Cornwall III conversion to 2 way

[Ouachita]

I noticed the new KPT-310-M in the pro lineup is basically a cornwall (K-33 woofer) with the horn from the Epic CF3/4.  Not sure about the K-70 compression driver.

 

Any idea what the crossover frequency is in the KPT-310?  My guess is 600hz.

 

What would I need to convert my CIII to 2 ways utilizing the KPT-310 parts?

[derrickdj1]

Why? what are you looking for sound wise?

[Ouachita]

Getting the crossover to a compression driver down to the original 600Hz point and eliminating the tweeter.

 

I guess it'd be easier to just sell the cornwalls and buy the KPT-310

[moray james]

Take a look at the Bob Crites Cornscala "D" type two way  and then give Bob a call to discuss. I like this design.

 

http://www.critesspeakers.com/cornscala-style-d.html

[wvu80]

You have a good eye!  That really does look like the CF-3/4 horn.

 

I think the XO for the CF-4 horn was 600 Hz as I think the CF-3 horn model was the K-603. 

 

FYI the compression driver for the CF-4 is the K-63-N, which is different from the K-70-G being used in the KPT-310-M.

[Ouachita]

Any idea where/how to get pricing or order the cinema line?

[Coytee]

I'm not familar with those horns....nor their size.

 

That said, you might look into the K510 horn which is a 2" format.  I don't know if you can do it without heavy modifications of the crossover, I think an active would be easier.

 

The K510 would have the K69 tweeter driver attached to it (and is the driver used in the 2-way Jubilee setups)

[CECAA850]

Any idea where/how to get pricing or order the cinema line?

 

American Cinema Supply I believe.

[Chris A]

Any idea where/how to get pricing or order the cinema line?

 

http://www.cinequip.com/service.htm

 

Talk to Spencer.

 

I'd think that the HF horn that you're looking at on the KPT-310-M is a new model K-510 horn, i.e., the one with "mumps".  I've got two of them that I've used on my bi-amped and tri-amped Belles.  I recommend that horn with a good 2" full-range compression driver - like Crites uses on the "D" Cornscala, or the B&C DE750 upgrade driver from CInequip.

 

Chris

[Marvel]

They use the same horn (K510) in the KPT-396 (and KI-396), which comes with a single 15 inch woofer. They cross it at 1Khz, though.They sell it as a surround speaker.

 

Bruce

Edited May 13, 2016 by Marvel

[Ouachita]

The horn is a K-603 from the Epic CF3/4 line.

[Marvel]

I'd think that the HF horn that you're looking at on the KPT-310-M is a new model K-510 horn, i.e., the one with "mumps".

Those look like the older style K510 without the 'mumps', and the literature says it's a K603 horn.

 

Bruce

Edited May 13, 2016 by Marvel

[Chris A]

You're right - I was looking at this--the KPT-325: https://community.klipsch.com/index.php?/topic/152256-new-klipsch-pro-kpt-310m/?p=1778322

 

http://e994010f48279d85b5d7-a0bc3fbf1884fc0965506ae2b946e1cd.r57.cf2.rackcdn.com/product-specsheets/KPT-325-Data-Sheet-v03.pdf

Edited May 13, 2016 by Chris A

[Ouachita]

Yup- that's a better driver/horn - probably more expensive.  Those would certainly be nice as well.

[Ouachita]

I wonder how different those speakers sound compared to a CWIII?  What intrigued me about the KPT-310 is that is uses the K-33 woofer.

[Chris A]

There is a reason why I recommended the 2" throat K-510 horn--and it's not that it costs more.

 

The woofers in the KPT vented boxes are typically K-43s, which are nothing but more robust K-33 woofers.  The different numbers for the bass bins are for the different boxes.