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Kicker KM604W

6-1/2" 2-way marine speakers

40 Reviews | 3 questions - 5 answers

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Item # 20641M604W

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Overview

Our take on the Kicker KM604W

These powerful Kicker 6-1/2" speakers are tough enough for marine duty, but easy on your ears. The durable poly woofers and 1/2" balanced dome tweeters cut through wind, waves, and engine roar to deliver great sound without annoying harshness. The classic white grilles will look great in your boat, too.

Great sound, subtle design

These powerful Kicker 6-1/2" speakers are tough enough for marine duty, but easy on your ears. The durable poly woofers and 1/2" balanced dome tweeters cut through wind, waves, and engine roar to deliver great sound without annoying harshness. The classic white grilles will look great in your boat, too.

Like all KM Series models, Kicker designed these 4-ohm speakers for life on the water, with sealed motors, rubber cone surrounds, and locking terminal covers to keep spray away from the internal componentry. They'll also stand up to harsh sunlight, thanks to special UV treatments on the cones, surrounds, baskets, and grilles. Whether you're on fresh water or salt, these speakers will give you years of outstanding performance.

Product Highlights:

  • 2-way 6-1/2" marine speakers (pair)
  • UV-treated polypropylene woofer with Santoprene rubber surround
  • 1/2" PEI film dome tweeter with neodymium magnet
  • white grilles
  • sealed motor structure and locking terminal covers
  • power range: 2-50 watts RMS (150 watts peak power)
  • frequency response: 35-21,000 Hz
  • sensitivity: 90 dB
  • top-mount depth: 2-1/2"
  • warranty: 1 year
  • Our 60-day money-back guarantee

These ABSOLUTELY sound great with highs and lows also very well built.

Walter, Danbury , CT

What's in the Box:

  • Two 2-way speakers with attached white grilles
  • Eight 1" Self-tapping stainless steel screws
  • 8 Stainless steel speed clips
  • Owner's manual (English/ Spanish/ German/ French)

Featured Video:

Reviews

Kicker KM604W Reviews

Average Customer Review(s):

(40 Reviews)

Great sounds

Walter from Danbury , CT on 9/7/2017

Crutchfield Customer Review (What's this?)

These ABSOLUTELY sound great with highs and lows also very well built.

Pros: I should of bought these years ago they sound great.

Cons: None

Kicker KM604W

Chris from Richmond Hill, GA on 8/20/2017

Crutchfield Customer Review (What's this?)

Kicker speakers to replace old pioneers. Sound great, clean look and great update to my boat! May get more for my other boat. Crutchfield delivers again.

Pros: Easy install Great sound

Cons: None

Kicker KM604W

KENNETH from San Antonio Tx on 8/14/2017

Crutchfield Customer Review (What's this?)

They look great And sound better I would buy them again

Pros: Sound and look great

Cons: None

Kicker KM604W

Steve from Santa Barbara, CA on 7/31/2017

Crutchfield Customer Review (What's this?)

So far so good. I have these hooked up to a cheap deck on the boat and they work great. Going to upgrade the deck and see what these babies can handle

Pros:

Cons:

Great sound/easy installation

Tom from Northern Virginia on 7/24/2017

Crutchfield Customer Review (What's this?)

I purchased the speakers based upon the reviews I read at Crutchfield. The performance did not disappoint and the replacement installation took less than 10 minutes. I am using the speakers(2) on a 22 foot pontoon boat and they can be clearly heard by all people on the boat. When I take the boat out of the water in the Fall, I will certainly consider adding two additional speakers. The speakers arrived promptly from Crutchfield and the entire experience was very positive.

Pros: Easy install and great sound

Cons: none so far

Kicker KM604W

Rob from Jupiter, FL on 7/21/2017

Crutchfield Customer Review (What's this?)

Sound awesome, crisp, clear and can crank them up... paired with a Fusion MS-RA70N head unit... Mounted flush in gunwales (sides) of 21 foot Contender... Great speakers...

Pros:

Cons:

Great Speakers at a Great Price

Steve from Alexandria, VA on 7/20/2017

Crutchfield Customer Review (What's this?)

Great value. The speakers sound great at a low price. They are perfect for the installation on the radar arch of our boat.

Pros: Great sound Easy replacement of factory 6.5" speakers Well priced

Cons: None noted for the price I paid

Easy replacement

KurtL from Canyon Lake, TX on 7/18/2017

Crutchfield Customer Review (What's this?)

These 6.5" 4 ohm speakers replaced the original units that came installed in my 12 year old Supra wake-board boat. They look good and sound quality is great.

Pros: perfect replacement

Cons: None

AWESOME!!!!

Marv from City Island, New York on 7/16/2017

Crutchfield Customer Review (What's this?)

Awesome. Super easy to install. Perfect speakers.

Pros: Super easy to install!!!!

Cons: No cons at all!!!!

Kicker KM604W

Anonymous from Columbia, TN on 7/4/2017

Crutchfield Customer Review (What's this?)

Great price. The sound is great and look great in my boat

Pros:

Cons:

#1 Kicker

Jay from Yukon, OK on 7/2/2017

Crutchfield Customer Review (What's this?)

1998 Crownline 225br Great sound quality using stereo to power, easy to install. Like that the grills are not removable! Kicker never fails great products!

Pros: Plug in play, great sound, very good quality

Cons: Terminals not labeled positive or negative

Great speakers for the price

Jim from Edgewood, MD on 6/19/2017

Crutchfield Customer Review (What's this?)

These speakers sound great compared to the 13 year old factory speakers. Installed 1 set in the cockpit of my Sea Ray 260 and have another awaiting install on the radar arch. Combined with a Sony MEXM71BT head unit and Alpine KTP445U amp. At 2" depth, these are the slimmest marine-grade speakers available in a white color (only thinner speakers are Polks but they are black). This is a big deal especially when installing on a radar arch that very in thickness and even with these speakers, I had to have a friend fabricate a 1/2" PVC spacer.

Pros: 2" depth. Great sound for the $$

Cons: None

Nice Sound

Carol from Rochester, MI on 6/19/2017

Crutchfield Customer Review (What's this?)

We put these in our boat and they sound great for the price. Bass is a little lacking but will be installing new amp and sub soon.

Pros: These speakers sound really good.

Cons: None so far.

Kicker KM604W

Anonymous from Wylie, TX on 6/8/2017

Crutchfield Customer Review (What's this?)

Great product with great sound. I did have a little trouble with the speakers fitting into my existing 6" holes but otherwise good product.

Pros:

Cons:

Kicker KM604W

Dave from Cumberland, MD on 5/21/2017

Crutchfield Customer Review (What's this?)

Replaced a set of fusion speakers that I had put in 6 yr ago. Thought the fusion sounded great. But these are the bomb!!! The sound is unbelievable.. highly recommended..

Pros: Perfect fit.

Cons: Not so far!!!

Great sounding

Thomas from West Bend, WI on 5/9/2017

Crutchfield Customer Review (What's this?)

Very nice product , sounds way better than the original speakers that were in our boat. I definitely give the speakers a five star rating for sound and looks.

Pros: Looks and sounds great!!

Cons: I have no cons.

Kicker KM604W

Matt from Peachtree City, GA on 4/9/2017

Crutchfield Customer Review (What's this?)

Purchased these to upgrade my pontoon sound system. WOW........I installed two sets and they sound amazing. No amp just running off head unit and they still have a ton of bass. I recommend these to anyone looking for a great set of 6.5"!!

Pros:

Cons:

Great sound and durability.

Felix from Dorado, PR on 3/17/2017

Crutchfield Customer Review (What's this?)

This is the second time I purshed them. The old ones last years of intensive tropical sun, salt and humidity. I have 4 with an old Sony 600w amp and they sound great and loud. For the price they are a good choice.

