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Rockville W12K9D2 V3 12" K9 V3 4000w Peak/1000w RMS Car Subwoofer DVC 2-Ohm Sub

4.5 4.5 out of 5 stars 2,382 ratings
$139.95
12 Inch

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Purchase options and add-ons

Brand Rockville
Model Name W12K9D2
Speaker Type Surround Sound, Subwoofer, Woofer
Connectivity Technology Wired
Special Feature Shockproof

About this item

  • Rockville W12K9D2 V3 K9 Series 12" Dual 2-Ohm Car Subwoofer. Peak Power Handling: 4000 Watts. Program Power Handling: 2000 Watts . RMS Power Handling: 1000 Watts . Ultra-stiff Non-Pressed Paper Punisher Cone. Ultra-stiff Polypropylene Punisher Dustcap (The K9 V3 now uses the same dustcap as our Punisher series). We added an inner dustcap which helps to avoid hot air build-up in the voice coils resulting in more power handling.
  • More efficient air ventilation cools the voice coil even better than our V2. We added a voice coil spacer improving longevity during test tones or extreme bass-heavy songs. 3" 4-Layer Black Aluminum Former Wound with OFC Wire Made in USA. This voice coil is stable up to 240 degrees celcius! The voice coil windings are made in the USA!. Double Stacked 190 Oz High Quality Magnet.
  • Cast Aluminum Basket With Black Sanded Finish Makes This Sub Very Efficient And Lighter Weight. Two Chrome-Plated Binding Post Terminals . Black Non-Pressed Paper Cone With Beautiful Finish. Our cones are ultra-stiff. They are thicker and stronger than other subs on the market making our subs able to handle more power.. Thick Foam Surround Provides Incredible Sound Quality With Minimal Distortion.
  • Red Stitching Cone Reinforcement Ensures Long Life. New Ultra-stiff PolyPropylene (PP) Dustcap. Impedance: Dual 2-Ohm Voice Coils. Vented Hole on T-yoke Enhances Heat Dissipation. Special Custom Rubber Boot Magnet Covers Make the Woofer Look Nice and Protects the Magnet. Custom Rockville Mounting Gasket Looks Beautiful and Makes it Easy To Mount the Subwoofer Air-Tight. High BL Magnetic Motor Gap.
  • We use high grade glue that handles extremely high temperatures which allows our woofer to handle even more power than they are rated. Nomex Spider provides tear resistance, strength and long-term reliability over regular cotton and poly cotton spiders. Cutout Diameter: 11.13” inches. Mounting Depth: 6.85” inches. Frequency Response: 33 Hz - 1.5K kHz. 10mm T-Yoke + 10mm Washer. Sensitivity: 83dB.

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Top Brand: Rockville

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From the manufacturer

Rockville W12K9D2 v3 12" 4000 Watt Peak / 1000w RMS Dual 2-Ohm Car Subwoofer

W12K9D2

The Rockville K9 series has been our best selling series of subs and it just got even better! Say hello to the K9 V3. This sub is a game changer. We improved the performance and cooling like crazy!

1. The dustcap was upgraded to the same one we use in our Punisher series. It is top of the line. Sure it increased our cost but we kept the low price the same!

2. We added an inner dustcap that stops heat from building up in the voice coil. We also made our pole vent smaller. The combination of these 2 changes keeps the voice coil significantly cooler when you are playing bass heavy songs or test tones.

3. We added a voice coil spacer that vastly improves the performance.

4. The cone has a smooth finish that allows the dustcap to be glued on more securely.

Features of W12K9D2 V3:

