersion and getting the comp driver in might be a bigger problem. I believe Dom's 12" overhang the rear of the HD15's by a way too. If you could compromise and make the mid/tops cab tall enough to accomodate all the bits and modify the horn so it was the depth you needed then it could work. I'd say 3 HD15's to 1 top box but you'd need a good 12" on that.
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Dom Members Profile Send Private Message Find Members Posts Add to Buddy List Old Croc Joined: 25 February 2004 Location: United Kingdom Status: Offline Points: 1700	Post Options Post Reply Quote Dom Report Post Thanks(0) Quote Reply Posted: 14 April 2005 at 3:02pm
	We currently use 1 12" driver over 4 HD15s. It would happily keep up with 6 I'm sure.
	"It sounded like a million fire engines chasing ten million ambulances through a war zone and it was played at a volume that made the empty chair beside me bleed."

garrett Members Profile Send Private Message Find Members Posts Add to Buddy List Registered User Joined: 21 October 2004 Location: Canada Status: Offline Points: 15	Post Options Post Reply Quote garrett Report Post Thanks(0) Quote Reply Posted: 14 April 2005 at 3:14pm
	thanks guys im still sourceing out 13 ply birch for 4 hd15s (apperently not many places carry it around here in canada) so as soon as im done those im gonna try them with my 12" horn cabs and then work on a plan to fit a 12" horn and an hf driver in an hd15 cab maybe ill draw up some pics of some ideas ive been playing with and see if you guys like em

Disco Stu Members Profile Send Private Message Find Members Posts Add to Buddy List Old Croc Joined: 03 March 2005 Location: United Kingdom Status: Offline Points: 2492	Post Options Post Reply Quote Disco Stu Report Post Thanks(0) Quote Reply Posted: 15 April 2005 at 7:37am
	If you stuck a hornloaded 8" above the twelve then crossed to a 1" you might get a box with more aesthetically pleasing dimensions I know on one of rogs cabs on his old bigmouthspeakers website he had a hornloaded 12" 8" and 1" which would cover the frequency band better anyway. I believe the 8" and the 1" sat side by side above the 12" as well and were no wider than it. This way of course you could lower the vertical dispersion of the 12". It all depends how many top cabs you are using a side and if you wish to array them. Obviously if you do then you are looking at a different layout perhaps mount the comp driver infront of the 12" like in this design http://www.speakerstore.nl/index.php?l=nl&pg=11&c=12 Stu
	All you need to know is: Sensitivity + Power Handling - Power Compression = Max Output My acts: www.myspace.com/thebowiexperience www.myspace.com/scheisseelektronisches

garrett Members Profile Send Private Message Find Members Posts Add to Buddy List Registered User Joined: 21 October 2004 Location: Canada Status: Offline Points: 15	Post Options Post Reply Quote garrett Report Post Thanks(0) Quote Reply Posted: 19 April 2005 at 12:38am
	i was actually thinking of a design like that but i dont know how to go about figuring out how to build the horn for optimal sound i could always design something that looks right and hope to hell it sounds good and what if i used a 10" mid instead of a 12"??

JD01 Members Profile Send Private Message Find Members Posts Add to Buddy List Young Croc Joined: 23 August 2004 Status: Offline Points: 819	Post Options Post Reply Quote JD01 Report Post Thanks(0) Quote Reply Posted: 19 April 2005 at 9:50am
	Hornloaded 10" speakers won't go below 200Hz. You can force them to do, but the sound gets worse and you'll get very limited output in the lowmids. Of course one can design a 10" horn that will go lower, but the output would reduce. So if your HD15 play good to 200Hz and a bit above you could do it. BTW if you setup one stack and let's say you need three HD15 for one top that doens't yctually mean you need 6 HD15 for two tops. The ratio changes, because you get coupling in bass but the directivity won't change that much. With tops it's another story. You don't want overlap with the tops so they will be set up that every top is directed to another area. So you won't get higher 'outputs per area' (energy) with more tops. But in bass range you'll get more...

Disco Stu Members Profile Send Private Message Find Members Posts Add to Buddy List Old Croc Joined: 03 March 2005 Location: United Kingdom Status: Offline Points: 2492	Post Options Post Reply Quote Disco Stu Report Post Thanks(0) Quote Reply Posted: 19 April 2005 at 10:47am
	I wouldnt go designing a flare for an 8" without proper knowledge. I dont have the knowledge so i will attempt to look for someone that makes a flare for an 8". I know ive seen two manufactured horns (like porn horns) on the web somewhere i just cant remember where. Il see what i can dig up Stu
	All you need to know is: Sensitivity + Power Handling - Power Compression = Max Output My acts: www.myspace.com/thebowiexperience www.myspace.com/scheisseelektronisches

Disco Stu Members Profile Send Private Message Find Members Posts Add to Buddy List Old Croc Joined: 03 March 2005 Location: United Kingdom Status: Offline Points: 2492	Post Options Post Reply Quote Disco Stu Report Post Thanks(0) Quote Reply Posted: 19 April 2005 at 10:52am
	How bout that took me 5 minutes http://www.monacor.com/int/en/produktseite_gesamtprogramm.ph p?artid=2039&spr=EN&typ=u Stu
	All you need to know is: Sensitivity + Power Handling - Power Compression = Max Output My acts: www.myspace.com/thebowiexperience www.myspace.com/scheisseelektronisches