Kicker 51KSS6904 – 6″ X 9″ 150 Watts RMS Components
SKU: 34989445835

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

Sale price$224.55 Regular price$249.50
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Ships within 48 hours · Estimated delivery Jul 6 - Jul 11

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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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4.1 ★★★★★
Based on 573 reviews
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Pudatane
Whiting, US
★★★★★ 5
Great Heel Socks
Material Type: Black - 3 Pairs, Size: Large
I don't know how they work but it's wonderful. I've had rough heel problems for a long time. I wear these everyday and my heels are not rough. They're not baby bottom smooth, but they are not ever going to be. These heel socks also oncce they are properly positioned snap onto the heel. Properly positioning them is easy when you put them on your foot with the heel cup in the correct orientation.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 14, 2026
B
Verified Purchase
beachx
Whiting, US
★★★★★ 3
Too small
Material Type: Gray - 3 Pairs, Size: X-Large
Too tight! Even size large used for a man with smaller feet is too tight. Also, no instructions for use or care.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 21, 2026
J
Verified Purchase
Jo-Ann Epstein
Belleville, US
★★★★★ 5
Good fit
Material Type: Black - 3 Pairs, Size: X-Large
My husband just started using these and they feel comfortable. Hasn't used them long enough to see if his heels are better. He has a high arch so I bought him the XL and they fit perfectly.
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Reviewed in the United States on April 24, 2026
M
Verified Purchase
M.R.
Whiting, US
★★★★★ 5
No more painful cracked heels! These really do work!
Material Type: Black - 3 Pairs, Size: X-Large
These really do work well. This is one of the first winters that I have not experienced painful, cracked heels. They are long lasting, and definitely make my heels smoother and softer after wearing them. For the first few times wearing them I simply went with the moisturizer embedded in them. After a few uses I then covered my heels with Aquaphor Advanced Therapy Healing Ointment. This worked even better, and I would recommend it. I am very glad I bought these. Of note, I have really big feet that are quite wide and the XL are a little snug but not uncomfortably so. I use them overnight, but also have worn them under socks and they work fine.
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Reviewed in the United States on February 3, 2026
J
Verified Purchase
Jen
Dallas, US
★★★★★ 5
🧦 Simple & Effective – ZenToes Moisturizing Socks Review ✨
Color: Green Gingham & Multi Plaid, Size: Regular
These ZenToes moisturizing socks are such a smart and effective solution for dry, cracked heels! I really like that they only cover the heels instead of the whole foot—no hot, sweaty toes, which is a huge plus. They come in a pack of two, and for the price, it’s a great value. I also found that they fit well and stayed in place overnight. They were a bit snug around my foot, but still comfortable enough to wear. What really impressed me is how well they work. The socks are nice and thick, and after just one use overnight, my heels were noticeably smoother. Even better—the results lasted about a week without needing any extra lotion, which I personally love since I’m not a fan of applying creams. I would definitely buy these again and highly recommend them if you’re looking for an easy, low-maintenance way to keep your heels soft.
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Reviewed in the United States on March 22, 2026

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