REL HT/1510 Predator II
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Overview
HT/1510 resets expectations for REL’s standard bearer, with a confident, sexy new look that meshes perfectly into the traditional REL family, while delivering significantly increased power and upgraded performance across every category.
The High Notes
One Massive Subwoofer
Massive Power Amp Section
High Tech Glass and Carbon Fiber Woofer
Company & Subwoofer Overview
The latest REL offering, the 15-inch HT/1510 Predator II subwoofer, might just be their best value yet. This is a completely revamped version of their already successful original 15” subwoofer in their HT series. In this day and age of ever-increasing prices, the great news about this model is, while it has been completely redone with more expensive materials, it will sell exactly the same price as the old model.
REL has always been unique because they focus on just one single type of product - subwoofers. Their team is extremely passionate about pushing the boundaries of engineering to the limits to improve the performance of their subwoofers. They have gained a very devout following of REL fans over the years as their subwoofers do more than just add deep bass to your system. A properly set up REL subwoofer can improve the entire listening experience.
Learn more about how to properly set up & calibrate a subwoofer >
REL has taken the role of a subwoofer in a great music or theater system to the extreme with their 6-pack concept where they have designed a system that allows you to stack up 3 subs per channel in a really cool vertical configuration. That whole idea is kinda neat as some of the very best-sounding subwoofers we have ever heard over the last several decades all used multiple stacked drivers.
Design & Build Quality
When REL was starting the design of their update on the 15” Predator subwoofer, they heard from many customers that they wanted something that looked as good as the other subwoofers in the upper REL series. The original Predator was pretty basic looking, but they really stepped things up with the new version. One reason for this is many REL owners had paired up one or two of the Tx, S, or Reference models with their main speakers and were adding a 15” Predator for the LFE channel. Their request was to make the Predator look cosmetically similar to the rest of the line.
The new Predator II now comes with a sleek new look with proportions that better match the other REL models. This big guy now looks very nice to the eye with better finishes.
To us, all REL subs seem to be built really well. Fit and finish is great, you will always find nice connectors, and really smooth feeling solid adjustment knobs on all REL subs. The new Predator is no exception and even has balanced audio inputs along with RCA.
Another cool design feature is the ability to stack up 3 of them for incredible bass performance. The subs come with REL Couplers™ that connect lower units to upper units. The couplers are made out of solid milled aluminum and pair up with rails that are on the underside of each sub so you can create your own true bass tower of power. Those of you who have been lucky enough to experience a stack of RELs know how prodigious and effortless the bass is in this kind of configuration.
Subwoofer Features & Technology
The REL HT/1510 Predator II subwoofer is designed for home theater and music systems although we think it will mainly be used in performance home theater systems. Like most subwoofers, there are two sets of RCA inputs and a pair of outputs.
Unlike most subs in the price class, you also get a balanced audio input and out. You can set the sub to come on when it sees a signal with a switch on the rear panel, which is what we suggest.
Like we see in most subs, there is a level and crossover control. However, as we said earlier, these potentiometers feel really smooth and solid, somewhat like a high end preamp.
Right above the two controls are a phase switch you can set to 0 or 180.
We have to compliment REL on the way they label things. Just like our friends at Cambridge Audio, the connections and controls are screen printed both right side up and upside down so when you are leaning over your sub, you can see them in the upside-down position.
The new Predator 15-inch subwoofer model has been redesigned with all kinds of new tech for better performance. While the cabinet was redone to be much more elegant and match up with the other series better, there are some internal changes REL made to squeeze out better bass performance. They have always had what they call BrilliantBrace™ tech which cradles the rear of the woofer that takes energy that would normally be trapped in the driver and reduces cabinet noise. The new design lets the driver's back wave use the entire depth of the cabinet for more output and better control of the driver itself by working with the pressure wave. This idea took some serious engineering and testing to finalize. The feet of the cabinet itself are now very solid stacking rails which adds to making the cabinet more inert.
REL is all about speed and while it may not seem like much, they improved the input filters to make things even faster. Better speed equates to passages with bass slam hitting you even harder and quicker.
The original 15-inch Predator subwoofer already had a great driver, but REL made some improvements to allow for even more power handling. The woofer is a combination of glass fiber and a center cap made from carbon fiber. The glass fiber material is very lightweight and allows the large 3” voice coil to instantly move the driver for great attack. To hold everything in place and keep things rigid, a carbon fiber center cap is used rather than continuing the center cap with the same material like many sub drivers have. This very stiff center cap keeps the shape of the cone perfectly intact even when a tremendous amount of bass hits it. We love this design's goal of having incredible speed, as it not only benefits movie soundtracks, but means the 15” driver can keep up with fast tower speakers for music enjoyment as well.
