EA Hybrid Folded Horn

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   Hi!
I've been reading this site for a long time so it's time to write my own post. It's about a horn loaded enclosure I designed and built last year.

The cab had to meet certain requisites:

Weight: <50kg
Size: have to fit in a Renault Scenic
Driver: 12-15" (because of weight), as cheap as possible (LOL)
Useable frequency: down to 45Hz
Extras: flat frequency response (can be used on its own), long throw

I was a newbie so it took me more than 3 months to figure out/learn how things work (also in woodworking). But when I finished, the result was awesome! Finally I loaded them with Fane Sovereign 15-400 speakers (also designed the enclosure around these speakers). The cabs weight stayed under 40kg (measured). The size was perfect (can fit both of them in the car).

The final result:

Measurement:

I don't know if I set the measurement tools up properly. 2 cabs from 5m (don't know how did I figured it out), SPL not calibrated.

First I had the chance to try it out in a big parking lot. The cab was placed in the car's trunk (0,5m above the ground). The whole lot started shaking over 150wRMS input and I could hear fine quality bass 50m away from it, so I've had such a big smile on my face like never before. It was clear bass in the face. 

By the time I realized I missed one thing... the excursion . After all, I changed the speakers to Beyma 15P1000 to achieve more SPL and more controll on the low notes.

I hope You'll find this topic interesting! Also sorry for my bad English .

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E.A Members Profile Send Private Message Find Members Posts Add to Buddy List New Member Joined: 19 January 2014 Location: Budapest Status: Offline Points: 8	Post Options Post Reply Quote E.A Report Post Thanks(0) Quote Reply Topic: EA Hybrid Folded Horn Posted: 25 March 2014 at 10:28pm
	Hi! I've been reading this site for a long time so it's time to write my own post. It's about a horn loaded enclosure I designed and built last year. The cab had to meet certain requisites: Weight: <50kg Size: have to fit in a Renault Scenic Driver: 12-15" (because of weight), as cheap as possible (LOL) Useable frequency: down to 45Hz Extras: flat frequency response (can be used on its own), long throw I was a newbie so it took me more than 3 months to figure out/learn how things work (also in woodworking). But when I finished, the result was awesome! Finally I loaded them with Fane Sovereign 15-400 speakers (also designed the enclosure around these speakers). The cabs weight stayed under 40kg (measured). The size was perfect (can fit both of them in the car). The final result: Measurement: I don't know if I set the measurement tools up properly. 2 cabs from 5m (don't know how did I figured it out), SPL not calibrated. First I had the chance to try it out in a big parking lot. The cab was placed in the car's trunk (0,5m above the ground). The whole lot started shaking over 150wRMS input and I could hear fine quality bass 50m away from it, so I've had such a big smile on my face like never before. It was clear bass in the face. By the time I realized I missed one thing... the excursion . After all, I changed the speakers to Beyma 15P1000 to achieve more SPL and more controll on the low notes. I hope You'll find this topic interesting! Also sorry for my bad English .

corell Members Profile Send Private Message Find Members Posts Add to Buddy List Young Croc Joined: 19 August 2013 Location: Berlin Status: Offline Points: 1161	Post Options Post Reply Quote corell Report Post Thanks(0) Quote Reply Posted: 25 March 2014 at 11:42pm
	Very interesting! I like the bracing, frequency response also looks really good for 2 cabs! would you mind posting more information like dimensions and a sketch of the enclosure? maybe a simulation to compare it to your measurements?

