It is used in some of the Seas A26 / Dynaco A25 versions and clones in stead of the Seas T35C002. May be worth a search for those on here. Also this guy has measured and used them in a number of designs, just search through his archive - https://ampslab.com/blog/2018/02/21/morel-cat-378/
There is also the Curt Campbell Slapshot that pairs this with Dayton RS180s in an MTM, there is a thread on here about this. https://rhythmaudiodesign.com/collections/speaker-kits/products/slapshot-mtm-speaker
There is also the Curt Campbell Slapshot that pairs this with Dayton RS180s in an MTM, there is a thread on here about this. https://rhythmaudiodesign.com/collections/speaker-kits/products/slapshot-mtm-speaker
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I'm guessing you have seen this ?
https://www.diyaudio.com/community/threads/fs-morel-cat378-tweeters.383339/#post-6962045
https://www.diyaudio.com/community/threads/fs-morel-cat378-tweeters.383339/#post-6962045
I've used it in some PA speakers I built and also in a two sealed design called Ergo IX bya guy named James from down under. https://pinkfishmedia.net/forum/thr...-e-ix-mini-monitor-loudspeaker-system.112821/ , It also uses a Scanspeak 15W8530-K01.
It sounded great in both applications. I really like these speakers a lot. As a rule, I have always liked Morel domes, have used a number of them over the years, and the CAT378 is no excepetion. One of the benefits that is easy to miss is that that the horn loading does not just act as a wave guide of sorts but sets the center of pressure back a bit from the baffle. That can help with good phase alignment between drivers if properly exploited by the crossover.
It sounded great in both applications. I really like these speakers a lot. As a rule, I have always liked Morel domes, have used a number of them over the years, and the CAT378 is no excepetion. One of the benefits that is easy to miss is that that the horn loading does not just act as a wave guide of sorts but sets the center of pressure back a bit from the baffle. That can help with good phase alignment between drivers if properly exploited by the crossover.
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I've used it in Curt's Slapshots, it sounds great. No idea what the crossover point is, although I would guess that it's below 2,000 Hz but that's not much help to you. As noted above, Michael Chua's website has some projects which use the Morel, such as his "Raven-CAT", I think his write ups show the XO point.
Geoff
Geoff
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The trouble with the MTM slapshot is it's a proprietary design.
You will save yourself a great deal of speculation by emailing Mike Chua for his Finch design:
https://ampslab.com/blog/2018/03/12/finch/
A thing of beauty. About 2.5kHz crossover, First Order filters. Which is not the same as 6dB slopes. Wouldn't be hard to convert it to MTM either.
I am always amazed at the foolishness of most of the DeVore Orangutan clones at this forum. They miss the main trick.
I can say no more.
You will save yourself a great deal of speculation by emailing Mike Chua for his Finch design:
https://ampslab.com/blog/2018/03/12/finch/
A thing of beauty. About 2.5kHz crossover, First Order filters. Which is not the same as 6dB slopes. Wouldn't be hard to convert it to MTM either.
I am always amazed at the foolishness of most of the DeVore Orangutan clones at this forum. They miss the main trick.
I can say no more.
If you emailed RAD and asked nicely, they might tell you the XO point for the Slapshots; also depending where you live, they might share the design for a fee; maybe not but worth a try.
Mr Chua also designed the 'Raven CAT', a three way with the CAT378, RS180P and Dayton DA270 (?) woofer. I built his Lark and Lark SM (same drivers as Lark, different cabinet and XO) and really like their sound.
Geoff
Mr Chua also designed the 'Raven CAT', a three way with the CAT378, RS180P and Dayton DA270 (?) woofer. I built his Lark and Lark SM (same drivers as Lark, different cabinet and XO) and really like their sound.
Geoff
It is an ancient design descended from Dynaudio D28. Solid piece of a product by the datasheet. I know member wintermute has one for a long time in an mtm ( midwoofers are also Morel's) design + sub so he might give you more information.
What are the issues with the Orangutan clones, in your opinion? And what is the main trick?
Lament, you need an LCR conjugate here. Impedance correction. Otherwise it doesn't really work.
https://ampslab.com/blog/2018/03/12/finch/
Regards, Steve in Portsmouth, UK.
https://ampslab.com/blog/2018/03/12/finch/
Regards, Steve in Portsmouth, UK.
You mean to flatten the impedance of the tweeter? I.E. Take out the resonant spike, the rising inductive load or both?