SKU: 34989445835

Kicker 51KSS6904 – 6″ X 9″ 150 Watts RMS Components

Sale price$224.55 Regular price$249.50
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Description

Kicker 51KSS6904 – 6″ X 9″ 150 Watts RMS ComponentsCenter Stage KICKER KS Series Speakers let you play at concert like volume, yet maintain the smoothness and subtlety to please even the most selective ear. Internally dampened polypropylene cones and durable rubber surrounds assist the woofers in creating precise midrange and bass, while high quality silk dome tweeters deliver natural, detailed highs. Experience your music as a component system with separate tweeters, or as a high end coaxial system.

Center Stage

KICKER KS-Series Speakers let you play at concert-like volume, yet maintain the smoothness and subtlety to please even the most selective ear. Internally dampened polypropylene cones and durable rubber surrounds assist the woofers in creating precise midrange and bass, while high-quality silk-dome tweeters deliver natural, detailed highs.

Experience your music as a component system with separate tweeters, or as a high-end coaxial system. The woofers’ removable bullet-style phase plug is replaced with a special adapter, allowing the 25 millimeter, silk-dome tweeters to rotate and tilt. You get more system design options and superior off-axis performance. They work best with 15 to 125 watts of recommended power. See below for more details.

High power handling
Silk-dome tweeters for a smooth sound
Polypropylene woofer and tough rubber surrounds
Thin-mount design easily fits behind factory grilles
Four tweeter mounting options
Articulating tweeter pod included
Smaller crossover makes mounting even easier
Grilles included

Specifications
Woofer [in, mm]
6×9, 160×230
Tweeter [in,mm]
1, 25
Dome Material
Silk
Rated Impedance [″]
4
Recommended Amplifier Power [Watts RMS]
15-150
Sensitivity [1W, 1m]
92
Frequency Response [Hz]
35-21k
Woofer Mounting Hole Diameter [in, mm]
5-5″8×8-7″16, 143×215
Woofer Bottom Mount Depth [in, mm]
2-15″16, 75
Flush Mount Tweeter Hole Diameter [in,mm]
1-¾, 45
Flush Mount Tweeter Depth [in,mm]
11″16 , 17
High Pass [dB], at Frequency [Hz]
12, 4,000
Low Pass [dB], at Frequency [Hz]
none
High Frequency Output Attenuation [dB]
0, 4.5, 9
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 34989445835

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4.8 ★★★★★
Based on 14 reviews
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Verified Purchase
Teresa
Belleville, US
★★★★★ 5
Outlet extender
I love this product. Work great behind my couch so i don't have to leave a gap between the wall and couch. Very sturdy, and stable. Holds plugs in place.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 29, 2026
J
Verified Purchase
Jorge C.
Draper, US
★★★★★ 5
Exelent choice no more hinging cables
I recently purchased the EZ Outlet Electrical Outlet Extender, and it has been a total game-changer for my home. I have a few outlets behind furniture and in tight corners that are almost impossible to use, and this product solved that problem instantly. The extender itself feels very sturdy and well-made. The most useful feature is the flexible, gooseneck-like arm that lets you bend the outlet away from the wall. This allowed me to easily plug in my lamp and a few other devices that were previously unreachable. I also love the extra ports. The two regular AC outlets, a USB-A port, and a USB-C port are incredibly convenient. It's great to be able to charge my phone and my laptop from the same spot without needing a separate charging block. The USB-C port is particularly fast, which is a huge bonus. Setup was as easy as plugging it in. There's no complicated wiring or anything to deal with. It's a simple, elegant solution that works exactly as advertised. If you have any hard-to-reach outlets in your home, I highly recommend this product. It's well worth the investment.
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Reviewed in the United States on September 24, 2025
L
Verified Purchase
lapak
Dallas, US
★★★★★ 4
Looks good, adjustability is super nice
This is attractive (for what it is) and is working well, I really like the adjustability - the only downside so far is that the USB ports are on the underside where I'm using it, so are basically unusable on a regular basis unless you want to leave a cable dangling from it, tho if you had it run up or to the right from the outlet, that wouldn't be a factor.
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Reviewed in the United States on April 25, 2026
O
Verified Purchase
One Another Missions
Belleville, US
★★★★★ 5
Its Quality
I absolutely love this! It’s a life changer for me as I’m always pulling the cord out from the wall in the attempt to stretch it. This now sits plug now sits perfectly between my bed and the wall. Excellent quality, easy to plug in and makes my life easier!
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Reviewed in the United States on May 8, 2026
M
Verified Purchase
MicDi
Birmingham, US
★★★★★ 5
Nice length and looks good
Bought two different types/brands of outlet extenders, overall I like this better out of the two when it comes to looks and functionality. This one you plug it in then rotate the outlet to the spot you need. One adhesive pad holds it in place easily due to light weight and trim materials. You can still plug something else in the wall outlet, this only takes up one of the outlets. It would be great if they added usb plugs to this like the other one.
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Reviewed in the United States on April 14, 2026

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