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everdark 
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Joined: 08 April 2007 Location: Russian Federat Status: Offline Points: 242 |
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 Posted: 29 September 2009 at 8:29am |
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that's it. I have a ground system that meet my needs perfectly. so if I even wanted to build something, only that works from 60 hz at least in order to have no subs at all in some applications
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music is the only language I really know
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MusicXtra
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Joined: 05 August 2009 Location: Netherlands Status: Offline Points: 249 |
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Posted: 02 October 2009 at 1:57am |
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If you want to build a line-array than you need up to 10 cabinets per side to let it work under 100 Hz. The length of the array must be as long as half the wavelength of the lowest frequenty, below this frequenty the low drivers wil work as separate drivers without the coupling so the throw will be the same as for front loaded conventionel cabinets for this frequenty's. For the range 60-150Hz some systems use extra sub cabinets in the array, for me this is not an option because of the height of the total array. Next project, after finishing my new subs I want to improve the lower frequenties of my line array, I think that I make a miscalculation with the port tuning. |
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MusicXtra
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Joined: 05 August 2009 Location: Netherlands Status: Offline Points: 249 |
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Posted: 06 October 2009 at 11:06pm |
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Here's a picture from the first cabinet in birch plywood.
The sound is amazing, from below 30 Hz it gives serious pressure. I start to build 4 subs and this is the first so far.  |
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DjMidKnight
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Joined: 31 August 2009 Location: Abq NM Status: Offline Points: 298 |
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Posted: 07 October 2009 at 1:09am |
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looks nice man, quite compact i dig it.
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wafflesomd
Young Croc 
Joined: 21 September 2007 Status: Offline Points: 811 |
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Posted: 07 October 2009 at 3:29am |
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Ok now it's an SB1000.
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Teunos
Old Croc 
Joined: 23 November 2008 Location: The Netherlands Status: Offline Points: 1799 |
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Posted: 07 October 2009 at 8:24am |
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SB1000 has front chamber not even reaching to the middle of the cab. Correct me if i'm wrong but this has a front chamber extending all the way to the back panel.
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Best regards,
Teun. |
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MusicXtra
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Joined: 05 August 2009 Location: Netherlands Status: Offline Points: 249 |
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Posted: 07 October 2009 at 10:45am |
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So in your opinion every trapezium basreflex is an SB850 and every self powered speaker is a Meyer UPA? |
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wafflesomd
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Joined: 21 September 2007 Status: Offline Points: 811 |
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Posted: 08 October 2009 at 2:02am |
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Uh, no. Every speaker that is a trapezium bassreflex that is basically a copy of the sb1000 is essentially an sb1000.  It's just a reflex.
Ok, they're both still reflexes. Nothing special. Edited by wafflesomd - 08 October 2009 at 2:03am |
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Carl P
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Joined: 08 October 2009 Status: Offline Points: 10 |
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Posted: 08 October 2009 at 2:43am |
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it looks like an air munchin alien robot................COOL
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MusicXtra
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Joined: 05 August 2009 Location: Netherlands Status: Offline Points: 249 |
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Posted: 08 October 2009 at 2:58pm |
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The lenght, depth, hight, shape, number of ports, diameter and length of the ports, speaker angle, type of speaker are a few things that are different from the SB1000. So in my opinion it is a total different design.  |
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darkmatter
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Joined: 26 February 2005 Location: LDN Status: Offline Points: 2425 |
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Posted: 08 October 2009 at 3:56pm |
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good work, bet it goes low and has decent distortion specs. waffles - i think musicxtra's probably a bit thrown by your comment cos he's clearly put a lot of work into tuning a design that's not that simple to simulate. if you dismissed every dual reflex design as just being the same as another there would be very few speaker designs about ;)
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Progrezz
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Joined: 06 September 2009 Location: Belgium Status: Offline Points: 17 |
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Posted: 08 October 2009 at 4:33pm |
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Why does everyone on this forum look down on bass reflex cabs? As far as sound goes, a BR is still the only way to go. Look at Meyer, L'Acoustics, EAW, ... Every sub in a live situation you'll see is a BR. Horns are only suitable for certain types of dance music and people only use it because of the high sensitivity and throw. But if you look at the Meyer 700-hp for instance, which in waffles oppinion is nothing more than a pain-ass reflex cab and hell it is, but those things sound mighty-fine, have a sensitivity of 110db, go awefully deep and throw pretty damn far. It's just one of the reasons why brands like Meyer and Eaw are still in business.
Btw; the SB1000z and especially the sb1002 is one hell of a subwoofer too. If MusicXtra's design is anything like that, which it looks like it is, it's going to sound even better when using 4 or more subwoofers next to each other and the sensitivity and throw should go up too. I've used them with the kf730 line array. Put all the subs in front of the stage, all next to each other in the middle. Works pretty well if you have a long room. Anyway, looks like a nice cab. I'd love to hear it play ;)
Edited by Progrezz - 08 October 2009 at 4:36pm |
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everdark wrote: