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FBT X SUB 18SA -18" Subwoofer

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FBT X SUB 18SA -18" Subwoofer

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Product Description

The rugged X-SUB 18SA by FBT is a road-ready 18-inch subwoofer with superior sound quality and an elegant exterior to suit any space. Find the perfect frequency from the low to the mid-high using the X-SUB 18SA’s 1200W Class D power amplifier with 4 DSP presets Read More

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Jul 28, 2019

If you missed out on these because you procrastinated or your a skeptic. Slap yourself now!! This was the ultimate deal!!

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ralphgonz

Jul 22, 2019

As some of you DIYers are aware, there is a tradeoff between bass extension, efficiency, and size... Contrary to popular belief, a large (18") driver will give *less* bass extension than a smaller driver given a fixed cabinet size and all other things being equal. This occurs because the acoustic suspension of the air in the cabinet will raise the resonant frequency of the large driver more than it does the small driver. On the other hand, the large 18" driver will enable higher SPLs and be more efficient than a smaller driver all things being equal. Since this "subwoofer" is for PA applications, I guess high SPL and high efficiency is more important than reproducing the bottom octave.

confused-guy

Jul 22, 2019

It only goes down to 38 hz? With an 18 in sub??? That sounds like a speaker. :'D

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Senny

220

Jul 25, 2019

I doubt your monitors do anything at 136dB SPL peak, let alone at 35Hz.

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Tvill

Jul 25, 2019

SennyThey're three ways, so yes they do maintain 35. However not a 136db SPL peak (obviously), as they're just $1k ea nearfields...so they were not designed to. Doesn't make it any less sad that this sub only goes down to 38hz.

(Edited)

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Billy-Bobby

Jul 22, 2019

This is the worst Italian styling I have ever seen...I think I’ll order one to be sure.

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Jaysun

1855

Jul 22, 2019

APPLICATIONS ELECTRONIC SPECIFICATIONS PHYSICAL SPECIFICATIONS Permanent installations in: Theatres, Concert halls, Clubs, Places of Worship, Conference rooms, Indoor sports, Arenas and Stadiums. Sound reinforcement for live events: Touring, Bands, Orchestras.

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Calaverasgrande

1486

Jul 22, 2019

Kinda strange to see Sound Reinforcement powered speakers on Drop but okay. Would love to see some clarification on the halfspace SPL. Usually these specs will also specify a frequency or frequency band at which such SPL is achieved. It would also be nice to see some qualification on the wattage. Is that RMS or peak watts. I'm sorry that I have to ask, but a lot of lesser brands cheat by providing 'peak' watts to exaggerate the capabilities of their product. (I'll never buy a Mackie powered speaker again!). One more thing, it would be great if you guys offered tops along with subs. Most folks getting powered PA want a pair of tops and one or two subs. Subs by themselves with unmatched tops are usually going to be less than optimal.

strandtentje

Jul 22, 2019

I'm willing to be the +4 but need to know what sort of shipping rates to EU I may be looking at. Does anyone know where I can find this? Also is this is a 120v-only product?

(Edited)

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NiteNinja

140

Jul 22, 2019

18 inch and only 38hz low end frequency response. I'd expect more low range than that. But this is designed more for an outdoor concert than an indoor club or theatre so I guess.

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Brian.Steele

Jul 22, 2019

NiteNinjaThe website for this subwoofer says that it's 38 Hz to 120 Hz, -6dB, which implies that it's -6dB down at 38 Hz. That's not too bad for a "small" subwoofer designed for pro audio use. Unfortunately the published frequency response curve for this same subwoofer suggests that claiming that the -6dB point is 38 Hz is a bit optimistic. A Google search for "FBT X SUB 18SA" should turn up the site in question. BTW, this is a bandpass sub (6th order most likely), not a folded bass horn. More info about these types of subs at my website, www.diysubwoofers.org.

(Edited)

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welinder

Jul 23, 2019

Brian.Steelethank you for the clarification. there's some good content on your site. it's been years since i seriously played with any big subs, but i tried to get a pair of danley designed servodrive contrabass units to work in my house. these go down to 14Hz and below... i gave up after the sheet rock screws started popping out. today i'm quite content with a single 10".

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