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18sound 18” Dual Subwoofer build |
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ole123451 
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Joined: 09 August 2019 Location: Denmark Status: Offline Points: 2 |
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 Posted: 09 August 2019 at 10:31pm |
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What kind of speaker did you use for this subwooferbox? Did you just go with the Eighteensound 18LW3000 as they suggested?
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wilidapili
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Joined: 13 August 2018 Location: Finland Status: Offline Points: 56 |
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Posted: 15 August 2019 at 9:34pm |
Yes, we used the 18TLW3000. We have made two of these subwoofers, and they sound really, really nice. However, I am starting to build a prototype for a new subwoofer design called the "Skram" by Josh Ricci, just to get a little bit more lower extension. If you are interested, I am thinking about selling both of our double 18's. I could bring them to Denmark as I will be driving there during the fall/winter months. They have barely been "driven in", and have been used for only 4 gigs, all with a Powersoft amp and with all limiters in use, so they haven't been abused in any way. DM me if you are interested.
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MarjanM
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Joined: 10 February 2005 Location: Macedonia Status: Offline Points: 7844 |
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Posted: 15 August 2019 at 10:02pm |
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Skram is a 30Hz box, so i fail to see how it will go lower then the 18sound 2x18 box. And it wont be louder for sure.
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Marjan Milosevic
MM-Acoustics www.mm-acoustics.com https://www.facebook.com/pages/MM-Acoustics/608901282527713 |
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wilidapili
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Joined: 13 August 2018 Location: Finland Status: Offline Points: 56 |
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Posted: 15 August 2019 at 10:11pm |
The tuning can be dropped by blocking a vent. Also, we'll see the comparison regarding loudness
 Atleast two will be louder than one 218 box, which will be about the same driver and amp cost. Also it might have nicer dimensions. I don't know what I want yet |
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ole123451
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Joined: 09 August 2019 Location: Denmark Status: Offline Points: 2 |
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Posted: 16 August 2019 at 12:00am |
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Im not sure how I send you a private message, so here you have my email:
danielpedersen650@gmail.com |
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wilidapili
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Joined: 13 August 2018 Location: Finland Status: Offline Points: 56 |
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Posted: 16 August 2019 at 12:03am |
Oh yeah you cannot send private messages before having 10 or so messages on the forum. I sent you an e-mail.
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DanielIt
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Joined: 11 September 2013 Location: Italy. Status: Offline Points: 273 |
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Posted: 20 March 2020 at 9:32am |
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Hey Willi...can you share your fusion file for this build? Would love to take a look at that bracing.PM me please .
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Measure twice...cut once.
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itskabini
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Joined: 03 April 2019 Location: London Status: Offline Points: 49 |
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Posted: 06 July 2021 at 10:05am |
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I'd like a copy of that file too if possible. Hoping to get a few of these built soon, although might try and modify it into a single 18 design.
Edited by itskabini - 06 July 2021 at 10:06am |
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MarjanM
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Joined: 10 February 2005 Location: Macedonia Status: Offline Points: 7844 |
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Posted: 06 July 2021 at 11:14pm |
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Its at the 18sound web site.
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Marjan Milosevic
MM-Acoustics www.mm-acoustics.com https://www.facebook.com/pages/MM-Acoustics/608901282527713 |
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itskabini
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Joined: 03 April 2019 Location: London Status: Offline Points: 49 |
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Posted: 06 July 2021 at 11:18pm |
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I was after the fusion file with all the bracing improvements, hoping to be able to give the cabinet builder a bit more detail than just the 18Sound plans.
Also would making it into a single 18 be as simple as cutting this box in half, to effectively get two triangular vents similar to he B&C sub18
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lurkz
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Joined: 10 March 2024 Status: Offline Points: 1 |
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Posted: 30 June 2025 at 11:28am |
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Also after the fusion file here. I tried to build it myself at my local makerspace with tablesaw and router, but I am no master woodworker. I've completed the build with three crosses of bracing. But all the little imperfections add up, it doesn't look great and I can't play it as loud as I'd like. I just want to pay a CNC shop to give me the pieces all perfect-like and assemble fresh cabs. Anyone got a copy they could share?
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Sypa
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Joined: 21 February 2013 Location: Croatia Status: Offline Points: 953 |
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Posted: 30 June 2025 at 4:43pm |
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Don't have any fusion files or for CNC but this is a pretty easy build if you ask me and I ain't no master woodworker either . Would recommend CNC rebate tho for the starting stiffness .
Built these last year a bit modified length depth for fitting on top of two 636 mm cabs . 18sound 18lw2420 loaded. Love the sound quality not the loudest or punchiest just a nice reflex box . Not sure how much these freestyle braces helped, the baffle is also 30mm. Will build a few more in the future with more extensive bracing .
Edited by Sypa - 30 June 2025 at 5:02pm |
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ole123451 wrote: