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Products in these categories contain items that carry a guarantee to fit your BMW 330Ci (change vehicle)
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All Diamond Audio Car Speakers

Diamond Audio offers a complete range of all car speakers for every audio enthusiast.

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Diamond Audio Speaker Installation & Accessories

Install your car speakers seamlessly with Diamond Audio's reliable installation accessories.

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Diamond Audio Vehicle Specific Speaker Kits

Customize your car audio with Diamond Audio's custom car speaker kits for specific vehicles.

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Diamond Audio 6.5" Speakers

Immerse in rich, detailed sound with Diamond Audio's 6.5" speakers for an unparalleled audio experience.

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Diamond Audio 6.5" Component Speakers

Immerse yourself in sound with Diamond Audio's 6.5" component speakers, designed for audio perfection.

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Diamond Audio 6x9" Speakers

Feel the beat with Diamond Audio's 6x9" speakers, crafted for powerful, high-quality audio.

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Diamond Audio 6x9" Component Speakers

Diamond Audio's 6x9" component speakers bring concert-quality sound to your vehicle.

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Diamond Audio 4" Speakers

Experience rich, detailed audio with Diamond Audio's 4" speakers, perfect for any setup.

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Diamond Audio 5.25" Speakers

Diamond Audio's 5.25" speakers deliver superior sound quality for audiophiles.

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Diamond Audio 6" Speakers

Elevate your audio experience with the crisp sound of Diamond Audio's 6" speakers.

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Diamond Audio 6.75" Speakers

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Diamond Audio 8" Speakers

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Diamond Audio Midbass & Midrange Speakers

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Other Diamond Audio Car Speakers

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Diamond Audio Tweeters

Achieve crystal-clear highs with Diamond Audio's precision-engineered tweeters.

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Diamond Audio Pro Audio Tweeters

Experience professional audio quality with Diamond Audio's pro audio tweeters and compression drivers.

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Diamond Audio Pro Audio Midrange Drivers

For superior sound, choose Diamond Audio's pro and full-range drivers.

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Diamond Audio Speaker Packages & Bundles

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Diamond Audio Harley-Davidson Speakers

Experience superior sound on your Harley with Diamond Audio's specially designed speakers.

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Diamond Audio Marine Speakers

Enjoy high-quality audio on the water with Diamond Audio's marine speakers for boats.

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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.
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Diamond Audio MSPRO65 (2-Pairs, 4-Total)

MSPRO Series 6.5" Midrange Motorcycle Speakers 800W RMS (2-Pairs)

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Diamond Audio MSPRO65 (2-Pairs, 4-Total)

MSPRO Series 6.5" Midrange Motorcycle Speakers 800W RMS (2-Pairs)

• RMS: 400W / Peak: 800W
• Frequency Response: 110Hz - 10kHz
• Sensitivity: 97dB
• Manufactured to IP65 Marine Grade Compliant Specifications
• Shorting Ring Utilized In Motor Structure For Far-Field Performance

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$559.98

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• RMS: 400W / Peak: 800W
• Frequency Response: 110Hz - 10kHz
• Sensitivity: 97dB
• Manufactured to IP65 Marine Grade Compliant Specifications
• Shorting Ring Utilized In Motor Structure For Far-Field Performance

Diamond Audio MSPRO8 (2-Pairs, 4-Total)

2000W Peak (1000W RMS) 8” MSPRO Series 2-way Coaxial Speakers (2-Pairs)

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Diamond Audio MSPRO8 (2-Pairs, 4-Total)

2000W Peak (1000W RMS) 8” MSPRO Series 2-way Coaxial Speakers (2-Pairs)

• 500 watts Peak Each, 250 watts RMS Each
• Tweeters
• Thermal molded waterproof paper cone material
• Impedance: 4 ohm
• Sensitivity: 100 dB

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List price $739.98
$719.98

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• 500 watts Peak Each, 250 watts RMS Each
• Tweeters
• Thermal molded waterproof paper cone material
• Impedance: 4 ohm
• Sensitivity: 100 dB

Diamond Audio MP694 (2-Pairs, 4-Total)

1200W Peak (600W RMS) 6X9" Motorsport Series Pro Full-Range Compression Integrated Horn Speaker (2-Pairs)

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Diamond Audio MP694 (2-Pairs, 4-Total)

1200W Peak (600W RMS) 6X9" Motorsport Series Pro Full-Range Compression Integrated Horn Speaker (2-Pairs)

• 300 watts Max Each, 150 watts RMS Each
• 1" Horn Tweeters
• Impedance: N/A
• Sensitivity: 101 dB
• Mounting Depth: 3.99"

