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Custom Enclosures 12" Round Hole, Long Rear Slot Ported Enclosure

121RP, 121KPRO

4.7

(13 reviews)

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  • 12" Round Hole, Rear Ported Subwoofer Enclosure
  • Mounting depth: 10-3/4"
  • Cutout diameter: 11-1/8"
  • Box volume: 2.70 cubic feet
  • Total port volume: 0.32 cubic feet
  • Dimensions: 15"D x 30-1/4"W x 15"H
  • 30 Day return policy
Speaker Box / Enclosure Specifications
Subwoofer Size12"
Subwoofer Cutout ShapeRound / Circle
Box TypeVented / Ported
Number of Subs/Speakers1
Box Style/ShapeSquare/Rectangle
Cutout Diameter or Length11-1/8"
Maximum Speaker Depth10-1/2"
Total Box Volume2.7 cubic feet
Height15"
Width30-1/4"
Depth15"
Second DepthN/A
Wood Thickness3/4"
Number of Terminals1
Terminal TypeBinding posts (banana clip ready)
Box Exterior ColorBlack
Box FinishCarpet
Port Details
Number of Ports1
Port Diameter13-1/4"
Port Length17"
Warranty and Return Policy
Return Policy Standard Return Policy
Parts Warranty Duration1 year
Labor Warranty Duration1 year
Warranty ProviderManufacturer
Customer Review Summary for Custom Enclosures 12" Round Hole, Long Rear Slot Ported Enclosure
Average Customer Rating is 4.7 out of 5 stars:
4.7
based on 13 Reviews
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Rating Distribution:
5 star:
.
.
77%
4 star:
.
.
15%
3 star:
.
.
8%
2 star:
.
0%
1 star:
.
0%
what's this?
Average Attributes Rating:
Durability
4.8
Value
4.8
Features
4.5
Design
4.6
Usability
4.9
what's this?
Quick Comparison:
Most helpful favorable review vs. Most helpful critical review
Most Helpful Customer Reviews:
August 9, 2010 Best Bass Pounding Box EVER!!
1 of 1 people found the following review helpful:
Review by
Ryan from Vancouver, WA
Overall
Durability
Value
Features
Design
Usability
I have the Hifonics Brutus OLM1612 sub enclosed in this bad boy box and it pounds like no other. Its a very solid box and is true to the dimensions and box volume...I would HIGHLY suggest buying this box to my friends, family or strangers (plus Sonic has the best shipping, was super fast). If you want an all around great looking, great sounding and great performing box...then just click.."+ Add to Cart" button and let the pounding begin!!
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January 4, 2012 12'' Ported Box
Review by
Cobbsy from Hampton, VA
Overall
Durability
Value
Features
Design
Usability
I recenly purchased this box along with the power acoustiq mofo 122x. I tried the mofo in a box i had for two kicker comp 12's, and it didnt sound up to par. When i put it in this box, its like it got 10x louder. And it hits the lows perfect like i wanted. Cant really use my rearview or sideview mirrors.

The box is well built and sturdy. I drive a 99 blazer 2 door btw.
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April 6, 2011 Good Deal
Review by
Main Bull from Kilauea, Hawaii
Overall
Durability
Value
Features
Design
Usability
Used this box for a Fi Bl 12 and it slammed hard. The tuning frequency is around 41-42 hz so the lows arent very loud and the sound quality isnt always the best but its good for a prefab box. Good box if you dont mind that high of a tuning.
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March 27, 2011 Great box
Review by
Christopher from Fort Polk, LA
Overall
Durability
Value
Features
Design
Usability
It a good and quick fix for you subwoofer.
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February 27, 2011 awesome box for the money
Review by
Greg from framingham, MA
Overall
Durability
Value
Features
Design
Usability
I have my Alpine Type R in this and it pounds! I had it in a .8cu ft box I got at bestbuy and it was too small and choked it out, the whole car vibrates now and hits lower notes better, gets those real low ones i love :) only thing I don't like is the port is on the side so its kind of against the trunk, but its far back enough to work so if you have a small car like a civic you just need to measure =]
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View All 13 Reviews for Custom Enclosures 12" Round Hole, Long Rear Slot Ported Enclosure
Amplifier Kits
Complete your system with all the wires you need to properly install and power your amplifier.
 ProductPriceAdd?
0/1 Gauge - Kicker Dual Amp Kit0/1 Gauge - Kicker Dual Amp Kit
Dual amplifier installation kit with distribution blocks designed for systems up to 3000 watts.		$199.99
4 Gauge - StreetWires Amp Kit4 Gauge - StreetWires Amp Kit
4 Gauge (AWG) ZN1 Series Single Amplifier Installation Kit		$37.99
Speaker Wire
This is recommended speaker wire you can choose from that would be best for your subwoofer or speaker set-up. The higher quality of speaker wire used, the better sound you will get from your system.
 ProductPriceAdd?
Kicker Speaker WireKicker Speaker Wire
20 ft of 12 Gauge XW-series speaker wire with twisted pair technology for noise cancellation and bass response.		$24.99
High-Performance Streetwires Speaker WireHigh-Performance Streetwires Speaker Wire
25 ft. of 12 Gauge speaker cable with twisted pair construction for improved power flow and fine-stranded copper windings.		$29.99
Sound Dampening Material
Get the most of your new sound system with high quality sound dampening material. Helps eliminate road noise while keeping your music in the car.
 ProductPriceAdd?
36 ft. of Dynamat Extreme Bulk Pack36 ft. of Dynamat Extreme Bulk Pack
Make your sound system sound perfect by reducing road noise with 9 sheets of sound dampening material.		$149.99
20 ft. of Dynamat Xtreme Trunk Kit20 ft. of Dynamat Xtreme Trunk Kit
Keep your trunk from rattling and improve bass quality by using a sound dampening trunk kit.		$94.99
Dynamat Dynaxorb for SpeakersDynamat Dynaxorb for Speakers
Waterproof sound dampening material designed specifically to prevent distortion by the back wave of a speaker interfering with the front wave.		$19.99
Enclosure Accessories
Everything you need to install your subwoofer. From quick disconnects to polyfil, whatever you need will be here.
 ProductPriceAdd?
Banana Clip TerminalsBanana Clip Terminals
These high grade banana clips allow you to plug into your banana clip ready terminal for a secure connection.		$4.99
Insulated Female Quick Disconnect ConnectorsInsulated Female Quick Disconnect Connectors
100 pack of 12-10 Gauge yellow insulated quick disconnects.		$6.99
20 oz. Bag of Poly-Fil20 oz. Bag of Poly-Fil
Polyester fiber fiberfill adds better bass to your system.		$5.99
16 oz. Can of Adhesive Spray16 oz. Can of Adhesive Spray
Spray adhesive used for adhering carpet to subwoofer boxes without bubbles or can be used for your polyfil.		$5.99
Main Product
 ProductPriceAdd?
Custom Enclosures 121KPROCustom Enclosures 12" Round Hole, Long Rear Slot Ported Enclosure$49.99

Product Summary

Manufacturer: Custom Enclosures
Model number: 121KPRO
Weight: 51.00 lbs
Internal SKU: 121kpro
Internal product ID: 14600

Price Information

$129.99

–$80.00

$49.99

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