  • Rockville W12K9D2 V3 K9 Series 12" Dual 2-Ohm Car Subwoofer
  • Peak Power Handling: 4000 Watts
  • Program Power Handling: 2000 Watts
  • RMS Power Handling: 1000 Watts
  • Ultra-stiff Non-Pressed Paper Punisher Cone
  • Ultra-stiff Polypropylene Punisher Dustcap (The K9 V3 now uses the same dustcap as our Punisher series)
  • We added an inner dustcap which helps to avoid hot air build-up in the voice coils resulting in more power handling
  • More efficient air ventilation cools the voice coil even better than our V2
  • We added a voice coil spacer improving longevity during test tones or extreme bass-heavy songs
  • 3" 4-Layer Black Aluminum Former Wound with OFC Wire Made in USA
  • This voice coil is stable up to 240 degrees celcius! The voice coil windings are made in the USA!
  • Double Stacked 190 Oz High Quality Magnet
  • Cast Aluminum Basket With Black Sanded Finish Makes This Sub Very Efficient And Lighter Weight
  • Two Chrome-Plated Binding Post Terminals
  • Black Non-Pressed Paper Cone With Beautiful Finish
  • Our cones are ultra-stiff. They are thicker and stronger than other subs on the market making our subs able to handle more power.
  • Thick Foam Surround Provides Incredible Sound Quality With Minimal Distortion

  • Red Stitching Cone Reinforcement Ensures Long Life
  • New Ultra-stiff PolyPropylene (PP) Dustcap
  • Impedance: Dual 2-Ohm Voice Coils
  • Vented Hole on T-yoke Enhances Heat Dissipation
  • Special Custom Rubber Boot Magnet Covers Make the Woofer Look Nice and Protects the Magnet
  • Custom Rockville Mounting Gasket Looks Beautiful and Makes it Easy To Mount the Subwoofer Air-Tight
  • High BL Magnetic Motor Gap
  • We use high grade glue that handles extremely high temperatures which allows our woofer to handle even more power than they are rated
  • Nomex Spider provides tear resistance, strength and long-term reliability over regular cotton and poly cotton spiders
  • Cutout Diameter: 11.13” inches
  • Mounting Depth: 6.85” inches
  • Frequency Response: 33 Hz - 1.5K kHz
  • 10mm T-Yoke + 10mm Washer
  • Sensitivity: 83dB
  • Sealed Enclosure Volume: 0.9 – 1.47 Cubic Feet
  • Vented/Ported Enclosure Volume: 1.8 – 2.75 Cubic Feet
  • XMAX is 28MM
  • Weight: 28.67 Lbs.
  • Shipping Weight: 33 Lbs.
  • Shipping Box Dimensions: 14.57" x 14.57" x 10.83" Inches
  • XMAX: 28MM

Detailed Info:

  • Body: Non-Pressed Paper
  • Gap Plate Inside Diameter: 95mm (3.74 inches)
  • Gap Plate Outside Diameter: 190mm (7.5 inches)
  • Gap Plate Thickness: 25mm (1 inch)
  • Yoke Outside Diameter: 180mm (7.1 inches)
  • Yoke Thickness: 10mm (0.4 inches)
  • Yoke Pole Diameter: 75mm (3 inches)

TS Parameters:

Series Parallel Fs 34.42 Hz 34.42 Hz Qms 7.88 8.10 Cms 0.0727 mm/N 0.0727 mm/N Bl 18.56 N/A 9.16 N/A Zmin 5.77 O 1.43 O Re 4.20 O 1.20 O Qes 0.78 0.91 Mms 294.2146 g 294.2146 g dBspl 84.07 83.37 L1kHz 4.76 mH 1.18 mH Sd 548.0133 cm² 548.0548 cm² Qts 0.71 0.82 Rms 8.07 Om 7.85 Om VAS 30.4676 L / 1.08 cu ft 30.4723 L / 1.08 cu ft L10kHz 1.82 mH 0.45 mH

