The DIYSG Magnum 12 General Discussion Thread - Page 3 - AVS Forum | Home Theater Discussions And Reviews
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post #61 of 74 Old 08-11-2017, 07:35 PM - Thread Starter
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The DIYSG Magnum 12 General Discussion Thread

Matt great work on this kit it looks great! If someone one built a bigger slot ported box for the magnums instead of sealed modules would it still work with the crossover design.

Last edited by eng-399; 08-11-2017 at 08:42 PM.
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post #62 of 74 Old 08-11-2017, 09:07 PM
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Yes larger ported enclosures would work with the same crossover design.
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post #63 of 74 Old 08-11-2017, 10:05 PM
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Originally Posted by mtg90 View Post
Yes larger ported enclosures would work with the same crossover design.


My double 1.77cuf boxes and the CD/mid range section would work well with out needing to rework the cross over? Is this the exact same section from the titan?


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post #64 of 74 Old 08-12-2017, 09:40 AM
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Just to make it clear the crossover from the Titan-615 or 615LX will not work with the magnum woofers (at least not optimally). The crossover for the new Titan-612DC works fine with those woofers in sealed or ported enclosures.

For most speaker designs switching from sealed to ported or vice versa does not require crossover changes.

It's not noted anywhere but you can run the 615's sealed if you wanted or plug one port and have ~28hz tuning instead of the normal 40hz for possibly more low end extension if room gain is good.
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post #65 of 74 Old 08-12-2017, 09:49 AM
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Ok guys. Thanks for being so patient and helpful with me here. I'm trying to learn on the fly. I have another question.
What differentiates this design from say, the Fusion 12 or even Fusion 15 in terms of output, frequency response, etc. It seems that all three are designed with roughly the same frequency range and price points.
Since I've never heard any DIYSG speakers, I have no point of reference to determine differences. Thanks again.
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post #66 of 74 Old 08-12-2017, 11:02 AM
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Originally Posted by tk123 View Post
Ok guys. Thanks for being so patient and helpful with me here. I'm trying to learn on the fly. I have another question.
What differentiates this design from say, the Fusion 12 or even Fusion 15 in terms of output, frequency response, etc. It seems that all three are designed with roughly the same frequency range and price points.
Since I've never heard any DIYSG speakers, I have no point of reference to determine differences. Thanks again.
For starters those are two way designs, so horizontal centers are a no-no. The woofers cover more of the midrange so they give up bass capability to do that. Which is a common 3way vs 2way trade off. Those also use the very good seos waveguide and we're talking about coaxials and other horns. Different devices to accomplish different objectives. The nice thing about a coaxial design is you could use the coax portion for surround duty and get a uniform timbre around the room.

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post #67 of 74 Old 08-12-2017, 11:26 AM
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The coaxial design you mention, I assume is the tweeter/midrange horn combination.
I saw another thread that discusses a Fusion 8 Tower build with a larger enclosure to increase low frequency output. Maybe that's the kind of thing I'm looking for. Or even the Cohesive 893 ported. Don't really know.
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post #68 of 74 Old 08-12-2017, 01:17 PM
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Yes the coax is a mid and tweeter combo.

A ported 893 can extend pretty low.

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post #69 of 74 Old 08-12-2017, 01:52 PM
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tux, do you have any knowledge about the ported 893? There are no details on DIYSG website about it other than the difference in frequency response compared to the original. I haven't seen anything about it.
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post #70 of 74 Old 08-12-2017, 04:46 PM
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Quote:
Originally Posted by tk123 View Post
tux, do you have any knowledge about the ported 893? There are no details on DIYSG website about it other than the difference in frequency response compared to the original. I haven't seen anything about it.
The 893 thread got nuked by the photobucket scam

What would you like to know? I designed the speaker if you weren't aware. So any questions about it I can help with.

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post #71 of 74 Old 08-12-2017, 04:58 PM
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Before the talk of the titan 612, the 893 was my favorite speaker on the DIYSG website. When I'm ready to move from my klipsch towers it's going to be a tough time to which one I pick.


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post #72 of 74 Old 08-12-2017, 05:12 PM
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Quote:
Originally Posted by tuxedocivic View Post
The 893 thread got nuked by the photobucket scam

What would you like to know? I designed the speaker if you weren't aware. So any questions about it I can help with.
Well. Sorry we got so far off topic here. Not intentional.
I found the "Lil Bro to the 1099" thread that discusses the 893 from start to finish. I read through it but think I need to read it again. Lots of cool stuff and good info there !
I'm thinking that no matter what size ported enclosure you use, the crossover remains the same, correct?
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post #73 of 74 Old 08-12-2017, 10:54 PM
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From my understanding is this only applies to the low end. If you change cross over frequency then it would.


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post #74 of 74 Old 08-14-2017, 10:03 AM
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I feel responsible for derailing this thread. Sorry guys. So, bump
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