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Multi-Way Conventional loudspeakers with crossovers

15" 2-way Ideas
15" 2-way Ideas
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Old 31st January 2018, 02:09 PM   #21
BobtheBuilderMLG is offline BobtheBuilderMLG  United States
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What the reasoning for smaller drivers sounding better? I figured the bigger the driver the lass distortion it would play at the same volume level.
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Old 31st January 2018, 03:05 PM   #22
BobtheBuilderMLG is offline BobtheBuilderMLG  United States
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Also anyone have experience with the new Peerless DFM-2544R00-08 1" Compression DFM Driver 8 Ohm?

Peerless DFM-2544R00-08 1" Compression DFM Driver 8 Ohm
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Old 31st January 2018, 07:31 PM   #23
Audio Elite is offline Audio Elite  South Africa
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Originally Posted by BobtheBuilderMLG View Post
So I got 46hz with the Beyma. Doesn't seem to be that much better except for sensitivity and size of enclosure.am I missing something?
The 15PR400 is far superior sounding than the Emmy. I have used them extensively and they are very clean with really good mids.

You just cant compare the two as far as sound goes!
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Old 31st January 2018, 09:09 PM   #24
BobtheBuilderMLG is offline BobtheBuilderMLG  United States
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What about the FaitalPRO 18HP1010 its not that much more expensive, heres a link to it. FaitalPRO 18HP1010 18" Professional Subwoofer 8 Ohm

Here's a way cheaper 18" Dayton Audio PA465S-8 the link is
Dayton Audio PA465S-8 18" Pro Subwoofer 4" VC 8 Ohm

Would the Dayton be that much worse in SQ? Sensitivity is down quiet a bit though.

I'm back to the 18" idea I need to find a 10" midrange then and it will break my budget but that just means Ill by parts not all at once and build as I go.

That 18" fatal though is my favorite so far.
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Old 31st January 2018, 11:44 PM   #25
Charles Darwin is offline Charles Darwin  United Kingdom
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I think you might struggle making a good 2way with an 18".

You'd probably have to get a 2" compression driver and a rather large horn.
Great for a 3way though.
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Old 31st January 2018, 11:51 PM   #26
John Busch is offline John Busch  United States
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With the right 18" it can be done. Comes down to how loud it needs to play.
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Old 1st February 2018, 12:07 AM   #27
gabdx is offline gabdx  Canada
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I like the sound of big drivers in big baffles , yummy

For high frequency they beam and sound poor.
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Old 1st February 2018, 12:27 AM   #28
Charles Darwin is offline Charles Darwin  United Kingdom
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If you go the 3way 18-10-cd route you can always start with a 10" 2way and add the 18 later.

That way you have usable speakers while saving up for the 18.
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Old 1st February 2018, 12:49 AM   #29
hazard500 is offline hazard500  Australia
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Originally Posted by BobtheBuilderMLG View Post
So my plan is to make a 15" 2-way very dynamic massive speakers. Im new to building so would love any feedback.

Driver I'm think of would be a Beyma SM115/N 15" woofer
Beyma SM115/N 15 inch low frequency loudspeaker 400W | Loudspeaker freaks

and a Eminence N314T-8 CD
Eminence N314T-8 1.4" Neo Compression Driver 8 Ohm 4-Bolt

with a Eminence H14EA horn
Eminence H14EA 1.4" Cast Aluminum Exponential Horn 60x40 4-Bolt

For the crossover I would add an L-Pad 13 db or so on the CD and using a 3rd order crossover point of 1000 hz. the reason why I chose 1000 hz is because distortion on the CD seems to rise very fast see attached image and at 1000 hz I figured the woofer wouldn't have a real issue with beaming. I also choice a 2-way so that there would be less error in the crossover.

For the enclosure it would be around 6 cubic feet vented and hope to get at-least around 40hz before my 3db drop off. I also want to design the enclosure around the vintage JBL monitor look.

A few questions I have is is am I being realistic with my expectations of these drivers? I also have a mini dsp I use for my dual 21" subs I could use for this project at least for the woofers don't like the idea of using a dsp on the tweeters. I'm not keeping the subs so why not.

Here's a link the an artical on the CD Test Bench: Eminence N314T-8 with H14EA Horn and N320T-8 with H2EA Horn
Bob, I started a similar thread a few days ago in the full range thread.

Like you I want to build a 2 way with 15" subs. I am going open baffle as I have been using magneplanars and ribbons for 25 years and I can't listen to boxes anymore (box resonances stick out like a sore thumb since I am so unaccustomed to them).

I have been inspired by the layout of the PureAudio Project speakers. Damn easy to make as a diy project.

New ! PAP-Horn1 Trio15 Speakers – PureAudioProject

For woofers, I was considering buying a set of OEM Eminence drivers that PureAudio sells but shipping to Australia makes them expensive. I have found that I can buy FaitalPro 15PR400 from local distributor for a significantly lower price, and as you can see in this thread, many people consider these better then Eminence drivers so its a win win for me. So they are on my shortlist. Beyma woofers are good I am sure but there is no Australian distributor and they are too expensive to import.

I have considered CD. Disadvantage I see is that crossover is going to be around 1k and I prefer to limit the woofer somewhat lower. So I am looking at a full range driver (6 to 8 inch) for the mid/tweeter driver. Still looking at lots of alternatives for this, have you thought about FR drivers or are you committed to CDs?

I already bi-amp my magneplanars panels, with a passive line level crossover at 660Herts to my diy ribbons. So I will keep this for the new system, good thing about my crossover is that I can change it in minutes with a few cheap caps. No need for big inductors or large caps.

Will be interested to see how your design pans out.
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Old 1st February 2018, 01:11 AM   #30
globalplayer is offline globalplayer  Germany
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Fane Sovereign 12-250TC from ~ 80...120 hz on up and
Faital Pro 15PR400 for everything below ~ 80...120 hz.
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