Garage
Shop
Account Icon
Account
Box Icon
Track
order
Telephone Icon
Call
Help Icon
Help
Door with Arrow Icon
Sign In
  1. Home
  2. Infinity Store
  3. Infinity Car Audio & Electronics
  4. Infinity Car Speakers
  5. Infinity Car Speaker Packages & Bundles

Infinity Car Speaker Packages & Bundles for your 1981 528i close

Upgrade your audio with Infinity Car Speaker Packages & Bundles.

Exclamation Icon It’s a no-brainer.
 Get your speakers here.

Install kit discounts · Guaranteed fit · Full warranty
Filters
Infinity ✕
Show products that do not fit ✕
Clear Filters
Reset Done
Show products that do not fit
Product Type
Price Range
Speaker Location
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.
Deals
Promotions we have offer More Ways to Shop for items that are on clearance, last chance, special offer and sales, Made in America, and more!
Availability

Your Vehicle

close
Checkmark Icon
1981 528i
Speakers guaranteed to fit your vehicle.
Update vehicle | Remove vehicle | Vehicle store

Shop the Category

filter-icon Filters & Sort

Infinity REF507F (2-Pairs, 4-Total)

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

REF507F_2 big
Go to item page Right Arrow Icon of Right Arrow

Infinity REF507F (2-Pairs, 4-Total)

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 528i

1
List price $279.90
-21% $219.90

In stock

Only 3 Left!

Add to Cart

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

Infinity REF467F (2-Pairs, 4-Total)

540W Peak (180W RMS) 4x6" Reference Series 2-way 3-ohm Speakers (2-Pairs)

REF467F_2 big
Go to item page Right Arrow Icon of Right Arrow

Infinity REF467F (2-Pairs, 4-Total)

540W Peak (180W RMS) 4x6" 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.
found car based on your search
Fits your 528i
List price $279.90
-21% $219.90

In stock

Add to Cart

• 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
Go to item page Right Arrow Icon of Right Arrow

Infinity REF697F (2-Pairs, 4-Total)

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 528i

5
List price $339.90
-18% $279.90

In stock

Add to Cart

• 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
Go to item page Right Arrow Icon of Right Arrow

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

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 528i

1
List price $899.90
-38% $559.98

In stock

Only 1 Left!

Add to Cart

• 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 603F (INFSPKPR603C) with PR9693M (INFSPKPR693M)

300W Peak (100W RMS) 6.5” Primus Series 2-way 3-ohm + 360W Peak (120W RMS) 6x9” 3-way 3-ohm Coaxial Car Speakers

PR603F_PR9693M big
Go to item page Right Arrow Icon of Right Arrow

Infinity Primus 603F (INFSPKPR603C) with PR9693M (INFSPKPR693M)

300W Peak (100W RMS) 6.5” Primus Series 2-way 3-ohm + 360W Peak (120W RMS) 6x9” 3-way 3-ohm Coaxial Car Speakers

• 150 watts Peak Each, 50 watts RMS Each
• 1/2" Silk Edge-driven Dome tweeters
• Polypropylene cone material with Plus One woofer cone architecture
• 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.
install icon

Install kits available for most vehicles

No Fit Icon Doesn't fit your 528i

8
List price $289.90
-21% $229.91

In stock

Add to Cart

• 150 watts Peak Each, 50 watts RMS Each
• 1/2" Silk Edge-driven Dome tweeters
• Polypropylene cone material with Plus One woofer cone architecture
• Impedance: 3 ohm
• Sensitivity: 92 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
Go to item page Right Arrow Icon of Right Arrow

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

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 528i

List price $239.90
-54% $109.90

In stock

Add to Cart

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

Lowest price in 30 days

Infinity Kappa 463XF (2-Pairs, 4-Total)

720W Peak (240W RMS) 4x6" Kappa Series 2-way Coaxial Car Speakers (2-Pairs)

KAPPA463XF_2 big
Go to item page Right Arrow Icon of Right Arrow

Infinity Kappa 463XF (2-Pairs, 4-Total)

