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Multi-Way Conventional loudspeakers with crossovers

Ekta Grande project/AR-1 variation
Ekta Grande project/AR-1 variation
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Old 23rd September 2018, 10:23 PM   #51
LineSource is offline LineSource  United States
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Join Date: Sep 2003
Location: SiliconValley
Quote:
Originally Posted by Coasttocoast View Post
I really want to build Troels “The Loudspeaker” which is based on a JBL 4345. But reality is they need a dedicated room because of their size.
Using DSP and multiple efficient amplifiers can reduce the size of "big sound" speaker cabinets. A 5cuft cabinet(H46" xW18"x D17") with a modest 18" width will fit most rooms. Troels uses an $800 woofer. Great "big sound" 3-ways can be built with $500-$600 total driver cost/speaker. To simplify the cabinet finishing, an edge-machined flat black baffle with oiled plywood sides produces a classic look.

Consider a fun build without perfectionist efforts.
=====
The BMF1 speaker custom-built by Tweek Geeks has received high praise in public shows. The use of two-sealed, near-floor, side-side, counter-force, DSP-controlled room-equalized woofers provides a BIG-BANG in a medium size cabinet. The Tweek Geeks website has several construction pictures,

HIGH-watts to two 24Hz equalized 12" woofers allows a modest total 5cuft cabinet that fits many homes.

$13 B-52 PHRN-1014 1" Horn 10" x 14" Bolt-On waveguide
Model: PHRN-1014|Part # 299-2303 Parts Express
$63 Peerless 1.75" DFM-2544R00-08 compression driver
$188 Eminence KappaLite 3012HO Midrange:
TWO $146 Dayton RSS315HF-4 12" woofer (two in series = 6.2 ohms)
==========
$560 for drivers
Attached Images
File Type: jpg DSP shrinks .jpg (183.7 KB, 137 views)
File Type: jpg $575 parts.jpg (172.5 KB, 138 views)
File Type: jpg $500 parts 3ways.jpg (167.6 KB, 135 views)

Last edited by LineSource; 23rd September 2018 at 10:28 PM.
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Old 25th September 2018, 05:24 AM   #52
Coasttocoast is offline Coasttocoast  United States
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Join Date: Jul 2012
Location: Honolulu
Quote:
Originally Posted by LineSource View Post
Using DSP and multiple efficient amplifiers can reduce the size of "big sound" speaker cabinets. A 5cuft cabinet(H46" xW18"x D17") with a modest 18" width will fit most rooms. Troels uses an $800 woofer. Great "big sound" 3-ways can be built with $500-$600 total driver cost/speaker. To simplify the cabinet finishing, an edge-machined flat black baffle with oiled plywood sides produces a classic look.

Consider a fun build without perfectionist efforts.
=====
The BMF1 speaker custom-built by Tweek Geeks has received high praise in public shows. The use of two-sealed, near-floor, side-side, counter-force, DSP-controlled room-equalized woofers provides a BIG-BANG in a medium size cabinet. The Tweek Geeks website has several construction pictures,

HIGH-watts to two 24Hz equalized 12" woofers allows a modest total 5cuft cabinet that fits many homes.

$13 B-52 PHRN-1014 1" Horn 10" x 14" Bolt-On waveguide
Model: PHRN-1014|Part # 299-2303 Parts Express
$63 Peerless 1.75" DFM-2544R00-08 compression driver
$188 Eminence KappaLite 3012HO Midrange:
TWO $146 Dayton RSS315HF-4 12" woofer (two in series = 6.2 ohms)
==========
$560 for drivers
Thanks for your comments and taking the time to post.

I never really thought about multiple amps. Reading about Daniel Hertz 4 channel amp and the M1 speakers gives me something to think about.

Where can I find out more about the Basic Maximus 18?

Thanks
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Babelfish J as Aleph 2, McIntosh C2300, RAKK DAC Mark IV Extreme, Oppo UDP-203 DVD/CD, Custom SP10 MKII/SME 312s/Koetsu Urushi Black, Magna Mano streamer, Ekta Grande speakers, DIY 13" ScanSpeak sub's w/REL amp boards, Transparent Super cables.
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Old 26th September 2018, 06:01 AM   #53
LineSource is offline LineSource  United States
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Join Date: Sep 2003
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Quote:
Originally Posted by Coasttocoast View Post
Where can I find out more about the Basic Maximus 18?Thanks
Short-story: TODAY to build a Maximus-18 you would email diysoundgroup.com and discuss purchase of their HTM-12 two way Econowave with passive crossover, and also ask for the CNC file to cut the Maximus-18 cabinet panels. You would add an 18" woofer of your choice and add+tune Bi-Amping.
=====
The Maximus-18 speaker kit was developed at diysoundgroup.com by adding a passive-crossover 1,500Watt subwoofer under the well tested HTM-12 2-way EconoWave into one modest size cabinet. The Forum thread states subwoofer power demands were so high that expensive woofer inductors sometimes over heated and failed. Customers also wanted more woofer room equalization control than a passive crossover. Recommending a separate HTM-12 kit and a separate subwoofer kit has now evolved into the normal alternative to the Maximus-18. An example Xover is attached for the Eminence Delta Pro 12A midwoofer and high value Peavey LoRider18 woofer.

diysoundgroup also designed the $900 65" tall WMTMW "model 1899" kit which uses two modest power 18" woofers in a larger volume. Scary-big home theater speakers.
Attached Images
File Type: jpg Maximus18.jpg (177.6 KB, 54 views)
File Type: jpg Econo12 Woof18.JPG (252.1 KB, 55 views)
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