E.A Members Profile Send Private Message Find Members Posts Add to Buddy List New Member Joined: 19 January 2014 Location: Budapest Status: Offline Points: 8	Post Options Post Reply Quote E.A Report Post Thanks(0) Quote Reply Posted: 26 March 2014 at 12:12am
	The simulation of 1 cab: I don't really remember the exact dimensions, but were about (HxWxD): 88cm x 53cm x 105cm. Its inside is quite similar to the Martin WLX (also the plot). Which is a bit funny, because when I designed it, I didn't even know about Martin-Audio. Edited by E.A - 26 March 2014 at 12:21am

corell Members Profile Send Private Message Find Members Posts Add to Buddy List Young Croc Joined: 19 August 2013 Location: Berlin Status: Offline Points: 1161	Post Options Post Reply Quote corell Report Post Thanks(0) Quote Reply Posted: 26 March 2014 at 12:20am
	does this mean you cant access/change drivers then? nearly 500l is not what i would consider small but well, if you are happy with it ;) looks like a good job you did there! Edited by corell - 26 March 2014 at 12:25am

E.A Members Profile Send Private Message Find Members Posts Add to Buddy List New Member Joined: 19 January 2014 Location: Budapest Status: Offline Points: 8	Post Options Post Reply Quote E.A Report Post Thanks(0) Quote Reply Posted: 26 March 2014 at 12:25am
	There is a trap cut-out on the other side.

E.A Members Profile Send Private Message Find Members Posts Add to Buddy List New Member Joined: 19 January 2014 Location: Budapest Status: Offline Points: 8	Post Options Post Reply Quote E.A Report Post Thanks(0) Quote Reply Posted: 26 March 2014 at 12:37am
	Sure it's huge, but the only size limit was the car and it fits. Thanks!

all bass Members Profile Send Private Message Find Members Posts Add to Buddy List Old Croc Joined: 11 October 2012 Location: the Netherlands Status: Offline Points: 1855	Post Options Post Reply Quote all bass Report Post Thanks(0) Quote Reply Posted: 26 March 2014 at 6:49am
	Are those ports at the top of the hornmouth?

Teunos Members Profile Send Private Message Find Members Posts Add to Buddy List Old Croc Joined: 23 November 2008 Location: The Netherlands Status: Offline Points: 1793	Post Options Post Reply Quote Teunos Report Post Thanks(0) Quote Reply Posted: 26 March 2014 at 7:05am
	Yes, which is why they are ported horns. It is basically a hornloaded BP6. i builttwo myself and was quite impressed with the results. It's just that i found it rather hard to get any design to play lower than 40Hz, both in simulations as well as in real life. Your cabs follow about the same response as mine did so i think these cabs can sound great as well!
	Best regards, Teun.

crossed Members Profile Send Private Message Find Members Posts Add to Buddy List Registered User Joined: 26 September 2011 Location: Ky US Status: Offline Points: 217	Post Options Post Reply Quote crossed Report Post Thanks(0) Quote Reply Posted: 26 March 2014 at 9:37am
	Good job, i like the build quality.

Keen Members Profile Send Private Message Find Members Posts Add to Buddy List Young Croc Joined: 30 May 2011 Location: Brisbane, Aus Status: Online Points: 1198	Post Options Post Reply Quote Keen Report Post Thanks(0) Quote Reply Posted: 26 March 2014 at 10:26am
	nice one EA, bet you're loving it!

E.A Members Profile Send Private Message Find Members Posts Add to Buddy List New Member Joined: 19 January 2014 Location: Budapest Status: Offline Points: 8	Post Options Post Reply Quote E.A Report Post Thanks(0) Quote Reply Posted: 26 March 2014 at 11:39am
	I love it ... warm as hell, without any colorization especially below 80-100Hz. Teunos, now I'm trying to improve the lower cut-off with a weird design. I don't know how to describe it... like a horn loaded BP12. It seems to work on paper but group delay is a problem.

Darkstar Members Profile Send Private Message Find Members Posts Add to Buddy List Registered User Joined: 08 October 2014 Location: Italy Status: Offline Points: 326	Post Options Post Reply Quote Darkstar Report Post Thanks(0) Quote Reply Posted: 10 October 2014 at 9:35am
	Does anyone have a plan/paperwork for these? Or just generally for a ported horn 15" enclosure? I'd love to have one of these. Congratulations and thanks in advance for anyone who can provide me some measures. Edited by Darkstar - 10 October 2014 at 9:39am