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  1. Home
  2. Car Audio & Electronics
  3. Car Speakers
  4. 4" Speakers

4" Speakers

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Speaker Size
Refers to the size of the speaker measured in inches. Every vehicle has standard application sizes. Please use our vehicle fitment guide for your vehicle's specific speaker sizes if you do not know them.
Design
The number of individual drivers in a car speaker. Speakers with 2 drivers are known as a 2-way, and 3 drivers are known as a 3-way. Component systems are often referred to as "separates" because the tweeter is not attached to the midwoofer (main speaker driver) and mounts separately in a location such as a door post. Component systems typically come with an external crossover so you can easily adjust the high and low frequencies sent to both the midwoofer and the tweeter. Center channel speakers are great for those looking to have surround sound in their vehicle.
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.
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".
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.
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.
Tweeter Design
Designs such as cone, dome, semi-dome, balanced dome, and whizzer are most popular. Cone tweeters are simple, efficient and typically are the most reasonably priced. Dome tweeters are used in most home speakers, and provide a smoother and more accurate sound. Semi-dome design is one with a dome placed inside a cone. A Balanced dome driver is a semi-dome with equal reproduction area given the cone and dome portions of the driver. A whizzer tweeter is a separate tweeter cone driven by the voice coil of the woofer.
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.
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Rockford Fosgate Punch P142 (Open Box, Great)

120W Peak (60W RMS) 4" Punch Series 2-way 4-ohm Coaxial Car Speakers

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Rockford Fosgate Punch P142 (Open Box, Great)

120W Peak (60W RMS) 4" Punch Series 2-way 4-ohm Coaxial Car Speakers

• 60 watts Peak Each, 30 watts RMS Each
• 3/4" PEI (Polyetherimide) Dome tweeters
• Injection-molded mineral-filled polypropylene cone material with VAST technology
• Impedance: 4 ohm
• Sensitivity: 86.5 dB

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Free or discounted install kits when available.

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11
List price $109.99
-15% $93.49 /pair

In stock

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JL Audio C2-400x (Open Box, Great)

100W Peak (70W RMS) 4” Evolution C2 Series 2-way 4-ohm Coaxial Car Speakers

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JL Audio C2-400x (Open Box, Great)

100W Peak (70W RMS) 4” Evolution C2 Series 2-way 4-ohm Coaxial Car Speakers

• 50 watts Peak Each, 35 watts RMS Each
• 0.75" Silk Dome Tweeters
• 2 speaker grilles included
• Mica Injected Polypropylene - MIPP cone material
• Impedance: 4 ohm
• Sensitivity: 87.5 dB

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Free or discounted install kits when available.

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9
List price $189.99
-15% $161.49 /pair

In stock

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Rockford Fosgate Prime R14X2 (Open Box, Great)

120W Peak (60W RMS) 4” Prime Series 2-way 4-ohm Coaxial Car Speaker

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Rockford Fosgate Prime R14X2 (Open Box, Great)

120W Peak (60W RMS) 4” Prime Series 2-way 4-ohm Coaxial Car Speaker

• 60 watts Peak Each, 30 watts RMS Each
• 1/2" Silk Dome tweeters
• Vacuum polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 85 dB

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Free or discounted install kits when available.

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14
List price $64.99
-22% $50.99 /pair

In stock

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Limited time!

NVX NSP4

300W Peak (100W RMS) 4" N-Series 2-Way Coaxial Car Speakers

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NVX NSP4

300W Peak (100W RMS) 4" N-Series 2-Way Coaxial Car Speakers

• 150 watts Peak Each, 50 watts RMS Each
• 3/4" Silk Dome tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 86 dB
• Mounting Depth: 1.88"

Free Speaker Accessory at Checkout!
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Free or discounted install kits when available.

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25
List price $59.99
-25% $44.99 /pair

In stock

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Used from: $27.99
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NVX VSP4

450W Peak (150W RMS) 4" V-Series 2 Way Coaxial Car Speakers

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NVX VSP4

450W Peak (150W RMS) 4" V-Series 2 Way Coaxial Car Speakers

• 225 watts Peak Each, 75 watts RMS Each
• 1" Silk Dome tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 86 dB
• Mounting Depth: 2.04"

2+ offers available
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Free or discounted install kits when available.