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$1,099.98

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• 300 watts Max Each, 150 watts RMS Each
• 1" Horn Tweeters
• Impedance: N/A
• Sensitivity: 101 dB
• Mounting Depth: 3.99"

Diamond Audio DES69C (2-Pairs, 4-Total)

600W Peak (300W RMS) 6x9" Elite Series 2-Way Component Speaker System (2-Pairs)

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Diamond Audio DES69C (2-Pairs, 4-Total)

600W Peak (300W RMS) 6x9" Elite Series 2-Way Component Speaker System (2-Pairs)

• 150 watts Peak Each, 75 watts RMS Each
• 1" Aluminum Dome Tweeters
• Composite foam core carbon fiber cone material
• Impedance: 4 ohm
• Sensitivity: 84 dB

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List price $1159.98
-28% $839.98

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• 150 watts Peak Each, 75 watts RMS Each
• 1" Aluminum Dome Tweeters
• Composite foam core carbon fiber cone material
• Impedance: 4 ohm
• Sensitivity: 84 dB

Diamond Audio DES652 (2-Pairs, 4-Total)

480W Peak (240W RMS) 6.5" Elite Series 2-Way Coaxial Car Speakers (2-Pairs)

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Diamond Audio DES652 (2-Pairs, 4-Total)

480W Peak (240W RMS) 6.5" Elite Series 2-Way Coaxial Car Speakers (2-Pairs)

• 120 watts Peak Each, 60 watts RMS Each
• 1" Aluminum Dome Tweeters
• Composite foam core carbon fiber cone material
• Impedance: 4 ohm
• Sensitivity: 87 dB

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• 120 watts Peak Each, 60 watts RMS Each
• 1" Aluminum Dome Tweeters
• Composite foam core carbon fiber cone material
• Impedance: 4 ohm
• Sensitivity: 87 dB

Diamond Audio MP84 (2-Pairs, 4-Total)

800W MAX (400W RMS) 8" PRO Full-Range Coaxial Horn Speakers (2-Pairs)

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Diamond Audio MP84 (2-Pairs, 4-Total)

800W MAX (400W RMS) 8" PRO Full-Range Coaxial Horn Speakers (2-Pairs)

• 200 watts Max Each, 100 watts RMS Each
• 1" Aluminum Horn Tweeters
• Heavy duty die-cast aluminum basket
• Advanced voice coil heat sink design for better heat dissipation
• Sensitivity: 103 dB
• Mounting Depth: 7.09"

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$1,099.98

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• 200 watts Max Each, 100 watts RMS Each
• 1" Aluminum Horn Tweeters
• Heavy duty die-cast aluminum basket
• Advanced voice coil heat sink design for better heat dissipation
• Sensitivity: 103 dB
• Mounting Depth: 7.09"

Diamond Audio HX653DI (2-Pairs, 4-Total)

600W Peak (300W RMS) 6.5" HEX Diamante Italia Series 3-Way Component Speaker System (2-Pairs)

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Diamond Audio HX653DI (2-Pairs, 4-Total)

600W Peak (300W RMS) 6.5" HEX Diamante Italia Series 3-Way Component Speaker System (2-Pairs)

• 150 watts Peak Each, 75 watts RMS Each
• 1" Silk Dome Tweeters
• Composite Bronze Fiberglass cone material
• Impedance: 3.3 ohm
• Sensitivity: 88.3 dB

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$2,639.98

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• 150 watts Peak Each, 75 watts RMS Each
• 1" Silk Dome Tweeters
• Composite Bronze Fiberglass cone material
• Impedance: 3.3 ohm
• Sensitivity: 88.3 dB

Diamond Audio DMD42 (2-Pairs, 4-Total)

240W Peak (120W RMS) 4" DMD Series 2-way Coaxial Car Speakers (2-Pairs)

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Diamond Audio DMD42 (2-Pairs, 4-Total)

240W Peak (120W RMS) 4" DMD Series 2-way Coaxial Car Speakers (2-Pairs)

• 60 watts Peak Each, 30 watts RMS Each
• 3/4" PEI (Polyetherimide) Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 84 dB

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-8% $219.98

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• 60 watts Peak Each, 30 watts RMS Each
• 3/4" PEI (Polyetherimide) Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 84 dB

Diamond Audio MSMB82NEO (2-Pairs, 4-Total)

1800W Peak (1400W RMS) 8" NEO Series 2-way 2-ohm Mid Bass Speaker (2-Pairs)

