Turbosound iQ18B

18", 3,000W (Peak) Powered Subwoofer with Klark Teknik Digital Signal Processing and Ultranet Connectivity
Turbosound iQ18B image 1
Turbosound iQ18B image 1
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Turbosound iQ18B
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A Mighty Sub That's Mighty Portable!

If you're looking for an easy way to add thumpin' bass to your portable PA rig, then Turbosound's iQ18B powered subwoofer is right up your alley. This 3,000-watt, 18" subwoofer is a lot more then a bass-blasting machine. Loaded with cool features such as Klark Teknik digital signal processing and Ultranet digital audio connectivity, the iQ18B is high tech, but only in ways that actually make your job easier. What's more, lightweight Class D amplifier technology combined with conveniently back-mounted castors also serve to make the iQ18B one of the most portable subwoofers in its class.

Turbosound iQ18B Powered Subwoofer at a Glance:
  • Class D Klark Teknik power amplifier provides high output and low weight
  • Ultranet technology makes advanced integration with the rest of your gear easy
  • Flexible enough for live sound professionals, Durable enough for life on the road
Class D Klark Teknik power amplifier provides high output and low weight

A decade ago, if you've have told anyone here at Sweetwater that we'd someday carry a 3,000-watt, 18" powered subwoofer weighing only about 100 lbs., we probably would have laughed out loud. But here it is, the Turbosound iQ18B, and it's an amazing way to beef up your live sound rig. Add to that the fact that the iQ18B is about 2' in any dimension and that it's got integrated castors on back (so it still sits flat) and you've got yourself one truly portable workhorse sub.

Ultranet technology makes advanced integration with the rest of your gear easy

Now let's focus on the technological side of the Turbosound iQ18B. The iQ18B features Ultranet communications connectivity via standard Cat 5 ethernet cable, which allows you to send digital signal to and from your Ultranet equipped mixer for maximum sound quality. If you're already familiar with Ultranet, then you already know how powerful and easy to use it is. If not, call your Sweetwater Sales Engineer for a full explanation. On top of that, the iQ18B includes Klark Teknik digital signal processing, which provides total control over your sound, including extremely cool speaker emulation.

Flexible enough for live sound professionals, Durable enough for life on the road

Urtranet connectivity isn't the only thing that makes the Turbosound iQ18B an extremely flexible live sound tool. A full-featured LCD interface and USB connectivity for software-based configuration make that aspect of the iQ18B totally easy to use. On an even more practical side, you get things like an integrated 36mm (1.417") pole mount and Neutrik powerCON connectors to make configuring your iQ18B powered subwoofer with other gear a breeze. Top it off with a rugged powder coated grille and sealed birch plywood enclosure, and you can take your iQ18B on the road, worry free.

Turbosound iQ18B Powered Subwoofer Features:
  • A front-loaded powered subwoofer that's perfect for portable PA and installation applications
  • 3,000 watts (peak) of power features Klark Teknik Class D technology for maximum output with minimum weight
  • 18" low-frequency driver with 4" voice coil and double suspension delivers a ton of output
  • Birch plywood enclosure provides incredibly punchy and focused bass
  • Klark Teknik digital signal processing provides total system control
  • Speaker modeling includes accurate models of industry standard speakers
  • Ultranet digital audio networking connects to mixers and other sources
  • Program settings via USB or with the onboard LCD
  • Semi-matt black paint finish and rugged powder-coated steel grille easily withstand life on the road
  • 1.417" (36mm) pole mount supports satellite speakers and top boxes
  • Back-mounted castors make transportation easy but still provide you with a stable base
  • Two channel XLR combo inputs with XLR link outputs make audio connections easy
  • Chainable Neutrik powerCON connectors add security to your power
Get the thumpin' bass where you need it with the Turbosound iQ18B powered subwoofer!

Additional Media

PA Speaker Buying Guide
Turbosound iQ Subwoofers Overview

Tech Specs

Powered/Unpowered Powered
Power Configuration Single Amp
LF Driver Size 1 x 18"
Total Power 3000W
Inputs 2 x XLR Combo
Outputs 2 x XLR
Frequency Range 50Hz-100Hz (+/-3dB), 36Hz-100Hz (-10dB)
Maximum Peak SPL 127dB (Continuous), 133dB (Peak)
Enclosure Material Birch Plywood
Mounting Options Floor
Height 27"
Width 21"
Depth 22"
Weight 103.4 lbs.
Manufacturer Part Number iQ18B

Customer Reviews

Based on 18 reviews
Write your review


We recently purchased a pair of these subs with the guidance of Geoff Allen. I wasn't sure about them because I had never really heard of Turbosound enclosures. I was leaning more toward the Yamaha or JBL 18" subs but man and I'm glad I took Geoff's advice. These things thump hard. and forget about trying to slide these subs on the floor. The rubber feet on the bottom of the subs are like magnets that stick to everything. Jigsaw Jane loves these subs!

Plug and play, wall shaking ease!

My Sweetwater salesrep recommended this sub for our gymnasium and I couldn't be more pleased. We used it for our annual Christmas dessert theatre and it added tremendous fullness and dimension to the sound. Lots of compliments. Even with the single unit (should have two), the sound is awesome! No special set up required for connecting to our board. Just plug it in to an aux and go. That it's on rollers made stowing it after the event especially easy. Can't be more satisfied.

Excellent Value

Very impressed. Excellent sound quality. It even has a DSP emulation for my JBL tops. They are loud and provide that right amount of thump!
Music background: Gigging Musician



Great subs!

We ordered two of these for a church youth building. The room they are in is a basketball court size room. We are using them for both DJ and live bands. These replaced two dual 15" Peavey subs and I can honestly say these two subs completely blow away what we were using. The bass is clean, clear, deep, and can get LOUD! I have run them for hours at a time and never got any distortion. We are using the ultranet port to run them and it works perfectly. We could not be any happier!
See also: PA Subs, Turbosound, Turbosound PA Subwoofers