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  4. Hertz Car Subwoofers
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RMS Power Handling
The RMS power is the amount of power the speaker requires to operate safely and properly. RMS Power Handling refers to the amount of power a speaker can handle on a continuous basis. We recommend powering your speakers or subwoofer with 80%-120% of its recommended RMS rating. The RMS power handling specification is typically rated per speaker unless otherwise noted.
Peak Power Handling
Peak power handling refers to the amount of power a speaker can handle during a brief musical burst. The RMS power range figure is a much more reliable rating for determining the speaker's power requirements. The Peak power handling specification is typically rated per speaker unless otherwise noted.
Series
Many brands group their products into series or lines of products to help customers know the level of quality (good, better, best for example). You can filter by series and the brand using our guided browsing.
Subwoofer Size
Refers to the diameter of the subwoofer, measured in inches.
Shallow Mount Installation
This means that the subwoofer/speaker is designed to be installed in areas that do not have a lot of space. Shallow mount subwoofers are typically found under a seat or behind the seat in some trucks.

Shallow mount speakers will typically have a mounting depth of 2" or less, while shallow mount subwoofers will typically have a mounting depth of 3" or less.
Top-Mount Depth (Mounting Depth)
The depth when installed on top of the mounting surface. Measured from the bottom of the speaker's magnet to the bottom of the mounting holes on the rim of the speaker.
Voice Coil(s)
Dual voice coil subs have more wiring flexibility than single voice coils subs; however, single voice coil subwoofers provide easier hookup options for wiring multiple subwoofers in parallel or series. You may also run a dual voice coil (DVC) sub in parallel, series, or combination. A quad voice coil has four voice coils and is equal to two dual voice coil subwoofers as far as wiring goes.
Impedance (Per Voice Coil)
The load value (in ohms) that the speakers present to the amplifier per voice coil - the amount of resistance to the current flow. This is a key specification as subs wired in parallel or low impedances can create problems with your amplifier and potentially void all warranties. We encourage you to ask our support department prior to purchase if you do not understand which impedance level will suit your application best.
Subwoofer Design
This is the design of the subwoofer or the opening of the subwoofer enclosure. Each design has it's own benefits, whether it is a square, circle, or oval.

Round/Circle: This is the typical and common subwoofer design. They have a round cone and are a circle in design.

Square: These woofers are able to achieve a greater cone area in a smaller space. Because of the greater surface area, some square subwoofers will be louder than a round subwoofer of the same size.

Sensitivity
An efficiency or sensitivity rating tells you how effectively a speaker converts power into sound. The higher the number, the more efficient the speaker and the louder it will play with the same input power. An efficient speaker helps you maximize your available power. Most sensitivity ratings measure the speaker's output with 1 watt of input, 1 meter from the speaker. Some speakers' sensitivity is measured with 2.83 volts of input, instead of 1 watt.
  Efficiency (1w/1m) is not an accurate indicator of a subwoofer's output capability and should not be used as a comparison to other speakers or subwoofers to determine which one is "louder".
Main Cone Color
This is the color of the speaker's or subwoofer's cone.
Recommended Enclosure Type
This is the recommended type of enclosure that the subwoofer should be installed into. Some subwoofers are specially designed for particular enclosures.

Sealed: These enclosures completely enclose the air inside the box. These boxes produce a tight bass.

Ported/Vented: These enclosures have a slot of air to escape from the box. The result is a sound that has more "boom".

Bandpass: These are a combination of both sealed and ported enclosures. They can be very efficient, but require tuning for the best response.

Xmax (millimeters)
Typically measured in millimeters, the Xmax value is the measure of a speaker cone's maximum excursion in one direction while maintaining a linear behavior.
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Hertz CS 200 S4

300W Peak (150W RMS) 8" Cento Series Single 4-ohm Car Subwoofer

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Hertz CS 200 S4

300W Peak (150W RMS) 8" Cento Series Single 4-ohm Car Subwoofer

• Peak Power: 300 watts
• RMS Power: 150 watts
• Impedance: Single 4 ohm
• Polypropylene cone
• Rubber surround
• Mount depth: 3.98"
• Sensitivity: 84 dB

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List price $255.00
-10% $229.99

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Hertz MPS 250 S2

1000W Peak (500W RMS) 10" Mille Pro Series Single 2-ohm Shallow Car Subwoofer

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Hertz MPS 250 S2

1000W Peak (500W RMS) 10" Mille Pro Series Single 2-ohm Shallow Car Subwoofer

• Peak Power: 1000 watts
• RMS Power: 500 watts
• Impedance: Single 2 ohm
• Polypropylene Cone material
• Rubber Surround material
• Mount depth: 3.25"
• Sensitivity: 82.5 dB

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Hertz HMS 10 B-C2

500W Peak (250W RMS) 10" HMS Series Single 2-ohm Marine Subwoofer in Black with Black Grille

