B&C 18SW115 enclosure design |
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MarjanM
Old Croc Joined: 10 February 2005 Location: Macedonia Status: Offline Points: 7810 |
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Single 18 BR wont stand a chance against a TH, no mater the size.
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Marjan Milosevic
MM-Acoustics www.mm-acoustics.com https://www.facebook.com/pages/MM-Acoustics/608901282527713 |
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Crashpc
Registered User Joined: 26 February 2008 Location: Czech Republic Status: Offline Points: 463 |
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Bhaha I'd like to see how that one (really small) folds for more SPL, efficiency, usable bandwith, especially for lows, all at once, for basdreflex to loose. Damn, if all that was true, I would not use BR boxes for quite some time. Didn't happen for obvious reasons. For restricted volumes, the physics works as always did, so no magic happens with THs.
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Nikon and Canon people should not be married to each other. Why did you let this happen?
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RMS65
New Member Joined: 19 April 2017 Location: SLO Status: Offline Points: 8 |
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Hallo! I am new to the forum. I would like to made bass reflex for a group starring my son. We have a sound system that is becoming too small. Even given the time to watch the B & C 18SW115 8Ohm. The game is played folk music and fun. I need to carry out live music. By just making will not be a problem. The problem I see in the design. Therefore, I appeal to you if there is any possibility to help me in the calculation of the box. Thank you. Jani
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MarjanM
Old Croc Joined: 10 February 2005 Location: Macedonia Status: Offline Points: 7810 |
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Single driver TH is twice the size of a single driver reflex. So no magic.
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Marjan Milosevic
MM-Acoustics www.mm-acoustics.com https://www.facebook.com/pages/MM-Acoustics/608901282527713 |
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cookie-dj
Young Croc Joined: 09 May 2014 Location: Warwickshire Status: Offline Points: 977 |
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My Tham 12 which is the size of a shoebox totally outclasses a 12" BR, in fact, it outplays some 15-18" from 50hz and above!
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You can't polish a turd!
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Crashpc
Registered User Joined: 26 February 2008 Location: Czech Republic Status: Offline Points: 463 |
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Of course. I compared Cubo12 extended with some 15"s and 18"s, and it also could keep up with bigger guys above 50Hz.
You have SPL, size and range, and you always can pick only two in your favor. That way comparing yours with box that can do 35Hz well, is not fair comparison. It simply cannot do what the bigger box can. Therefore it is not generally better box. It is better box for your taste and purpose. And that's good. Nothing wrong about that. It doesn't suit me though, as the performance under 50Hz, and especially under 40Hz, is pathetic. Otherwise I would build THs every time. I will anyways, but for different purpose... |
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Nikon and Canon people should not be married to each other. Why did you let this happen?
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toastyghost
The 10,000 Points Club Joined: 09 January 2007 Location: Manchester Status: Offline Points: 10920 |
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Cubo12 isn't a tapped horn…
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Crashpc
Registered User Joined: 26 February 2008 Location: Czech Republic Status: Offline Points: 463 |
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toastyghost: Yes, I´m aware. I was making a point towards size/SPL/range ratio, and TH isn´t going to break that either. I did Cubo 12 classic, and "superextended", and the second make might work in very hybrid, close to tapped horn mode. It didn´t go low though.
RMS65: I did quite compact bassreflex box with 18SW115, and it works very well. http://www.picfront.org/d/9uHA It is 54*58*75cm large box made of baltic birch (15mm thick), bassreflex ports are triangular at each corner /16cm long on shorter sides of the triangle, 13cm space is left inside box towards the back wall for air to go in and out. It is tuned at 34,5Hz that way. Could be made 3-5cm shorter for more prominent bass notes. and possibly 2-3Hz higher tuning. |
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Nikon and Canon people should not be married to each other. Why did you let this happen?
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toastyghost
The 10,000 Points Club Joined: 09 January 2007 Location: Manchester Status: Offline Points: 10920 |
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Sure thing, but put two of them together and you have more physical space taken up than a single 18" tapped horn - not by much, but still more space, and double the amp power needed to boot.
As ever, you pick your compromises. |
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RMS65
New Member Joined: 19 April 2017 Location: SLO Status: Offline Points: 8 |
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Hallo! Thanks for the information. It is possible to get a plan. Do you have a video of how to play Bassi? bojana.jani@gmail.com Thanks Jani |
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toastyghost
The 10,000 Points Club Joined: 09 January 2007 Location: Manchester Status: Offline Points: 10920 |
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Literally all the information you need if you just want to rip off the design is in his post already.... |
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RMS65
New Member Joined: 19 April 2017 Location: SLO Status: Offline Points: 8 |
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Sorry! Sem naredil kaj narobe?
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