What amplifier power does this subwoofer need?

It is rated 350 watts RMS, so pair it with an amp that delivers roughly that much clean power at the impedance you wire it to. A weaker amp will not get the most from it, and clipping can damage the coil.

How do I wire the dual 4-ohm voice coils?

Wiring the coils in parallel gives a 2-ohm load; wiring them in series gives 8 ohms. Choose based on what your amplifier is stable at.

What size enclosure does an 8-inch sub like this need?

It is built for compact boxes, and a small sealed enclosure gives the tightest response. A small ported box adds output but needs more space and careful tuning.

Is this a good upgrade over a stock car stereo?

Yes, if you add a dedicated amplifier. A factory head unit alone will not drive it, but with proper power it adds noticeably deeper bass than door speakers.

What is included with the subwoofer?

The driver comes with dual chrome-plated binding posts, a rubber magnet boot cover and a mounting gasket. An enclosure and amplifier are not included.

Rockville W8K6D4 V2 8-Inch 1400W Peak / 350 RMS Car Audio Subwoofer Dual 4-Ohm

Best price now

$64.95at WalmartChecked Nov 8

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Rockville W8K6D4 V2 8-Inch 1400W Peak / 350 RMS Car Audio Subwoofer Dual 4-Ohm

Best price now

$64.95at WalmartChecked Nov 8

Prices are checked against each store and labelled with when.

Visit Walmart

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Price facts

Last seen at $64.95 at Walmart on Nov 8.

Our take on the Rockville W8K6D4 V2 8-Inch 1400W Peak / 350 RMS Car Audio Subwoofer Dual 4-Ohm

The Rockville W8K6D4 V2 is an 8-inch car subwoofer with a dual 4-ohm voice coil, rated 350 watts RMS and 1,400 watts peak. It uses a double-stacked 70-ounce strontium magnet, a 2-inch four-layer copper voice coil on a black aluminum former, and a cast aluminum basket. The stiff paper cone, high-excursion foam surround and dual binding posts suit small sealed or ported boxes where space is tight. Against mainstream 8-inch subs it trades brand prestige for a heavy motor and high power rating, so it fits budget builds that can feed it real RMS power.

Best forSpace-limited car audio buildsBudget bass upgradesSmall sealed or ported enclosuresDrivers with a strong amp on hand

Pros

Dual 4-ohm coils allow 2-ohm or 8-ohm wiring
350W RMS is high for an 8-inch driver
Heavy 70-ounce double-stacked magnet
Cast aluminum basket and vented T-yoke for cooling
Dual chrome binding posts and sealing gasket included

Cons

Peak power rating overstates real-world output
Stiff suspension needs break-in before it loosens up
Needs a capable amp to reach its RMS rating
Deep bass is limited by the 8-inch cone size

Rockville W8K6D4 V2 8-Inch 1400W Peak / 350 RMS Car Audio Subwoofer Dual 4-Ohm prices at every store

WalmartNew
In stockSold by AudiosavingsReturns: Sold by a Walmart Marketplace seller; returns go to the seller under the seller's returns policy.
$64.95Free shippingChecked Nov 8
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About the Rockville W8K6D4 V2 8-Inch 1400W Peak / 350 RMS Car Audio Subwoofer Dual 4-Ohm

The Rockville K6 Series W8K6D4 V2 is an 8-inch car audio subwoofer with dual 4-ohm voice coils.

Brand: Rockville
Size: 8 inches
Color: Black

Specifications

color: BlackSource
size: 8"Source

Questions and answers

What amplifier power does this subwoofer need?: It is rated 350 watts RMS, so pair it with an amp that delivers roughly that much clean power at the impedance you wire it to. A weaker amp will not get the most from it, and clipping can damage the coil.
How do I wire the dual 4-ohm voice coils?: Wiring the coils in parallel gives a 2-ohm load; wiring them in series gives 8 ohms. Choose based on what your amplifier is stable at.
What size enclosure does an 8-inch sub like this need?: It is built for compact boxes, and a small sealed enclosure gives the tightest response. A small ported box adds output but needs more space and careful tuning.
Is this a good upgrade over a stock car stereo?: Yes, if you add a dedicated amplifier. A factory head unit alone will not drive it, but with proper power it adds noticeably deeper bass than door speakers.
What is included with the subwoofer?: The driver comes with dual chrome-plated binding posts, a rubber magnet boot cover and a mounting gasket. An enclosure and amplifier are not included.
Where is the Rockville W8K6D4 V2 8-Inch 1400W Peak / 350 RMS Car Audio Subwoofer Dual 4-Ohm cheapest?: At Walmart, for $64.95, as of our latest check.
What do buyers say about the Rockville W8K6D4 V2 8-Inch 1400W Peak / 350 RMS Car Audio Subwoofer Dual 4-Ohm?: Rated 4 out of 5 from 4 ratings.