How much does rear horn loading add to full range driver?

I've listened to numerous BLH Fostex cabinet designs using drivers in the 3"-8" range and  could hear usable info down to around 50Hz, depending on how close they were positioned to the front wall/corners.

This said, the sound down there was somewhat disjointed from the rest.

A few exceptions to this were (#1) speakers from The Horneshoppe.

Not certain what to call the open backed cabinet design, but the sound was nicely balanced (they used a 3"-4" driver and I only heard them once placed in corners).

The other (#2) was a wide/flat TL (open @ the bottom) that used little Ted Jordan drivers.

The cabinets I heard them in were DIY (made from some plans on the WWW).

Here's a YT video of a similar/like speaker and I think that it uses the same driver (looks the same).

DeKay

PS:

What are the speakers you are considering?

DeKay

@larryi thanks for the  Charney tip. Hadn't heard of them. @dekay , I have heard of the Jordan modules and The Horneshoppe. I was looking at $2450 Acoustic Technologies Classics. The head of the company passed away and a friend is selling them new for about $350 shipped. Just wasn't sure how much a rear loaded horn could add to a 3" driver.

Thanks,

Aldnorab 

I recently saw a pair of those on sale, for a bit more than $350, but forget where.

I considered them for our computer setup, but am already satisfied with a pair of little Polk RT15i's ($13.50 thrift shop find) which work quite well in the near-field.

They look like they would be fun.

DeKay

How much volume is gained by horn loading the rear wave? Would a horn enclosure 43 x 9 x 6" inches be likely to play lower than a ported shoebox size speaker? These wouldn't be my main speakers, just an interesting addition.

@aldnorab Rear loaded quarter wave enclosures get the deepest bass response you can get out of any enclosure design. But something to keep in mind is that no 'full range' driver is really full range; all of them benefit from woofers and tweeters.

If you can keep the excursion off of the 'full range' driver it will sound better as it will have less distortion. So you can see that the quarter wave horn concept might not win you anything.

A lot of people like the idea of no crossover and with simple musical material its seems like a good idea. But if things get complicated then they don't work so well.