PD186 tapped horn?

[Andywardle]

Hi there,

Anyone tried modelling a Tapped Horn for a PD186?

If so, details please!!

Thanks,

Andy

 

[bjorno]

FYI

b

 

[Xoc1]

Hi Andy
Did you have any particular application in mind?
Are you looking for bass extension for a home sub or efficiency for PA use.
I think that the 18" PD drivers are quite suitable for PA usage in a tapped horn, and used with a decent hi-pass filter should be able to take conciderable amounts of power before running out of x-max.
I haven't built any of the speakers that I have modelled up yet, but have a mate who has 8 off PD1850 drivers so its something that I am working on.

 

[Andywardle]

Thanks for that Bjorno - looks promising!

 

[Andywardle]

Hi Xoc1,

Looking to use for PA applications from 35 up to about 90 Hz to get as much thump as I can out of 4 drivers so if OK will make four of 'em and hopefully make some eyes move

Cheers,

Andy

 

[bjorno]

Thanks for that Bjorno - looks promising!

Hi Andy,

Wasn't sure, At first I simulated for home use, not for PA in particularly.
Here is an PA attempt:

b

 

[Andywardle]

Looks even better in terms of SPL, Frequency range and Impulse response....

Next step: get some box dimensions worked out, build a prototype.. Will let you know how it turns out!

A

 

[Xoc1]

Hi Andy
Bjorno,s sim looks very good, but are you OK with the size of these speakers.
They will be the same sort of size as J Bells large tapped horns. Look at post 38 here:-
http://www.diyaudio.com/forums/subwoofers/127908-jbells-set-four-tapped-horns-4.html
IE: OK for an install, but not really what most people would concider portable!
In fact if you substitute the PD186 parameters into Dons sim for the J Bell cab it works well. Probably would need a minor tweek to lengthen the baffle to suit the 18" driver.