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2004 Volvo S40

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Universal gear includes car amplifiers, subs, and other products that do not install in a specific location or require fitment to integrate with a vehicle.

Overview Upgrade your Speakers Add a Subwoofer Add an Amplifier Digital Sound Processors Audio Installation & Accessories Add a Backup Camera Dads & Grads Sale

Universal-Fit Audio for 2004 Volvo S40

When thinking of universal gear, we consider products like a car amp that gives more power to your speakers or subs, cell phone chargers, equalizers and sound processors, rear-seat entertainment and video monitors, as well as dash cameras.

Better sound with your factory radio

Better sound with a factory radio

Love your factory look or can't replace the stereo? We got you covered.

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Price Range
Priced Per
Car Speakers are typically sold in pairs so you will receive 2 speakers for each speaker purchase on speakers marked "Priced Per Pair". If a speaker is marked "Priced Per Each" then the speaker is sold individually and each purchase you make will result in 1 speaker. High-powered tweeters, midrange and full-range pro audio for car speakers are typically sold per each speaker.
Amplified or Non-Amplified
This indicates if the subwoofer comes with an amplifier installed as one unit or Non-amplified which requires an external amp to power the subwoofer
Marine Certified
Marine certified means that the unit has been designed and manufactured with a marine use in mind. It will withstand the harsh conditions that come from marine use. Generally, they are treated against UV rays and treated with special protective coatings.
Amp Bluetooth Connectivity
This feature will tell you if the amplifier has the capability to connect to a Bluetooth device.
Mount Style
Total RMS Power Output
Total RMS power is measured by multiplying RMS power per channel by the number of channels, and is calculated at the lowest level of operating impedance.

RMS power is the amount of continuous power, measured in watts, that an amplifier produces is called RMS power. The higher the RMS figure, the louder and cleaner your music sounds.

The RMS output figure is much more accurate than the peak rating when comparing products.
Total Peak Power Output
The total peak power output is measured as the wattage per channel multiplied by the number of channels, and is calculated at the lowest level of operating impedance.

It is measured during a brief musical burst, such as a sudden drum accent. Some manufacturers display peak power ratings on the face of their products to increase the appeal.

The RMS power rating is more accurate, and we recommend using it for product comparison.
Box Type
Represents the style of the enclosure. Be sure to purchase the appropriate enclosure type and internal volume that will be compatible with your subwoofer's recommendation.

Sealed - Sealed boxes are those that have no holes or vents in it. The only hole in a sealed box is where the subwoofer is installed. Smaller sealed boxes require more power than a larger sealed box. They provide a tight, accurate bass, while the larger sealed enclosures provide a "boomier" and louder bass.

Ported / Vented - Ported/Vented Enclosures provide an even boomier, louder bass, but less accurate then a small, sealed box. Ported enclosures typically require more airspace per sub and also less power output from an amplifier to perform correctly.

Bandpass - Bandpass enclosures make subwoofers perform efficiently, but loose. The bass is not as "boomy" as a ported enclosure nor as punchy as a sealed enclosure. Bandpass enclosures work well with lower to mid-level subwoofers.
Box Finish
The material used on the outside of the box. Most boxes are carpeted to prevent exterior scratches; however vinyl is popular as it can often be color-matched to a near exact look of your leather factory interior.
Illumination
This is the color of the illuminated LED lights on the unit.
Mounting Brackets
This will indicate whether the item is compatible with mounting brackets and whether they are included in the initial purchase. Mounting brackets are typically used in attaching the speaker to a tower, however some mounting brackets allow the speaker to be attached to the deck of the boat.
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Limited time!

Belva BH35BRB

160W Peak (80W RMS) 3.5-inch Motorcycle/Handlebar Bluetooth Stereo System with RGB Lights

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Belva BH35BRB

160W Peak (80W RMS) 3.5-inch Motorcycle/Handlebar Bluetooth Stereo System with RGB Lights

• 2-Way mini box system
• 3.5" long-excursion woofer
• Bluetooth Functions
• Built-in illuminating RBG lights

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List price $199.99
-60% $79.99

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• 2-Way mini box system
• 3.5" long-excursion woofer
• Bluetooth Functions
• Built-in illuminating RBG lights

Limited time!

