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QPower QBOMB12VL Dual 12" Vented Sub Box vs Proline X P12D-P Dual 12" Ported Enclosure

Buy the Proline X if you want a tighter, better-built box tuned for deep output and backed by a warranty. Buy the QPower if you want the most internal air space and a rugged spray finish for a big, boomy build. The QPower is larger and cheaper-feeling in construction, with no written warranty and vague power specs. The Proline X uses CNC-cut joinery, pre-wired 12-gauge OFC wire and a recessed composite terminal cup, and owners of the line report solid build quality.

  • Choose the QPower QBOMB12VL if you want maximum air space (about 4.5 cu ft total) for two 12s and a tough bedliner-sprayed finish.
  • Choose the Proline X P12D-P if you want a precisely tuned, well-joined enclosure with pre-wired internals and a one-year warranty.

Prices

  • QPower QBOMB12VL Dual 12" Vented Sub Box: $79.99 at Amazon (last seen Nov 13)
  • Proline X P12D-P Dual 12" Ported Enclosure: $269.99 at Audio Intensity (last seen Nov 13)
  • Difference: the QPower QBOMB12VL Dual 12" Vented Sub Box is $190.00 cheaper than the Proline X P12D-P Dual 12" Ported Enclosure at the latest prices (Nov 13)
QPower
QPower QBOMB12VL 12 Inch Dual Vented Ported Car Subwoofer Sub Box Enclosure

QPower QBOMB12VL Dual 12" Vented Sub Box

QPower QBOMB12VL 12 Inch Dual Vented Ported Car Subwoofer Sub Box Enclosure

4.2(44 ratings)
$79.99at AmazonChecked 19 h ago
See all prices and details
Visit Amazon

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Pros
  • Large internal volume suits high-output dual 12 setups
  • Durable bedliner spray finish resists scuffs
  • Dual voice coil compatible
  • Wide 32-inch footprint fits many trunks and SUVs
Cons
  • No written warranty
  • Power handling figures are listed as 0 W, so ratings are unclear
  • Standard joinery and terminals
  • Tuned higher, so less deep extension
Proline X
Proline X P12D-P Dual 12" Ported Subwoofer Enclosure V3

Proline X P12D-P Dual 12" Ported Enclosure

Proline X P12D-P Dual 12" Ported Subwoofer Enclosure V3

$269.99at Audio IntensityChecked 15 h ago
See all prices and details
Visit Audio Intensity
Pros
  • Tuned to 36 Hz for deeper low-frequency extension
  • CNC-cut joinery and 3/4 in Langboard MDF
  • Pre-wired 12-gauge OFC with recessed composite terminal cup
  • One-year limited warranty
  • Hand-assembled and inspected in Tennessee
Cons
  • Smaller net volume limits some high-output drivers
  • Shallower 7.125 in mounting depth rules out deep motors
  • No published power ratings

What separates them

QPower QBOMB12VL Dual 12" Vented Sub BoxProline X P12D-P Dual 12" Ported Enclosure
Internal air spaceAbout 4.5 cu ft total (2.25 per sub)2.75 cu ft net total
Tuning frequencyAbout 40 Hz36 Hz
Build joinery0.75 in MDF, standard assemblyCNC-cut V-groove and dado joints
WiringSpring-loaded push terminalsPre-wired 12-gauge OFC, recessed composite cup
WarrantyNo written warranty1-year limited
Mounting depthNot stated; deeper cabinet (14 in)7.125 in max mounting depth
FinishGray bedliner sprayDark gray trunkliner with plush black
Footprint32 W x 13.25 H x 14 D in, 49 lb32 W x 15 H x 15.3 D in

Price history

  • QPower QBOMB12VL Dual 12" Vented Sub Box: lowest $79.99 on Nov 14 at Amazon.

Prices at every store

QPower QBOMB12VL Dual 12" Vented Sub Box

  • The Home DepotNew

    In stock

    $82.99Free shippingChecked 19 h ago
    Visit The Home Depot
  • AmazonNew

    Availability unknown

    As an Amazon Associate, Deal.ai earns from qualifying purchases.

    $79.99Free shippingChecked 19 h ago
    Visit Amazon
  • KARTiTNew

    Availability unknown

    $109.55Checked 18 h ago
    Visit KARTiT
  • eBayNew

    Availability unknownSold by tingdream

    $138.72Checked 18 h ago
    Visit eBay

Store links may earn us a commission.

