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Harmony Audio

Harmony Audio Kicker Down-Firing 12" Thin Sub Box with Amp 47TRTP122

Based on 82 reviews
Condition: New
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$385.99
Holiday Deal · 30% off was $549.99

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This item's return window has been extended for the holiday season: Returnable until Jan 31, 2027

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Availability: Only 9 left in stock, order soon!
Fulfilled by HiFi-Soundconnection
Arrives Monday, Nov 23
Order within 1 hour and 56 minutes

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At a glance

Condition
New
Model
47TRTP122
Dimensions
15"D x 28"W x 12"H
Weight
39.5 lb
Color
black
Frequency Response
180 hertz
Audio Output Mode
Mono, Stereo
Works with
Laptop, MP3 Player, Smartphone

Features 3

  • Harmony Audio HA-A400.1 Car Stereo Class D Amp Mono 800 Watt Subwoofer Amplifier
  • Alloy Series Mono - 1 Channel Class D Amplifier
  • Frequency Response: 10Hz-180Hz

Description

This Package Includes the Following Items:1 x Harmony Audio HA-A400.1 Car Stereo Class D Amp Mono 800 Watt Subwoofer Amplifier - 1 Ohm Stable - Includes Bass Remote1 x Kicker 47TRTP122 Car Audio Down Firing 12" Thin Sub Box w/ Passive Radiator New1 x Harmony Audio HA-AK8 Car Stereo Complete 8 Gauge 900W Amp Amplifier Install Kit - NickelHarmony Audio HA-A400.1 Car Stereo Class D Amp Mono 800 Watt Subwoofer Amplifier - 1 Ohm Stable - Includes Bass Remote:Specifications:Power Handling: 14.4V @ 1 Ohm 400 Watts RMS x 1 800 Watts PEAK x 114.4V @ 2 Ohm 300 Watts RMS x 1600 Watts PEAK x 1Frequency Response: 10Hz-180HzSignal to Noise Ratio: 95dB, A-weightedTurn On: DC Offset or 12V RemoteDimensions: 9-3/16" Width x 6-1/8" Width x 2" HeightFeatures:Includes Remote Bass Control Knob with Power Indicator LEDIncludes HA-EASY Speaker Wire to RCA Adapter to Simplify Installation Kicker 47TRTP122 Car Audio Down Firing 12" Thin Sub Box w/ Passive Radiator New:Features:Enclosure Type: Compact CompRT Loaded Power Handling500 Watts RMS1000 Watts PEAKWoofer Size: Single 12" with a Passive 12" Radiator Impedance: 2 Ohm (Final)Sensitivity: 98 dBDimensions27-1/2" Width14-5/8" Depth6-1/8" HeightTough MDF Construction with Black Carpet Harmony Audio HA- AK8 Car Stereo Complete 8 Gauge 900W Amp Amplifier Install Kit - Nickel

Specs 39

Brand Harmony Audio
Speaker Maximum Output Power 1000 watts
Frequency Response 180 hertz
Connectivity Technology RCA
Audio Output Mode Mono, Stereo
Mounting Type Car Mount
Enclosure Material mdf
Speaker Type Subwoofer, Woofer

Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, Nov 23

Yes, absolutely! This item's return window has been extended for the holiday season: Returnable until Jan 31, 2027.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • Zip Pay in 4
  • Financing through Apple Pay
  • Financing through Google Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

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Top Amazon Reviews

It’s great ! A lot of bass comes with knob too!!
Yes it is well worth the 385 although this amp will only let this sub go to 85 of its potential. Although it sound great I’m gonna eventually upgrade to the kicker 800.1 amp. The wire kit is not OFC so I used the kicker 8guage 22’ kit. Don’t use the non OFC. But still a bargain and great amp! Chris in Florida. ... show more
Reviewed in the United States on September 7, 2026 by Ihop Florida
Great speakers, amp is good but decided to upgrade to the kicker amp and wow what a difference
Hit harder than expected, I did upgrade the amp to the kicker amp. It does make a difference
Reviewed in the United States on March 12, 2026 by ryan
Good sound
Sounds great good quality for your money. Should buy a better wiring kit though like I did. Wire was alittle thinner than I was comfortable with
Reviewed in the United States on July 30, 2025 by Outlawpolecat81
Good value for the money
I installed this kit in my 2011 Ford F-150. This is a good kit for the price. Kicker sub sounds amazing and amp has enough juice to power it. There should be a 4-gauge power and ground wire in stead of the 8, but even still, def worth the money. I will upgrade my power and ground at a later time.
Reviewed in the United States on July 12, 2022 by albaker03
Easy install
I was surprised how well this thing hits! I’ve been out of the subs game for awhile so I wasn’t sure what would be the best route to take, I’m very pleased with the sub and amp. I was first worried about the size of amp, but it does the job quite well. Can’t wait to pair it up with all the door speakers. I also did not need to run a remote wire as the dongle I got recognizes the power to the amp through the rca cables ... show more
Reviewed in the United States on March 14, 2025 by Jeremy k.
Not sure
Can’t really give a true answer. It wouldn’t work for my purpose. Just wanted to clear it off of my reviews on Amazon
Reviewed in the United States on August 3, 2025 by Amazon Customer
no remote wire needed for the amp if your using the hi level hook ups
Easy to hook up. The amp turns on by just the speaker wires being hooked up so no remote wire needed. great sounding.
Reviewed in the United States on May 21, 2025 by Carolyn Limmer
Needs better wiring instructions
Love sound and price! Needed better instructions
Reviewed in the United States on July 29, 2022 by Travis L.
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