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Multi-Way Conventional loudspeakers with crossovers

Best waveguide under 17.75x6.75" mouth for The Selenium D220Ti
Best waveguide under 17.75x6.75" mouth for The Selenium D220Ti
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Old 11th May 2018, 06:55 PM   #11
Godzilla is offline Godzilla  United States
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I never heard the Selenium compression driver but can offer these comparisons. Honestly, I think you might need a 1.4 or 2 inch compression driver to match well with a 15 inch woofer. The tweeter really should get below 1kHz.

Perhaps consider one of these?
Eminence N314T-8 1.4" Neo Compression Driver 8 Ohm 4-Bolt

With one of these:
FaitalPRO LTH142 1.4" 60 x 50 Elliptical Tractrix Horn 4-Bolt

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


FaitalPRO HF144 1.4" Neodymium Compression Horn Driver 8 Ohm 4-Bolt


Here are my listening (and very amateurish) measuremnt tests.

Waveguide Comparison using Dayton Audio DT250P | Speaker Projects by Zilla

https://speakerprojects.wordpress.co...us-waveguides/

https://speakerprojects.wordpress.co...enium-hm25-25/
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Old 11th May 2018, 07:26 PM   #12
ScottG is offline ScottG  United States
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I'm assuming a bolt-on version of the Selenium (not screw-on)..

Denovo Audio SEOS-15™ for dome tweeters


..ask when it will be back in stock.


-and a backup solution:

RCF H100 1" Horn 90x75 3/4-Bolt


..and for a lot more money and (generally) requiring a supertweeter, with more low-end extension: AH-550

Azurahorn -Le Cleac'h Acoustic Horns - Products
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Old 11th May 2018, 07:53 PM   #13
ScottG is offline ScottG  United States
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..preferable 1" exit compression driver:

Peerless by Tymphany DFM-2535R00-08 1" Compression Horn Driver 2/4-Bolt 8 Ohm
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Old 11th May 2018, 08:22 PM   #14
ScottG is offline ScottG  United States
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..oops, didn't meet the vertical limitation.
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Old 11th May 2018, 08:34 PM   #15
StainlessSteve is offline StainlessSteve  United States
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I do have the screw-in drivers.
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Old 11th May 2018, 08:50 PM   #16
bwaslo is offline bwaslo  United States
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Best waveguide under 17.75x6.75" mouth for The Selenium D220Ti
Quote:
Originally Posted by hweb View Post
The venerable QSC waveguide (no longer available) is awesome. This one: B-52 PHRN-1014 1" Horn 10" x 14" Bolt-On appears to be identical. It should unload at around 1050Hz. The PH612 should unload at around 1400Hz, so if you plan on mating this with a 15" woofer you might prefer the larger waveguide.
That does look like a QSC clone, and if so is one heck of a nice waveguide. (It isn't, btw, in any way an "exponential horn" as it says in the listing! It's a conical with an oblate-spheroid-like throat). Years ago I made a 2-way with the bolt-on D220Ti and a Large Advent woofer -- it was one of my favorite speakers, still in use at my son's house. It sounded a LOT better to me than the original Econowave (JBL designed) horn, not sure if that had to do with the bolt-on driver vs. the screw-on one of the JBL. The QSC horn also works really well with that Tymphany driver mentioned elsewhere in this thread (I'd toss your screw-on Seleniums in the bin and get a couple of the Tymphany's if I were you..... but then I hate screw-on compression drivers because of that inherent straight pipe section).

I have several of the QSC clones here, for whatever reason, but I'm still tempted to pick up some more of these buyouts "just because".
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Last edited by bwaslo; 11th May 2018 at 08:52 PM.
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Old 11th May 2018, 09:01 PM   #17
ScottG is offline ScottG  United States
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Quote:
Originally Posted by StainlessSteve View Post
I do have the screw-in drivers.
..probably better off making your own straight-side horn in the dimensions you want, otherwise you won't get the extension you want in the form-factor you demand.

(aka: to many limitations and no reasonable commercial solutions.)
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Old 11th May 2018, 09:40 PM   #18
StainlessSteve is offline StainlessSteve  United States
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Anyone wanna buy two Selenium D220Ti's?

Last edited by StainlessSteve; 11th May 2018 at 09:55 PM.
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Old 12th May 2018, 01:21 PM   #19
Godzilla is offline Godzilla  United States
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Goldwood GM-500PB 1" Horn 1-3/8"-18 TPI

In the comments someone mentions using these with the Seleniums. They are similar in size to the 15 inch SEOs previously mentioned. Depending on your budget they might be worth considering.
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Old 12th May 2018, 02:22 PM   #20
turnitdown is offline turnitdown  United States
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I am a huge proponent of the Econowave and the Selenium is a proven winner on the JBL/Pyle wave guide. If you build that, you will be pleased.

First, Wayne Parham uses a 15" 2226 to meet the HF element. It has slam and mid range that is true to the source material. A 15 to a 1 inch works. Now...

keeping that thought in mind, the econowave loses nothing if you're using a good 15" mid/woof. The econowave features an asymmetrical crossover. The mid/woof has to play well up to about 1200 but the crossover to the horn is much higher. The mid/woof signal is decaying while the horn/CD is coming in. The crossover acoustical point is around 1360 while the electrical crossover points for each driver are different - but they blend well in the middle frequencies. Beam width on both drivers is very close at the actual crossover point.

There are then avenues open to upgrade as you see in various places, but the crossover and the concept are proven as demonstrated by the number of these that were, and are, being built.

That being said, if this is your first build, or first horn build - try it. You have the parts and it fits your requirements.
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