Most efficient compact sub design

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   Looking for recommendations for the most efficient sub design for single 15" that would keep up with 2 12s a side and a bms 4594nd a side.Thinking 2 x 15s a side in singles for portability. Probably reflex but like the idea of tapped horns?

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jamie-ashton-solo Members Profile Send Private Message Find Members Posts Add to Buddy List Young Croc Joined: 26 January 2009 Location: staffordshire Status: Offline Points: 728	Post Options Post Reply Quote jamie-ashton-solo Report Post Thanks(0) Quote Reply Topic: Most efficient compact sub design Posted: 04 October 2018 at 9:57am
	Looking for recommendations for the most efficient sub design for single 15" that would keep up with 2 12s a side and a bms 4594nd a side. Thinking 2 x 15s a side in singles for portability. Probably reflex but like the idea of tapped horns?
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Xoc1 Members Profile Send Private Message Find Members Posts Add to Buddy List Registered User Joined: 15 October 2012 Location: Devon UK Status: Offline Points: 397	Post Options Post Reply Quote Xoc1 Report Post Thanks(0) Quote Reply Posted: 04 October 2018 at 10:47am
	There's the problem - More Compact - Less efficient More Efficient - less compact. So I suppose the questions are:- How big a box - or set of boxes can you accommodate? How low do you want to go?

jamie-ashton-solo Members Profile Send Private Message Find Members Posts Add to Buddy List Young Croc Joined: 26 January 2009 Location: staffordshire Status: Offline Points: 728	Post Options Post Reply Quote jamie-ashton-solo Report Post Thanks(0) Quote Reply Posted: 04 October 2018 at 10:51am
	Yes was expecting that. Basically it's mainly a weight issue not size. Due to carrying them on my own. Hence 4 15s instead of duals. 35 to 40hz to 100hz would be sufficient. Edited by jamie-ashton-solo - 04 October 2018 at 10:52am
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jamie-ashton-solo Members Profile Send Private Message Find Members Posts Add to Buddy List Young Croc Joined: 26 January 2009 Location: staffordshire Status: Offline Points: 728	Post Options Post Reply Quote jamie-ashton-solo Report Post Thanks(0) Quote Reply Posted: 04 October 2018 at 10:55am
	ive considered going down ghe active route but don't want to comprimise sound quality. Musical bass is much preferred over spl however also needs to keep up with 4 12s.
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JonB67 Members Profile Send Private Message Find Members Posts Add to Buddy List Young Croc Joined: 22 April 2016 Location: UK Status: Offline Points: 1376	Post Options Post Reply Quote JonB67 Report Post Thanks(0) Quote Reply Posted: 04 October 2018 at 11:13am
	load with neo drivers, saves 4 -5 kilos per driver. Tapped horns are more efficient, and if a single pair of tham 15s has enough output to do the job that's the lightest, cheapest, easiest solution. If not then a pair of compact b6 alignment subs per side might do the trick Also have a look at these q15 by the late tony wilkes (a big contributor to this forum before his untimely passing a few years ago) https://forum.speakerplans.com/q15-compact-15-bass-bin_topic70808.html If you like what you see, user Bee on here owns the rights, sells an updated version, or will give you a copy of tonys original plans if you donate to the British heart foundation. Edited by JonB67 - 04 October 2018 at 2:19pm

jamie-ashton-solo Members Profile Send Private Message Find Members Posts Add to Buddy List Young Croc Joined: 26 January 2009 Location: staffordshire Status: Offline Points: 728	Post Options Post Reply Quote jamie-ashton-solo Report Post Thanks(0) Quote Reply Posted: 04 October 2018 at 1:19pm
	thanks for that. I did sit with Tony and listened to his tham15s. Great to know they are still being manufactured. I'll get in touch with bee
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JonB67 Members Profile Send Private Message Find Members Posts Add to Buddy List Young Croc Joined: 22 April 2016 Location: UK Status: Offline Points: 1376	Post Options Post Reply Quote JonB67 Report Post Thanks(0) Quote Reply Posted: 04 October 2018 at 2:21pm
	tonys were the compact b6 alignment reflex called the q15 The tham 15 tapped horns are anders martinssons creations and the plans are freely available Sorry if that was confusing Edited by JonB67 - 04 October 2018 at 2:22pm

jamie-ashton-solo Members Profile Send Private Message Find Members Posts Add to Buddy List Young Croc Joined: 26 January 2009 Location: staffordshire Status: Offline Points: 728	Post Options Post Reply Quote jamie-ashton-solo Report Post Thanks(0) Quote Reply Posted: 04 October 2018 at 2:23pm
	Yes I realised after although it was the tham15s I heard. Would 2 a side of these me feasable do you think?
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rish Members Profile Send Private Message Find Members Posts Add to Buddy List Young Croc Joined: 18 June 2008 Location: Durban Status: Offline Points: 547	Post Options Post Reply Quote rish Report Post Thanks(0) Quote Reply Posted: 04 October 2018 at 3:35pm
	2 a side, one on top of the other with the dual 12 above that makes for a very very nice sounding system. Most important aspect of the tham 15 is choosing the right driver. Tony did build a few tham 15 before the q15 and raved about it. Rish

jamie-ashton-solo Members Profile Send Private Message Find Members Posts Add to Buddy List Young Croc Joined: 26 January 2009 Location: staffordshire Status: Offline Points: 728	Post Options Post Reply Quote jamie-ashton-solo Report Post Thanks(0) Quote Reply Posted: 04 October 2018 at 3:45pm
	Yes exactly what I was thinking as I need height for the tops to sit on. Can anyone recommend which drivers would be best?
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snowflake Members Profile Send Private Message Find Members Posts Add to Buddy List Old Croc Joined: 29 December 2004 Location: Bristol Status: Offline Points: 3121	Post Options Post Reply Quote snowflake Report Post Thanks(0) Quote Reply Posted: 04 October 2018 at 3:57pm
	if you are talking about efficiency in terms of size and weight you should go for B6 alignment reflex - if you use lightweight amps this will give you the most output for a given amount of kit. if you are more interested in electrical efficiency or saving money go for tapped horns.

JonB67 Members Profile Send Private Message Find Members Posts Add to Buddy List Young Croc Joined: 22 April 2016 Location: UK Status: Offline Points: 1376	Post Options Post Reply Quote JonB67 Report Post Thanks(0) Quote Reply Posted: 04 October 2018 at 4:34pm
	got to confess when i weighed up the pros and cons for my own setup I ended up with reflex not tapped horns, and im not at all unhappy. They sound lovely. I have to keep mine in the an upstairs room atm and carry then up a steep narrow stair case pretty easily. Edited by JonB67 - 04 October 2018 at 6:07pm