What's in the box

  • 1

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    Price$139.95$274.90$82.95$119.87$299.95$59.99
    Delivery
    Get it May 6 - 7
    Get it May 6 - 7
    Get it as soon as Friday, May 3
    Get it as soon as Monday, May 6
    —
    Get it as soon as Tuesday, Apr 30
    Customer Ratings
    4.54.5 out of 5 stars2,382
    4.54.5 out of 5 stars9
    4.64.6 out of 5 stars396
    4.54.5 out of 5 stars114
    4.44.4 out of 5 stars160
    4.34.3 out of 5 stars392
    Value for money
    4.5
    —
    4.4
    4.6
    4.6
    4.0
    Sound quality
    4.5
    —
    4.4
    4.4
    4.6
    4.1
    Easy to install
    4.8
    —
    4.6
    4.6
    4.5
    —
    Quality of material
    4.5
    —
    4.2
    —
    4.4
    3.6
    Sold By
    Audiosavings
    Audiosavings
    Amazing Dealzzz
    HYANKA
    Audiosavings
    Spreetail
    speaker size
    12 inches
    12 inches
    12 inches
    12 inches
    12 inches
    12 inches
    power source
    Corded Electric
    Corded Electric
    Corded Electric
    Battery Powered
    Corded Electric
    Corded Electric
    connectivity tech
    Wired
    Optical
    Coaxial
    12 Inch Subwoofer
    wired
    —
    speaker type
    Subwoofer, Woofer, Surround Sound
    Woofer, Surround Sound
    Subwoofer, Surround Sound
    Subwoofer
    Subwoofer
    Subwoofer
    mounting type
    Car Mount
    Car Mount
    Car Mount
    Car Mount
    Car Mount
    Tabletop
    weight
    28.67 pounds
    —
    14.42 pounds
    —
    54 pounds
    0 pounds
    control method
    voice
    —
    voice
    voice
    voice
    —

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    Product Warranty: For warranty information about this product, please click here

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    Rockville

    Rockville W12K9D2 V3 12" K9 V3 4000w Peak/1000w RMS Car Subwoofer DVC 2-Ohm Sub

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    Product Description

    The Rockville K9 series has been our best selling series of subs and it just got even better! Say hello to the K9 V3. This sub is a game changer. We improved the performance and cooling like crazy! Our engineers did some minor tweaks that give major results for bassheads who like to abuse subs! Weather you are an every day user or someone who pushes the limits of your equipment the K9 V3 is for you! We made the following upgrades that will keep the voice coil cooler improving the subs ability to take constant abuse. 1. The dustcap was upgraded to the same one we use in our Punisher series. It is top of the line. Sure it increased our cost but we kept the low price the same! 2. We added an inner dustcap that stops heat from building up in the voice coil. We also made our pole vent smaller. The combination of these 2 changes keeps the voice coil significantly cooler when you are playing bass heavy songs or test tones. 3. We added a voice coil spacer that vastly improves the performance. 4. The cone has a smooth finish that allows the dustcap to be glued on more securely.

    Customer reviews

    4.5 out of 5 stars
    4.5 out of 5
    2,382 global ratings

    Customers say

    Customers like the performance, power, and sound quality of the subwoofer. For example, they mention it works well, has good power handling, and has excellent sound. They appreciate the appearance, value, hit resistance, and quality. Opinions are mixed on fit.

    AI-generated from the text of customer reviews

    298 customers mention271 positive27 negative

    Customers are satisfied with the sound quality of the speakers. They mention that it has excellent sound, great bass in a small subwoofer, and a very good speaker. The high note hits good from about 70 HTZ and down to about 25 HTZ. It is comparable to any other big brand name, and is their pick for sound and power handling. The low frequency rumble is amazing, and it provides the deep boom you want out of a 15 inch sub.

    "...this set up sounds nice it hits very low I have to say am impressed how it sounds.. some of my friends that have 2 12’s in there trunk couldn’t..." Read more

    "These subs pound out the bass. Extremely happy with the sound" Read more

    "...I have it in a sealed box and all in all this will provide the deep boom you want out of a 15 inch sub, at an affordable price...." Read more

    "...that literally is just big enough to fit in barley and it still sounds really good and handles the power easy ...Im sold....I just bought another..." Read more

    265 customers mention253 positive12 negative

    Customers are satisfied with the value of the speakers. They mention it's a great speaker for the price, great for a budget build, and worth every penny. Some say the subwoofer is incredible and worth the wait.

    "...cheater amp and this monster subwoofer ..5 stars for this speaker good price and well built speaker and very very fast shipping Update 2021 I ended..." Read more

    "...more money on dampening than I did on the speakers they're well worth the price" Read more

    "...will provide the deep boom you want out of a 15 inch sub, at an affordable price...." Read more

    "Great subwoofer. Very heavy magnet and well made!" Read more

    124 customers mention116 positive8 negative

    Customers are satisfied with the quality of the speakers. For example, they mention it's well-made, built like a tank, and outstanding. Some say that the speakers hold up well with regular music and 4K watt apps.