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17
List price $65.99
-17% $54.99 /pair

In stock

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Available Offers (2) for NVX VSP4
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Dads & Grads Sale! Save 15% at Checkout!
List price $65.99
-17% $54.99
$46.74 with coupon | Price details
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2026-06-30 23:59:00
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Used from: $38.49
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JBL STAGE3 GEN2 48F (STAGE348F)

800W Peak (100W RMS) 4" Stage3 Gen2 Series 2-Way Coaxial 4-ohm Car Speakers

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JBL STAGE3 GEN2 48F (STAGE348F)

800W Peak (100W RMS) 4" Stage3 Gen2 Series 2-Way Coaxial 4-ohm Car Speakers

• 400 watts Peak Each, 50 watts RMS Each
• PEI (Polyetherimide) Balanced Dome Tweeters
• Plus One Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 89 dB

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Free or discounted install kits when available.

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List price $89.95
-22% $69.95 /pair
Add to Cart

• 400 watts Peak Each, 50 watts RMS Each
• PEI (Polyetherimide) Balanced Dome Tweeters
• Plus One Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 89 dB

Limited time!

Metra OS-BMW4V4

690W Peak (230W RMS) 4" OptiSound Series Direct Replacement Front Door 2-Way Component 4-ohm Speakers for

OS-BMW4V4 big Out of stock
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Metra OS-BMW4V4

690W Peak (230W RMS) 4" OptiSound Series Direct Replacement Front Door 2-Way Component 4-ohm Speakers for

• 345 watts Peak Each, 115 watts RMS Each
• 1" Silk Dome tweeters
• Impedance: 4 ohm
• Sensitivity: 90 dB
• Direct fit for

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List price $319.99
-10% $287.99
Add to Cart

• 345 watts Peak Each, 115 watts RMS Each
• 1" Silk Dome tweeters
• Impedance: 4 ohm
• Sensitivity: 90 dB
• Direct fit for

Alpine S2-S40 (Open Box, Great)

280W Peak (90W RMS) 4" Next Generation S-Series 2-way Coaxial 4-ohm Speakers

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Alpine S2-S40 (Open Box, Great)

280W Peak (90W RMS) 4" Next Generation S-Series 2-way Coaxial 4-ohm Speakers

• 140 watts Peak Each, 45 watts RMS Each
• 0.8" Cloth Soft Dome Tweeters with in-line crossovers
• Interlaced Carbon-Glass Fiber Composite - IMPP cone material
• Impedance: 4 ohm
• Sensitivity: 85 dB

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• 140 watts Peak Each, 45 watts RMS Each
• 0.8" Cloth Soft Dome Tweeters with in-line crossovers
• Interlaced Carbon-Glass Fiber Composite - IMPP cone material
• Impedance: 4 ohm
• Sensitivity: 85 dB

Limited time!

Kenwood KFC-C1056S

440W Peak (42W RMS) 4" 2-Way Dual Cone 4-ohm Car Speakers

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Kenwood KFC-C1056S

440W Peak (42W RMS) 4" 2-Way Dual Cone 4-ohm Car Speakers

• 220 watts Peak Each, 21 watts RMS Each
• Polypropylene cone material
• Smaller whizzer cone to extend its frequency response
• Impedance: 4 ohm
• Sensitivity: 88 dB

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Install kits available for most vehicles

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1
List price $70.00
Save 44%
-44% $39.00 /pair
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• 220 watts Peak Each, 21 watts RMS Each
• Polypropylene cone material
• Smaller whizzer cone to extend its frequency response
• Impedance: 4 ohm
• Sensitivity: 88 dB

American Bass SQ-4-FR

180W Peak (90W RMS) 4" SQ Series 2 Way Full Range Coaxial 4-ohm Speakers

SQ-4-FR big Out of stock
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American Bass SQ-4-FR

180W Peak (90W RMS) 4" SQ Series 2 Way Full Range Coaxial 4-ohm Speakers

• 90 watts Peak Each, 45 watts RMS Each
• Swivel 3/4" Neodymium Dome Tweeters
• Glass Carbon Fiber cone material
• Impedance: 4 ohm
• Sensitivity: 86 dB

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Free or discounted install kits when available.

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List price $68.84
-34% $45.23 /pair
Notify Me

• 90 watts Peak Each, 45 watts RMS Each
• Swivel 3/4" Neodymium Dome Tweeters
• Glass Carbon Fiber cone material
• Impedance: 4 ohm
• Sensitivity: 86 dB

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