Pros: Loud Great clarity Good bass

Cons:

Good value for a resonable cost

Timothy from Jacksonville, FL on 3/14/2017

Crutchfield Customer Review (What's this?)

The sound is strong across all spectrums. I have 6 of them in a 24 ft. bay boat.

Pros: good bass, install easily

Cons: not sure how long they will last in my bay boat since it gets wet sometimes, Had them about 2 months so far

Kicker KM604W

Nate from Lusby, MD on 3/3/2017

Crutchfield Customer Review (What's this?)

Great speakers so far for the price! I put 2 sets on my golf cart. Wish the speaker grill could be taken off to be painted but they can't.

Pros:

Cons:

Kicker KM604W

Anonymous from Belmont, MI on 3/1/2017

Crutchfield Customer Review (What's this?)

Installed 4 Kicker marine speakers in our Center Console boat. Sounds great. Clear no distortion crisp highs and good lows. Happy with purchase and would buy again.

Pros: Easy install

Cons: No wire connectors included for speaker

Kicker KM604W

T.J. from Geneseo, IL on 1/15/2017

Crutchfield Customer Review (What's this?)

Put these in a Jeep Wrangler. Fit the factory sound bar with minimal modification. Power via and alpine 45 watt amp. They look great and deliver clear, crisp mid-range as component. I experienced distortion at louder volume prior to activating the high pass filter, so probably not going to give you much bass if that's what you are wanting.

Pros: Look awesome, good sound.

Cons: Not good for bass.

Kicker KM604W

Sam in SC from Effingham sc on 7/5/2016

Crutchfield Customer Review (What's this?)

Very good sound super bass

Pros:

Cons:

Crownline Razor -major improvement

Mr.Fruffles from Tinley park, il on 6/6/2016

Crutchfield Customer Review (What's this?)

Installed them and was blown away with how good they sound. Did not even need an amp. Crutchfield led me to the right product! Thanks you!

Pros: Sound Price

Cons: None

Kicker KM604W

Anonymous from Knoxville, TN on 4/28/2016

Crutchfield Customer Review (What's this?)

I replaced the speakers in my 2006 Four Winns Deckboat. Good sound for a good price. These seem to be pretty durable. Since I just installed these speakers, I cannot comment on their longevity or how they will handle marine use.

Pros:

Cons:

Recommend

J.L. from Charlotte NC on 3/9/2016

Crutchfield Customer Review (What's this?)

Great speakers. Got some guidance and help from the staff dedeciding on the right choice. Installed them two weekends ago. Still a little too cool to be out on the lake but spent most of last weekend sitting in the slip enjoying! Very eclectic music taste and these sounded great across all genres. Looking forward to getting away from the dock so I can crank them up a bit without dirty looks from my Marina neighbors.

Pros:

Cons:

Great Marine Replacement Speakers

TravisH from Nashville TN on 1/19/2016

Replaced the blown out Jensen speakers that came with my Party Barge with these, radio has 40W RMS output, so I didn't amplify separately, they sound great, nice mid and low range and easy to install with one piece design.

Pros: Sound Ease of Install Delivered quickly Well packed

Cons: None

Amazing

Hunter from Tennessee on 9/21/2015

Crutchfield Customer Review (What's this?)

They will take every bit of the rms of 90 and then some. I have them in my jeep and they are so clean.

Pros: everything they are awesome

Cons: nothing

Boom Bang

notfastnotfurious from Wisco on 7/24/2015

Crutchfield Customer Review (What's this?)

The speakers themselves are awesome. I'm not a big audiophile so i can't tell you how much better the mid's were than the hi's, but they sounds great in the boat, and when paired with the amp i picked up kick out great sounding music all that way up to the head unit's max volume. I would have given a 5 star review, but i'm disappointed that Crutchfield didn't ship plug on leads for the speakers, c'mon Crutchfield?!

