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ejfud 5th March 2011 08:10 PM

Back Loaded BestyK's
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About 6 months ago I traded with a local audio buddy for a pair of BetsyK's. I've been wanting to build Paul's TL's for them, but my wife has had other ideas for what I should be doing in the shop. So they have waited patiently for a home.

Over a year ago another audio buddy left me with a pair of old school horn cabinets that he was going to throw out. They made it in from the garage finally before winter and a few weeks ago the BetsyK's found their way into the cabinets. The cabinets are far from a great design for a fullranger. You can see why in the pictures. Heck, I don't even know what the design is.

Overall results.....other than the fact that most of the highest highs get eaten up by the driver being so far back in the cabinet, they sound very good. Bass is the thing that has really amazed me. And if seated with the drivers at ear level, there is more than enough high end. As I have always thought these Wild Burro drivers are really a great buy.

Next I'll put them into an old sealed cabinet and see what they can do with a little sub assistance.

tinitus 5th March 2011 08:17 PM

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that's what I would call a heavy beauty :hbeat:

most horns built in the old days were never calculated properly
or were used with wrong drivers
it was mostly a case finding the right driver :smash:

Original older Lowthers had drivers mounted a bit back, like yours
mainly because they had front baffle tilted
the clever Lowther guys solved the problem by mounting small waveguide baffles around the driver

maybe you could use a bit of felt here and there
and I would tilt the horn slightly backwards

ejfud 5th March 2011 08:55 PM

They may work. I was thinking about cutting down the cabs with a straight edge and circular saw.

d to the g 13th March 2011 02:55 PM

betsyk, the midwoofer?

freddi 13th March 2011 03:05 PM

SWEET BetsyK has a really nice cone - you could use cardboard to test the waveguide idea

chris661 13th March 2011 04:00 PM


Originally Posted by ejfud (
They may work. I was thinking about cutting down the cabs with a straight edge and circular saw.

The cabinets look quite nice, so I'd try tinitus's foam idea first, as it's a very quick thing to try.

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