720W Peak (240W RMS) 4x6" Kappa Series 2-way Coaxial Car Speakers (2-Pairs)

• 180 watts Peak Each, 60 watts RMS Each
• 1" 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.
found car based on your search
Fits your 528i
3
List price $539.90
-26% $399.90

Available

Ships in 10-14 days

Add to Cart

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

Infinity REF607CF (2-Pairs, 4-Total)

1080W Peak (360W RMS) 6.5" Reference Series 2-way 4-ohm Component Speaker System (2-Pairs)

REF607CF_2 big
Go to item page Right Arrow Icon of Right Arrow

Infinity REF607CF (2-Pairs, 4-Total)

1080W Peak (360W RMS) 6.5" Reference Series 2-way 4-ohm Component Speaker System (2-Pairs)

• 270 watts Peak Each, 90 watts RMS Each
• 3/4" Textile Dome Tweeters
• Polypropylene cone material
• Impedance: 4 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 528i

3
List price $499.90
-12% $439.90

In stock.

Add to Cart

• 270 watts Peak Each, 90 watts RMS Each
• 3/4" Textile Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 93 dB

Infinity Reference REF-4032cfx (2-Pairs, 4-Total)

420W Peak (140W RMS) Reference Series 4" 2-Way Car Speakers (2-Pairs)

REF4032CFXAM_2 big
Go to item page Right Arrow Icon of Right Arrow

Infinity Reference REF-4032cfx (2-Pairs, 4-Total)

420W Peak (140W RMS) Reference Series 4" 2-Way Car Speakers (2-Pairs)

• 105 watts Peak Each, 35 watts RMS Each
• 1" 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 528i

1
List price $279.90
-43% $159.98

In stock.

Add to Cart

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

Infinity REF687F (2-Pairs, 4-Total)

720W Peak (240W RMS) 6x8" Reference Series 2-way 4-ohm Coaxial Speakers (2-Pairs)

REF687F_2 big Out of stock
Go to item page Right Arrow Icon of Right Arrow

Infinity REF687F (2-Pairs, 4-Total)

720W Peak (240W RMS) 6x8" Reference Series 2-way 4-ohm Coaxial Speakers (2-Pairs)

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

Save 15% Off Package Deals at Checkout!

No Fit Icon Doesn't fit your 528i

1
List price $319.90
-19% $259.90
Add to Cart

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

Infinity Reference REF-8632CFX (2-Pairs, 4-Total)

720W Peak (240W RMS) 6x8" Reference Series 2-Way Coaxial Car Speakers (2-Pairs)

REF8632CFXAM_2 big Out of stock
Go to item page Right Arrow Icon of Right Arrow

Infinity Reference REF-8632CFX (2-Pairs, 4-Total)

720W Peak (240W RMS) 6x8" Reference Series 2-Way Coaxial Car Speakers (2-Pairs)

• 180 watts Peak Each, 60 watts RMS Each
• 1" Textile Edge-driven Dome Tweeters
• Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 93 dB

Save 15% Off Package Deals at Checkout!

No Fit Icon Doesn't fit your 528i

5
List price $319.90
-50% $159.90
Add to Cart

• 180 watts Peak Each, 60 watts RMS Each
• 1" Textile Edge-driven Dome Tweeters
• Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 93 dB

Infinity REF307F (2-Pairs, 4-Total)

300W Peak (100W RMS) 3.5" Reference Series 2-way 3-ohm Speakers (2-Pairs)

REF307F_2 big Out of stock
Go to item page Right Arrow Icon of Right Arrow

Infinity REF307F (2-Pairs, 4-Total)

300W Peak (100W RMS) 3.5" Reference Series 2-way 3-ohm Speakers (2-Pairs)

• 75 watts Peak Each, 25 watts RMS Each
• 1/2" Textile Balanced Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 91 dB

Save 15% Off Package Deals at Checkout!