The new version also gets an updated amplifier. REL uses 4x 400-watt mosfet output devices coupled with a huge power supply to deliver 1000 watts, just for the one 15” driver. Loud, deep bass content is very demanding on amplifier current and can suck the life out of a wimpy power amp. The large power supply has tons of reserve so even a constant barrage of deep bass will not cause the amp to lose control of the driver. This sounds like a broken record, but this big amp and power supply are all about giving the new Predator even better speed and attack, which make those effects and deep bass in music sound more realistic.
So we’ve got a better cabinet, improved power handling on the special 15” driver, an even beefier and more powerful amp, improved foot rails, and reduced input lag. All of these tweaks to each part of the original 15” Predator add up to a big improvement anyone can hear. And like we said earlier, the best part is the price is exactly the same as the original!
Subwoofer Performance
We decided to give this new 15-inch subwoofer a tough test and pair it up with some gear a bit above its pay grade. We’ve been having a ton of fun listening to the KEF Reference 1 bookshelf speaker. This is one of the fastest bookshelf speakers we have ever heard with a super transparent midrange. The rest of this two-channel system was a McIntosh 7200 stereo receiver using the REL crossover built into the subwoofer and just letting the speakers roll off on their own, similar to how REL recommends their more expensive subs to be used. The source was a HiFi Rose RS150 streamer.
Our expectations were that a 15-inch subwoofer would have a hard time keeping up with a speaker like the KEF Reference 1. Typically we would pair these with a much higher end REL or something like it with a smaller woofer.
We played an old classic, “Gold Dust Woman” from Fleetwood Mac, to start working on dialing in the crossover and level. If you know this track, it has a repeating kick drum with a good bass line. It was pretty obvious here if we had the crossover set too high, but eventually we got a very nice blend between the KEFs. Surprisingly, the REL kept up really well adding that bottom end punch on the bass drum.
Next up - Charger by Elio. This is all electronic and starts out with another drum beat then gets into a lot of electronic bass. On this one without the sub on, we just missed the entire bottom octave. The REL blended great and really filled up the room with fast deep bass.
“Oh Yeah” by Yello. This has some fast electronic bass that will really show if your subwoofer has some overhang and we did not hear much at all here. Was it as fast as the bigger, more expensive REL’s we have heard? No, but for the cost, it did a fantastic job.
Finally, “Sub Bass Excursion” from Bassotronics. The HT1510 Predator II reached down deep on this track. While not as deep as some other subs we have tried, it was excellent for its cost.
Our overall impression was this sub can produce tons of deep bass energy and for a subwoofer that gets down as low as it does, is super fast. Of course when you build a driver, cabinet, and amp like they have in this almost 100 pound beast of a subwoofer, you would expect it!
Overall Recommendation
We see the HT 1510 Predator II mainly being used in larger-sized home theaters to provide that awesome bottom octave. The great part is, when you start playing concert videos or just using your theater for music, it will not add blur or smearing to your main speakers.
For music systems only, the REL S510 at about 30% more is probably a better choice, as it is even faster for better blending. We were just really impressed at how fast the HT1510 was in our testing.
Just bear in mind it will likely be a team effort to move it!
Details & Specs
The Best Gets Better
Predator II, the full upgrade of HT/1510, builds on REL's original home theater subwoofer (winner of Home Theater of the Year awards on multiple continents) by upgrading every component and aspect. These upgrades were based on three key learnings:
- The sound was so good, people wanted more power
- Looks matter and despite being enjoyed in the dark, a home theater subwoofer must look every bit as stunning as its audiophile-driven kin
- 3. Mating the HT/1510 with their high-level models (Serie T/x and Serie S and Reference Models) produced dazzlingly rich, full continuous theater quality bass
So Predator II received a full 1,000-watt linear power supply amplifier and new 15” (380mm) driver with 40% greater power to give people what they wanted – bigger, faster dynamics and flat out POWER. This attack is combined with a gorgeous new cabinet with sleek new proportions to perfectly mate with other REL designs for a surround sound system that truly looks as beautiful as it sounds. To make sure you received the benefits of these updates, REL developed specialized HT versions of their award-winning PerfectFilter™ that delivers flatter deep bass, now down to 20 Hz. As icing on the cake, Predator II delivers the highest .1/LFE output of any REL. Ever.
