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Hertz ML 2500.3

Mille Legend Series 10" 4-ohm component subwoofer

Item # 301ML25003

When Hertz began producing car speakers in 1979, their aim was to create speakers that take your music to the next...

Read more from Crutchfield writer, Bob B.

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About the Hertz ML 2500.3

Made to excel

When Hertz began producing car speakers in 1979, their aim was to create speakers that take your music to the next level. They developed the Mille Series using tough, high-quality materials and advanced design to bring you the best in sound reproduction. Their ML 2500.3 10" subwoofer offers extreme power handling capabilities to help you build a system with truly huge bass, and it's designed for smaller enclosures so you get more installation options.

Made to excel

When Hertz began producing car speakers in 1979, their aim was to create speakers that take your music to the next level. They developed the Mille Series using tough, high-quality materials and advanced design to bring you the best in sound reproduction. Their ML 2500.3 10" subwoofer offers extreme power handling capabilities to help you build a system with truly huge bass, and it's designed for smaller enclosures so you get more installation options.

Designed for high fidelity

The ML 2500.3 features the technically advanced V-cone®, which keeps its shape even at high volume levels to minimize distortion. The pressed pulp of the cone is combined with mineral powders for additional rigidity, while the rubber surround keeps things under control. The sub's aluminum alloy frame is designed to minimize resonance so it'll produce rich, clear bass while handling tremendous amounts of power. 

Power handling to spare

With 700 watts of continuous power handling (1400 watts peak), the ML 2500.3 will produce enough low end to satisfy even the most demanding listener. This sub is designed for use in compact sealed enclosures so you'll get maximum bass from your space. If you're ready to rumble, this sub will give you all the bass you can handle. 

To drive this single subwoofer, we recommend a mono amplifier rated between 550 and 1050 watts RMS at 4 ohms. For more information, please refer to our article on How to Match Subwoofers and Amplifiers.

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Product highlights:

  • 10" 4-ohm subwoofer
  • mineral-injected paper cone with rubber surround
  • aluminum alloy basket
  • 4" voice coil
  • handles up to 700 watts continuous (1400 watts peak)
  • frequency response: 27-500 Hz
  • sensitivity: 88 dB
  • top-mount depth: 5-3/8"
  • sealed box volume: 0.6 - 0.88 cu. ft.
  • grille not included
  • warranty: 2 years
  • Our 60-day money-back guarantee
  • MFR # ML 2500.3
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What's in the box:

  • One 10" Subwoofer
  • Ten 1-3/8" Allen head screws (4mm)
  • 10 Speed clips
  • 4mm Allen head bit
  • Owner's manual (English/ Spanish/ French/ German/ Italian/ Portuguese/ 21 Others)
  • Template on box

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Features

Terminals: The spring post terminals will accept pin connectors, single banana plugs (but not dual), and bare wire up to 8 gauge.

Boundary Free Surround: This technology provides more cone surface area than other speakers of the same size, enabling it to move more air. The surrounds are made of butyl rubber, ensuring thermal and mechanical linearity.

Klippel Verified: The Klippel distortion analyzer, a device that uses a laser and computer software to do large-scale analysis of drivers in motion, helps Hertz optimize the speaker's motor structure, voice coil alignment, and suspension to yield the best possible performance.

Sealed Box: Hertz lists two sealed enclosure recommendations in the manual, a compact design of 17 liters (0.6 ft³), and a performance design of 25 liters (0.88 ft³). Sealed enclosures provide the most control over a woofer, will handle a lot of power, and provide accurate sonic reproduction, making them suitable for all types of music.

Crossover: Hertz recommends the low pass crossover point be 60 Hz - 70 Hz when using the compact enclosure. With the performance enclosure, the recommended crossover point is 60 Hz - 80 Hz. They also recommend a subsonic filter at 10 Hz and that both crossovers have a 24 dB/octave slope.

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