No Fit Icon Doesn't fit your 528i

4
List price $259.90
-23% $199.90
Add to Cart

• 75 watts Peak Each, 25 watts RMS Each
• 1/2" Textile Balanced Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 91 dB

Infinity REF-6532ex (2-Pairs, 4-Total)

660W Max (220W RMS) 6.5" Reference Series 2-Way Coaxial EZ Fit Car Speakers (2-Pairs)

REF6532EXAM_2 big Out of stock
Go to item page Right Arrow Icon of Right Arrow

Infinity REF-6532ex (2-Pairs, 4-Total)

660W Max (220W RMS) 6.5" Reference Series 2-Way Coaxial EZ Fit Car Speakers (2-Pairs)

• 165 Watts Max Each, 55 Watts RMS Each
• Edge-Driven Textile Tweeter
• Plus One Polypropylene Oversized Cone
• 3 ohm Impedance
• Sensitivity: 93dB
• Mounting Depth: 1-13/16"

Save 15% Off Package Deals at Checkout!

No Fit Icon Doesn't fit your 528i

6
List price $260.00
-38% $159.98
Notify Me

• 165 Watts Max Each, 55 Watts RMS Each
• Edge-Driven Textile Tweeter
• Plus One Polypropylene Oversized Cone
• 3 ohm Impedance
• Sensitivity: 93dB
• Mounting Depth: 1-13/16"

Infinity REF607F + 9633IX (REF9633IXAM)

360W Peak (120W RMS) 6.5" Reference Series 2-way 4-ohm + 600W Peak (200W RMS) 6x9" 3-way 3-ohm Coaxial Car Speakers

REF607F_REF9633IXAM big Out of stock
Go to item page Right Arrow Icon of Right Arrow

Infinity REF607F + 9633IX (REF9633IXAM)

360W Peak (120W RMS) 6.5" Reference Series 2-way 4-ohm + 600W Peak (200W RMS) 6x9" 3-way 3-ohm Coaxial Car Speakers

• 180 watts Peak Each, 60 watts RMS Each
• 1" Textile Edge-driven Dome tweeters with 3dB level adjustment
• Polypropylene cone material with Plus One woofer cone architecture
• Impedance: 4 ohm
• Sensitivity: 93 dB

Save 15% Off Package Deals at Checkout!
install icon

Install kits available for most vehicles

No Fit Icon Doesn't fit your 528i

3
List price $349.90
-34% $229.90 /pair
Add to Cart

• 180 watts Peak Each, 60 watts RMS Each
• 1" Textile Edge-driven Dome tweeters with 3dB level adjustment
• Polypropylene cone material with Plus One woofer cone architecture
• Impedance: 4 ohm
• Sensitivity: 93 dB

Infinity REF607FSL + Infinity Reference 9633IX

330W Peak (110W RMS) 6.5" Reference Series 2-way 3-ohm + 200W RMS 6x9" Coaxial Car Speakers

REF607FSL_REF9633IXAM big Out of stock
Go to item page Right Arrow Icon of Right Arrow

Infinity REF607FSL + Infinity Reference 9633IX

330W Peak (110W RMS) 6.5" Reference Series 2-way 3-ohm + 200W RMS 6x9" Coaxial Car Speakers

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

Save 15% Off Package Deals at Checkout!
install icon

Install kits available for most vehicles

No Fit Icon Doesn't fit your 528i

3
List price $339.90
-35% $219.90 /pair
Add to Cart

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

Infinity REF607F (INFSPKRF607FUS) with REF-9632ix

360W Peak (120W RMS) 6.5" Reference Series 2-way 4-ohm + 600W Max (200W RMS) 6x9" Coaxial Car Speakers

REF607F_REF9632IXAM big Out of stock
Go to item page Right Arrow Icon of Right Arrow

Infinity REF607F (INFSPKRF607FUS) with REF-9632ix

360W Peak (120W RMS) 6.5" Reference Series 2-way 4-ohm + 600W Max (200W RMS) 6x9" Coaxial Car Speakers