    "...this monster subwoofer ..5 stars for this speaker good price and well built speaker and very very fast shipping Update 2021 I ended up buying a..." Read more

    "...All of them pointed to the quality materials and construction but warned about running these too hard. My setup appears to be a good sweet spot...." Read more

    "Great subwoofer. Very heavy magnet and well made!" Read more

    "...Good high and better low bass. Paired it with a 1200W SKAR. Good quality and great sound, would recommend a ported box." Read more

    41 customers mention41 positive0 negative

    Customers are satisfied with the speaker's hit resistance. They mention that it hits really hard, and it bangs super hard. Some say that the subs pull a lot of power from their battery. Overall, most are happy with the performance of the speakers.

    "This sub is incredible. Hits hard & low." Read more

    "...Now they are hitting hard and sound amazing." Read more

    "...I put it in a 0.6 sealed box and on 335 watts rms this is hits very hard! low and deep...." Read more

    "Hits hard" Read more

    35 customers mention30 positive5 negative

    Customers like the power of the speakers. They mention it's surprisingly powerful, has good power handling, and is a powerful little subwoofer. Some say it has the power and quality of subs that cost 2 to 3 times as much.

    "...enough to fit in barley and it still sounds really good and handles the power easy ...Im sold....I just bought another one to put in my other car.." Read more

    "...Running it with a D class Alpine Vpower 750watt max amp and performs very well." Read more

    "...So overall the performance is outstanding...." Read more

    "...This little sub packs quite a punch. For my needs, this is enough bass. The sound is great. Highly recommended." Read more

    27 customers mention27 positive0 negative

    Customers are satisfied with the appearance of the speakers. They mention that it works well, looks good, and impresses in all the right ways. They appreciate the sub's warmth, thickness, and sheer essence. They also say the sound it produces is amazing and the clarity is amazing.

    "...This sub impresses in all the right ways...." Read more

    "...but the speakers I got are phenomenal they sound great big look awesome in my truck and I'm just super duper happy with them." Read more

    "...box with a JL audio amp and this sub rattles my entire truck and it very clear. The sub hits all the notes perfectly...." Read more

    "...The bass this sub produces is very clean and crisp...." Read more

    24 customers mention18 positive6 negative

    Customers like the performance of the speakers. They say it works well for subwoofer replacement, and pairs well with door speakers. Some mention it works great with any sort of music genre. Overall, most are satisfied with the performance and recommend it to others.

    "...speaker and trust me that’s plenty for one 10 inch this setup hits good in every music I throw at it ..I never owned 10 inch speakers I always went..." Read more

    "...The sub hits all the notes perfectly. It pairs with my door speakers very well and everything sounds amazing I have it in a 96 ram and it sounds..." Read more

    "...have reviewed this appropriately but I couldn't since the speaker didn't actually work. A dang shame." Read more

    "Didn’t take too long to ship they work great" Read more

    33 customers mention18 positive15 negative

    Customers are mixed about the fit of the speakers. Some mention that it fits well in their little truck, while others say that it barely fits in the enclosure.

    "Compliance curve is sweet. Excursion is good. Fit and finish is excellent. Needs break in. QTS is off...." Read more

    "...Does not withstand high volumes well.The size and holes are not standard, and I have to modify the 8" wakeboard tower enclosures, I have to..." Read more

    "I love how it sounds and it fits my box like a glove, so I’m definitely gonna recommend it to my friends." Read more

    "I purchased this sub because, unfortunately, the Punisher wouldn't fit behind the seat of my dodge with a proper box, however I am not..." Read more

    Kind of heavy, sound great
    5 Stars
    Kind of heavy, sound great
    I put 2 12s in a homemade box in the trunk of my 15 Charger Pursuit. Good high and better low bass. Paired it with a 1200W SKAR. Good quality and great sound, would recommend a ported box.
    Hide
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    Top reviews from the United States

