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In the Forum: Horn-Loaded Speakers
In the Thread: Klangfilm: actual knowledge is better then fetish imagination
Post Subject: Too simple mistake to make.Posted by Romy the Cat on: 6/9/2010
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 msaudio wrote:
If you look at the picture second from the the top, you will see 2 woofers mounted in front on the baffle, notice a 2 piece horn from the baffle. Klangfilm never had such a horn, they would start at the baffle and curve out. The horn in your picture's starts at the baffle and move's in, the first stage, and move's out the second so to compress the output. This is a bad idea, the better idea would be to mount the drivers on the rear of the baffle with 8 inch opening to get your compresion that way, you would have more space for the right horn curve.  

Yes, you are right – I did not pay attention to it. The “step” that they at the throat and a rough transition to the horn might be questionable. I would not do it – under normal circumstances. It might be a technological defect but it also might be an intentional move.

What they did was an introduction a negative opening toward to driver – or they created a large front chamber. This front chamber will slightly increase the LF output and slightly roll off the top response of the LF drivers – that might be an objective that they had. The front chamber also changes the dynamic of the woofers damping – they might played with this – who know what kind bass drivers the use. The original Klangfilm 405 drivers came with cloth dampers on their back, so the Siemens somehow deal with the woofer damping even in open baffle.

It is hard to speculate what they were trying to do. I think it would not be difference for them: to make smooth transition from drivers to horns or to make a step, particularly the compression in step. It would cost the same amount of carpenter’s money to do it either way. I think they did what they did because ether negligence or intent. I vote for intent as I feel it would be too simple mistake to make.

The Cat

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