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Diamond Audio MSMB82NEO (2-Pairs, 4-Total)

1800W Peak (1400W RMS) 8" NEO Series 2-way 2-ohm Mid Bass Speaker (2-Pairs)

• 700 watts Peak Each, 350 watts RMS Each
• DUPONT™ Kevlar cone material
• Impedance: 2 ohm
• Sensitivity: 92 dB

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• 700 watts Peak Each, 350 watts RMS Each
• DUPONT™ Kevlar cone material
• Impedance: 2 ohm
• Sensitivity: 92 dB

Diamond Audio DES692 (2-Pairs, 4-Total)

600W Peak (300W RMS) 6x9" Elite Series 2-Way Coaxial Car Speakers (2-Pairs)

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Diamond Audio DES692 (2-Pairs, 4-Total)

600W Peak (300W RMS) 6x9" Elite Series 2-Way Coaxial Car Speakers (2-Pairs)

• 150 watts Peak Each, 75 watts RMS Each
• 1" Aluminum Dome Tweeters
• Composite foam core carbon fiber cone material
• Impedance: 4 ohm
• Sensitivity: 84 dB

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$519.98

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• 150 watts Peak Each, 75 watts RMS Each
• 1" Aluminum Dome Tweeters
• Composite foam core carbon fiber cone material
• Impedance: 4 ohm
• Sensitivity: 84 dB

Diamond Audio H65A (2-Pairs, 4-Total)

600W Peak (300W RMS) 6.5" HEX Series 2-Way Component Speaker System (2-Pairs)

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Diamond Audio H65A (2-Pairs, 4-Total)

600W Peak (300W RMS) 6.5" HEX Series 2-Way Component Speaker System (2-Pairs)

• 150 watts Peak Each, 75 watts RMS Each
• 1" Silk Dome Tweeters
• Anodized Aluminum cone material
• Impedance: 4 ohm
• Sensitivity: 88.3 dB

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$1,539.98

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• 150 watts Peak Each, 75 watts RMS Each
• 1" Silk Dome Tweeters
• Anodized Aluminum cone material
• Impedance: 4 ohm
• Sensitivity: 88.3 dB

Diamond Audio H65S (2-Pairs, 4-Total)

600W Peak (300W RMS) 6.5" HEX Series 2-Way Component Speaker System (2-Pairs)

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Diamond Audio H65S (2-Pairs, 4-Total)

600W Peak (300W RMS) 6.5" HEX Series 2-Way Component Speaker System (2-Pairs)

• 150 watts Peak Each, 75 watts RMS Each
• 1" Silk Dome Tweeters
• Anodized Aluminum cone material
• Impedance: 4 ohm
• Sensitivity: 88.3 dB

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$1,539.98

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• 150 watts Peak Each, 75 watts RMS Each
• 1" Silk Dome Tweeters
• Anodized Aluminum cone material
• Impedance: 4 ohm
• Sensitivity: 88.3 dB

Diamond Audio MS8NEO (2-Pairs, 4-Total)

2800W Peak 1400W 8″ MS Neo Series Midrange Coaxial Speakers (2-Pairs)

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Diamond Audio MS8NEO (2-Pairs, 4-Total)

2800W Peak 1400W 8″ MS Neo Series Midrange Coaxial Speakers (2-Pairs)

• 700 watts Max Each, 350 watts RMS Each
• Neodymium Cone Tweeters
• Waterproof Black DUPONT™ Kevlar Cone
• Impedance: 4 ohm
• Sensitivity: 96 dB
• Mounting Depth: 3.15"

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$1,599.98

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• 700 watts Max Each, 350 watts RMS Each
• Neodymium Cone Tweeters
• Waterproof Black DUPONT™ Kevlar Cone
• Impedance: 4 ohm
• Sensitivity: 96 dB
• Mounting Depth: 3.15"

Diamond Audio H65SH (2-Pairs, 4-Total)

600W Peak (300W RMS) 6.5" HEX 2-Way Shallow Component Speakers (2-Pairs)

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Diamond Audio H65SH (2-Pairs, 4-Total)

600W Peak (300W RMS) 6.5" HEX 2-Way Shallow Component Speakers (2-Pairs)

• 150 watts Max Each, 75 watts RMS Each
• 2" Neodymium tweeters available in silk or aluminum
• Hard anodized black aluminum cone
• Impedance: 4 ohm
• Sensitivity: 89 dB
• Mounting Depth: 1.3"

