What amplifier power does the ZR8.4D need?

It is rated at 450W RMS, so pair it with an amplifier that delivers roughly that much clean power at 2 ohms or 8 ohms, depending on how you wire the coils.

How do I wire the dual 4-ohm coils?

Wire the coils in parallel for a 2-ohm load or in series for 8 ohms. Choose the wiring that matches your amplifier's stable impedance.

What size enclosure does it fit?

It is an 8-inch subwoofer, so it fits 8-inch sealed or ported enclosures. DS18 publishes recommended box volumes for the ZR line.

Is it a replacement for a factory sub?

It can be, if your factory location accepts an 8-inch driver and you add a suitable amplifier, since it is a passive subwoofer.

The package includes one Elite-Z 8-inch dual 4-ohm subwoofer. An enclosure, grille and wiring are not included.

Where is the DS18 8in 450 Watts RMS 4 ohm DVC ZR Subwoofer cheapest?

At Best Buy, for $117.91, as of our latest check.

What do buyers say about the DS18 8in 450 Watts RMS 4 ohm DVC ZR Subwoofer?

Rated 5 out of 5 from 2 ratings.

Where can I buy the DS18 8in 450 Watts RMS 4 ohm DVC ZR Subwoofer?

17 stores we checked sell it, including Amazon, Best Buy, DS18, Hi-Tech Car Audio, SonicElectronix.com.

DS18 8in 450 Watts RMS 4 ohm DVC ZR Subwoofer

Best price now

$117.91at Best BuyChecked 1 h ago

Compared across 14 stores. Prices are checked against each store and labelled with when.

Visit Best Buy

DS18 8in 450 Watts RMS 4 ohm DVC ZR Subwoofer

Best price now

$117.91at Best BuyChecked 1 h ago

Compared across 14 stores. Prices are checked against each store and labelled with when.

Visit Best Buy

Ask our agent about this product

It checks today's price at every store, compares the alternatives and answers in about a minute.

Price facts

Lowest price today: $117.91 at Best Buy (checked Nov 12, 2026).
Checked at 14 stores.

Our take on the DS18 8in 450 Watts RMS 4 ohm DVC ZR Subwoofer

The DS18 ZR8.4D is an 8-inch car subwoofer from DS18's Elite ZR line, rated at 450W RMS and 900W peak with a dual 4-ohm voice coil. Its 2-inch aluminum voice coil and stamped steel basket are built for small sealed or ported enclosures where space is tight. It suits bassheads who want a compact sub that can be wired to 2 or 8 ohms to match an amplifier. Against 8-inch rivals it trades deep low-end extension for punch and power handling, and owners say it needs a clean, well-matched amp to sound its best.

Best forSmall sealed or ported enclosuresTight-space car audio buildsShoppers wiring dual 4-ohm coils to 2 or 8 ohmsPunchy bass over deep subsonic extension

Pros

450W RMS and 900W peak handling for an 8-inch sub
Dual 4-ohm coils allow 2-ohm or 8-ohm wiring
2-inch aluminum voice coil for power and heat tolerance
Stamped steel basket and matte black finish
Compact 8-inch size fits tight enclosures

Cons

8-inch cone limits very low bass output
Needs a capable amplifier to reach rated power
Dual 4-ohm wiring limits amp options versus single 2-ohm
No grille or enclosure included

DS18 8in 450 Watts RMS 4 ohm DVC ZR Subwoofer prices at every store

Best BuyNew
In stock
$117.91Free shippingChecked 1 h ago
Visit Best Buy
DS18New
In stock
$119.95Free shippingChecked 1 h ago
Visit DS18
AutoZoneNew
In stock
$119.99+ $4.99 shippingChecked 1 h ago
Visit AutoZone
AmazonNew
Availability unknown
As an Amazon Associate, Deal.ai earns from qualifying purchases.
$119.95Free shippingChecked 1 h ago
Visit Amazon
Hi-Tech Car AudioNew
Availability unknown
$119.95Free shippingChecked 1 h ago
Visit Hi-Tech Car Audio
SonicElectronix.comNew
Availability unknown
$119.95Checked 1 h ago
Visit SonicElectronix.com
AmericanMuscle.comNew
Availability unknown
$119.95Checked 1 h ago
Visit AmericanMuscle.com
WalmartNew
Availability unknownSold by threepieceus
$119.95Checked 1 h ago
Visit Walmart
East Car AudioNew
Availability unknown
$119.95Checked 1 h ago
Visit East Car Audio
CARiD.comNew
Availability unknown
$119.95Checked 1 h ago
Visit CARiD.com
ExtremeTerrain.comNew
Availability unknown
$119.95Checked 1 h ago
Visit ExtremeTerrain.com
AmericanTrucks.comNew
Availability unknown
$119.95Checked 1 h ago
Visit AmericanTrucks.com
BigJeffOnlineNew
Availability unknown
$119.95Checked 1 h ago
Visit BigJeffOnline
RCA GarageNew
Availability unknown
$109,999.99Checked 1 h ago
Visit RCA Garage

