The elusive Horn...can I have it all?

Fast1one · 2007-10-03 8:46 pm

So I have built nearly every possible enclosure, or have atleast heard a good example of it.... Except...

Horns, specifically BLHs. I'll cut straight to the chase. I don't want to deal with a sub anymore, but I want most of the low frequency response to be in tact (IE as low as I can go). I was looking at the pioneer B20, or another 8 inch FR driver in that price range. Doesn't matter how much wood is used so long as I can use 2x4 feet project sheets as I don't have a truck right now. Complexity isn't too much of an issue either so long as I can use a table saw to do all the cuts.

What I am looking for is full range response from 20(30)HZ-20K. A helper tweeter will be used to fill in the upper octaves. I have about 15-20 watts to work with. Also, currently my room is too small to support anything under rouughly 30hz, but I want a response lower than that for headroom when I move into a larger space...

Is it possible? If you have any other suggestions for drivers, Im trying to keep the costs of drivers ~60 plus the cost of tweeters, so anything with an efficiency of 90db or more I can work with...

Thanks for any help or responses

-Serg

Scottmoose · 2007-10-03 9:13 pm

A BIB pipe-horn with an 8in driver like the B20 should do the trick. Small is not a word that immediately springs to mind with this cabinet though.

Fast1one · 2007-10-03 9:17 pm

Scottmoose said:
A BIB pipe-horn with an 8in driver like the B20 should do the trick. Small is not a word that immediately springs to mind with this cabinet though.

That was my first option, but the problem (which I forgot to mention) is that I usually don't have corners to work with, not to mention I want to keep it relatively short. Which is why the Suzy chang caught my interest.

One alternative I thought of is building a BIB with two folds instead of one and either floor loading it or firing it towards the wall...

GM · 2007-10-04 1:09 am

Fast1one said:
Is it possible?

Considering all your qualifiers and no corners, I don't see how.

Fast1one · 2007-10-04 3:59 am

Would folding BIBs with two folds give a noticeable drop in performance? I may just do that...It doesn't have to be small just short

Edit: I don't have to have response that low, because I know the real world is not perfect, just want to get as close as possible, maybe when I move in to my house I will have corners

GM · 2007-10-04 4:27 am

Hard to say, it just depends on how much, if any, extra damping is required.

Fast1one · 2007-10-04 4:30 am

Im thinking if just building the Suzy Chang for the B20, and adding stereo bass later if i really want to....Its so easy to build a chimp can do it, of course I always wanted to build a BLH

But we can't always get what we want...

planet10 · 2007-10-04 5:18 am

Fast1one said:
Suzy Chang for the B20,

Suzy Chang is for FE107 (FE103). Half Chang is for B20.

dave

Scottmoose · 2007-10-04 10:57 am

Fast1one said:
Its so easy to build a chimp can do it, of course I always wanted to build a BLH But we can't always get what we want...

Oook. Gibber. Scratch. etc.

In that case, I'd forget trying to go for 30Hz or lower. Go for 40Hz (which is as low as acoustic instruments, pipe-organs aside, go), and then add a couple of subs at a later date. If the box gets a little below 40 as is, bonus.

Circlomanen · 2007-10-04 11:49 am

The Decware Imperial with a B&C 15CX40???

Big BLH/BVR

15 Inch coaxial

If you will use a tweeter with a Fostex, you can just as well have the tweeter i the center of the bass-cone.

Scottmoose · 2007-10-04 1:17 pm

A fine cabinet, the Jensen Imperial. However, I think it might be a) a trifle larger than requested, and b) cost somewhat more than $60 for the drivers all-in.

loninappleton · 2007-10-04 6:33 pm

With all the qualifiers (as Scott said) I'd take a look at the Metronome

or Frugal. A recent build in the Frugal thread shows a setup that's
not near the wall and has the helper baffle flat against the wall.

You can't beat the Metronome for elegance.

Fast1one · 2007-10-04 11:06 pm

planet10 said:
Suzy Chang is for FE107 (FE103). Half Chang is for B20.

dave

Meant Half Chang

Circlomanen said:
The Decware Imperial with a B&C 15CX40???

Big BLH/BVR

15 Inch coaxial

If you will use a tweeter with a Fostex, you can just as well have the tweeter i the center of the bass-cone.

Way too much for me! I don't want to make my head explode, but thanks for the suggestion...Maybe just that speaker in a Bass reflex

loninappleton said:
With all the qualifiers (as Scott said) I'd take a look at the Metronome

or Frugal. A recent build in the Frugal thread shows a setup that's
not near the wall and has the helper baffle flat against the wall.

You can't beat the Metronome for elegance.

Thanks for those suggestions! I will look into them...

If I can find a larger coaxial type driver, bigger than the pioneer, a simple bass reflex may be in order

Thank you for all suggestions and thoughts, off to do more research

Cheers,
Serg

loninappleton · 2007-10-05 6:50 am

Fast1one said:
Meant Half Chang

Way too much for me! I don't want to make my head explode, but thanks for the suggestion...Maybe just that speaker in a Bass reflex

Thanks for those suggestions! I will look into them...

If I can find a larger coaxial type driver, bigger than the pioneer, a simple bass reflex may be in order

Thank you for all suggestions and thoughts, off to do more research

Cheers,
Serg

Just one more for the standard BR build:

http://www.geocities.com/super_bq/Hammer.html

More info at the Full Range Driver forum and

google > Hammer Dynamics for product info.

The Hammer 12 is legendary.

The elusive Horn...can I have it all?

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