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Hertz HMS 10 B-C2

500W Peak (250W RMS) 10" HMS Series Single 2-ohm Marine Subwoofer in Black with Black Grille

• Peak Power: 500 watts
• RMS Power: 250 watts
• Impedance: Single 2 ohm
• Polypropylene cone
• Mount depth: 5.71"
• Sensitivity: 88.5 dB

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List price $450.00
-11% $399.99

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Hertz HMS 10 B2

500W Peak (250W RMS) 10" HMS Series Single 2-ohm Marine Subwoofer in White with White Grille

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Hertz HMS 10 B2

500W Peak (250W RMS) 10" HMS Series Single 2-ohm Marine Subwoofer in White with White Grille

• Peak Power: 500 watts
• RMS Power: 250 watts
• Impedance: Single 2 ohm
• Polypropylene cone
• Mount depth: 5.71"
• Sensitivity: 88.5 dB

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List price $450.00
-11% $399.99

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Hertz HMS 12 S2-LD-G (Open Box, Great)

1000W Peak (500W RMS) 12" HMS Series Single 2-ohm Marine Subwoofer with LED Lighting (Gray)

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Hertz HMS 12 S2-LD-G (Open Box, Great)

1000W Peak (500W RMS) 12" HMS Series Single 2-ohm Marine Subwoofer with LED Lighting (Gray)

• Peak Power: 1000 watts
• RMS Power: 500 watts
• Impedance: Single 2 ohm
• Sports gray subwoofer grille included
• UV-Treated Polypropylene Cone
• Santoprene Rubber Surround
• Mount depth: 5.71"
• Sensitivity: 89.5 dB

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• Peak Power: 1000 watts
• RMS Power: 500 watts
• Impedance: Single 2 ohm
• Sports gray subwoofer grille included
• UV-Treated Polypropylene Cone
• Santoprene Rubber Surround
• Mount depth: 5.71"
• Sensitivity: 89.5 dB

Hertz HMS 10 B-C

500W Peak (250W RMS) 10" HMS Series Single 2-ohm Marine Subwoofer in Black with Black Grille

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Hertz HMS 10 B-C

500W Peak (250W RMS) 10" HMS Series Single 2-ohm Marine Subwoofer in Black with Black Grille

• Peak Power: 500 watts
• RMS Power: 250 watts
• Impedance: Single 4 ohm
• Polypropylene cone
• Santoprene Rubber surround
• Mount depth: 5.71"
• Sensitivity: 88 dB

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List price $450.00
-11% $399.99

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Hertz MPS 300 S4

1000W Peak (500W RMS) 12" Mille Pro Series Single 4-ohm Shallow Car Subwoofer

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Hertz MPS 300 S4

1000W Peak (500W RMS) 12" Mille Pro Series Single 4-ohm Shallow Car Subwoofer

• Peak Power: 1000 watts
• RMS Power: 500 watts
• Impedance: Single 4 ohm
• Polypropylene Cone material
• Rubber Surround material
• Mount depth: 3.46"
• Sensitivity: 85 dB

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List price $695.00
-14% $599.99

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Hertz CBA 250

500W Peak (250W RMS) Loaded Single 10" Amplified Sealed Enclosure

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Hertz CBA 250

500W Peak (250W RMS) Loaded Single 10" Amplified Sealed Enclosure

• 10" Amplified Loaded Subwoofer System
• 250 watts RMS
• Built-In Class D Amplifier
• High-level audio input on multi-pin connector
• Wired Remote Bass Level Control
• 2S² (2 Sides / 2 Sounds) design

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List price $785.00
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Hertz DST 30.3B

1000W Peak (250W RMS) Loaded Single 12" Vented Tube Enclosure

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Hertz DST 30.3B

1000W Peak (250W RMS) Loaded Single 12" Vented Tube Enclosure

• Ported enclosure with 1 12" DST Series Subwoofer
• 250 watts RMS (1000 watts Peak)
• Final Impedance: 4-ohm
• Dimensions: 26" L x 26" W

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List price $320.00
-13% $279.99

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Hertz MPBX 250 S2

1000W Peak (500W RMS) Loaded Single 10" Shallow Sealed Enclosure

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Hertz MPBX 250 S2

1000W Peak (500W RMS) Loaded Single 10" Shallow Sealed Enclosure

• Sealed enclosure with 1 10" Mille Pro Series Subwoofer
• 500 watts RMS (1000 watts Peak)
• Final Impedance: 2-ohm
• Dimensions: 20.9" L x 6.30" H x 14.21" W

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List price $810.00
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Hertz HMS 10 B

500W Peak (250W RMS) 10" HMS Series Single 4-ohm Marine Subwoofer in White with White Grille

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Hertz HMS 10 B

500W Peak (250W RMS) 10" HMS Series Single 4-ohm Marine Subwoofer in White with White Grille

