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80Hz horn with 2206 [message #50230] Wed, 08 November 2006 01:49 Go to next message
andreas paulsen is currently offline  andreas paulsen
Messages: 50
Registered: May 2009
Baron
Hello

I have tried to model a 80Hz conical horn with hornresp using the jbl 2206. So far with some luck. I am thinking a 3 foot conical horn with a throat of 30 sq.inch and a mouth of 400 sq.inch. Similar to a old post in this forum about a 80Hz Horn. I am just unable to get the smooth response seen in the 9pi model of the 2226 done by Wayne. Or
by the models done elsewhere by volvotreter for the EV15L woofer.

Suggestions about throat size, back chamber, front chamber are more than welcome?

Cheers
Andreas

Re: 80Hz horn with 2206 [message #50231 is a reply to message #50230] Wed, 08 November 2006 08:31 Go to previous messageGo to next message
Wayne Parham is currently offline  Wayne Parham
Messages: 18783
Registered: January 2001
Illuminati (33rd Degree)

The midbass horn in my 9π is similar to what you've described, but it uses a JBL 2226 instead of a 2206.

Re: 80Hz horn with 2206 [message #50232 is a reply to message #50231] Wed, 08 November 2006 08:49 Go to previous messageGo to next message
andreas paulsen is currently offline  andreas paulsen
Messages: 50
Registered: May 2009
Baron
exactly!

But I seem to get more ripple in the response when I put the parameters for the 2206 instead of 2226?

/andreas

Re: 80Hz horn with 2206 [message #50233 is a reply to message #50232] Wed, 08 November 2006 12:29 Go to previous messageGo to next message
Wayne Parham is currently offline  Wayne Parham
Messages: 18783
Registered: January 2001
Illuminati (33rd Degree)

Yes, the driver is an important part of the system, and its electro-mechanical parameters are a determiner of overall performance.


Re: 80Hz horn with 2206 [message #50234 is a reply to message #50233] Wed, 08 November 2006 14:40 Go to previous messageGo to next message
andreas paulsen is currently offline  andreas paulsen
Messages: 50
Registered: May 2009
Baron
Hello again

Is this completely out of line? I do not like the ripples, but as the horn will be placed in a corner it might flatten itself out.
this is the first time I try to add pictures, so be patient with me.


/andreas

Re: 80Hz horn with 2206 [message #50235 is a reply to message #50234] Wed, 08 November 2006 19:27 Go to previous message
Wayne Parham is currently offline  Wayne Parham
Messages: 18783
Registered: January 2001
Illuminati (33rd Degree)

Looks pretty good to me. I didn't double check your inputs; I'm assuming you've done that right. The radiation angle is half-space, which is about what you'll have indoors in average sized rooms. If placed near corners or if groups of horns are used, you'll have a little better response. As it is, your horn is flat 90Hz to 400Hz +/-2dB in half-space and I think that's pretty good.


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