• 180 watts Peak Each, 60 watts RMS Each
• 1" Textile Edge-driven Dome tweeters with 3dB level adjustment
• Polypropylene cone material with Plus One woofer cone architecture
• Impedance: 4 ohm
• Sensitivity: 93 dB

Save 15% Off Package Deals at Checkout!
install icon

Install kits available for most vehicles

No Fit Icon Doesn't fit your 528i

4
List price $319.90
-19% $259.90 /pair
Add to Cart

• 180 watts Peak Each, 60 watts RMS Each
• 1" Textile Edge-driven Dome tweeters with 3dB level adjustment
• Polypropylene cone material with Plus One woofer cone architecture
• Impedance: 4 ohm
• Sensitivity: 93 dB

Infinity REF607F (INFSPKRF607FUS) with REF697MF (INFSPKRF697MFUS)

360W Peak (120W RMS) 6.5" Reference Series 2-way 4-ohm Coaxial Speakers + 600W 6x9" Reference Series 3-way 4-ohm

REF607F_REF697MF big Out of stock
Go to item page Right Arrow Icon of Right Arrow

Infinity REF607F (INFSPKRF607FUS) with REF697MF (INFSPKRF697MFUS)

360W Peak (120W RMS) 6.5" Reference Series 2-way 4-ohm Coaxial Speakers + 600W 6x9" Reference Series 3-way 4-ohm

• 180 watts Peak Each, 60 watts RMS Each
• 1" Textile Edge-driven Dome tweeters with 3dB level adjustment
• Polypropylene cone material with Plus One woofer cone architecture
• Impedance: 4 ohm
• Sensitivity: 93 dB

Save 15% Off Package Deals at Checkout!
install icon

Install kits available for most vehicles

No Fit Icon Doesn't fit your 528i

4
List price $349.90
-17% $289.90 /pair
Add to Cart

• 180 watts Peak Each, 60 watts RMS Each
• 1" Textile Edge-driven Dome tweeters with 3dB level adjustment
• Polypropylene cone material with Plus One woofer cone architecture
• Impedance: 4 ohm
• Sensitivity: 93 dB

Infinity REF607F Harley Davidson Speaker & Adapter Plate Combo

360W Peak (120W RMS) 6.5" Reference Series 2-way 4-ohm Coaxial Speakers

98-13-HARLEY-DAVIDSON-INF big Out of stock
Go to item page Right Arrow Icon of Right Arrow

Infinity REF607F Harley Davidson Speaker & Adapter Plate Combo

360W Peak (120W RMS) 6.5" Reference Series 2-way 4-ohm Coaxial Speakers

• 180 watts Peak Each, 60 watts RMS Each
• 1" Textile Edge-driven Dome tweeters with 3dB level adjustment
• Polypropylene cone material with Plus One woofer cone architecture
• Impedance: 4 ohm
• Sensitivity: 93 dB

Save 15% Off Package Deals at Checkout!

No Fit Icon Doesn't fit your 528i

8
List price $179.94
-18% $146.94
Add to Cart

• 180 watts Peak Each, 60 watts RMS Each
• 1" Textile Edge-driven Dome tweeters with 3dB level adjustment
• Polypropylene cone material with Plus One woofer cone architecture
• Impedance: 4 ohm
• Sensitivity: 93 dB

Infinity REF607F + REF687F

360W Peak (120W RMS) 6.5" Reference Series 2-way 4-ohm + 6x8" Reference Series 2-way 3-ohm Coaxial Car Speakers

REF607F_REF687F big Out of stock
Go to item page Right Arrow Icon of Right Arrow

Infinity REF607F + REF687F

360W Peak (120W RMS) 6.5" Reference Series 2-way 4-ohm + 6x8" Reference Series 2-way 3-ohm Coaxial Car Speakers

• 180 watts Peak Each, 60 watts RMS Each
• 1" Textile Edge-driven Dome tweeters with 3dB level adjustment
• Polypropylene cone material with Plus One woofer cone architecture
• Impedance: 4 ohm
• Sensitivity: 93 dB

