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Multi-Way Conventional loudspeakers with crossovers

Suggest a speaker build or kit for a newb...
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Old 3rd December 2017, 09:41 AM   #21
ODougbo is offline ODougbo  United States
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Paul,
I'm sure you would like the ZRT 2.5. but tell us about the new location?


Quote:
Originally Posted by paulys55 View Post

Budget: up to $2000 but would like to be around $1500 for drivers and crossovers
Room: current room is not ideal (suspended floor, carpeted, 18ft deep, 11ft ceilings and open on one side to the dining room) but will be moving soon so room is a non factor
Current equipment: NAD 375BEE integrated (150W x 2), MiniDSP 2x4HD, and a DIY Stereo Integrity HST18 MKii in a 4 cubic foot sealed powered by a Crown K2
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Old 3rd December 2017, 12:31 PM   #22
jrh0516 is offline jrh0516  United States
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Whatever happen to the Lightning kit from Jeff?
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Old 3rd December 2017, 12:57 PM   #23
Keruskerfuerst is offline Keruskerfuerst  Germany
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If you have no experience with building a loudspeaker, then a kit would be better.
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Old 5th December 2017, 09:41 PM   #24
LineSource is offline LineSource  United States
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KIT: The Kairos plus a 10" SB29NRX45-8 ported woofer is one of your best options.
Google: The Kairos and Continuum Three-Way

======the UN-KIT route==== The woodshop capability often sets the design direction.

Geddes: “The mains should be designed for the best possible direct field with as flat a power response as possible. Equalization of the mains could only make them worse.”

Since your audio end-goal includes powerful Stereo Integrity HST18 subwooferS, consider a full range 3-way with either two 8" woofers, or one 12" woofer per cabinet. "We live in the midrange" (P. Klipsch) and the cost($148) of a 6" Satori MR16P-4 midrange can be balanced with standard ($52) SB Acoustics SB29RDC-4 dome tweeter and either two ($92) 8" SB23NRX45-8 woofers or one 12" SB34NRX75L-6 ($230). The higher efficiency of the 6" short-coil MR16P-4 will deliver excellent details and dynamics, but this creates a challenge in finding an efficient musical woofer.

The Avalon Eidolon bevels with the 12" SB34NRX75L-6, and Audio Physic rounds with two 8" SB23NRX45-8 dramatically reduce edge diffraction.

The award winning Sony SS-AR1 using two 8" woofers on a 12.5" wide modest beveled baffle is also a good design to klone.

==== Sd vs. cone diameter===
18" 1220 cm2
15" 855 cm2
12" 530 cm2
10" 345 cm2
8" 225 cm2
Attached Images
File Type: jpg 8 vs 12 woofs.jpg (137.2 KB, 175 views)
File Type: jpg Sony SS AR1 Klone.jpg (151.7 KB, 166 views)
File Type: jpg EidolonKlone.JPG (238.3 KB, 164 views)
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Old 5th December 2017, 10:18 PM   #25
wolf_teeth is offline wolf_teeth  United States
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I agree with isaeagle and DiscoJones. Spirit Winds are incredible. I would pair that with Jeff's 'woofer module' cabinet, and call it a day.

The Skaaning/Audio Technology woofers are really second to very few drivers on the market, and have a LOT of Xlim and a large voice coil that virtually eliminates the power compression issues smaller VCs would likely entail.

As for the Lightning, I thought it was to be a kit as well, but the Spirit Winds are better.

For another option, my Nephila kit is also available through Meniscus. It turned a lot of higher dollar projects on their ear at MWAF 2015.

Later,
Wolf
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Old 6th December 2017, 04:37 AM   #26
paulys55 is offline paulys55  United States
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Quote:
Originally Posted by ODougbo View Post
Paul,
I'm sure you would like the ZRT 2.5. but tell us about the new location?
I guess "soon" is kind of relative. Probably in the next year, haven't found a place yet. Just don't want to make the room a big factor because it will change and I will treat the new room when I get there so as long as it's not a tiny bookshelf speaker or coffin size I think I will be fine.
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Old 6th December 2017, 04:39 AM   #27
paulys55 is offline paulys55  United States
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Having the bottom octave taken care of with the sub(s), I'm really looking for a speaker that can really play comfortably down to about 60-80hz.
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Old 6th December 2017, 05:45 AM   #28
Octavia is offline Octavia  United States
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some good suggestions so far but i would also recommend you consider the LX Mini, especially since you already have the miniDSP,
LXmini Linkwitz Lab Speaker Kit, PAIR
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Old 7th December 2017, 12:03 AM   #29
LineSource is offline LineSource  United States
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My last post included thinking about your audio end-game in your new home....
There are good models on optimizing the placement of multiple woofers for home audiophile and home theater. In our home, about 80% of the time we just use the "adequate" bass from the front stereo pair, so adding a pair of Stereo woofers at the back wall of the room was our best solution -- our sofa is several feet from the rear wall. On the slides FBQ = Front Back Quarter-Inward. Hence, my suggestion for -F3~30-35Hz front stereo woofers. A ported box with 8" or 12" woofers can reach 30-35Hz. You could use a 2x4 MiniDSP unit plus second amplifier to bi-amp the front speakers TM+W, and with W-boost this will produce deep bass in modest volume sealed woofer cabinets. Just place a Stereo pair of Integrity HST18 subwooferS against the rear wall for FBQ.

Low-Frequency Optimization Using Multiple Subwoofers
TODD WELTI AND ALLAN DEVANTIER
COLOR== INNOVATION | Harman

Have you compared maintaining stereo woofers in your room, like a front/back quartal configuration, versus summed mono woofers?

1) Stereo bass down to 20Hz has been produced in low distortion, high SPL since 1982 on CDs, DVD-As, SACDs, and 5.1 movies.
2) Most people with normal hearing can identify the difference between stereo vs. mono bass. Stereo bass has phase for location.
3) At frequencies below 80Hz most people with normal hearing cannot isolate the physical location of the woofer.
-----Expert listeners can isolate location of woofers down to 60Hz by focusing on impact harmonics, port noise, upper harmonic distortion.
4) Not being able to locate the subwoofer is a good cost simplification, but summing low bass into mono degrades true stereo recordings.
5) With stereo subwoofers, any out-of-phase bass information in a true stereo (acoustic) recording is reproduced properly at full level, adding immensely to the perceived width and depth of the room in which the recording was made.
Attached Images
File Type: jpg FBQ front back quarters.JPG (182.0 KB, 121 views)
File Type: jpg Stereo Bass.jpg (292.9 KB, 123 views)
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Old 8th December 2017, 07:02 AM   #30
LineSource is offline LineSource  United States
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Very nice presention of 2-box Kairos plus SB29NRX75-6 woofer build.
mpbarneyspeakers
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