Summit HiFi Pretium 18" Series Sealed Subwoofer
Built to Shake. Tuned to Perfection.
When Bass Becomes an Experience.
Not just deep.
Absolutely devastating.
The Pretium 18" Series is Summit HiFi’s most powerful subwoofer ever—a true 18-inch monster engineered to dominate space, move massive air, and pressurize your room like a live performance.
This is King Kong power.
This is thunder in your room.
Driven by a massive long-stroke 18” driver and a rock-solid high-power amplifier, the Pretium 18 delivers overwhelming low-frequency impact without sacrificing precision. Explosions hit harder. Bass drops land deeper. Every note stays tight, clean, and precise.
And the best part?
All this performance comes at an unexpectedly attainable price.
This isn’t bass you politely hear.
This is bass you feel—in your chest, your floor, and your bones.
Turn it on—and the room gives in.
The Pretium 18 doesn’t ask for attention.
It takes it.
Shout-Out Moments 🚀
🔥 “Bass that breathes.”
🔥 “Built to shake. Tuned to perfection.”
🔥 “Precision meets pure power.”
🔥 “This is not a subwoofer. This is a statement.”
🔥 “Feel the room tremble, not just hear it.”
🔥 “Every drop hits like thunder.”
🔥 “Insane output, zero compromise.”
🔥 “Bass that commands attention.”
🔥 “From subtle rumble to full-blown chaos.”
🔥 “When bass becomes an experience.”
Unleash the Power
Driver & Amplifier
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High-magnetic, long-stroke 18” driver
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Stable high-power amplifier delivering:
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1200W RMS continuous power
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6000W peak output
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No strain. No compression. No audible distortion.
Just relentless, controlled bass—even at extreme levels.
💥 Built to move air
💥 Engineered to stay clean
Sub-20Hz Authority
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Room-shaking extension down to 16.2Hz Or Less (room-dependent, the Pretium 18 reaches frequencies you don’t just hear—you experience.
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Tight, physical, and controlled low bass with zero bloat or overhang
Smart DSP. Total Control
Summit HiFi’s advanced DSP platform offers professional-grade tuning flexibility.
Control Options:
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Bluetooth mobile app
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Integrated rear LCD touch panel
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Adjustable volume scale (absolute/relative)
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Backup & Restore Settings: Save and restore custom DSP configurations
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Firmware updates via app for future-proofed performance
Precision Tuning:
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Adjustable PEQ, crossover, and phase
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High-Pass & Low-Pass filters
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Selectable slope rates
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Variable phase adjustment & Polarity
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Delay Adjustment
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Adjustable voltage input for XLR and RCA
DSP Presets:
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Normal – Balanced and accurate
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Deep – Extended low-frequency authority
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Strong – Maximum punch and impact
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User – Fully customizable
🎯 Your room. Your system. Your sound.
Built for Serious Systems
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Balanced XLR input
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Unbalanced RCA inputs & output pass-through
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Universal voltage power supply (110–230V)
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Handles for Moving: Built-in ergonomic side handles for easy transport
From studio-grade environments to reference-level home theaters, the Pretium 18 fits right in.
Smart Power & Eco-Friendly
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Intelligent signal-sensing auto-standby system powers down when idle
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Adjustable sensitivity and shut-off timing ensure efficiency
Home Theater or Music? Yes.
🎬 For Home Theater
Explosions hit harder. Soundtracks feel real. With sub-20Hz extension, the Pretium 18 delivers cinema-level impact with true physical presence.
🎶 For Music Lovers
Fast, tight, and controlled. Despite its power, Pretium remains musical—preserving texture, detail, and emotional engagement across every genre.
Why Pretium?
Pretium is Latin for price, value, worth, and reward—a reminder that true performance isn’t measured by specs alone, but by what it delivers to the listener.
Most subwoofers excel at one.
Very few deliver both.
Specifications — Pretium 18 Series
Performance
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Driver: Single 18” long-stroke, high-magnetic
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Power Output: 1200W RMS / 6000W peak
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Impedance: 4 Ohms
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Frequency Response: 16.2Hz – 220Hz (±5dB)
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THD: <2% @ 100Hz
DSP & Control
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Summit HiFi Advanced DSP Platform
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Bluetooth app control with firmware updates
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Rear LCD touch panel
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Adjustable 7-band PEQ, HPF, LPF & phase
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DSP Presets: Normal / Deep / Strong / User
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Subwoofer input level control
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Adjustable volume scale relative to absolute levels
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Backup & Restore for custom settings
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Adjustable voltage input for XLR and RCA
Connectivity
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Balanced XLR input
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Unbalanced RCA input
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Unbalanced output for pass-through
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Adjustable auto-standby
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Universal power supply: 110–115V / 60Hz, 220–230V / 50Hz
Cabinet & Dimensions
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Cabinet (W × H × D): 22.05" × 22.52" × 26.77"
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Packaging (W × H × D): 26.77" × 28.27" × 33.35"
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Net Weight: 122 lb
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Gross Weight: 141 lb
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Finish: Satin matte black lacquer
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Handles for Moving: Ergonomic side handles
Elite Cabinet Construction & Finish
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Premium matte black lacquer for refined, uniform appearance
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Precision curved-edge geometry reduces diffraction
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Heavy-duty MDF construction with internal reinforcement & damping
Driver Specifications
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Frame: Cast aluminum
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Voice Coil Diameter: 115mm
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Cone: Waterproofed semi-pressed paper
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Surround: Rubber
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Top Plate Thickness: 12mm
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Pole Piece Thickness: 16mm
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Effective Diameter: 380mm
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X-Max: ±26mm
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Maximum Displacement volume/Vd(L/dm3): 11.34
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Magnet Size: 253 × 25 × 2 mm
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Driver Weight: 48.72 lb
Warranty: 5 Years
Customer Reviews
I dont even know where to start, lol. These subs are no joke. These are the first subs I buy and probably the last I'll ever get. I can't see myself ever wanting more then what these provide.
