Erwin's 550 Liter LLT / 13 Hz / Maelstrm 18" - Page 4 - Home Theater Forum and Systems - HomeTheaterShack.com

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post #31 of 77 Old 01-26-11, 07:57 PM
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Re: Erwin's 550 Liter LLT / 13 Hz / Maelström 18"

Wow... very cool

Source: SB Duet, Pre/Pro: Integra DHC-9.9, Speakers: SGR MT3FSL (active), Sub Amp: Crown K2, Subs: 2x SGR Maelstrom-X (125L Sealed)
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post #32 of 77 Old 01-27-11, 02:31 AM
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Re: Erwin's 550 Liter LLT / 13 Hz / Maelström 18"

MaelX drivers behind screen? I wouldn't put screen right in front of driver nor port.
Isn't here a risk the screen will move if playing really low and loud?
Even a AT-screen wouldn't let that amount of air pass forth and back...
I'd place screen between drivers and ports...

If I get the time I think I will copy your specs and build som similar bass
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post #33 of 77 Old 01-27-11, 02:44 AM Thread Starter
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Re: Erwin's 550 Liter LLT / 13 Hz / Maelström 18"

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mikeett wrote: View Post
MaelX drivers behind screen? I wouldn't put screen right in front of driver nor port.
Isn't here a risk the screen will move if playing really low and loud?
Even a AT-screen wouldn't let that amount of air pass forth and back...
I'd place screen between drivers and ports...

If I get the time I think I will copy your specs and build som similar bass
I did look into this and found recommendations to leave about 20 cm (8") of space, which I did. Hoping for the best...

Slowly building a 9.2.4 HT with 3 DIYSG Titan LX LCR, 2 LLT subs (done) and much, much more...
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post #34 of 77 Old 01-27-11, 03:06 AM
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Re: Erwin's 550 Liter LLT / 13 Hz / Maelström 18"

WOW!!! The build looks amazing so far, as well as the home for them. I can't imagine how rewarding all of that will be once it all comes together, and you are sitting and enjoying a movie! Great work, and thank you for bringing this build for all of us to see!
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post #35 of 77 Old 01-27-11, 03:15 AM Thread Starter
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Re: Erwin's 550 Liter LLT / 13 Hz / Maelström 18"

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WOW!!! The build looks amazing so far, as well as the home for them. I can't imagine how rewarding all of that will be once it all comes together, and you are sitting and enjoying a movie! Great work, and thank you for bringing this build for all of us to see!
You're welcome. And take my word, I have indeed been dreaming about being in the house when it's done. I think I"ll never ever leave the house. Just sit there in and round the house, order food, movies and music on the internet. Maybe start a B&B to meet people without having to get out the house myself...

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post #36 of 77 Old 01-27-11, 05:15 AM
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Re: Erwin's 550 Liter LLT / 13 Hz / Maelström 18"

Sounds like a great plan! Aside from gettin out to get some sun, it looks like you will have everything you need right there at your finger tips. On top of the B&B, you could also occasionally play a movie and charge admission for anyone wanting to experience what a hand built home theater can really do!
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post #37 of 77 Old 01-27-11, 06:32 AM
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Re: Erwin's 550 Liter LLT / 13 Hz / Maelström 18"

Erwin, are those two 12" woofers in the custom centre speaker? Oh my.

- OJ -

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post #38 of 77 Old 01-27-11, 06:49 AM Thread Starter
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Re: Erwin's 550 Liter LLT / 13 Hz / Maelström 18"

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Erwin, are those two 12" woofers in the custom centre speaker? Oh my.
Yes, they are! It's still under discussion, but I want to use the same drivers in there as the L&R, which are the DTQWT-12 designs from Troels Gravesen. They're quite affordable woofers, about €100 each. I would like a very convinsing soundstage and I was told the 80-200 Hz region will benefit from these. The other, horizontale center is also possible.

Here's the link to see the towers an Italian person built. Unlike him, I will not be going the CNC route though. Note that the tweeter and midwoofer are on the front baffle, the two 12" woofers are on the back. They all load a central horn. This presents a challenge to invent a center that works with them. I know nothing about crossovers, so I need to use a proven design or make some expert crazy enough to do it for me...

http://www.troelsgravesen.dk/DTQWT-12_Ferraioli.htm

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post #39 of 77 Old 01-30-11, 11:52 AM Thread Starter
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Re: Erwin's 550 Liter LLT / 13 Hz / Maelström 18"

Ronse2010B_HTAanzichtKeuken.pdf

Ronse2010B_HTplan8.pdf


I did some acoustic research and made the adjustments to the plan.
More symmetrical, double walls, broadband absorbers and a very cool bottle rack AKA a sound dispersing device...

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post #40 of 77 Old 01-31-11, 08:23 AM
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Re: Erwin's 550 Liter LLT / 13 Hz / Maelström 18"

Erwin, are you doing these plans yourself, or do you have a professional doing them for you? I'm just curious because they are very impressive and I would hope to be able to use something similar when the time comes for my basement.

That's a nice set of speakers the Italian built... very nice finish, and I love the CNC use in construction.

- OJ -

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