Design Isn’t Everything, It’s the Only Thing
Predator II confidently delivers massive upgrades in design elegance, performance, and execution of every detail in cabinet design. Beauty, in this case, isn’t skin deep. They start by using right-sized cabinetry, beautifully executed in horizontally line-grained black with a subtle sheen that evokes state of the art amplifiers. This brings to the HT range the same sleek, elegant proportions used in the Reference models at a fraction of the price. REL designs benefit from incorporating integral engineering solutions throughout their designs. Check out the BrilliantBrace™. Employed inside each HT/1510, it cradles the rear of the driver to eliminate shipping damage, quiets and redirects energy normally trapped in the driver, and quiets top, bottom and both sidewalls of the cabinet. Brilliant. And the full depth rails used to support and reactively brace against the powerful movements such a powerful subwoofer can produce, also means Predator II can be stacked in Line Arrays of 3/channel for the ultimate in home theater, to carry performance up the entire height of massive projection screens.
Size Matters, Now More Than Ever
There is simply something special about a large driver effortlessly distributing bass that small subs working hard can never match. At the heart of every REL lies a truly great driver. Predator II’s 15” (380mm) driver retains the combination of glass fiber and carbon fiber center cap that allows quick, reactive bass with slam that is the hallmark of great theater sound. The lightweight glass fiber allows the 3” (75mm) voice coil to accelerate Predator II’s cone instantly, while the carbon fiber center cap stiffens the composite structure, ensuring that even in the biggest of moments, its cone structure remains intact and un-phased by massive signals. Naturally, this delivers benefits for music reproduction as well. Power handling has been increased permitting the much more powerful amp to give its best without fear that the driver might not keep up. Scale, speed, and signature performance are this flagship’s reason for being.
Now Hear This
If 800 watts wasn’t enough for you, surely the 1,000-watt linear power supply amplifier in the new Predator II will cure what ails you. Featuring (4) x 400-watt mosfets and a monster power supply—it’s critically important to have massive current reserves for when the explosions and special effects hit. Predator II’s amplifier brings massive power with almost limitless reserves. This creates huge output that is available instantly, almost dismissively, and is delivered in the effortless manner worthy of the lead dog in the HT family.
Stand and Deliver
HT/1510 Predator offers one more uniquely REL innovation. For truly over the top performance, Predators are designed to be stacked up to three (3) units high using included REL Couplers™ that connect lower units to upper units. These solid, milled aluminum couplers bolt securely to each sub and along with the substantial rails on the underside of each cabinet create an extremely heavy, sturdy tower of bass. When used in stereo stacks (6 total, 3 per side) it represents over 8000 watts of peak power forcing (6) x 15” drivers to give their utmost in the service of breathtaking bass delivered in oceanic torrents of bass.
Airship II
COMBINED WITH PREDATOR II UTTERLY TRANSFORMS HOME THEATER
For the first time wireless High Level Input is made available to owners of Predator II. When combined with REL’s newest Airship II, the latest state of the art Texas Instruments ADC-DAC chips, and REL’s world- famous High Level Input circuitry, permit Predator II owners to add High Level Inputs driven off one’s main amplifier outputs. When one’s receiver or av processor is set properly, this delivers professional transfer studio sound, sound that delivers rich, full range sound, at all times. Not the thin strained but once-in-awhile-something-goes-bang sound that annoys in traditional home theater.
HT-Air™
ZERO COMPRESSION WIRELESS COMPATIBLE
There is wireless and there is REL wireless. REL is well-known for having the finest wireless purpose-built systems in the entire component audio world. Though HT-Air™ is affordable, it retains their corporate fixation on zero compression and maximum dynamics delivered via a 5.8 gigahertz network. HT-Air is designed to leave old fashioned Bluetooth-based systems in the dust, delivering latency in the 16-20 millisecond range. This permits owners to place their HT/1508 Predator where it works best for them without resorting to unsightly cables being strewn across the landscape of your living room, all while retaining our category-leading super-fast wireless.
| Model | HT/1510 Predator |
|---|---|
| Type | Closed box, front-firing driver |
| Driver Size | 15" |
| Driver Material | Carbon fiber reinforced cone with inverted carbon fiber center cap |
| Low Frequency Extension | -6 dB at 20Hz |
| Inputs | Low Level stereo RCA LFE RCA LFE XLR |
| Outputs | Low Level stereo RCA LFE RCA LFE XLR |
| Power Output | 1000 Watts (RMS) |
| Amplifier Type | Linear Power Supply with Class D output |
| Wireless Capability | Yes- REL HT-Air system (required, sold separately) |
| Dimensions (WHD per speaker including feet and controls) | 21.3 × 18 × 19.4 in (540 × 457 × 494 mm) |
| Finish | Black Vinyl |
