12v sub help

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   Im looking to build a sub for general use with existing 12v boom boxes.

Can anyone recommend a particular taped horn design or shall i just go for a less efficient reflex design? 
Can anyone recommend any particular drivers? 
Needs to be small enough that it could be strapped to ones back.

The idea is just to add bass reinforcement to mini rigs, marley boom boxes, boominators e.t.c

Many thanks
Tom

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tcourtneyvincent Members Profile Send Private Message Find Members Posts Add to Buddy List Young Croc Joined: 04 January 2011 Location: Devon Status: Offline Points: 1146	Post Options Post Reply Quote tcourtneyvincent Report Post Thanks(0) Quote Reply Topic: 12v sub help Posted: 24 October 2014 at 11:55pm
	Im looking to build a sub for general use with existing 12v boom boxes. Can anyone recommend a particular taped horn design or shall i just go for a less efficient reflex design? Can anyone recommend any particular drivers? Needs to be small enough that it could be strapped to ones back. The idea is just to add bass reinforcement to mini rigs, marley boom boxes, boominators e.t.c Many thanks Tom

lutkeveld Members Profile Send Private Message Find Members Posts Add to Buddy List Young Croc Joined: 23 September 2013 Location: The Netherlands Status: Offline Points: 517	Post Options Post Reply Quote lutkeveld Report Post Thanks(0) Quote Reply Posted: 25 October 2014 at 1:23pm
	Bass reinforcement for a Minirig or Boominator is something quite different. Minirig already has the minisub. Boominator can be supported by a Cubo15. What are you looking for exactly? How low do you want to go? How big can it be? How loud should it be?

mini-mad Members Profile Send Private Message Find Members Posts Add to Buddy List Old Croc Joined: 13 July 2012 Location: london Status: Offline Points: 6903	Post Options Post Reply Quote mini-mad Report Post Thanks(0) Quote Reply Posted: 25 October 2014 at 1:41pm
	Cubo15 IS support for the boominator????? Thats one huge fecking support sub. Surely a TH12 would be more compact and have a more "practical" bandwidth.
	If it sounds like a gorilla is trying to escape, turn it down.

Saturnus Members Profile Send Private Message Find Members Posts Add to Buddy List Old Croc Joined: 13 July 2010 Location: Copenhagen Status: Offline Points: 2025	Post Options Post Reply Quote Saturnus Report Post Thanks(0) Quote Reply Posted: 25 October 2014 at 1:46pm
	A Cubo15 is the standard sub for a Boominator. Technically you should use 2 Cubo15s but you can get away with using one as long as the the amp for the sub can deliver at least 8 times the power to the Cubo15 than the amp used for the Boominator delivers per channel. Please keep in mind that this is with the standard kappa 15lfa drivers. If you're using other drivers for the Cubo15 you might not need as much power and/or the second Cubo15. Edited by Saturnus - 25 October 2014 at 1:50pm

bitSmasher Members Profile Send Private Message Find Members Posts Add to Buddy List Old Croc Joined: 23 June 2012 Location: Melbourne Status: Offline Points: 2295	Post Options Post Reply Quote bitSmasher Report Post Thanks(0) Quote Reply Posted: 25 October 2014 at 3:42pm
	Big bass ain't small

Saturnus Members Profile Send Private Message Find Members Posts Add to Buddy List Old Croc Joined: 13 July 2010 Location: Copenhagen Status: Offline Points: 2025	Post Options Post Reply Quote Saturnus Report Post Thanks(0) Quote Reply Posted: 25 October 2014 at 3:53pm
	A have heard of people using a THAM15 for Boominator sub support which is more compact than a Cubo15 but I just wonder if you can really drive it hard enough so that it doesn't bottom out when you most need it. The Boominator is 4x 10" pro midwoofers, it takes an awful lot of cone displacement to keep up with that. Edited by Saturnus - 25 October 2014 at 3:54pm