Also available at

Racing Precision MotorsportsCheck price at Racing Precision Motorsports
Essential Sound IlarrazaCheck price at Essential Sound Ilarraza
Lethal PerformanceCheck price at Lethal Performance

Store links may earn us a commission.

DS18 8in 450 Watts RMS 4 ohm DVC ZR Subwoofer price history

Lowest price we've seen: $117.91 on Nov 13 at Best Buy. Tracked across 14 stores since Nov 13.

What reviewers say

Owner feedback on the ZR8.4D is limited, but those who run it describe strong output for an 8-inch sub and solid build quality. Some note it needs a properly matched amplifier and enclosure to deliver its rated bass.

What people mention

OutputPraisedOwners say it delivers strong, punchy bass for an 8-inch driver.
BuildPraisedThe stamped basket and aluminum coil are described as solid and durable.
Low bassMixedSome note it does not dig as deep as larger subs.
Amplifier matchingMixedGetting the most from it depends on a well-matched amp and enclosure.

About the DS18 8in 450 Watts RMS 4 ohm DVC ZR Subwoofer

The DS18 ZR8.4D is an 8-inch car audio subwoofer with a dual voice coil. It handles 450W RMS and 900W maximum power. Each voice coil is 4 ohms, so the sub can be wired to match an amplifier's impedance.

It has a 2-inch aluminum voice coil former with copper winding, a non-pressed paper cone and a foam surround. The stamped steel basket has a matte black finish and DS18 logos. The motor uses a ferrite magnet.

The recommended low-pass crossover setting is 120Hz. Frequency response runs from 33 to 200Hz.

Size: 8 in / 203.3 mm nominal diameter
Impedance: 4 + 4 ohm dual voice coil
RMS power: 450W
Max power: 900W
Sensitivity: 82 dB (1W/1m)
Frequency response: 33-200Hz
Crossover: Recommended low-pass at 120Hz
Voice coil: 2 in / 50.8 mm diameter, aluminum former, copper winding
Cone: Non-pressed paper
Dust cap: PPI
Surround: Foam
Basket: Steel, black matte finish
Magnet: Ferrite, 55 oz
Displacement: 0.03 ft³
Vas: 5.33 L

Questions and answers

What amplifier power does the ZR8.4D need?: It is rated at 450W RMS, so pair it with an amplifier that delivers roughly that much clean power at 2 ohms or 8 ohms, depending on how you wire the coils.
How do I wire the dual 4-ohm coils?: Wire the coils in parallel for a 2-ohm load or in series for 8 ohms. Choose the wiring that matches your amplifier's stable impedance.
What size enclosure does it fit?: It is an 8-inch subwoofer, so it fits 8-inch sealed or ported enclosures. DS18 publishes recommended box volumes for the ZR line.
Is it a replacement for a factory sub?: It can be, if your factory location accepts an 8-inch driver and you add a suitable amplifier, since it is a passive subwoofer.
What is in the box?: The package includes one Elite-Z 8-inch dual 4-ohm subwoofer. An enclosure, grille and wiring are not included.
Where is the DS18 8in 450 Watts RMS 4 ohm DVC ZR Subwoofer cheapest?: At Best Buy, for $117.91, as of our latest check.
What do buyers say about the DS18 8in 450 Watts RMS 4 ohm DVC ZR Subwoofer?: Rated 5 out of 5 from 2 ratings.
Where can I buy the DS18 8in 450 Watts RMS 4 ohm DVC ZR Subwoofer?: 17 stores we checked sell it, including Amazon, Best Buy, DS18, Hi-Tech Car Audio, SonicElectronix.com.