Absolutely next level! Clean and tight bass, and lows that will leave you in shock. Seriously.
Also the quality you're getting for the price is unbeatable! Insane value. I must warn you though, these things are massive, and HEAVY. At first glance I wasn't a huge fan of the handles on the sides, but after trying to move them, I'm very thankful they are there.
A huge shout out to Aamir. Amazing customer service and honestly just a stand up guy. Super friendly and helpful. I had to call him a few times to help with set up, and he was there with no hesitation. That was on a Saturday! I've never had customer service like that for anything.
I know they are sold out now, but if you are hesitating on picking these up once they have more, just DO IT. I promise, you will be very far from disappointed.
Wow….wow….wow….and Wow.
Honestly I wasn’t even planning to replace my 2 PB3000, but came across Barrett’s video about this sub, and when I saw the price at the end….shoot, my alarm system went off. In reality, I was a 20/80 music/movies, but a couple of years ago I started to listen more and more music, and got curious about sealed subs. That was the right opportunity to finally give it a try without selling an harm and a leg.
Big…big thank you to Aamir, that was so patient with me….I think I called him 20 times in 3 days. Always available and always ready to help me with whatever doubt I had about making the swap. I decided to go all in and got 2 Pretium 18”….and boy….am I happy? These subs are amazing, they dig deeper than the Pb3000, you feel the….presence….not sure how to put it in words. Another thing that I absolutely love, since I live in a semidetached, at night I listen to music a lower level…..the pb3000 just wasn’t there at that volume….the Pretium ,even when I’m at -40db….you can hear the bass perfectly….just amazing. Still playing around with settings, but so far I’m impressed. I’m not an audiophile by any means, but I can assure you that my overall experience in listening music and watching movies, just got to another level.
Highly recommend……
Ah sorry….don’t get fooled by Barret video ….this sub is big…and heavy…..
Always wanted a sub that was reasonably priced for good value and this unit hits the mark! The way it energizes my room is phenomenal! Shakes my couch, makes my pant legs move, and I’m sitting 7 feet away. Hearing the lost octave of music I’ve never heard before has me listening to my music all over again. Watching movies are a whole lot different now! Black Hawk Down had the helicopters seem right over head and pounding in my chest. Hearing one in my setup made me want two, and that smoothed things out nicely. The amount of adjustment within the app is great to have, and the sub is very responsive to the changes. There could be some improvements to the app like split screen for more than one sub but this is minor.
Thanks to Aamir for the customer service and assistance from start to finish!
For the longest time I thought that an larger quality subwoofer would forever be outside my price range. On occasion of my 50th birthday, replaced my trusty SB3000 with this beast and couldn't be happier!!
1. Plays music just as tight and quick as a smaller sub - which i didn't expect from an 18 incher.
2. Goes down to 10Hz in room, effortlessly
3. Integrated extremely well with my speakers. Got an extremely even in room response, and was able to tame the room mode - the inbuilt PEQ is effective.
4. My 20-20Kz response with 1/12 and psychoacoustic smoothing are included for reference. This is far better than what I could achieve with the SVS
5. My 10-200 Hz Subwoofer only response with no smoothing is also the best I've ever achieved.
6. Can feel the impact even at low volumes. I'm generally listening to music at -40 to -30 after calibrating at 75db. Even at those low volumes bass impact and presence is incredible.
Cons:
1. The handles although very necessary to move this behemoth, take away from the finish a little bit. Although only 1 side is visible in my set up, I wish they could be removed and left with a flat surface after.
I was the happy owner of a 15 in Paradigm Servo sub . I decided to upscale my setup by getting not one but two 18 in Pretium . Yes it is a little overkill. Those subs can make your room shake like crazy. For HT purpose, it is a huge step up. Gotta be careful cause you can make your neighbor become unfriendly with a reason. I cant compare to any SVS subs as i never had any. For music , it is a welcomed addition to my Polk Audio R700 speakers. Best of all is the app that controls the subs. Very useful as the sub frequency/levels are mixed very differently from one source to another. I will typically adjust the levels when i begin a listening/watching session. Some material has way too much making it undesirable..I just slide a control on my phone for a more comfortable level..a great product at a reasonable price
Dealing with Aamir was a pleasure