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Hertz Mille Pro MPS 250 S4 / S2 10" (25cm) Flat Subwoofer

7 Reviews

500 Watt
Hertz

Mille Pro MPS 250 S4 / S2

10" (25cm) Flat Subwoofer

7 Reviews

Technical Highlights

  • 500 W continuous power, 2 Ohm impedance, frequency response 25-400 Hz.
  • Ultra-flat design, high diaphragm excursion, compact housing.
  • Die-cast aluminum, AIR technology, high heat capacity.
  • More technical details
€319,00
€319,00 €319,00
5% discount with prepayment
inkl. VAT , possibly plus shipping
Impedance: S4 (1x4 Ohm)
Delivery
Apr 12, - Apr 15,
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Mille Pro MPS 250 S4 / S2 by Hertz

Hertz Mille Pro MPS 250 S4 / S2 is a 10-inch (25 cm) flat subwoofer with an ultra-flat mounting depth of 83.6 mm and installation depth of 82.6 mm. The continuous power handling is 500 W, with a peak power handling of 1000 W. Features a 38 mm six-layer copper voice coil, aluminum die-cast design, and non-vented rear design. Air Intercooling REvolution (A.I.R.) to prevent air compression. Mechanical displacement +20% compared to conventional designs, Xmax 16.8 mm and Xmech 20 mm. Frequency response 25–400 Hz, magnet made of high-density ferrite, polypropylene cone. Sturdy, screwless mesh grille included and 8-AWG connectors. Optimized for extremely compact, sealed enclosures.

Features
  • 10-inch (25 cm) flat subwoofer
  • Ultra-flat mounting 83.6 mm
  • Installation depth 82.6 mm
  • Continuous power handling 500 W
  • Peak power handling 1000 W
  • Optimized for extremely compact, sealed enclosures
  • Aluminum die-cast design
  • Non-vented rear design
  • 38 mm six-layer copper voice coil
  • A.I.R. Air Intercooling REvolution
  • Sturdy, screwless mesh grille included
  • 8-AWG connectors
  • Frequency response 25–400 Hz
  • Weight 5.11 kg
  • Magnet: high-density ferrite
  • Cone: polypropylene
Technical Specifications
  • Size 250 mm
  • Voice coil type single
  • Voice coil Ø 38 mm
  • Magnet size 134 x 55 x 36 mm
  • Xmax 16.8 mm
  • Xmech 20 mm
  • Impedance 2 Ohm (S2)
  • Electro-acoustic data S4: D 216.6 mm; Re 3.3 Ohm; Fs 29 Hz; Le 3.65 mH; Mms 234 g; Cms 0.11 mm/N; BIS 17.3 T*m; Qts 0.48; NS 0.52; Qms 5.6; SPL 83.5 dB
  • Electro-acoustic data S2: D 216.6 mm; Re 2.2 Ohm; Fs 28 Hz; LE 2.67 mH; Mms 250 g; Cms 0.13 mm/N; BIS 14.7 T*m; Qts 0.41; NS 0.45; Qms 5.3; SPL 82.5 dB
  • Physical dimensions: A 274.5 mm; B 231.6 mm; C 103.2 mm; D 82.6 mm; E 244.6 mm; F 38.9 mm
  • Sealed enclosure: Volume 14.2 l net; FC 49 Hz; Qtc 0.81
  • Sealed enclosure external dimensions: W 386 mm; H 352 mm; D 160 mm
  • Mounting hole M 232 mm (sealed)
  • Wood thickness 16 mm (sealed)
  • Panel cut for sealed: 386 x 352 mm (quantity 2); 386 x 128 mm (quantity 2); 320 x 128 mm (quantity 2)
  • Reflex box: Volume 19 l; Fb 35.5 Hz
  • Reflex box external dimensions: W 713 mm; H 372 mm; D 130 mm; Z 146 mm; P 98 mm; S 52.3 mm
  • Mounting hole M 232 mm (reflex)
  • Wood thickness 16 mm (reflex)
  • Panel cut for reflex: 713 x 372 mm (quantity 2); 713 x 98 mm (quantity 2); 340 x 98 mm (quantity 1); 288 x 98 mm (quantity 1); 495 x 98 mm (quantity 1)

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Hertz Mille Pro MPS 250 S4 / S2 Datasheet

Open datasheet

Frequently Asked Questions about Mille Pro MPS 250 S4 / S2

What is the maximum power of the Mille Pro MPS 250 S4/S2 Subwoofer?

The Mille Pro MPS 250 S4/S2 Subwoofer from Hertz offers an impressive maximum power handling of 1000 watts. This means it can effortlessly handle short-term power peaks, which is particularly beneficial for dynamic music pieces. The continuous power rating is 500 watts, highlighting its suitability for continuous playback of intense bass signals. These power specifications are specifically optimized for ultra-compact, sealed enclosures, allowing for efficient use even in limited space. The deep frequency range of 25 to 400 Hz provides rich bass reproduction.

What are the dimensions of the Hertz Mille Pro MPS 250 S4/S2?