mini-mad Members Profile Send Private Message Find Members Posts Add to Buddy List Old Croc Joined: 13 July 2012 Location: london Status: Offline Points: 6903	Post Options Post Reply Quote mini-mad Report Post Thanks(0) Quote Reply Posted: 25 October 2014 at 3:59pm
	The tham15 outplays a cubo with the same driver with more thud with slightly less bottom end (and i do mean a few hertz) Hence why im moving over to tham15s from my cubo15... just need to sell my boxes on 1st. So any boominator fans wanting said box(s) i have 4 to shift! (Already bolted for the kappa)
	If it sounds like a gorilla is trying to escape, turn it down.

Saturnus Members Profile Send Private Message Find Members Posts Add to Buddy List Old Croc Joined: 13 July 2010 Location: Copenhagen Status: Offline Points: 2025	Post Options Post Reply Quote Saturnus Report Post Thanks(0) Quote Reply Posted: 25 October 2014 at 4:19pm
	Quite honestly I think the Cubo15 is a better match. When used outdoors which a Boominator would normally be, I think the Cubo15 beats the THAM15 quite significantly. They really are perfectly matched for eachother in sound whereas the THAM15 is "drier", perhaps more precise but not as engaging. I've not heard the THAM15 at high volumes though, only at quite moderate volumes, and there could be other set up differences to account for it. Edited by Saturnus - 25 October 2014 at 4:20pm

Hemisphere Members Profile Send Private Message Find Members Posts Add to Buddy List Old Croc Joined: 21 April 2008 Status: Offline Points: 2272	Post Options Post Reply Quote Hemisphere Report Post Thanks(0) Quote Reply Posted: 26 October 2014 at 12:30pm
	"Needs to be small enough that it could be strapped to ones back." Well the good news is we've managed to narrow it down to two options: Boominator + Cubo15 or Boominator + THAM15. Edited by Hemisphere - 26 October 2014 at 12:31pm

lutkeveld Members Profile Send Private Message Find Members Posts Add to Buddy List Young Croc Joined: 23 September 2013 Location: The Netherlands Status: Offline Points: 517	Post Options Post Reply Quote lutkeveld Report Post Thanks(0) Quote Reply Posted: 26 October 2014 at 12:52pm
	Hahaha, good luck finding portable bass reinforcement for the Boominator. It is do-able if we're talking about the Mini or Micro.

tcourtneyvincent Members Profile Send Private Message Find Members Posts Add to Buddy List Young Croc Joined: 04 January 2011 Location: Devon Status: Offline Points: 1146	Post Options Post Reply Quote tcourtneyvincent Report Post Thanks(0) Quote Reply Posted: 26 October 2014 at 5:58pm
	Okay thanks for the help but obviously the cubo and THAM are to large to be practical for my needs. When i stated what it was to be used with, i should have just said that i just wanted bass reinforcement for small portable speakers, even just a mini rig. If it does end up getting used with a boominator then i will just turn the bominator down, just looking to get a flat ish response from 50hz up, i can adjust what ever is playing the mid/hi's to give the right balance. Thanks Edited by tcourtneyvincent - 26 October 2014 at 6:01pm

Hemisphere Members Profile Send Private Message Find Members Posts Add to Buddy List Old Croc Joined: 21 April 2008 Status: Offline Points: 2272	Post Options Post Reply Quote Hemisphere Report Post Thanks(0) Quote Reply Posted: 26 October 2014 at 6:36pm
	If you need 50Hz up and strapped to your back then reflex is the only way. The Minirig sub manages to squeeze about 100dB out of a very tiny enclosure using bass reflex. Achieving the same results is probably beyond the realms of DIY but It may be worth experimenting with various 3, 4, and 5 inch drivers, simulated in very small enclosures. A block of 2 or even 4 small drivers tuned around 60Hz could easily be carried on your back and with that many drivers could also be quite efficient too.