Save 15% Off Package Deals at Checkout!
install icon

Install kits available for most vehicles

No Fit Icon Doesn't fit your 528i

3
List price $309.90
-19% $249.90
Add to Cart

• 180 watts Peak Each, 60 watts RMS Each
• 1" Textile Edge-driven Dome tweeters with 3dB level adjustment
• Polypropylene cone material with Plus One woofer cone architecture
• Impedance: 4 ohm
• Sensitivity: 93 dB

Infinity REF607FSL (INFSPKRF607FSLUS) + REF697MF (INFSPKRF697MFUS)

110W RMS 6.5" Reference Series 2-way 3-ohm + 200W RMS 6x9" Reference Series 3-way 4-ohm Coaxial Car Speakers

REF607FSL_REF697MF big Out of stock
Go to item page Right Arrow Icon of Right Arrow

Infinity REF607FSL (INFSPKRF607FSLUS) + REF697MF (INFSPKRF697MFUS)

110W RMS 6.5" Reference Series 2-way 3-ohm + 200W RMS 6x9" Reference Series 3-way 4-ohm Coaxial Car Speakers

• 165 watts Peak Each, 55 watts RMS Each
• 1" Textile Balanced Dome Tweeters
• Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 93 dB
• Includes 6x9" Reference Speakers

Save 15% Off Package Deals at Checkout!
install icon

Install kits available for most vehicles

No Fit Icon Doesn't fit your 528i

4
List price $339.90
-18% $279.47 /pair
Add to Cart

• 165 watts Peak Each, 55 watts RMS Each
• 1" Textile Balanced Dome Tweeters
• Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 93 dB
• Includes 6x9" Reference Speakers

Prev 1 2 3 Next

Items per page: 20 40 60

    Clear all
    why-shoping-with-sonic

    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!
    Why Shop With Us?
    Save up to 10 different vehicles in your garage
    Vehicle
    Store     Delete

    2015 Chevrolet Corvette

    1981 BMW 528i

    1994 Ford Bronco

    1964 Ford Thunderbird

    2014 Ford Taurus

    2010 Bugatti Veyron 16.4

    2017 Kia Optima

    2004 Jaguar S-Type

    1995 Cadillac DeVille

    1995 Suzuki Swift

    Vehicle
    Store     Delete

    2013 Harley Davidson FLD Switchback

    Vehicle
    Store     Delete

    2013 Can-Am Commander E LSV

    2012 Can-Am Commander 1000

    2021 Can-Am Defender MAX HD8 DPS

    Add vehicle Clear all vehicles
    Where to find vehicle info
    Are you sure you want to clear your garage?
    This action cannot be undone. Confirm

    Cancel

    This category was not designed for products.
    If you continue, you will be redirected to a category customized for your vehicle. Continue

    Cancel

    Shop your 1981 528i
    Why Use a Vehicle Fit Guide?
    Change vehicle | Shop without vehicle
    Whoa! Slow down. Add your details below!
    additional information required
    Add vehicle details to confirm fitment
    Ignore fitment details
    Find stereos and more that work -- fast.
    Remove

    Can't find your vehicle? Click here and we'll help.

    Where to find vehicle info

    Go to Fitment

    Didn't find your car?

    Submit your details and we'll help!
    Please enter the letters as they are shown in the image above. Letters are not case-sensitive.
    Identify your vehicle and submodel details
    • Owner's manual
    • Vehicle's insurance card
    • Vehicle registration
    • Vehicle produced after 2005: Inside driver's side door
    • Vehicle produced before 2005: Rear passenger doorjamb, glove box, center console, or engine compartment
    Car Info Side Door Icon
    Vehicle Registration Icon
    Vehicle Insurance Icon
    Back

    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.

    Back
    Track your order
    Call our experts
    Support Center
    Return & Exchanges
    Follow on Instagram Instagram logo
    Subscribe on YouTube YouTube logo