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Soundstream SPM.804

1000W Peak (500W RMS) 8" Pro Audio Midrange 4-ohm Speakers

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1000W Peak (500W RMS) 8" Pro Audio Midrange 4-ohm Speakers

• 500 watts Peak Each, 250 watts RMS Each
• Paper cone material
• Impedance: 4 ohm
• Sensitivity: 95.5 dB

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List price $78.99
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-24% $59.99 /pair

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• 500 watts Peak Each, 250 watts RMS Each
• Paper cone material
• Impedance: 4 ohm
• Sensitivity: 95.5 dB

MB Quart PK1-113

220W Peak (110W RMS) 5.25" Premium Series 2-Way 4-ohm Coaxial Car Speakers

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220W Peak (110W RMS) 5.25" Premium Series 2-Way 4-ohm Coaxial Car Speakers

• 110 watts Peak Each, 55 watts RMS Each
• 1" Magnesium Dome tweeters
• Tunable waveguide tweeter housing
• Pop Paper-Mica Blend cone material
• Curvilinear cone design geometry
• Impedance: 4 ohm
• Sensitivity: 85.9 dB

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List price $169.99
-28% $121.87 /pair

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DS18 PRO-GM8.4 (Sold Individually)

580W Peak (190W RMS) 8" PRO-GM Series 4-Ohm Midrange Loudspeaker

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580W Peak (190W RMS) 8" PRO-GM Series 4-Ohm Midrange Loudspeaker

• 580 watts Peak Each, 190 watts RMS Each
• Paper cone material
• Impedance: 8 ohm
• Sensitivity: 94 dB

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$34.95

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DS18 PRO-FR8NEO

500W Peak (250W RMS) 8” PRO-FR Series 4-ohm Full-Range Bullet Loudspeaker

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500W Peak (250W RMS) 8” PRO-FR Series 4-ohm Full-Range Bullet Loudspeaker

• 500 watts Peak Each, 250 watts RMS Each
• Silver Neodymium Bullet tweeters
• Non-Pressed Paper cone material
• Impedance: 4 ohm
• Sensitivity: 99 dB

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$215.95

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Sundown Audio VEX-8 (VEX-88)

300W RMS 8" VEX Series Pro Audio Midrange 8-ohm Speaker (S-VEX84)

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300W RMS 8" VEX Series Pro Audio Midrange 8-ohm Speaker (S-VEX84)

• 300 watts RMS Each
• Carbon Fiber cone material
• Impedance: 8 ohm
• Sensitivity: 94.3 dB

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List price $275.99
-17% $229.99

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Soundstream SPM.804B

1000W Peak (500W RMS) 8" Pro Audio Midrange 4-ohm Speakers with Bullet Phase Plug

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1000W Peak (500W RMS) 8" Pro Audio Midrange 4-ohm Speakers with Bullet Phase Plug

• 500 watts Peak Each, 250 watts RMS Each
• Paper cone material
• Impedance: 4 ohm
• Sensitivity: 96 dB
• Includes bullet phase plug

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List price $67.99
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-26% $49.99 /pair

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Alpine BRV-S40

240W Peak (80W RMS) 4" BassRev Series 4-ohm 2-Way Coaxial Speaker Set

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240W Peak (80W RMS) 4" BassRev Series 4-ohm 2-Way Coaxial Speaker Set

• 120 watts Peak Each, 40 watts RMS Each
• 1" Polyester cloth Dome Tweeters
• Polypropylene-Mica cone material
• BassRev tuning via Alpine OPTIM8
• Impedance: 4 ohm
• Sensitivity: 84 dB

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List price $300.00
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-33% $199.95 /pair

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Deaf Bonce Machete MM-50L

320W Peak (196W RMS) 5.2" Machete Series Midrange 4-ohm Speakers

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320W Peak (196W RMS) 5.2" Machete Series Midrange 4-ohm Speakers

• 160 watts Peak Each, 98 watts RMS Each
• Paper cone material
• Impedance: 4 ohm
• Sensitivity: 91.6 dB

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$44.90 /pair

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Hertz CX 130

300W Peak (100W RMS) 5.25" Cento Series 2-Way Coaxial 4-ohm Car Speakers

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300W Peak (100W RMS) 5.25" Cento Series 2-Way Coaxial 4-ohm Car Speakers

• 150 watts Peak Each, 50 watts RMS Each
• 0.9" Tetolon Dome tweeters
• Semi-Pressed paper with Mica cone material
• Impedance: 4 ohm
• Sensitivity: 92.5 dB

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List price $260.00
$249.99 /pair

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Deaf Bonce HANNIBAL HM-8E-PLUS (HM-8E+)

340W Peak (170W RMS) 8" Hannibal Series Midrange 4-ohm Car Speakers

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340W Peak (170W RMS) 8" Hannibal Series Midrange 4-ohm Car Speakers

• 170 watts Peak Each, 85 watts RMS Each
• Pressed Paper cone material
• Impedance: 4 ohm
• Sensitivity: 95 dB

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$39.90 /pair

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Diamond Audio MSPRO8

500W RMS 8” MSPRO Series 4-ohm Pro Audio High Output Speakers for Harley-Davidson Motorcycles

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500W RMS 8” MSPRO Series 4-ohm Pro Audio High Output Speakers for Harley-Davidson Motorcycles