Pros: I said above

Cons: no plug on leads for speakers, must make your own or solder some on

Kicker KM604W

John D from North Carolina on 6/16/2015

Crutchfield Customer Review (What's this?)

Grand Kids Love New Speakers

Pros:

Cons: Grill is to open in front of speaker

Excellent value!

DaveL from Minnesota on 6/12/2015

Crutchfield Customer Review (What's this?)

I ordered two pairs to replace the four original marine speakers (2003) that had completely degraded. I am really happy! These Kickers are a terrific value! The bass is solid and the mid and high ranges sound fine. Running off stock JVC deck at 45 watts per channel. There are a lot of options for stock/OEM replacements... Kicker is a very good choice.

Pros: 1.) Ease of installation 2.) No separate grill; cover "grill" integrated into speaker frame. 3.) They sound very good in factory locations.

Cons: No problems that I encountered.

Great spekers

Dander3 from South Carolina on 5/27/2015

Crutchfield Customer Review (What's this?)

I bought these to replace a pair of Clarion marine speakers that blew after a year. All I can say is WOW, these kickers are great for the price. The bass is impressive and the highs are pretty good. I'm still running them on my old Jensen head unit, but I'm sure they would sound even better with more power. I had several people ask this weekend if I had a sub on the boat the bass was so good. I would absolute recommend these speakers.

Pros: Great bass Very efficient

Cons: the tweeter is a little scratchy, but still good for the price.

Kicker KM604W

Anonymous from Terry ms on 5/16/2015

Crutchfield Customer Review (What's this?)

Purchased these to go in some tubes for a four wheeler! These speakers are on a clarion amp and they are insane!

Pros:

Cons:

Great speakers

Anonymous from Gainseville, Fl on 5/15/2015

Crutchfield Customer Review (What's this?)

Used them to make a waterproof speaker work great. Sound is clear and have good bass.

Pros:

Cons:

Much better than factory

DM from Ohio on 4/20/2015

Crutchfield Customer Review (What's this?)

I replaced my factory 6.5" speakers in my Yamaha 242 Limited. I kept the factory head unit and the new Kickers sound 100 times better. I know they perform even better with an amp but I chose to keep my factory unit for now. Well worth the investment and the advice I received from Crutchfield was 100% on par with what I needed. Thanks!

Pros: Great value, great sound, superb sensitivity, low power need

Cons: None

km60 speakers

Ty from oklahoma on 4/12/2015

Crutchfield Customer Review (What's this?)

Put 2 pair of these in our boat. They sound great. I almost went with the more expensive color changing ones, but decided on these. They're ez to install, crisp and clear. Powering them with a Fusion stereo, seems like a perfect match. Thanks Crutchfield.

Pros: Not too expensive, sound great, look great, and efficient.

Cons: None yet

what i expected

markos from san diego on 9/27/2014

Crutchfield Customer Review (What's this?)

put them in my 32 foot monterey. they sound as expected. my issues stem more from needing more power and a sub than anything. but these speakers fit their need. i'm satisfied with them.

Pros:

Cons:

Surprise Performance

CarlG from Ridgefield, CT on 9/5/2014

Crutchfield Customer Review (What's this?)

I didn't expect the response range and the efficiency from these speakers. Sound quality equal to speakers costing much more. Performed very well at higher volumes while operating the boat.

Pros: Great quality at an affordable price

Cons: Wished they were a little smaller to fit in original cut outs.

What an improvement!

Sparky from Clintonville, WI on 8/21/2014

Crutchfield Customer Review (What's this?)

Huge improvement over the stock speakers in my boat. Better sound throughout the entire listening range. I'm sure these speakers would really deliver with a marine amplifier!

Pros: Great performance. Excellent price.

Cons:

Kicker KM604W

Jeff from Tim's Ford Lake, TN on 7/8/2014

Crutchfield Customer Review (What's this?)

I put 4 of these speakers in my boat and they sound great. They have excellent depth/bass. The 22 watt Kenwood gives them plenty of power for all the volume and quality sound I need. I am very pleasantly suprised with these speakers.

