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In the Forum: Horn-Loaded Speakers
In the Thread: Another time aligned 5-way horn project
Post Subject: Supravox 285 with adjustable magnetic fieldPosted by Murataltuev on: 8/28/2015
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 kodomo wrote:
I have also designed my bass horn to operate between 160hz and 600hz and it will use a supravox 285-2000. It is a 110hz cutoff tractrix horn. However I found out that, there is a modified version of this driver that suits my purposes better. It is by German Hornfabrik and they have removed the phase plug among other things as the driver does not need to operate in higher registers. This is what I am in the process of ordering today Smile 

Here is what Helmut from hornfabrik has written to me;
"The 285-2000 HF (= Hornfabrik) is characterized by no phase plug and some other features. This speaker has a higher resonance frequency and is usable from 100 to 1000 Hz. If horn-loaded from 150 - 600 a simple 6dB-filter will do (2,2  mH )and a soft RC-filter at 2 kHz. That will do. A very fine, sonor sound with wonderful mids. We use this speaker in our best horn-systems from 150 - 500 Hz."
I've got 285-2000 EXC to play with different voltages and adjust sentivity, because I expect that most sensitive channel will be this.What are you using below 150hz ?

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