Belva BASB27

27" 500W Weatherproof UTV/ATV/Powersports Bluetooth Soundbar with 8 Speakers and LED Lighting

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Belva BASB27

27" 500W Weatherproof UTV/ATV/Powersports Bluetooth Soundbar with 8 Speakers and LED Lighting

• Weatherproof IPX 5 soundbar
• 1" Pair of Horn Loaded Tweeters
• 3" Pairs of Full-Range Speakers
• Built-in Class-D Amplifier
• Adjustable Clamps fit bars from 1.75" to 2"

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List price $299.99
-45% $164.99

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Used from: $169.99

• Weatherproof IPX 5 soundbar
• 1" Pair of Horn Loaded Tweeters
• 3" Pairs of Full-Range Speakers
• Built-in Class-D Amplifier
• Adjustable Clamps fit bars from 1.75" to 2"

Limited time!

Belva BPS8RGB

600W Peak (300W RMS) Dual 8" Bluetooth ATV Powersports Amplified Sound System with LED Lights

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Belva BPS8RGB

600W Peak (300W RMS) Dual 8" Bluetooth ATV Powersports Amplified Sound System with LED Lights

• Peak Power: 600 watts
• Built-in D amplifier
• Weatherproof IPX-5 Rating
• (2) 8" 2-way Coaxial speakers
• (2) 1" Balanced Dome Titanium Tweeters
• AUX input for smartphones and MP3

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List price $329.99
-45% $179.99

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Used from: $125.99 Like New from: $152.99

• Peak Power: 600 watts
• Built-in D amplifier
• Weatherproof IPX-5 Rating
• (2) 8" 2-way Coaxial speakers
• (2) 1" Balanced Dome Titanium Tweeters
• AUX input for smartphones and MP3

Limited time!

JBL Cruise Black

40W Peak Loaded 2.5" Amplified Motorcycle and Powersport Handlebar Speaker Pods (Black)

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JBL Cruise Black

40W Peak Loaded 2.5" Amplified Motorcycle and Powersport Handlebar Speaker Pods (Black)

• Peak Power: 40 watts
• Built-in D amplifier
• Weatherproof IPX-5 Rating
• Dual 2-1/2 speakers enclosed in sealed pods
• Bluetooth support and audio playback
• USB 5V/1A charging for smartphones

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List price $299.95
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-27% $219.95

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• Peak Power: 40 watts
• Built-in D amplifier
• Weatherproof IPX-5 Rating
• Dual 2-1/2 speakers enclosed in sealed pods
• Bluetooth support and audio playback
• USB 5V/1A charging for smartphones

Limited time!

Belva BPS6RGB

400W Peak (200W RMS) Dual 6.5" Bluetooth ATV Powersports Amplified Sound System with LED Lights

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Belva BPS6RGB

400W Peak (200W RMS) Dual 6.5" Bluetooth ATV Powersports Amplified Sound System with LED Lights

• Peak Power: 400 watts
• Built-in D amplifier
• Weatherproof IPX-5 Rating
• (2) 6-1/2" 2-way Coaxial speakers
• (2) 1" Balanced Dome Titanium Tweeters
• AUX input for smartphones and MP3

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List price $269.99
-41% $159.99

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• Peak Power: 400 watts
• Built-in D amplifier
• Weatherproof IPX-5 Rating
• (2) 6-1/2" 2-way Coaxial speakers
• (2) 1" Balanced Dome Titanium Tweeters
• AUX input for smartphones and MP3

DS18 SB26BTXRGB

600W Peak (200W RMS) 26” 6-Speaker Marine Amplified Bluetooth Soundbar

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DS18 SB26BTXRGB

600W Peak (200W RMS) 26” 6-Speaker Marine Amplified Bluetooth Soundbar

• Peak Power: 600 watts
• Built-in D amplifier
• Weatherproof IPX-35 Rating
• (4) 3" Full-range speakers
• (2) 1" Soft Dome Tweeters
• USB playback and charging
• AUX input for smartphones and MP3
• Dimensions: 26" W x 3.98" H x 3.98" D

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List price $575.99
-17% $479.95

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• Peak Power: 600 watts
• Built-in D amplifier
• Weatherproof IPX-35 Rating
• (4) 3" Full-range speakers
• (2) 1" Soft Dome Tweeters
• USB playback and charging
• AUX input for smartphones and MP3
• Dimensions: 26" W x 3.98" H x 3.98" D

Limited time!

Belva BWT4LED

400W 4" Powersports/ATV/UTV Bluetooth Amplified Speaker Pods with Blue LED Lighting

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Belva BWT4LED

400W 4" Powersports/ATV/UTV Bluetooth Amplified Speaker Pods with Blue LED Lighting

• RMS: 200W (100W each)
• Built-in Bluetooth
• Blue Illumination Lighting
• Color: Black
• 1" Titanium Dome Tweeter
• Heavy Duty ABS

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List price $199.99
-65% $69.99

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Used from: $59.99 Like New from: $59.49

• RMS: 200W (100W each)
• Built-in Bluetooth
• Blue Illumination Lighting
• Color: Black
• 1" Titanium Dome Tweeter
• Heavy Duty ABS

Sound Extreme by ECOXGEAR SE28 (SEI-EXSE2801)

500W Peak 28” Elite Series 8-Speaker Amplified Bluetooth Soundbar with Integrated LED Controller

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Sound Extreme by ECOXGEAR SE28 (SEI-EXSE2801)

500W Peak 28” Elite Series 8-Speaker Amplified Bluetooth Soundbar with Integrated LED Controller

• Peak Power: 500 watts
• Built-in D amplifier
• Weatherproof IPX-66 rating enclosure
• (4) 2-1/4" Mid-range speakers
• (2) 1" tweeters
• (2) 4" side-mounted woofers
• AUX input for smartphones and MP3
• Dimensions: 28" W x 4.5" H x 4.5" D

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List price $489.99
-8% $449.99

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• Peak Power: 500 watts
• Built-in D amplifier
• Weatherproof IPX-66 rating enclosure
• (4) 2-1/4" Mid-range speakers
• (2) 1" tweeters
• (2) 4" side-mounted woofers
• AUX input for smartphones and MP3
• Dimensions: 28" W x 4.5" H x 4.5" D

Sound Extreme by ECOXGEAR ACC-EXPSLI12V

13.4 Ah Lithium-Ion Rechargeable Spare Battery Pack for SoundExtreme SEB Soundbars

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Sound Extreme by ECOXGEAR ACC-EXPSLI12V

13.4 Ah Lithium-Ion Rechargeable Spare Battery Pack for SoundExtreme SEB Soundbars

• 12V / 13.4Ah Lithium-Ion Rechargeable Battery Pack
• Spare battery for SoundExtreme SEB soundbars
• 20 hours of playback at moderate volume

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$99.99

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• 12V / 13.4Ah Lithium-Ion Rechargeable Battery Pack
• Spare battery for SoundExtreme SEB soundbars
• 20 hours of playback at moderate volume

Cerwin-Vega UTV65LED

600W Peak Dual 6.5" Bluetooth UTV Amplified Sound System with LED Lights

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Cerwin-Vega UTV65LED

600W Peak Dual 6.5" Bluetooth UTV Amplified Sound System with LED Lights

• Peak Power: 600 watts
• Built-in Class D amplifier
• Weatherproof IPX-6 Rating
• (2) 6-1/2" 2-way Coaxial speakers
• (2) Built-in 1" Bullet Tweeters
• AUX input for smartphones and MP3
• Built-in RGB LED lights

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$199.99

In stock.

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• Peak Power: 600 watts
• Built-in Class D amplifier
• Weatherproof IPX-6 Rating
• (2) 6-1/2" 2-way Coaxial speakers
• (2) Built-in 1" Bullet Tweeters
• AUX input for smartphones and MP3
• Built-in RGB LED lights

Cerwin-Vega UTV65

600W Peak Dual 6.5" Bluetooth UTV Amplified Sound System

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Cerwin-Vega UTV65

600W Peak Dual 6.5" Bluetooth UTV Amplified Sound System

• Peak Power: 600 watts
• Built-in Class D amplifier
• Weatherproof IPX-6 Rating
• (2) 6-1/2" 2-way Coaxial speakers
• (2) Built-in 1" Bullet Tweeters
• AUX input for smartphones and MP3

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$179.99

In stock.

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• Peak Power: 600 watts
• Built-in Class D amplifier
• Weatherproof IPX-6 Rating
• (2) 6-1/2" 2-way Coaxial speakers
• (2) Built-in 1" Bullet Tweeters
• AUX input for smartphones and MP3

Limited time!

Belva BPS8RGB (Open Box, Great)

600W Peak (300W RMS) Dual 8" Bluetooth ATV Powersports Amplified Sound System with LED Lights

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Belva BPS8RGB (Open Box, Great)

600W Peak (300W RMS) Dual 8" Bluetooth ATV Powersports Amplified Sound System with LED Lights

• Peak Power: 600 watts
• Built-in D amplifier
• Weatherproof IPX-5 Rating
• (2) 8" 2-way Coaxial speakers
• (2) 1" Balanced Dome Titanium Tweeters
• AUX input for smartphones and MP3

10% Off Open Box!
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1
List price $329.99
-62% $125.99
$113.39 with coupon | Price details

In stock

Only 3 Left!

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• Peak Power: 600 watts
• Built-in D amplifier
• Weatherproof IPX-5 Rating
• (2) 8" 2-way Coaxial speakers
• (2) 1" Balanced Dome Titanium Tweeters
• AUX input for smartphones and MP3

DS18 RYDERBT

2.5" Amplified Handlebar Mount Full Range Motorcycle Speaker Pods with Class D Amplifier & Bluetooth 5.0

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DS18 RYDERBT

2.5" Amplified Handlebar Mount Full Range Motorcycle Speaker Pods with Class D Amplifier & Bluetooth 5.0

• Peak Power: 60 watts each / RMS Power: 20 watts each
• Built-in D digital stereo amplifier
• Weatherproof IPX-5 rating
• (2) 2-1/2" Full-range speakers
• Bluetooth Version 5.0 wireless audio streaming
• USB playback and fast-charging

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$239.95

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• Peak Power: 60 watts each / RMS Power: 20 watts each
• Built-in D digital stereo amplifier
• Weatherproof IPX-5 rating
• (2) 2-1/2" Full-range speakers
• Bluetooth Version 5.0 wireless audio streaming
• USB playback and fast-charging

Boss BRT26A

500W Peak (250W RMS) 26" 6-Speaker Amplified Bluetooth Soundbar

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Boss BRT26A

500W Peak (250W RMS) 26" 6-Speaker Amplified Bluetooth Soundbar

• Peak Power: 500 watts
• Built-in A/B amplifier
• Weatherproof IPX-5 Rating
• (6) 3" 2-way Coaxial speakers
• (2) 1" Dome Tweeters
• USB playback and charging
• AUX input for smartphones and MP3
• Dimensions: 26.38" W x 4.76" H x 4.76" D

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List price $409.99
-51% $200.02

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• Peak Power: 500 watts
• Built-in A/B amplifier
• Weatherproof IPX-5 Rating
• (6) 3" 2-way Coaxial speakers
• (2) 1" Dome Tweeters
• USB playback and charging
• AUX input for smartphones and MP3
• Dimensions: 26.38" W x 4.76" H x 4.76" D

Boss BRT37SLR

500W Peak (250W RMS) 37" 8-Speaker Amplified Bluetooth Soundbar with LED

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Boss BRT37SLR

500W Peak (250W RMS) 37" 8-Speaker Amplified Bluetooth Soundbar with LED

• Peak Power: 500 watts
• Built-in A/B amplifier
• All-terrain system with IPX5 rating
• (8) 3" Full-range speakers
• (2) 1" Dome PEI (Polyetherimide) tweeters
• USB playback and charging
• AUX input for smartphones and MP3
• Dimensions: 3.7" W x 3.29" H x 37" D

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$484.99

In stock

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Used from: $339.49

• Peak Power: 500 watts
• Built-in A/B amplifier
• All-terrain system with IPX5 rating
• (8) 3" Full-range speakers
• (2) 1" Dome PEI (Polyetherimide) tweeters
• USB playback and charging
• AUX input for smartphones and MP3
• Dimensions: 3.7" W x 3.29" H x 37" D

MTX MUD6SPBT

200W Peak 21” 6-Speaker Amplified Bluetooth Powersports Soundbar

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MTX MUD6SPBT

200W Peak 21” 6-Speaker Amplified Bluetooth Powersports Soundbar

• Peak Power: 200 watts
• Built-in amplifier
• Weatherproof Rating
• (6) 3" Full-range speakers
• (2) 1" Tweeters
• USB playback and charging
• AUX input for smartphones and MP3
• Dimensions: 4-5/16" W x 3-7/16" H x D

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$499.95

In stock

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• Peak Power: 200 watts
• Built-in amplifier
• Weatherproof Rating
• (6) 3" Full-range speakers
• (2) 1" Tweeters
• USB playback and charging
• AUX input for smartphones and MP3
• Dimensions: 4-5/16" W x 3-7/16" H x D

Wet Sounds STEALTH XT 12-B

300W Peak 33.74" Stealth XT Series 12-Speaker Amplified Bluetooth Soundbar with Remote

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Wet Sounds STEALTH XT 12-B

300W Peak 33.74" Stealth XT Series 12-Speaker Amplified Bluetooth Soundbar with Remote

• Peak Power: 300 watts
• Built-in D amplifier
• Weatherproof IPX-7 rating enclosure
• (12) 3" Full-range speakers
• (4) 1" tweeters
• USB playback and charging
• AUX input for smartphones and MP3
• Dimensions: 33.74" W x 3.85" H x 4.04" D

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$999.99

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Only 1 Left!

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• Peak Power: 300 watts
• Built-in D amplifier
• Weatherproof IPX-7 rating enclosure
• (12) 3" Full-range speakers
• (4) 1" tweeters
• USB playback and charging
• AUX input for smartphones and MP3
• Dimensions: 33.74" W x 3.85" H x 4.04" D

Sound Extreme by ECOXGEAR SEDS33 (SEI-EXSE3301)

500W Peak 33" Elite Series 11-Speaker Amplified Bluetooth Soundbar with Integrated Remote

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Sound Extreme by ECOXGEAR SEDS33 (SEI-EXSE3301)

500W Peak 33" Elite Series 11-Speaker Amplified Bluetooth Soundbar with Integrated Remote

• Peak Power: 500 watts
• Built-in amplifier
• Weatherproof IPX-6 rating enclosure
• (6) 2-1/2" Mid-range speakers
• (3) 1-1/2" tweeters
• (2) 4" side-mounted woofers
• AUX input for smartphones and MP3
• Dimensions: 33.63" W x 4.75" H x 5" D

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$549.99

In stock

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• Peak Power: 500 watts
• Built-in amplifier
• Weatherproof IPX-6 rating enclosure
• (6) 2-1/2" Mid-range speakers
• (3) 1-1/2" tweeters
• (2) 4" side-mounted woofers
• AUX input for smartphones and MP3
• Dimensions: 33.63" W x 4.75" H x 5" D

Limited time!

JBL RALLYBAR

300W Peak (150W RMS) 21" 6-Speaker Amplified Bluetooth Soundbar with RGB LED and 2 Radiators

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JBL RALLYBAR

300W Peak (150W RMS) 21" 6-Speaker Amplified Bluetooth Soundbar with RGB LED and 2 Radiators

• Peak Power: 300 watts
• Built-in D amplifier
• Weatherproof IPX-66 Rating
• (4) 2.75" Full-range speakers
• (2) 1" Dome Tweeters
• 2 built-in racetrack passive radiators
• Built-in RGB LED lighting illumination
• USB playback and charging
• AUX input for smartphones and MP3
• Dimensions: 5" W x 4-5/8" H x 21-5/32" D

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Universal Icon Universal – fits most vehicles.

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• Peak Power: 300 watts
• Built-in D amplifier
• Weatherproof IPX-66 Rating
• (4) 2.75" Full-range speakers
• (2) 1" Dome Tweeters
• 2 built-in racetrack passive radiators
• Built-in RGB LED lighting illumination
• USB playback and charging
• AUX input for smartphones and MP3
• Dimensions: 5" W x 4-5/8" H x 21-5/32" D

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Belva BASB26 Version 2 (BASB26v2)

26" 500W Amplified 6-Speaker Weatherproof Powersports Bluetooth Soundbar Sound System for most UTV, ATV, SXS, and Golf Carts

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Belva BASB26 Version 2 (BASB26v2)

26" 500W Amplified 6-Speaker Weatherproof Powersports Bluetooth Soundbar Sound System for most UTV, ATV, SXS, and Golf Carts

• Compatible with 1.5", 1.75", and 2" roll cages and bars
• Four 3.5" full-range speakers and two 1" tweeters
• Built-in Bluetooth for Wireless Music Streaming
• USB port and 3.5mm AUX input (minijack)
• Remote control included

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Universal Icon Universal – fits most vehicles.

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-47% $189.99

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Used from: $145.99

• Compatible with 1.5", 1.75", and 2" roll cages and bars
• Four 3.5" full-range speakers and two 1" tweeters
• Built-in Bluetooth for Wireless Music Streaming
• USB port and 3.5mm AUX input (minijack)
• Remote control included

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    FAQ for Universal-Fit Audio & Electronics in 2004 S40

    Q: Can I upgrade or change the Universal-Fit Audio & Electronics in 2004 Volvo S40?

    A: Yes this page includes all the best Universal-Fit Audio & Electronics that work in your S40.

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    Modern vehicles often require specific brackets, wiring harnesses, and mounting solutions. A fit guide ensures:

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