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In the Forum: Horn-Loaded Speakers
In the Thread: Electro-Voice T350, T35, + Fostex tweeters.
Post Subject: The use of the T90A diver...Posted by Romy the Cat on: 12/16/2008
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 mats wrote:
I have found the T90A to be reasonably in-offensive with JBL 2435 Neo/Be compression drivers. I use them with relatively small caps, currently 0,3uF. The effect is a welcoming of a higher frequency palette that to my ears does not seem incongruous with the JBL's. I notice in the article above that Bill Gaw used his 500's with a 2,2uF cap. That is a very different implementation.
With .3uF you are very far in the transition slope. This is around 60kHz filter and you roll off near 9dB of the tweeter output. There is nothing wrong with it if it is what you need to do. The Bill’s 2.2uF is 9kHz filter but he looks like used 24dB active digital crossovers. It is only God know what garbage active digital outputs and what kind amplification he used to have after it. Interesting the in my time of use Fostex drivers I also found them to be “in-offensive” but it is does not mean that continue playing with the driver it would not be possible to found a setting where it would do just fine.

The Cat

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