    Kiko33
    5.0 out of 5 stars Very very impressed ...and fast shipping 👍🏼👍🏼
    Reviewed in the United States on May 20, 2020
    Size: 10 InchStyle: 10” K9 Series 4 OhmVerified Purchase
    I have too say am very impressed!! I’ve had in the pass 2 kickers L7 also 2 12 JL ‘s I’ve own plenty of 12 inch speakers with plenty of cheater amps I’ve Ben around the block as I’ve right now I still have a few cheater amps put away i still have 1 kicker ZR1000 and a ZR600 also a few ADS amps ..I own a Audi b8.5 I didn’t want to put 2 12’s in my trunk this time I wanted to upgrade the factory 10 inch subwoofer and a separate amp just for the 10 inch sub.. so I bought this 10 inch and I installed it where the factory sub was on the back top wow it almost didn’t fit I didn’t realize it was tall but it did.. I also sealed everything back there I used my alpine cheater amp as it’s only one Chanel And small amp it’s pushing 700 watts perfect for the speaker..the speaker i got was 10K9D4 4ohms wired to 2 ohms . this set up sounds nice it hits very low I have to say am impressed how it sounds.. some of my friends that have 2 12’s in there trunk couldn’t believe I was pushing 1 10 inch.. anyone reading this that don’t know to much about stereo systems keep in mind that a good brand amp comes a long way and keep in mind I have 4 cheater amps one of my amps is a true rms 1000 watt and I didn’t install that because it’s only 1 10 inch subwoofer and the most I’ll give this speaker is 600 to 700 watts Without blowing the speaker and trust me that’s plenty for one 10 inch this setup hits good in every music I throw at it ..I never owned 10 inch speakers I always went with 2 12inch ..now if I bought 2 of these speakers then I would of used my ZR600 cheater amp I still wouldn’t use the ZR1000 I would only use my ZR1000 if I had two 12’s my point is u don’t need to use a kicker ZR1000 cheater amp on 1 10 inch subwoofer u will blow this speaker ..I don’t understand y companies say 3000 watts on a speaker when true rms is 600 watts it confuses the newbies.. hope this helps someone That doesn’t know to much ..agin for the price of this speaker u can beat it ..I went with speaker because I didn’t want a box in my trunk o I forgot to mention I had a 10 inch kicker 8 ohm speaker with the factor amp before I installed my alpine cheater amp and this monster subwoofer ..5 stars for this speaker good price and well built speaker and very very fast shipping Update 2021 I ended up buying a second one these speakers with a good amp pounds I only had 1 at first I replaced the factory 10 inch to this speaker and I sounds like I have 2 12 inch subs in my car every one that hears it can’t believe the setup I have it hits nice I bought a nother one that’s how good these speakers are I have no complaint I can’t believe how well made these speakers are for the price . And the package is very well packaged for delivery..
    11 people found this helpful
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    william
    5.0 out of 5 stars Good bass
    Reviewed in the United States on April 11, 2024
    Size: 12 InchStyle: 12" K6 Series 4 OhmVerified Purchase
    These subs drop. Hope you have an amp that can handle them they hit so hard. I spent more money on dampening than I did on the speakers they're well worth the price
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    Doug Ward
    5.0 out of 5 stars Awesome
    Reviewed in the United States on April 16, 2024
    Size: 8 InchStyle: 8” K9 Series 4 OhmVerified Purchase
    These subs pound out the bass. Extremely happy with the sound
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    Amazon Customer
    4.0 out of 5 stars Great value, just the right boom
    Reviewed in the United States on September 15, 2019
    Size: 15 InchStyle: 15” K9 Series 4 OhmVerified Purchase
    I bought this 15 inch sub to replace what is now two different blown subs. Each of the previous ones had slightly different musical qualities to them and I had had the first one for over 25 years, so was really accustomed to how it sounded. This sub impresses in all the right ways. I have it powered with a Rockford Fosgate amp that produces 300W RMS @ 2ohm which is more than enough to get this bumping hard. I studied a lot of reviews before buying. All of them pointed to the quality materials and construction but warned about running these too hard. My setup appears to be a good sweet spot. Running it on the lower power end like I am easily explains the weaker hit at the extremes of the dynamic range, which could likely be improved with a tuned enclosure but I have no complaints and dont intend to change anything. I have it in a sealed box and all in all this will provide the deep boom you want out of a 15 inch sub, at an affordable price. I can easily overpower the rest of my system with bass notes if I turn this up. And I enjoy the sound it provides in all types of music from classical (the cannons in the 1812 overture) to the old western classics of Hank Sr and the boomy rap rock/metal I love. And it's shaking the heck out of my F150 super cab! I might need to track down and try to dampen out a few new rattles!
    2 people found this helpful
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    Great subwoofer..very heavy magnet and well made
    5.0 out of 5 stars Rockville kicks!
    Reviewed in the United States on April 16, 2024
    Size: 12 InchStyle: 12" K6 Series 4 OhmVerified Purchase
    Great subwoofer. Very heavy magnet and well made!
    One person found this helpful
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    Basshead
    5.0 out of 5 stars Awesome subwoofer
    Reviewed in the United States on February 6, 2024
    Size: 10 InchStyle: 10” K9 Series 2 OhmVerified Purchase
    This sub is incredible. Hits hard & low.
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    Does not work like you see on TV.
    5.0 out of 5 stars Very happy
    Reviewed in the United States on March 2, 2024
    Size: 12 InchStyle: 12" K6 Series 4 OhmVerified Purchase
    Definitely happy with this woofer..I was kinda skeptic but Im not any more...I put it in a box that literally is just big enough to fit in barley and it still sounds really good and handles the power easy ...Im sold....I just bought another one to put in my other car..
    One person found this helpful
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    jarrod bradley
    5.0 out of 5 stars Pretty good deal.
    Reviewed in the United States on January 18, 2024
    Size: 8 InchStyle: 8” K6 Series 4 OhmVerified Purchase
    Excellent sound. Running it with a D class Alpine Vpower 750watt max amp and performs very well.
    2 people found this helpful
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    Top reviews from other countries