The Hertz Mille Pro MPS 250 S4/S2 has a particularly flat design with a mounting depth of only 82.6 mm, making it ideal for installation in tight spaces. The overall diameter of the Subwoofer is 250 mm, giving it its 10-inch classification. Other important dimensions include a total width of 274.5 mm and a height of 231.6 mm. These compact dimensions allow the Subwoofer to be installed in small, sealed enclosures with a volume of just 14.2 liters, making it perfect for vehicles with limited space.

Are there any special design features in the Mille Pro MPS 250 S4/S2?

The Mille Pro MPS 250 S4/S2 is characterized by several innovative design features. A highlight is the aluminum die-cast chassis, which provides structural integrity and heat dissipation. The voice coil is a six-layer copper version with a diameter of 38 mm, ensuring high thermal capacity. Additionally, the patented A.I.R. (Air Intercooling Revolution) system offers optimized air circulation, prevents air compression, and contributes to cooling. Combined with a non-vented rear design, it minimizes enclosure depth while the 20% higher diaphragm excursion allows for powerful bass.

What is the frequency response of the Hertz Mille Pro MPS 250 S4/S2?

The frequency range of the Hertz Mille Pro MPS 250 S4/S2 extends from 25 Hz to 400 Hz, covering a wide range of deep frequencies for an intense listening experience. The Subwoofer is specifically designed for optimal response in sealed enclosures, ensuring precise and powerful bass reproduction. With an enclosure adjustment, such as a non-reflex design, the Qts of 0.48 and Qms of 5.6 protect the sound from unwanted distortions and ensure consistent, clean bass production even at high sound pressure levels.

What mounting options does the Mille Pro MPS 250 S4/S2 offer?

Thanks to its ultra-flat design with a depth of only 82.6 mm, the Mille Pro MPS 250 S4/S2 is ideal for tight installation spaces, such as under the rear seat of a pickup. For even better adaptation to your vehicle, the Subwoofer can be integrated into a compact, sealed enclosure with a volume of only 14.2 liters, taking up minimal space. This makes it perfect for installations in vehicles with limited space where a deep, powerful bass foundation is desired despite spatial constraints.

How do the Thiele-Small parameters affect the Mille Pro MPS 250 S4/S2?

The Thiele-Small parameters, specifically the Qts and Fs parameters, are essential for the Mille Pro MPS 250 S4/S2. A Qts value of 0.48 indicates balanced damping, ideal for sealed enclosures. The Fs (resonance frequency) is at 29 Hz, which benefits the Subwoofer with particularly effective deep bass. Its low resistance Re of 3.3 Ohms allows it to be compatible with various amplifier systems, while the CMS of 0.11 mm/N describes the compliance of the diaphragm. These parameters optimize bass reproduction and ensure powerful, clear sound.

How does the Hertz Mille Pro MPS 250 S4/S2 focus on innovation in design?

The Mille Pro MPS 250 S4/S2 combines innovative design with technical precision. Thanks to the special support structure for the spider and coil, it achieves a diaphragm excursion of +20% compared to conventional Subwoofers. This maintained performance depth ratio enhances sound quality even in tight build spaces. The magnet has been cleverly shifted inward, which not only reduces depth but also maximizes the linear diaphragm excursion. This thoughtful design significantly improves bass reproduction and ensures that the Subwoofer delivers peak performance even under cramped conditions.

What is the significance of the voice coil in the Hertz Mille Pro MPS 250 S4/S2?

The voice coil in the Hertz Mille Pro MPS 250 S4/S2 is crucial for its performance. With a diameter of 38 mm and a six-layer copper winding, it ensures high thermal capacity and thus stability during intense use. This construction allows the Subwoofer to handle high loads without overheating. The robust design also contributes to the accuracy of bass reproduction by controlling the movement of the diaphragm. This results in clear and powerful bass production that remains precise even at high volumes.

What enclosure adjustments are recommended for the Hertz Mille Pro MPS 250 S4/S2?

For the Hertz Mille Pro MPS 250 S4/S2 Subwoofer, closed enclosures with a volume of about 14.2 liters are optimal to fully exploit its bass capabilities. This adjustment ensures a damped yet precise bass reproduction, ideal for cross-genre music styles. Reflex designs are also possible if a higher sound pressure level is desired and space allows. This adjustment highlights the bass energy in the range of 40 Hz to 80 Hz. Using 16 mm thick wood for the enclosure provides additional stability and durability.

How does the non-vented design affect the Hertz Mille Pro MPS 250 S4/S2?

The non-vented design of the Hertz Mille Pro MPS 250 S4/S2 Subwoofer significantly contributes to reducing the enclosure depth without compromising acoustic performance. This construction minimizes the required installation height and is therefore particularly advantageous for installation locations with limited space. At the same time, the design allows for increased diaphragm excursion, which provides powerful low tones. The concept supports heat dissipation while simultaneously reducing compression, which in turn benefits sound quality, especially during intense bass reproduction over extended periods.

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