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In the Forum: Horn-Loaded Speakers
In the Thread: 45Hz Bass Horn
Post Subject: The self-explanatory email.Posted by Romy the Cat on: 9/14/2007
 Romy the Cat wrote:
I can not speak Swedish and have no idea what they say but here is a Swedish 50Hz horn project. I admit that I have difficulties to like people who design horns in Hornresp but… for whatever it worth…

http://www.hififorum.nu/forum/topic.asp?TOPIC_ID=61668&whichpage=1

“Hi! I have built this horn at the bottom of the page

http://www.GoodSoundClub.com/TreeItem.aspx?PostID=4984

It actually goes down to 20 Hz, but from 30 Hz it has full output. Why don´t you like either Hornresp or our project? Is it because the front chamber? the driver we used? Wrong design? Or what? We built this horn to the other guys "Student-club-house", don´t know what it´s called in english... They allready had 2 drivers, Beyma 15K200, and said to us to build a subwoofer, well, a ported box aint much fun and very inefficient, therefore the horn. The horn allso had to be portable and light weight, not easy if you have 5 sqaremeters mouth... So therefore the relativly large front chamber, it helps the horn to dig deeper and allso to prevent higher frequenses (spell?) from wall resonanses to be amplified by the horn. The final result became very nice. It delivers a really tight bass and can play so loud that galss is falling off tabels. The romm is aprox. 10*25*10 meters and the horn is attached in a crane. With disco-music, which it is designed for you dont hear walls shatter, but if you are going to listen to metal or so with higher bass there are some resonanses due to wall vibrations. On the orher hand, the horn (without the box) weight only about 200 lbs... Feel free to post this message in the thread "45 Hz Horn" if you like.

Regards Petter Persson, Sweden”

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