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    christopher
    4.0 out of 5 stars Perfecto por el precio
    Reviewed in Mexico on October 1, 2023
    Size: 8 InchStyle: 8” K6 Series 2 OhmVerified Purchase
    Buena calidad, bajos considerables por el tamaño, buena construcción, lo movia com un taramps ts440x4 en bridge, alrededor de 350 rms y tenia que bajar la ganancia porque sobre excursionaba, pero por el precio esta bien, recomiendo alimentarlo con menos de 350 rms, con 300 rms se movería bien.
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    christopher
    4.0 out of 5 stars Perfecto por el precio
    Reviewed in Mexico on October 1, 2023
    Buena calidad, bajos considerables por el tamaño, buena construcción, lo movia com un taramps ts440x4 en bridge, alrededor de 350 rms y tenia que bajar la ganancia porque sobre excursionaba, pero por el precio esta bien, recomiendo alimentarlo con menos de 350 rms, con 300 rms se movería bien.
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    Cliff Brethour
    5.0 out of 5 stars Very good subwoofer
    Reviewed in Canada on March 19, 2023
    Size: 15 InchStyle: 15” K9 Series 4 OhmVerified Purchase
    I have 1000 Watts RMS going to the sub and it sounds amazing!! Tight accurate bass that makes my eyes bounce with The Beat.
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    Jimmie
    5.0 out of 5 stars Very well built and good price ,
    Reviewed in Canada on February 22, 2021
    Size: 10 InchStyle: 10” K6 Series 4 OhmVerified Purchase
    I have only rated the sound at four stars because I have not put full power though it yet , sounds great to me I mounted it a 1950 Coke cooler and have in the trunk of my 1966 Galaxie and it gives all the bass I need .jimmie
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    easybuy
    5.0 out of 5 stars hard to believe that much sound can come from a 10" sub
    Reviewed in Canada on February 13, 2020
    Size: 10 InchStyle: 10” K9 Series 2 OhmVerified Purchase
    been installed more than a month now and pounding the car silly, i get comments saying i have other subs hiding, it hard to believe the base this provides from a 10" sub woofer!
    One person found this helpful
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    BRANZA IULIAN
    5.0 out of 5 stars I have never expected such good quality of the sound and fabrication! Excellent product!
    Reviewed in Australia on June 7, 2022
    Size: 6.5 InchStyle: 6.5” K9 Series 2 OhmVerified Purchase
    The media could not be loaded.
     I have never expected such good quality of the sound and fabrication! Excellent product! I was about to buy the DS18 version, but this one has better characteristics. When building the box, the reflex tube must be calculated for a very high air compression. thank you!
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