• Peak Each, 250 watts RMS Each
• Thermal Molded Waterproof Paper cone material
• Impedance: 4 ohm
• Sensitivity: 100 dB
• IP65 marine certified
• Designed for Harley-Davidson motorcycles

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List price $369.99
$359.99 /pair

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Hertz SV 200 NEO (SV200 NEO)

1000W Peak (400W RMS) 8" SPL Show Series 4-ohms Midrange Car and Motorcycle Speakers

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1000W Peak (400W RMS) 8" SPL Show Series 4-ohms Midrange Car and Motorcycle Speakers

• 500 watts Peak Each, 200 watts RMS Each
• Terminals and mounting holes compatible for Harley-Davidson motorbikes
• Water-repellent pressed paper cone material
• Impedance: 4 ohm
• Sensitivity: 100 dB

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List price $650.00
-15% $549.99 /pair

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DS18 PRO-GM8

580W Peak (190W RMS) 8" PRO-GM Series 8-ohm Midrange Car Loudspeaker

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580W Peak (190W RMS) 8" PRO-GM Series 8-ohm Midrange Car Loudspeaker

• 580 watts Peak Each, 190 watts RMS Each
• Paper cone material
• Impedance: 8 ohm
• Sensitivity: 93 dB

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List price $41.99
-17% $34.95

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Hifonics HCC525CX

160W Peak (80W RMS) 5.25" Colossus Classic Series 2 Way Coaxial 4-ohm Speakers

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160W Peak (80W RMS) 5.25" Colossus Classic Series 2 Way Coaxial 4-ohm Speakers

• 80 watts Peak Each, 40 watts RMS Each
• 1" Aluminum Dome Tweeters
• Woven Fiber cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

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$49.99 /pair

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Diamond Audio MS82NEO2

1200W Peak (600W RMS) 8" MS NEO Series 2-Way Pro Coaxial 2-ohm Powersports and Motorcycle Speakers

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1200W Peak (600W RMS) 8" MS NEO Series 2-Way Pro Coaxial 2-ohm Powersports and Motorcycle Speakers

• 600 watts Peak Each, 300 watts RMS Each
• Polyethylene-Naphthalate Horn Tweeters
• Waterproof DUPONT™ Kevlar cone material
• Impedance: 2 ohm
• Sensitivity: 96 dB

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$879.99 /pair

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Diamond Audio DES525

200W Peak (100W RMS) 5.25" Elite Series 2-way 4-ohm Coaxial Car Speakers

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200W Peak (100W RMS) 5.25" Elite Series 2-way 4-ohm Coaxial Car Speakers

• 100 watts Peak Each, 50 watts RMS Each
• 0.98" Aluminum Dome tweeters
• Composite Carbon Fiber cone material
• Impedance: 4 ohm
• Sensitivity: 85 dB

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$199.99 /pair

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Diamond Audio MS82NEO4

1200W Peak (600W RMS) 8" MS NEO Series 2-Way Pro Coaxial 4-ohm Powersports and Motorcycle Speakers

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1200W Peak (600W RMS) 8" MS NEO Series 2-Way Pro Coaxial 4-ohm Powersports and Motorcycle Speakers

• 600 watts Peak Each, 300 watts RMS Each
• Polyethylene-Naphthalate Horn Tweeters
• Waterproof DUPONT™ Kevlar cone material
• Impedance: 4 ohm
• Sensitivity: 97 dB

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$879.99 /pair

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JBL GT7-5C with Sound Damping

270W Peak (90W RMS) 5.25" GT7-Series 2-way 4-ohm Component Speaker System + NVX SDBSK2 Premium Sound Damping

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270W Peak (90W RMS) 5.25" GT7-Series 2-way 4-ohm Component Speaker System + NVX SDBSK2 Premium Sound Damping

• 135 watts Peak Each, 45 watts RMS Each
• 1-3/16" Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 92 dB

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List price $168.69
-20% $134.94

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• 135 watts Peak Each, 45 watts RMS Each
• 1-3/16" Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 92 dB

Sundown Audio VEX-12 S8 (Sold Individually)

500W RMS 12" VEX Series Pro-Audio Midrange 8-ohm Speaker (S-VEX128)

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500W RMS 12" VEX Series Pro-Audio Midrange 8-ohm Speaker (S-VEX128)

• 500 watts RMS Each
• Carbon Fiber cone material
• Impedance: 8 ohm

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List price $443.99
-17% $369.99

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Pioneer TS-A1081F (Open Box, Great)

460W Peak (100W RMS) 4” A Series 2-way 4-ohm Coaxial Car Speakers

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460W Peak (100W RMS) 4” A Series 2-way 4-ohm Coaxial Car Speakers

• 230 watts Peak Each, 50 watts RMS Each
• 1" PEI (Polyetherimide) Hard Dome tweeters
• Carbon and Mica Reinforced Injection Molded Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 90 dB

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List price $110.00
-27% $80.00 /pair

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    FAQ for Speakers in 2007 328xi

    Q: Can I upgrade or change the Speakers in 2007 BMW 328xi?

    A: Yes this page includes all the best Speakers that work in your 328xi.

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

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    Whether you're replacing a factory stereo or upgrading your entire audio system, the Fit Finder eliminates uncertainty.