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$1,499.98

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• 150 watts Max Each, 75 watts RMS Each
• 2" Neodymium tweeters available in silk or aluminum
• Hard anodized black aluminum cone
• Impedance: 4 ohm
• Sensitivity: 89 dB
• Mounting Depth: 1.3"

Diamond Audio DMDTAK

160W Peak (80W RMS) 3/4" DMD Series Silk Done Tweeter Add-On Kit with Crossover Networks

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Diamond Audio DMDTAK

160W Peak (80W RMS) 3/4" DMD Series Silk Done Tweeter Add-On Kit with Crossover Networks

• 3/4" Dome Silk DomeTweeters
• External 12dB/octave crossovers
• 80 watts Peak Each
• 40 watts RMS Each
• 4 ohm Impedance

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List price $89.99
$87.99 /pair

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• 3/4" Dome Silk DomeTweeters
• External 12dB/octave crossovers
• 80 watts Peak Each
• 40 watts RMS Each
• 4 ohm Impedance

Diamond Audio VSP1SMB

300W Peak (150W RMS) 1" VSP Series 4-ohm Car Tweeters

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Diamond Audio VSP1SMB

300W Peak (150W RMS) 1" VSP Series 4-ohm Car Tweeters

• 1" VSP Series Cone Tweeters
• 150 watts Peak Each
• 75 watts RMS Each
• 4 ohm Impedance

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$189.99 /pair

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• 1" VSP Series Cone Tweeters
• 150 watts Peak Each
• 75 watts RMS Each
• 4 ohm Impedance

Diamond Audio HXM525

600W Peak (120W RMS) 5.25" MotorSport Series 2-Way Coaxial 4-ohm Marine and Powersports Speakers with RGB LED Light

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Diamond Audio HXM525

600W Peak (120W RMS) 5.25" MotorSport Series 2-Way Coaxial 4-ohm Marine and Powersports Speakers with RGB LED Light

• 300 watts Peak Each, 60 watts RMS Each
• 1" Titanium Dome tweeters
• Kevlar Fiber cone material
• Impedance: 4 ohm
• Sensitivity: 89 dB
• Mounting Depth: 2.18"

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$399.99 /pair

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Diamond Audio HXM65

800W Peak (160W RMS) 6.5" MotorSport Series 2-Way Coaxial 4-ohm Marine and Powersports Speakers with RGB Light

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Diamond Audio HXM65

800W Peak (160W RMS) 6.5" MotorSport Series 2-Way Coaxial 4-ohm Marine and Powersports Speakers with RGB Light

• 400 watts Peak Each, 80 watts RMS Each
• 1" Titanium Dome tweeters
• Kevlar Fiber cone material
• Impedance: 4 ohm
• Sensitivity: 89 dB
• Mounting Depth: 2.18"

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$399.99 /pair

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Diamond Audio M01SWT

200W Peak (100W RMS) 1" MotorSport Series 4-ohm Pro Audio Swivel Tweeters

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Diamond Audio M01SWT

200W Peak (100W RMS) 1" MotorSport Series 4-ohm Pro Audio Swivel Tweeters

• 1" Pro-Audio Swivel Tweeters
• 100 watts Peak Each
• 50 watts RMS Each
• 4 ohm Impedance

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$239.99

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• 1" Pro-Audio Swivel Tweeters
• 100 watts Peak Each
• 50 watts RMS Each
• 4 ohm Impedance

Diamond Audio M1SRT

200W Peak (100W RMS) 1" MotorSport Series 4-ohm Pro Audio Short Horn Tweeters

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Diamond Audio M1SRT

200W Peak (100W RMS) 1" MotorSport Series 4-ohm Pro Audio Short Horn Tweeters

• 1" Pro-Audio Short Horn Tweeters
• 100 watts Peak Each
• 50 watts RMS Each
• 4 ohm Impedance

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$219.99

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• 1" Pro-Audio Short Horn Tweeters
• 100 watts Peak Each
• 50 watts RMS Each
• 4 ohm Impedance

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    2012 Harley Davidson FLHTC Electra Glide Classic

    2000 Harley Davidson FLTR Road Glide

    2007 Harley Davidson FXD Dyna Super Glide

    2002 Harley Davidson FLHTC/I Electra Glide Classic

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    Shop your 2004 330Ci
    Why Use a Vehicle Fit Guide?
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    Modern vehicles often require specific brackets, wiring harnesses, and mounting solutions. A fit guide ensures:

    • You see only parts engineered for your exact vehicle
    • You avoid incompatible radios, speakers, or wiring
    • Installation is smoother, faster, and frustration-free
    • You get the correct accessories the first time

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

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