Thread: Cornu horn built as a sub. Crazy idea?

A lot of effort... just for a sub.

Someone has already beaten you too it....

http://sebastian-pitkanen.blogspot.c...copy-horn.html

But its not a sub, its a fullrange single driver cab!

Yep.....http://www.6moons.com/audioreviews/cornu/cornu.html

What you really want is a "Bill Fitzmaurice" coffee table sub. It's a true folded horn and a true sub. He sells you the designs and detailed plans, you build them yourself, then finish it in whatever looks good in your living room.

http://www.billfitzmaurice.com/TT.html

That looks like one of those.... "BUT" WHY designs.

If you want a subwoofer coffee table there are lots opf simple designs that will knock your socks off.
A good simple bass reflex enclosure with a good low frequency driver would doo the job real nice.

if you want to get fancy a compound design or a band pass.


crokey you should be able to get 100 to 150 litres out of a coffee table no problems.

cheers

You're talking to a guy who's home theatre sub is a sealed 2x10 and who's bass guitar rig is a ported 2x12, both of which I designed/built myself, and both of which kick ass...........

Yeah Bill's designs are a bit of overkill, but he is very passionate about his folded horns.He'll argue that a horn is way more efficient (louder) and goes lower than a bass reflex cab using the same driver. He argues that bass reflex isn't so common because they're better, but because they're easier and cheaper to manufacture. Horns are labour intensive to build and therefore cost a lot more to produce, making it harder to sell them commercially for profit. He's also quick to point out that brands like EAW and Meyer all feature horns in their high end product range.

The science is sound. To quote Bill, "A Bass reflex cab is a high impedance devices operating into a low impedance load (air), and that makes for an inefficient power transfer. A horn acts like a transformer, allowing the driver to operate into a higher impedance load, in so doing improving the power transfer from the amp to the air. Horns don't have to be huge to work, and even a small degree of horn loading can significantly improve performance. Schroeder bass guitar cabs do just that".

One of these days I'll build one of his cabs just for kicks.............

I was talking about that thing up in post 3.
I do recognise that there are speaker designs out there that are designed purely for the ammusement of the builder

cheers

Just thinking....... isn't it about time we saw a revival of the "corner horn".

Was a very popular design in the 50's & 60's.
Basicaly you had a folded re-enterant horn design that fired into the corner of the room the walls then completed the last stage of the horn.

Jensen I think were one of the pioneers but there were quite a few others.
Klipsh also had some medium sized HIFI horn designs.

I would have my doubts. of some of these olad designs having the realy loww balls that are currently expected.

cheers

I have personally built a few hornloaded subwoofer designs. they do work well, but be aware that most reasonably sized designs are comprimised, unless used in groups of four or so (this does include bill fitzmaurice designs), or used corner firing etc. Two horn subs i have built with $100ea jaycar venom drivers (2 total), and three sheets of MDF outperform a 340 litre, ported, adire tempest EBS ($365 plus shipping) subwoofer i have in sound quality (a bit better), and output (about 15db better).

The Klipsch La Scalas were the big corner horns that were often used in cinemas; they were pretty good gear, and operated to close to full efficiency on only 20W RMS if memory serves.

I have also built a table sub http://www.gourmetsaint.com.au/Subwoofer

Cheers,

Mark

Originally Posted by GourmetSaint

I have also built a table sub http://www.gourmetsaint.com.au/Subwoofer

Cheers,

Mark

Did you use a glass top as per the one pictured on this website?

Mark what happens if one of those drivers die, I cant see how you'd access it?