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Kicker  47KBRW12

12" ReFLEX™ Passive Radiator

Item #56063

Condition:   Brand New

Product Highlights

  • 12" size
  • ReFLEX™ technology
  • Passive radiator

  Free 2-Years Warranty Included!
60 DAYS Returns Accepted.
FREE Lifetime Tech Support.
FREE Shipping.
60 DAYS Price change protection.

$69.99

Reg. Price $79.99  Save 13%
  Free 2-Years Warranty Included!
60 DAYS Returns Accepted.
FREE Lifetime Tech Support.
FREE Shipping.
60 DAYS Price change protection.

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Kicker 47KBRW12 12" ReFLEX™ Passive Radiator


Kicker Authorized Dealer Stamp

We are a Kicker authorized dealer so you get up-to-date, fully warrantied products. Shipping is free to the lower 48 states on everything you order!

What's Inside?
  • • 12" Passive Radiator
  • • (4) Adhesive backed screw covers
  • • Owner's Manual

 


Why Choose Kicker 47KBRW12 Subwoofer Accessory?


 

Kicker 47KBRW10 Subwoofer Accessory Rear View
Big 12-Inch Bass In Small Boxes

Get massive low-end extension without sacrificing cargo space with the Kicker 47KBRW12 12-Inch Round Bass Reflex Passive Radiator. Tuning down to a deep 34 Hz, a single radiator paired with an active 12-inch sub requires just 0.7 cubic feet of airspace, letting you build compact, space-saving enclosures for tight vehicle setups.

Durable All-Weather Build

Built to handle heavy excursion, this driver features Kicker’s signature double stitching around the cone edge and a patented ribbed surround for precise control. It is completely all-weather rated to withstand extreme temperatures, moisture, and dust for long-lasting, relentless performance.

 

Kicker 47KBRW10 Subwoofer Accessory Top View
Kicker 47KBRW10 Subwoofer Accessory Front View
Optimized For Shallow Subs

YEngineered to work seamlessly with slim subwoofers designed for micro-enclosures, Kicker specifically recommends pairing this radiator with their CompRT series. Together, they create a high-output, low-profile bass system that delivers the rumble of a ported box with zero port noise.

 


Frequently Asked Questions (FAQ)


  • • What is the purpose of a passive radiator in a subwoofer enclosure?
    A passive radiator extends low-frequency response without requiring a traditional port. It helps deliver deeper bass while minimizing port noise in compact enclosure designs.
  • • Why isn't the passive radiator moving very much during playback?
    Its movement depends on the enclosure tuning, amplifier output, and the active subwoofer's performance. Limited movement at moderate listening levels is completely normal.
  • • Can I install this in any subwoofer enclosure?
    No. It should only be installed in an enclosure specifically designed and tuned for a passive radiator system.
  • • Why does the bass sound weaker after installing it?
    An enclosure with incorrect internal volume or tuning can reduce low-frequency performance. Verify the enclosure design matches the recommended specifications.
  • • Does this produce sound on its own?
    No. A passive radiator works together with an active powered subwoofer and does not generate sound independently.
  • • Why do I hear rattling from the enclosure during heavy bass?
    Loose mounting hardware, enclosure vibrations, or air leaks are common causes. Tighten all fasteners and inspect the enclosure for gaps or loose panels.
  • • Can I change the bass tuning after installation?
    Yes. Some passive radiator systems allow tuning adjustments by modifying the moving mass according to the manufacturer's recommendations.
  • • Why does the radiator bottom out during loud bass notes?
    Too much amplifier power or an improperly tuned enclosure can cause excessive excursion. Reduce the output level and verify the enclosure meets the recommended design.
  • • Is a passive radiator better than a ported enclosure?
    Each design has different advantages depending on your available space and bass goals. Passive radiators are often chosen for compact enclosures that require deep low-frequency performance.
  • • Why do I hear air leaks or whooshing noises from the box?
    Air leaks around the enclosure or mounting surface are usually the cause rather than the passive radiator itself. Check all seals and mounting screws to ensure the enclosure is airtight.

SPECIFICATIONS



FEATURES


Features:

  • Component ReFLEX™ Passive Radiator for intense bass
  • Created for custom enclosures
  • Requires very small box and no port needed
  • Active subwoofer required
  • UPC: 713034013310
  • Weight: 1.3
  • Authorized Internet Dealer
Warranty: 2 Year(s) Warranty.
This item is accompanied by a manufacturer's warranty. If it is found to be defective, it may be returned to OnlineCarstereo.com for replacement within 2 Year(s) from the original date of purchase with proper return authorization.

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