All 14 stores and price history →

Proline X P12D-P Dual 12" Ported Enclosure

  • Audio IntensityNew

    In stockReturn policy

    $269.99Checked 15 h ago
    Visit Audio Intensity
Prices and history →

Specs compared

SpecQPower QBOMB12VL Dual 12" Vented Sub BoxProline X P12D-P Dual 12" Ported Enclosure
MaterialMedium Density FiberboardLangboard Elite MDF, 3/4" (18mm)
Enclosure TypeVentedSlot-Ported Bass Reflex
FinishDurable Bed Liner SprayDark Gray Trunkliner / Plush Black
size12"—
colorGray—
BrandQPower—
Speaker size12 inches—
Woofer size12 in—
Rms power rating0 W—
Loudspeaker cabinet typeClosed-Back Cabinets—
Number of speakers2—
Assembled product weight49 lb—
Show all 40 specsShow fewer specs
SpecQPower QBOMB12VL Dual 12" Vented Sub BoxProline X P12D-P Dual 12" Ported Enclosure
Peak audio power handling0 W—
Frequency response range47 Hz—
Wireless technologyWireless—
Inputs & outputsSpring Loaded Push Pin Terminals—
Product lineQ-Bomb—
ModelQBOMB12VL—
InstrumentSubwoofer Sub Box—
Color categoryGray—
Has written warrantyNo—

What reviewers say

QPower QBOMB12VL Dual 12" Vented Sub Box

  • 4.2 / 544 ratings

Owners of the QBOMB12VL mostly praise the deep, loud bass and the solid MDF build for the money. Complaints center on the box's bulk and on finish and fit issues.

What people mention
  • Bass outputPraisedOwners say it produces deep, loud bass that fills the cabin.
  • BuildPraisedReviewers call the 0.75-inch MDF construction solid and sturdy.
  • CoatingMixedThe bedliner spray is seen as durable, but some say it arrives rough or uneven.
  • SizeCriticisedBuyers note it is very large and heavy, so measure your space first.

Questions and answers

Which box hits deeper bass?
The Proline X. Its 36 Hz tuning and slot port geometry extend lower than the QPower's roughly 40 Hz tuning.
Which fits bigger subwoofers?
The QPower has more internal air space, about 4.5 cu ft total. The Proline X caps mounting depth at 7.125 in, so check your driver's depth.
Is the Proline X worth stepping up to?
Yes if build quality and warranty matter. The CNC joinery, pre-wired OFC leads and one-year warranty are real advantages over the QPower.
Which is better for a sealed-style tight sound?
Neither; both are ported. The Proline X's lower tuning gives a more controlled deep response, while the QPower's larger volume tends to sound boomier.
Does the QPower come with a warranty?
No written warranty is listed. The Proline X carries a one-year limited warranty.

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More comparisons

  • QPower QBOMB12VL 12 Inch Dual Vented Ported Car Subwoofer Sub Box Enclosure vs NE122P Dual 12" Slot Ported 3/4" MDF Black Carpeted Subwoofer Enclosure
  • Proline X P12D-P Dual 12" Ported Subwoofer Enclosure V3 vs NE122P Dual 12" Slot Ported 3/4" MDF Black Carpeted Subwoofer Enclosure
  • QPower Single Vented Deep Bass MDF Enclosure for 12-Inch Subwoofer vs QPower QBOMB12VL 12 Inch Dual Vented Ported Car Subwoofer Sub Box Enclosure
  • QPower Single Vented Deep Bass MDF Enclosure for 12-Inch Subwoofer vs Proline X P12D-P Dual 12" Ported Subwoofer Enclosure V3

Buying guides that pick them

  • Best ported 12-inch subwoofer enclosures
Speaker Type
Subwoofer
—
Bluetooth5.0—
Ports &Amp; InterfacesSingle (number of ports)—
QuantityDual—
Dual Voice CoilYes—
Depth14''—
Height13.25''—
Width32''—
Frequency Response40 HZ (tuning frequency)—
Vehicle TypeCar—
Ports & InterfacesSpring Loaded Terminals—
Audio HighlightsHigh Quality Spring Loaded Terminals—
Mounting Depth22"e—
Weight49 lbs—
Net volume—2.75 ft³
Tuning frequency—36Hz
Max mounting depth—7.125"
Subwoofer cutout—11.15"
External dimensions—32" W x 15" H x 15.3" D