Why Choose Crutchfield?
Great gear and expert advice
Our experts help you pick the ideal gear for your needs.Meet our advisors
Free tech support for the life of your gear.Read about our one-on-one expert help
You may return items that are complete and like new for any reason within 60 days.See the details of our return policy
Earn one point for every dollar you spend and use those points to save on future purchases.Get full details on Crutchfield Rewards
Deep discounts on car installation gear
Trusted since 1974
Our customers have trusted us with their business, and they’ve helped us win awards for our service.Check out our most recent awards
The manufacturer’s warranty always applies.See more details
Diamond Audio's statement subwoofer
You're passionate about music — and sometimes it takes a sub of almost mythic proportions to get it right. Diamond Audio designed this monumental HEX PRO Series HP12 12" subwoofer for dead-on, accurate bass and extreme performance.
Hexagonal honeycomb woofer
This HEX PRO Series 12" sub features a unique honeycomb core, sandwiched between two thermally bonded layers of Kevlar, the same material used to make bulletproof vests. The resulting composite is exceptionally rigid, and also close to 70% lighter than conventional paper or polymer woofers. This featherlight cone can reproduce bass and midbass frequencies in your music with pinpoint accuracy.
Ultra-efficient motor assembly
Engineers at Diamond Audio know that heat stresses a subwoofer, so they use several techniques to remove heat from the motor structure. The HEX Pro sub houses a high-temperature neodymium magnet inside its 3-1/2" voice coils, where aluminum frames act as a heat sink to draw damaging heat away from the magnet. A special thermal paste fills in the space between the voice coil and surrounding aluminum to insure optimal heat transfer.
The aluminum basket shunts off radiated heat quickly and efficiently. For even more relief from heat, an aluminum dust cap directs heat upwards and outwards, so it doesn't end up trapped in your subwoofer enclosure. A cool-running motor assembly means you'll get the cleanest, strongest performance from this woofer.
Non-resonant aluminum basket
The cast aluminum basket gives this sub the stable foundation it needs to deliver faithful, uncolored bass for the lifetime of your system. Diamond Audio's proprietary O2 casting technique creates a denser, less porous basket that virtually eliminates unwanted resonance, so your favorite music sounds just as the artist intended.
- 12" subwoofer with dual 2-ohm voice coils
- Kevlar composite hexagonal honeycomb cone
- nitrile butadine rubber surround
- cast aluminum basket
- power range: 80-800 watts RMS (1600 watts peak power)
- frequency response: 20-250 Hz
- sensitivity: 85.4 dB
- top-mount depth: 8"
- sealed box volume: 1.0 cubic feet
- ported box volume: 1.75 cubic feet
- warranty: 1 year
- Our 60-day money-back guarantee
What's a component sub and why would I want one?
A component sub is simply a speaker that's designed to reproduce bass once it's installed in a compatible enclosure. Think about the impact of a movie soundtrack in a big theater or even in your own home HDTV setup. A component sub can add the same kind of power to the music in your car. And a car sub is not all about the boom that you hear on a street corner (although that's cool too) - you can pair a component sub with your choice of enclosure to get bass just the way you like it, from tight and punchy to fat and loose. And once you experience music in your car with a well-tuned subwoofer, you'll never go back.
Diamond Audio HP12 Reviews
What's in the box?
- 12" Dual 2-ohm voice coil subwoofer
- Rubber trim-ring (installed)
- 3mm Allen wrench
- Eight 1-1/8" Self-tapping screws
- Installation manual
- Cardboard template
Features and Specs
|Cone Material||Kevlar aramid reinforced|
|Ideal Sealed Box Volume (cubic feet)||1|
|Ideal Ported Box Volume (cubic feet)||1.75|
|Port diameter (inches)||4|
|Port length (inches)||16|
|Dual Voice Coil||Yes|
85.4 dB at 2.83 volts
|Frequency Response||20 - 250 Hz|
|RMS Power Range (Watts)||800-160|
|Peak Power Handling (Watts)||1600|
|Top Mount Depth (inches)||7 7/8|
|Bottom Mount Depth (inches)||N/A|
|Cutout Diameter or Length (inches)||10 15/16|
|Parts Warranty||1 Year|
|Labor Warranty||1 Year|
Dual 2Ω Voice Coils: The HP12 features dual 2Ω voice coils. When the voice coils are wired in parallel, the woofer presents a 1Ω load; when wired in series, the woofer presents a 4Ω load.
TDX Technology: Diamond Audio's Thermal-Dyne eXtreme (TDX) is a system designed to eliminate the detrimental effects of heat on a speaker. The motor structure uses a Neodymium magnet mounted inside the voice coil; the geometry, venting, and material has been optimized to improve heat dissipation. The cast aluminum frame acts as a heat sink for the encapsulated motor structure. A special thermal paste is used between the motor case and aluminum frame to insure maximum heat transfer. The aluminum dust cap also acts as a heat sink for the voice coil.
NBR Surround: The woofer features a Nitrile Butadiene Rubber (NBR) surround, a synthetic rubber that stands up to the harsh automotive environment.
Set-Screw Terminals: The set-screw terminals will accept bare wire up to 8-gauge. A 3mm Allen wrench is included to tighten/loosen the terminals.
Concealing Ring: The included rubber trim-ring provides a mounting gasket and covers the mounting screws, giving the subwoofer a finished look.
Sealed Enclosure: Two recommended sealed box volumes are listed in the manual; 1.0 cubic feet is given as the optimum size, and 2.0 cubic feet is labeled as a large enclosure.
Vented Enclosure: The recommended vented box volume is 1.75 cubic feet with a 4" diameter, 16" long port; resulting in a tuning frequency of 35 Hz. A 30 Hz sub-sonic filter is recommended for vented enclosures.
Our Product Research Team
At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team. They verify what’s in the box, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.