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Infinity Primus 603CF (PR603CF) (2-Pairs, 4-Total)

720W Peak (240W RMS) 6.5" Primus Series 2-Way Component Speakers (2-Pairs)

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720W Peak (240W RMS) 6.5" Primus Series 2-Way Component Speakers (2-Pairs)

• 180 watts Peak Each, 60 watts RMS Each
• 3/4" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 93 dB

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No Fit Icon Doesn't fit your Sierra 2500 HD

1
List price $319.90
-19% $259.90

In stock

• 180 watts Peak Each, 60 watts RMS Each
• 3/4" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 93 dB

Infinity Reference 5032cfx (REF-5032cfx) (2-Pairs, 4-Total)

540W Max (180W RMS) 5.25" Reference 2-Way Coaxial Car Speakers (2-Pairs)

REF5032CFXAM_2 big
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540W Max (180W RMS) 5.25" Reference 2-Way Coaxial Car Speakers (2-Pairs)

• 135 Watts Max Each, 45 Watts RMS Each
• Edge-Driven Textile Tweeter
• Plus One Polypropylene Oversized Cone
• 3 ohm Impedance
• Sensitivity: 92dB
• Mounting Depth: 1-15/16"

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No Fit Icon Doesn't fit your Sierra 2500 HD

List price $260.00
-42% $149.98

In stock

• 135 Watts Max Each, 45 Watts RMS Each
• Edge-Driven Textile Tweeter
• Plus One Polypropylene Oversized Cone
• 3 ohm Impedance
• Sensitivity: 92dB
• Mounting Depth: 1-15/16"

Infinity PR9693M (2-Pairs, 4-Total)

720W Peak (240W RMS) 6x9” Coaxial Car Speakers (2-Pairs)

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720W Peak (240W RMS) 6x9” Coaxial Car Speakers (2-Pairs)

• 180 watts Peak Each, 60 watts RMS Each
• 3/4" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 93 dB

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No Fit Icon Doesn't fit your Sierra 2500 HD

1
List price $359.90
-17% $299.92

In stock

Only 3 Left!

• 180 watts Peak Each, 60 watts RMS Each
• 3/4" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 93 dB

Lowest price in 30 days

Infinity Kappa 63XF (2-Pairs, 4-Total)

1020W Peak (340W RMS) 6.5" Kappa Series 2-Way Coaxial Speakers with Silk Dome Tweeters (2-Pairs)

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1020W Peak (340W RMS) 6.5" Kappa Series 2-Way Coaxial Speakers with Silk Dome Tweeters (2-Pairs)

• 255 watts Peak Each, 85 watts RMS Each
• Silk Dome Tweeters
• Glass Fiber cone material
• Impedance: 3 ohm
• Sensitivity: 93 dB

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No Fit Icon Doesn't fit your Sierra 2500 HD

10
List price $599.90
-33% $399.90

In stock

Only 1 Left!

• 255 watts Peak Each, 85 watts RMS Each
• Silk Dome Tweeters
• Glass Fiber cone material
• Impedance: 3 ohm
• Sensitivity: 93 dB

Lowest price in 30 days

Infinity Kappa 603CF (2-Pairs, 4-Total)

1320W Peak (440W EMS) 6.5" Kappa Series 2-way Component Speaker System (2-Pairs)

KAPPA603CF_2 big
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1320W Peak (440W EMS) 6.5" Kappa Series 2-way Component Speaker System (2-Pairs)

• 330 watts Peak Each, 110 watts RMS Each
• 3/4" Silk Edge-driven Dom Tweeters
• Glass Fiber cone material
• Impedance: 3 ohm
• Sensitivity: 93 dB

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No Fit Icon Doesn't fit your Sierra 2500 HD

6
List price $999.90
-28% $719.90

In stock

Only 3 Left!

• 330 watts Peak Each, 110 watts RMS Each
• 3/4" Silk Edge-driven Dom Tweeters
• Glass Fiber cone material
• Impedance: 3 ohm
• Sensitivity: 93 dB

Infinity REF507CF (2-Pairs, 4-Total)

780W Peak (260W RMS) 5.25" Reference Series 2-way 4-ohm Component Speaker System (2-Pairs)

REF507CF_2 big
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780W Peak (260W RMS) 5.25" Reference Series 2-way 4-ohm Component Speaker System (2-Pairs)

• 195 watts Peak Each, 65 watts RMS Each
• 3/4" Textile Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 93 dB

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No Fit Icon Doesn't fit your Sierra 2500 HD

List price $499.90
-12% $439.90

In stock

• 195 watts Peak Each, 65 watts RMS Each
• 3/4" Textile Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 93 dB

Infinity Primus 503CF (PR503CF) (2-Pairs, 4-Total)

600W Peak (200W RMS) 5.25” Primus Series 2-Way Component Speaker System (2-Pairs)

PR503CF_2 big
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600W Peak (200W RMS) 5.25” Primus Series 2-Way Component Speaker System (2-Pairs)

• 150 watts Peak Each, 50 watts RMS Each
• 3/4" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 91 dB

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No Fit Icon Doesn't fit your Sierra 2500 HD

1
List price $299.90
-20% $239.90

In stock

Only 2 Left!

