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In the Forum: Horn-Loaded Speakers
In the Thread: Munich High End 2010
Post Subject: Wet animalPosted by Joe Roberts on: 5/18/2010
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That is a bold waste of speaker’s surface for a small result.


Yeah, but plywood is cheap and the result is audibly noticeable. Baffle extensions were recommended for all of the Altec VOT cabinets too. Make a big improvement for cheap if you have the space.

As the frequency decreases and output becomes more omnidirectional, the baffle provides a +3dB reinforcement like a close wall would. With 250hz around 5ft wavelength you can get a good mid-bass boost with a sheet of plywood.

Unfortunately all, absolutely all with no exception speakers with open baffle (including with the “wings form mid-bass reinforcement”) suffer from the fact that the large vertical surfaces of their baffle flatten out the upper frequency.


It is not "open baffle" and the upper frequencies come out of the horn which is above and apart from the baffle. 800hz crossover.

Have another look at the picture. You are confusing this L-9 with some other topology, I think.

The upper frequency starts to be fluffy and reminds a fur of wet animal. To “cure” it people inject more amplitude in HF, overloading the initially sub-sized horns. This is what many Morns call “vintage sound”. Ironical to demonstrate the problem is very simple – juts to toss a hairy blanket/carpet atop of large baffle. Of course then the blanket will cover the WE logo and then many audio “writers” will have no subjects to write….


That WE logo must be very powerful since at least 20 online show reports named this old junker "Best of Show"!  Most of the German forum threads have a few guys who thought it was the best thing there.

We were quick to remind everybody that this was a second-rate WE system but they didn't seem to care. To my ear it was a bit more "vintage sounding" than the field coil WE gear and it wasn't "perfection" but at least it had some soul, which most of the plastic speakers at the show lacked.

Also, for many of the visitors this is the first time they heard a decent sized horn and that probably explains a lot of it.

We are tempted to bring a theater-type system that is a step above the L-9 next year, since this was such a hit.

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