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In the Forum: Horn-Loaded Speakers
In the Thread: Munich High End 2010
Post Subject: L-9 is not a mysteryPosted by Joe Roberts on: 5/17/2010
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I do not know certainly how the Western Electric L-9 was made but I think it is not sealed enclosures. Some of the drivers of the period used the semi-transparent cloth enclosures that you, Joe, might recognized as sealed.


The L-9 enclosures were wood on all sides. Sealed box. No ambiguity here.

Wings were common on theater speakers for mid-bass reinforcement. Plainly audible improvement on these and, for example, A-7/A-5 VOTs. It is equivalent to in-wall mounting down to a freq determined by the width of the extensions.

There is no interference with MF and HF from the side baffles because those frequencies come out of the 60 degree horn on top of the cab, obviously.

There is nothing mysterious or technically-special about the L-9, it is just a competent Alnico WE system. Typical late 1940s pro sound engineering.


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We had the Aporias set up but we only played them at the end of the day on appointment because the WE was a very popular exhibition. We usually had 25-50 people in the room and they were digging the show so we went with it.

Also the room was huge (15x15m) which is too big for most speakers, Aporias included. How many speakers can impress in a 50 ft. square room with 50 people in it? The sweet spot can only fit three or four listeners and the other 47 would be screwed, even if it would play loud enough to overcome conditions, which it didn't. The size of the room is why we brought the WE horn.

For those really interested in Aporia, we gave them semi-private demos where the speaker had a chance to perform.

The Aporia is very limited production and we are not worried about sales, so 99% of the time we went with the antique demo that seemed to be catching peoples attention and interest.

We successfully demonstrated the Aporias at three shows already, so it was fun to switch to something offbeat. We had a great time and so did many of our visitors.

Yeah man, pimpin' is hard work...you got to be ready to adapt, improvise and, overcome! Plus you have to have the right hat.

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