• 150 watts Peak Each, 50 watts RMS Each
• 3/4" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 91 dB

Lowest price in 30 days

Infinity Kappa 693M (INFSPKKA693MAM) (2-Pairs, 4-Total)

1440W Peak (480W RMS) Kappa Series 6x9” 3-Way Speakers (2-Pairs)

KAPPA693M_2 big
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1440W Peak (480W RMS) Kappa Series 6x9” 3-Way Speakers (2-Pairs)

• 360 watts Peak Each, 120 watts RMS Each
• Silk Dome Tweeters
• Glass Fiber cone material
• Impedance: 3 ohm
• Sensitivity: 94 dB

Save 15% Off Package Deals at Checkout!
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No Fit Icon Doesn't fit your Sierra 2500 HD

6
List price $699.90
-31% $479.90

In stock

• 360 watts Peak Each, 120 watts RMS Each
• Silk Dome Tweeters
• Glass Fiber cone material
• Impedance: 3 ohm
• Sensitivity: 94 dB

Infinity Primus 603F (PR603F) (2-Pairs, 4-Total)

600W Peak (200W RMS) 6.5” Primus Series 2-Way Coaxial Speakers (2-Pairs)

PR603F_2 big
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600W Peak (200W RMS) 6.5” Primus Series 2-Way Coaxial Speakers (2-Pairs)

• 150 watts Peak Each, 50 watts RMS Each
• 1/2" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 92 dB

Save 15% Off Package Deals at Checkout!
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No Fit Icon Doesn't fit your Sierra 2500 HD

7
List price $219.90
-27% $159.90

In stock

• 150 watts Peak Each, 50 watts RMS Each
• 1/2" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 92 dB

Lowest price in 30 days

Infinity Kappa 683XF (2-Pairs, 4-Total)

1200W Peak (400W RMS) 6x8" Kappa Series 2-Way Car Speakers with UniPivot Angled Tweeter (2-Pairs)

KAPPA683XF_2 big
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1200W Peak (400W RMS) 6x8" Kappa Series 2-Way Car Speakers with UniPivot Angled Tweeter (2-Pairs)

• 300 watts Peak Each, 100 watts RMS Each
• 3/4" High-resolution Silk Dome Tweeters
• Glass Fiber cone material
• Impedance: 3 ohm
• Sensitivity: 93 dB

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No Fit Icon Doesn't fit your Sierra 2500 HD

3
List price $659.90
-32% $447.90

In stock

Only 1 Left!

• 300 watts Peak Each, 100 watts RMS Each
• 3/4" High-resolution Silk Dome Tweeters
• Glass Fiber cone material
• Impedance: 3 ohm
• Sensitivity: 93 dB

Lowest price in 30 days

Infinity Kappa 303S (2-Pairs, 4-Total)

660W Peak (220W RMS) 3” Kappa Series 2-way Component Car Speakers (2-Pairs)

KAPPA303S_2 big
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660W Peak (220W RMS) 3” Kappa Series 2-way Component Car Speakers (2-Pairs)

• 165 watts Peak Each, 55 watts RMS Each
• 3" Silk Dome Tweeters
• cone material
• Impedance: 3 ohm
• Sensitivity: 93 dB

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No Fit Icon Doesn't fit your Sierra 2500 HD

2
List price $499.90
-36% $319.90

In stock

• 165 watts Peak Each, 55 watts RMS Each
• 3" Silk Dome Tweeters
• cone material
• Impedance: 3 ohm
• Sensitivity: 93 dB

Lowest price in 30 days

Infinity KAPPA 693C (2-Pairs, 4-Total)

870W Peak (290W RMS) Kappa Series 6x9” Component Speaker System (2-Pairs)

KAPPA693CF_2 big
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870W Peak (290W RMS) Kappa Series 6x9” Component Speaker System (2-Pairs)

• 435 watts Peak Each, 145 watts RMS Each
• 3/4" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 91 dB

Save 15% Off Package Deals at Checkout!
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No Fit Icon Doesn't fit your Sierra 2500 HD

List price $1099.90
-27% $799.90

In stock

Only 1 Left!

