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Old 24th July 2015, 12:19 AM   #1
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Join Date: Oct 2001
Location: Victoria, BC, NA, Sol III
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Default The Frugel-Horn Family

The 1st Frugel-Horn debuted in 2006. 4 years later in 2010 a much improved revision, the Frugel-Horn Mk3, was released. In 2013 a larger Frugel-Horn XL, and in 2015 a smaller Frugel-Horn Lite became a reality.

Today i took the 1st pics of all 3 together.

Click the image to open in full size.

One of the design goals has been to be able to easily support many drivers in each design. The results have exceeded all expectations. The use of a tapped hypex horn with internal choke, after Olson, with the judious use of damping allows for all these different drivers -- adjust the damping for the driver, the room (& placement in the room), as well as your taste in bass quantity and away you go.

Scott Lindgren gets credit for the design of the current horns, Ron Clarke deserves mention for coming up with the curved mouth which allows a rectangular mouth to act more like an ideal circle, David Dlugos (me) for drawings & web-site, Chris Bobiak for blasting out prototypes, and the legions of diyers who have made these horns a huge hit. Cottage-industry commercial manufacturers & makers of flat-pak makers have popped up in diverse locations.

Website: The Frugel-Horn (i am working thru a revision as we speak to bring it up-to-date)

There are lots of threads but here are the main ones:
Frugel-Horn Mk3
Frugel-Horn Mk3 Builds & Build Questions
Frugel-Horn Mk3 Picture Gallery
Frugal Horn Mk3 builds - audio-talk
Driver preference for Frugal horns

Frugel-Horn XL for Alpair 10.3/10p

Frugel-Horn Lite for 3" drivers

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Old 24th July 2015, 11:41 AM   #2
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Love them!!! Thanks to all
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Old 24th July 2015, 01:40 PM   #3
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Those look fantastic. Especially that curved edge walnut(?) finish on the XL!

Must take up quite a bit of floor space .
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Old 24th July 2015, 02:13 PM   #4
PJN is online now PJN  United States
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Great work that I have followed with much interest over the years. Thanks to all involved for such a generous gift to the community.

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Old 24th July 2015, 03:07 PM   #5
chrisb is online now chrisb  Canada
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Originally Posted by monty78pig View Post
Those look fantastic. Especially that curved edge walnut(?) finish on the XL!

Must take up quite a bit of floor space .

Monty - yes that's Walnut on the XL,s quarter cut Sapele on the FH3s, and raw BB ply on the lites - rough sizes* are as follows:

FH Lite - 387mm D x 126mm W x 767mm H (15.25" x 5" x 30.25") shown with FF858WK
FH3 - 450mm D x 170mm W x 900mm H ( 17.75" x 6.75" x 35.5") shown with FE126E
FHXL -543mm D x 223mm W x 967mm H (21.375" x 8.75" x 38") shown with Alpair 10.3

* our builds / kits have standardized at 15mm ply for all panels except for 18mm for front baffles
-DIYers have used different thicknesses of materials, so adjust accordingly
- the first pair of FH lite prototypes were done in 12mm (1/2" ) ply, because there was sufficient offcuts on hand, so would grow a bit in each dimension with thicker material

Now is as good an opportunity as any to invite builders who've not already done so to forward a picture or two of their builds to Dave for inclusion in a gallery at the FH website. As the plans for these are "freeware", I for one am curious as to how many have been built - with our own builds, and kits shipped domestically in NA, our own count must be close to 100.
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Old 24th July 2015, 03:35 PM   #6
chrisb is online now chrisb  Canada
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Note that the test mule of the "lite" has a removable mounting panel for testing different drivers - so far we'd tried the FF85Wk, and a couple of others, I think - I have trouble keeping track these days.
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Old 24th July 2015, 03:58 PM   #7
jjcarr is offline jjcarr  United States
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I really like my FH3, but lately I've fallen in love with the TB W8-1808 driver in my OB design. I'm really tempted (some day) to put that driver in a scaled up FH design, as that does amazing things with the little 4" driver.
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Old 24th July 2015, 04:29 PM   #8
chrisb is online now chrisb  Canada
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"scaling-up" is not always that simple - or even possible - but if it was for this driver, the enclosure would be freaking huge

FWIW, I've heard the 1772 in several systems built for a non-member of these forums - including as OB midrange in 3-way with JBL 2225 and Dayton AMT tweeter - and if this series of TB bear as much family resemblance as the numerous Fostex and Alpairs that I've heard in very wide range of enclosures, I'd be inclined to stick with what works. IOW, if you're in love with the OB's, anything else might be underwhelming.
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Old 24th July 2015, 05:58 PM   #9
freddi is offline freddi  United States
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really cool accomplishments and gifts to the community
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Old 25th July 2015, 02:39 PM   #10
gioz is offline gioz  Italy
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Wich is the best for classical (symphony) and jazz music?
...I have a 2A3 set or 2A3 PP
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