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Multi-Way Conventional loudspeakers with crossovers

15" 2-way Ideas
15" 2-way Ideas
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Old 30th January 2018, 11:52 PM   #11
LineSource is offline LineSource  United States
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Quote:
Originally Posted by BobtheBuilderMLG View Post
How low does that woofer go and what sensitivity? That box looks small.
For 6cuft ported volume tuned to 34Hz the 15PR400 simulates -F3 ~42Hz (i.e. 93db --> 96db).
Placement near walls can boost the low freq bass, and so a modest bass-shelf alignment is sometimes used to tune the port.
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Old 31st January 2018, 12:05 AM   #12
ScottG is offline ScottG  United States
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Though quite a bit more expensive, this combo will handsomely exceed the Eminence in performance - allowing a crossover around 700 Hz..

18 Sound ND1460A Neodymium High Frequency Driver

18 SOUND XT1464 Horn Flare


PaulW has experience with this combination. Among other qualities - impedance is almost flat to below 700 Hz which should make the resulting crossover much less costly. (..also, distortion is low to 700 Hz.)

Paul used them in this design, but unfortunately the all important images of just how good the result was are missing..

The Raptor ... a 10" MTM

18Sound | ND1460A

XT1464



-as for the woofer, I'd ask Loudspeakers Plus for a pair of 18 Sound 15W 500's. (..for their very low mms.) (..they don't stock the drivers, but they are a partner with 18 Sound.)

http://www.18sound.it/Products/Artic...id/3383/15w500
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Old 31st January 2018, 12:07 AM   #13
BobtheBuilderMLG is offline BobtheBuilderMLG  United States
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Quote:
Originally Posted by LineSource View Post
For 6cuft ported volume tuned to 34Hz the 15PR400 simulates -F3 ~42Hz (i.e. 93db --> 96db).
Placement near walls can boost the low freq bass, and so a modest bass-shelf alignment is sometimes used to tune the port.
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?
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Old 31st January 2018, 12:09 AM   #14
LineSource is offline LineSource  United States
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JBL 4345 used 18" woofer + 10" midrange + 1" CD tweeter + 0.725" slot supertweeter.

Modern 3-way (1" CD @1200Hz + 12" midbass @150Hz + 18" woofer)
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Old 31st January 2018, 12:13 AM   #15
BobtheBuilderMLG is offline BobtheBuilderMLG  United States
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Im dumb, haha not sure what I was thinking there. Id be interested in a 18" but I would have to have a 3 way then Im trying to not to exceed 1000$ for everything.

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Originally Posted by ScottG View Post
Though quite a bit more expensive, this combo will handsomely exceed the Eminence in performance - allowing a crossover around 700 Hz.. <snip>
much better just wish it was titanium.

also I prefer the drivers to be cast. Dont like the look of stamped.

Id be willing to try plastic out just scared ill waist money on something im not completely satisfied with.

Thanks everyone for the help, I think I'm going to switch my woofer to the FaitalPro seems to be a better overall woofer. I also might look into a 18" driver and just go 3 Way.
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Old 31st January 2018, 02:33 AM   #16
ScottG is offline ScottG  United States
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much better just wish it was titanium.
..why would you want that?

Titanium has a LOT more distortion near resonance and it only extends about 1500 Hz higher in freq. before break-up.. but can break-up "harder". (..note the differences in break-up between the titanium version and the aluminum version.)

Aluminum also tends to sound better as well.


-btw, that driver in that horn is extremely "flat" up to break-up.


..but, if you want Titanium, here it is:

18 Sound ND1460 Neodymium High Frequency Driver

18Sound | ND1460
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Old 31st January 2018, 02:39 AM   #17
globalplayer is offline globalplayer  Germany
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Thanks everyone for the help, I think I'm going to switch my woofer to the FaitalPro seems to be a better overall woofer.
Yes, it is.
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Old 31st January 2018, 02:57 AM   #18
gabdx is offline gabdx  Canada
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Just one thing to think about before you go. 15 inches only if you need high sensitivity, like 95Db ,

Musical wise, 12, 10 inches sound better and get as low, however with 88-91 sensitivity.

15inches = 5 watt, rusty old console amps. Or PA for rock concerts.
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Old 31st January 2018, 04:48 AM   #19
LineSource is offline LineSource  United States
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For $500 you can purchase the drivers and medium-grade crossover parts for a 18x12x1 3-way. Modern controlled directivity horns benefit more from putting the tweeter horn at ear level than older diffraction lens or multi-segment horns. Cabinets which fit a 60"x60" sheet of baltic birch ply, or 48"x96" sheet of cabinet ply can keep you in budget, 2-sheets/cabinet. Taper the rear sealed volume in back of the midrange to reduce resonances with modest stuffing. Shallow 1" waveguides can provide close time alignment with a 12" midbass.

1" DFM-2535R-08 on PRV-WG35-25 = $55
12 Eminence Delta Pro 12A $130
18 Peavey LoRider18 $215
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Old 31st January 2018, 01:15 PM   #20
globalplayer is offline globalplayer  Germany
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Just one thing to think about before you go. 15 inches only if you need high sensitivity, like 95Db ,

Musical wise, 12, 10 inches sound better and get as low, however with 88-91 sensitivity.
I also prefer 12 inch (max.).
95db sens should be no problem for a good pa 12 inch.
Around 90db for a good (car)/home hifi 12 inch.

You can always add a few more for spl.
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