• 435 watts Peak Each, 145 watts RMS Each
• 3/4" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 91 dB

Lowest price in 30 days

Infinity Kappa 53XF (INFSPKKA53XFAM) (2-Pairs, 4-Total)

720W Peak (240W RMS) 5.25" Kappa Series 2-Way Coaxial Car Speakers (2-Pairs)

KAPPA53XF_2 big
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720W Peak (240W RMS) 5.25" Kappa Series 2-Way Coaxial Car Speakers (2-Pairs)

• 180 watts Peak Each, 60 watts RMS Each
• 1" Silk Tweeters
• Glass Fiber cone material
• Impedance: 3 ohm
• Sensitivity: 93 dB

Save 15% Off Package Deals at Checkout!
shipping truck icon Free shipping in USA. Provide zip for delivery date.

No Fit Icon Doesn't fit your Sierra 2500 HD

List price $499.90
-36% $319.90

In stock

Only 2 Left!

• 180 watts Peak Each, 60 watts RMS Each
• 1" Silk Tweeters
• Glass Fiber cone material
• Impedance: 3 ohm
• Sensitivity: 93 dB

Infinity Reference REF-5030cx (2-Pairs, 4-Total)

780W Peak (260W RMS) Reference Series 5.25” Component Speaker System (2-Pairs)

REF5030CXAM_2 big
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780W Peak (260W RMS) Reference Series 5.25” Component Speaker System (2-Pairs)

• 195 watts Peak Each, 65 watts RMS Each
• 3/4" Textile Dome Tweeters
• Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 93 dB

shipping truck icon Free shipping in USA. Provide zip for delivery date.

No Fit Icon Doesn't fit your Sierra 2500 HD

1
List price $499.90
-56% $219.90

In stock

• 195 watts Peak Each, 65 watts RMS Each
• 3/4" Textile Dome Tweeters
• Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 93 dB

Infinity Primus 503F (2-Pairs, 4-Total)

960W Peak (320W RMS) Primus Series 5.25” 2-Way Coaxial Car Speakers (2-Pairs)

PR503F_2 big
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960W Peak (320W RMS) Primus Series 5.25” 2-Way Coaxial Car Speakers (2-Pairs)

• 120 watts Peak Each, 40 watts RMS Each
• 3/4" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 91 dB

Save 15% Off Package Deals at Checkout!
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No Fit Icon Doesn't fit your Sierra 2500 HD

List price $199.90
-30% $139.90

In stock

Only 1 Left!

• 120 watts Peak Each, 40 watts RMS Each
• 3/4" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 91 dB

Infinity REF407F (2-Pairs, 4-Total)

420W Peak (140W RMS) 4" Reference Series 2-way 3-ohm Coaxial Speakers (2-Pairs)

REF407F_2 big
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420W Peak (140W RMS) 4" Reference Series 2-way 3-ohm Coaxial Speakers (2-Pairs)

• 105 watts Peak Each, 35 watts RMS Each
• 1/2" Textile Balanced Dome Tweeters
• Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 92 dB

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Fits select locations in your Sierra 2500 HD.
Add vehicle details to confirm exact location.
List price $279.90
-21% $219.90

In stock

• 105 watts Peak Each, 35 watts RMS Each
• 1/2" Textile Balanced Dome Tweeters
• Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 92 dB

Infinity REF507F (2-Pairs, 4-Total)

540W Peak (180W RMS) 5.25" Reference Series 2-way 3-ohm Speakers (2-Pairs)

REF507F_2 big
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540W Peak (180W RMS) 5.25" Reference Series 2-way 3-ohm Speakers (2-Pairs)

• 135 watts Peak Each, 45 watts RMS Each
• 1/2" Textile Balanced Dome Tweeters
• Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 92 dB

Save 15% Off Package Deals at Checkout!
shipping truck icon Free shipping in USA. Provide zip for delivery date.

No Fit Icon Doesn't fit your Sierra 2500 HD

1
List price $279.90
-21% $219.90

In stock

Only 3 Left!

• 135 watts Peak Each, 45 watts RMS Each
• 1/2" Textile Balanced Dome Tweeters
• Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 92 dB

Infinity REF697F (2-Pairs, 4-Total)

1200W Peak (400W RMS) 6x9" Reference Series 2-way 4-ohm Speakers (2-Pairs)

REF697F_2 big
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1200W Peak (400W RMS) 6x9" Reference Series 2-way 4-ohm Speakers (2-Pairs)

• 300 watts Peak Each, 100 watts RMS Each
• 1" Textile Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 94 dB

Save 15% Off Package Deals at Checkout!
shipping truck icon Free shipping in USA. Provide zip for delivery date.