Pros: depth/bass and quality sound at high volume

Cons: Measurement provided but no "cut out" template to trace for marking hole cut. Expected one on the box but not there.

Details

Hands-on research

Features and Specs

General
Speaker Size 6 1/2
Design 2-way
Tweeter Design 1/2" Balanced Dome
Tweeter Composition PEI
Woofer Composition Polypropylene
Woofer Surround Santoprene Rubber
Parts Warranty 1 Year
Labor Warranty 1 Year
Specifications
Sensitivity 90 dB at 1 watt
Frequency Response 35 - 21k Hz
RMS Power Range (Watts) 2-50
Peak Power Handling (Watts) 150
Impedance (Ohms) 4
Top-mount Depth (Inches) 2 1/2
Bottom-mount Depth (Inches) N/A
Cutout Diameter or Length (inches) 5 3/16

Product Research

Features

Marine-Ready: The Kicker KM series marine coaxial speakers are engineered to meet or exceed industry standards for environmental humidity and corrosion. The speakers feature sealed motors, cones, and locking wire terminal covers.

Size: The41KM604Ws fit into standard 6-1/2 and 6-3/4 openings (standard car speaker sizes), but the frame is even bigger than a typical 6-3/4 speaker, so they are not likely to fit easily in any car applications.

Grilles: The grilles are not removable.

Stainless Steel Hardware: The provided hardware is forged from corrosion-proof stainless steel.

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team. They verify what’s in the box, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.

Accessories
Q & A

Customer Q&A

Crutchfield asked  
Why did you buy this?

Good reviews and great price. Kicker has always been a durable product. Hoping it adds to the sound quality on my boat. [ Windy  Aug 28, 2017 ]
Reviews & value [ R  Aug 17, 2017 ]
Price [ Michael  Aug 08, 2017 ]
I like kicker [ Cory  Jul 30, 2017 ]
Specs and price. [ Adam  Jul 27, 2017 ]
Customer service. They ROCK!!!!! [ Marvin  Jul 01, 2017 ]
reviews [ Thomas  Jun 26, 2017 ]
good deal [ Colin  Jun 19, 2017 ]
reviews [ Jeffrey  Jun 19, 2017 ]
Good reviews. [ Mitchell  Jun 15, 2017 ]
good brand combined with sale. [ Brian  Jun 13, 2017 ]
These speakers look great, had great reviews and couldn't beat the sale price. [ Kayne  Jun 13, 2017 ]
Reviews and ratings [ Joel  Jun 06, 2017 ]
Kicker name brand [ John David  May 30, 2017 ]
reviews were good [ TOBY  May 17, 2017 ]
Aaron really helped me in the decision. Made me feel confident about the purchase. [ Richard  May 10, 2017 ]
Price. [ Jake  May 04, 2017 ]
Good value, revues and look. [ Daniel  Mar 21, 2017 ]
I read the reviews and it sounded like what I am looking for. [ Ronald L.  Oct 18, 2016 ]
Just took a gamble on these but I couldnt be happier!! Even got a buddy to get a set [ ADAM  Sep 26, 2016 ]
price and low-end frequency response [ Ben  Sep 19, 2016 ]
good bass in reviews [ Matthew  May 08, 2016 ]
Have other kicker products.. Very impressed with sound quality and fit and finish!! [ Gary  May 05, 2016 ]

3 questions already asked

I used 16 gage marine tinned wire. [ Anthony  Oct 06, 2017 ]
You will need to increase the diameter of the opening but you will be very satisfied with the results. I put them in my Bayliner and I can't be happier. [ Brett  May 15, 2017 ]
The cover is 7" in diameter. [ Michael  Oct 26, 2014 ]
i didn't measure. but they fit on my 32' monetery perfecetly. [ mark  Oct 24, 2014 ]
7" [ Jason  Oct 24, 2014 ]
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