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In the Forum: Horn-Loaded Speakers
In the Thread: JBL 2226 2445 2405 3-way and a path forward
Post Subject: 250hz horn at 1k?Posted by Jorge on: 1/16/2014
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Hello Dan,

Love how you pass that cable through the port,  I used to do that too...long time ago.

Why are you crossing your 250hz horn all the way up to 1 khz?
The 2445 should be able to go much lower. 
Have you measured the response you are getting from the horn? 
Get an RTA and measure what response can you get out of that horn-driver configuration.
I am sure you can get down to at least 500hz,  It probably wont go much higher than 6 or 7khz but you got your tweeter for that.
This will free the woofer from playing all the way up to 1khz....
It should sound better.

If you want to go crazy try the horn-driver combination by itself full range at very low volume and see how far down it can go and still sound
good. A 250hz horn is a big one and should go lower,  the compression driver is the one that will have trouble. 
Maybe get a phenolic diaphragm and make it go down to 300hz  and  a midrange horn from maybe 1khz up to the tweeter.
If you are into JBL there is a phenolic phram driver out there people swear by,  forgot the number.
Get rid of the minidsp and buy a bunch of caps and coils! (not the ribbon ones)

Of course an upper bass horn (100-120hz) is always better...

Just my 2 cents

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