• Peak Power: 500 watts
• RMS Power: 250 watts
• Impedance: Single 4 ohm
• Polypropylene cone
• Santoprene Rubber surround
• Mount depth: 5.71"
• Sensitivity: 88 dB

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List price $450.00
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Hertz MPS 300 S2

1000W Peak (500W RMS) 12" Mille Pro Series Single 2-ohm Shallow Car Subwoofer

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Hertz MPS 300 S2

1000W Peak (500W RMS) 12" Mille Pro Series Single 2-ohm Shallow Car Subwoofer

• Peak Power: 1000 watts
• RMS Power: 500 watts
• Impedance: Single 2 ohm
• Polypropylene Cone material
• Rubber Surround material
• Mount depth: 3.46"
• Sensitivity: 84.5 dB

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List price $695.00
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Hertz CS 300 S2

700W Peak (350W RMS) 12" Cento Series Single 2-ohm Shallow Mount Car Subwoofer

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Hertz CS 300 S2

700W Peak (350W RMS) 12" Cento Series Single 2-ohm Shallow Mount Car Subwoofer

• Peak Power: 700 watts
• RMS Power: 350 watts
• Impedance: Single 2 ohm
• Polypropylene Cone
• Rubber Surround
• Mount depth: 5.12"
• Sensitivity: 86.5 dB

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List price $340.00
$329.99

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Hertz CS 300 S4

700W Peak (350W RMS) 12" Cento Series Single 4-ohm Shallow Mount Car Subwoofer

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Hertz CS 300 S4

700W Peak (350W RMS) 12" Cento Series Single 4-ohm Shallow Mount Car Subwoofer

• Peak Power: 700 watts
• RMS Power: 350 watts
• Impedance: Single 4 ohm
• Polypropylene Cone
• Rubber Surround
• Mount depth: 5.12"
• Sensitivity: 86.5 dB

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List price $340.00
$329.99

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Hertz ML 2500.3

1400W Peak (700W RMS) 10" Mille Legend Series Single 4-ohm Subwoofer

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Hertz ML 2500.3

1400W Peak (700W RMS) 10" Mille Legend Series Single 4-ohm Subwoofer

• Peak Power: 1400 watts
• RMS Power: 700 watts
• Impedance: Single 4 ohm
• Pressed Pulp Fiber Cone
• Butyl Rubber Surround
• Mount depth: 5.4"
• Sensitivity: 88 dB

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List price $1390.00
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Hertz DS 25.3

600W Peak (150W RMS) 10" Dieci Series Single 4-ohm Subwoofer

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Hertz DS 25.3

600W Peak (150W RMS) 10" Dieci Series Single 4-ohm Subwoofer

• Peak Power: 600 watts
• RMS Power: 150 watts
• Impedance: Single 4 ohm
• Mica Injected Polypropylene - MIPP cone
• Butyl Rubber surround
• Mount depth: 4.1"
• Sensitivity: 89 dB

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Hertz MP 250 D4.3

1200W Peak (600W RMS) 10" Mille Pro Series Dual 4-ohm Car Subwoofer

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Hertz MP 250 D4.3

1200W Peak (600W RMS) 10" Mille Pro Series Dual 4-ohm Car Subwoofer

• Peak Power: 1200 watts
• RMS Power: 600 watts
• Impedance: Dual 4 ohm
• Pressed Pulp Fiber cone
• Butyl Rubber surround
• Mount depth: 5.55"
• Sensitivity: 83.5 dB

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List price $575.00
$549.99

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Hertz SS 15 D2

2400W Peak (1200W RMS) 15" SPL Show Series Dual 2-ohm Car Subwoofer

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Hertz SS 15 D2

2400W Peak (1200W RMS) 15" SPL Show Series Dual 2-ohm Car Subwoofer

• Peak Power: 2400 watts
• RMS Power: 1200 watts
• Impedance: Dual 2 ohm
• Non-Pressed Paper cone
• Foam surround
• Mount depth: 7.4"

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Hertz DS 30.3

1000W Peak (250W RMS) 12" Dieci Series Dual 4-ohm Car Subwoofer

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Hertz DS 30.3

1000W Peak (250W RMS) 12" Dieci Series Dual 4-ohm Car Subwoofer

• Peak Power: 1000 watts
• RMS Power: 250 watts
• Impedance: Dual 4 ohm
• Mica Injected Polypropylene - MIPP cone
• Butyl Rubber surround
• Mount depth: 4.7"
• Sensitivity: 91 dB

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List price $165.00
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Hertz MPBX 300 S2

1000 Peak (500 RMS) 12" S2 Series Single 2 ohms Subwoofer Loaded Enclosure

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Hertz MPBX 300 S2

1000 Peak (500 RMS) 12" S2 Series Single 2 ohms Subwoofer Loaded Enclosure

• Peak Power: 1000 watts
• RMS Power: 500 watts
• Impedance: Single 2 ohm
• Polypropylene Cone
• Rubber Surround

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List price $925.00
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