No Fit Icon Doesn't fit your Sierra 2500 HD

5
List price $339.90
-18% $279.90

In stock

• 300 watts Peak Each, 100 watts RMS Each
• 1" Textile Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 94 dB

Infinity Kappa 503CF (2-Pairs, 4-Total)

960W Peak (320W RMS) 5.25” Kappa Series 2-way Component Speakers System (2-Pairs)

KAPPA503CF_2 big
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960W Peak (320W RMS) 5.25” Kappa Series 2-way Component Speakers System (2-Pairs)

• 240 watts Peak Each, 80 watts RMS Each
• 3/4" Silk Edge-Driven Dome Tweeters
• Glass Fiber cone material
• Impedance: 3 ohm
• Sensitivity: 93 dB

Save 15% Off Package Deals at Checkout!
shipping truck icon Free shipping in USA. Provide zip for delivery date.

No Fit Icon Doesn't fit your Sierra 2500 HD

1
List price $899.90
-38% $559.98

In stock

Only 2 Left!

• 240 watts Peak Each, 80 watts RMS Each
• 3/4" Silk Edge-Driven Dome Tweeters
• Glass Fiber cone material
• Impedance: 3 ohm
• Sensitivity: 93 dB

Infinity Primus PR5012IS (PR5012ISAM) (2-Pairs, 4-Total)

480W Peak (160W RMS) 5.25" Primus Series 2-Way Coaxial Car Speakers (2-Pairs)

PR5012ISAM_2 big
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480W Peak (160W RMS) 5.25" Primus Series 2-Way Coaxial Car Speakers (2-Pairs)

• 120 watts Peak Each, 40 watts RMS Each
• Textile Edge-driven Dome Tweeters
• Polypropylene cone material
• Impedance: 2.7
• Sensitivity: 88 dB

shipping truck icon Free shipping in USA. Provide zip for delivery date.

No Fit Icon Doesn't fit your Sierra 2500 HD

List price $239.90
-54% $109.90

In stock

• 120 watts Peak Each, 40 watts RMS Each
• Textile Edge-driven Dome Tweeters
• Polypropylene cone material
• Impedance: 2.7
• Sensitivity: 88 dB

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    All About

    Infinity Car Speakers
    Infinity car speakers are engineered from the ground up to deliver rich, full sound in the challenging environment of a car. Infinity has a high quality option in a wide variety of sizes, making it easy to find Infinity car speakers that fit your car. Infinity speakers, like the Kappa and Reference series, are available in component systems as well as coaxial speakers, enabling them to work well in virtually any environment.

    The Infinity Kappa series are a sure bet to impress even the most discerning audiophiles with crisply defined treble and bold, powerful sound. The Kappa speakers deliver fantastic sound quality and beautiful highs thanks to their high quality materials and construction, over sized cones and edge driven dome tweeters.

    Other options available from Infinity include the Reference and Reference X series speakers. The Reference speakers are a mix of classic coaxial speakers and component systems with multiple mounting options for your convenience. The Plus One cone design provides incredibly smooth mid-range sounds for each speaker while the edge driven textile dome tweeters produce crystal clear highs. The Reference X speakers were designed with a vented motor assembly to reduce heat buildup to allow the speakers to maintain a higher output level for a longer period of time.

    Infinity car speakers take advantage of the tremendous Infinity engineering for outstanding power handling, sound quality and speaker life. From 5" x 7" and 6" x 9" to 5.25" to 6.5" speaker configurations, we have every Infinity speaker to help you create the best sound system around at Sonic Electronix.
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    We love people and we're ready to help you! See what separates us from our competition.

    Take advantage of our VIP rewards like 10% back on your purchases, free 2-day shipping, extended warranties, and free returns! Gain access to all of these rewards without any membership fees.
    Get great discounted (and possibly FREE) installation accessories with most car stereo purchases. This includes dash kits, wiring harnesses and antenna adapters that you will need to properly install your new car stereo.
    We are an Authorized Dealer for all the brands we sell, including the most premium brands in car and marine audio such as Hertz, JL Audio, NVX, Rockford Fosgate, Kicker, Alpine, Kenwood and many more.
    Shop Deals and get up to 30% off premium brands! Shop Now! We are always looking out for the best products and deals to offer our customers. Don’t pay too much by shopping elsewhere!
    We have information on brands, gear, and more for you to explore! Check out our YouTube Channel for helpful how-to videos, product reviews, and Q&As. For a more detailed look, also visit our Learning Center!
    Our trained experts are here to assist you! They are just a phone call or click away to help you get the right gear for you and your vehicle!
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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
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    Whether you're replacing a factory stereo or upgrading your entire audio system, the Fit Finder eliminates uncertainty.