Skip to content
Free shipping with delivery in 2-4 days See details
Free shipping with delivery in 2-4 days See details



DS18 ZXI Quad Stacked 8" 600 Watt RMS Dual 4-Ohm 2" Voice Coil Subwoofer ZXI8.4D

Save 20% Save 20%
Original price $212.95
Original price $212.95 - Original price $212.95
Original price $212.95
Current price $169.95
$169.95 - $169.95
Current price $169.95

Free Gifts when added to Cart

The more you spend, the greater selection of free gifts you'll have at your fingertips when selecting items in your shopping cart!

Spend More, Save More

Big Jeff loves his customers!!!
  • Spend $250, Save 3% *Must purchase 2 items to qualify
  • Spend $500, Save 5% *Must purchase 3 items to qualify
  • Spend $1000, Save 7% *Must purchase 4 items to qualify

*Does not apply to: AudioControl, Sundown, XS power or Kicker products*

*Does not stack with other promotional sales*

  • DS18 has the perfect subwoofer to satisfy all your bass head needs in the newly designed for the ZXI8.4D high excursion subwoofer. This monster sub packs a 2 inch coil made to withstand high amounts of power with the utmost efficiency while producing thunderous distortion free bass.
  • This sub has a low FS so it can be used in large boxes with lower than normal tuning. Not only will this subwoofer slay the lows, it is versatile enough to also play higher frequencies in the bass zone of sub frequencies.
  • The ZXI Car Audio subline is a great high excursion line of subwoofers that both handle great power and give you smooth clean bass while playing ultra low frequencies. These subs work great in both sealed and ported boxes giving you many options for placement in any vehicle.
  • This 8 inch model comes dual 4 ohm and comes with a 2 inch voice coil that handles 600w RMS and 1200w max power.
  • The large foam surround and pressed paper cone works greatly together to deliver smooth crisp bass that can be heard strongly throughout the vehicle giving you an amazing bass experience.

DS18 ZXI Quad Stacked 8" 600 Watt RMS Dual 4-Ohm 2" Voice Coil Subwoofer ZXI8.4D

This listing includes:

  • (1) DS18 ZXI 8" Dual 4-Ohm Subwoofer

Experience thunderous bass like never before with the DS18 ZXI8.4D 8" Quad Stacked Subwoofer. Renowned for its high excursion capabilities, this subwoofer handles up to 1200W of maximum power, delivering smooth ultra-low frequency responses and exceptional audio performance. Whether you prefer sealed or ported boxes, the ZXI8.4D excels in both, offering flexibility and optimal placement in any vehicle. Elevate your audio experience with crisp, smooth bass that permeates every corner of your vehicle.


  • Nominal Diameter: 8" / 203.2mm

  • Nominal Impedance: Dual 4 Ohm

  • RMS Power Handling: 600 Watts

  • Maximum Power Handling: 1200 Watts

  • Sensitivity (1w/1m): 1200 Watts

  • Frequency Response: 25Hz - 880Hz

  • Recommended Lo-Pass Crossover: 90Hz

  • Voice Coil Diameter: 2" / 50.8mm

  • Voice Coil Former Material: Black Aluminum

  • Winding Material: CCAW

  • Cone Material: Non-Pressed Paper

  • Dust Cap Material: PPI

  • Surround Material: Foam

  • Basket Material: Aluminum

  • Basket Color/Finish: Black Sandblasted

  • Magnet Material: Ferrite

  • Magnet Weight: 104 Oz (4 x 26 Oz)

  • Displacement Volume: 1.02L / 0.036ft

Thiele & Small Parameters:

  • Equivalent Volume Vas: 6.75L / 0.238ft3

  • Free Air Resonance Fs: 45Hz

  • Mechanical Factor Qms: 5.318

  • Electrical Factor Qes: 0.791

  • Total Factor Qts: 0.689

  • Moving Mass Mms: 87.65g

  • Compliance Cms: 0.135mm/N

  • Bl Factor Bl: 8.073

  • Voice Coil Inductance Le: 0.476 mH

  • Diaphragm Area Sd: 188.69cm2

  • DC Resistance Re: 4.0+4.0 ohms

  • Efficiency Bandwidth Product EBP: 58.4

Recommended Enclosures:

  • Sealed Internal Volume: 17L / 0.6ft3

  • Sealed Box Output Response F3: 50Hz

  • Ported Internal Volume: 28.3L / 1ft3

  • Port Size *Square (W x H x Long): 1.75" x 7.99" x 14.67" / 44.5 x 203 x 372.7mm

  • Port Tuning Frequency FB: 35Hz

  • Ported Box Output Response F3: 28Hz


  • Overall Diameter: 8.58" / 218mm

  • Overall Depth: 6.83" / 173.5mm

  • Front Mount Baffle Cutout: 7.31" / 185.8mm

  • Mounting Depth: 5.51" / 140mm

  • Motor Diameter: 5.27" / 134mm

  • Gross Single Unit Weight: 14 lb

Payment Information


We accept PayPal for all ebay orders. You can use your credit through PayPal as all major credit card are accepted by PayPal.

We accept PayPal for all international orders, your address must be verified with PayPal.

We are not responsible for any custom duties or brokerage fees that may apply for all international orders.

When you click on the Buy it Now button you are entering into a
contract whereby you agree to purchasing the item at the price listed.

If you want to ship your item to an alternate address please add
that address on your PayPal account and use the address as the default
or confirmed address to pay us through PayPal

With Free Same Business Day Shipping we work to get you your order Fast. 


All orders over $500 will require a signature for delivery.

All pre-selected shipping rates and methods are for customers with a
valid residential or commercial address within the Contiguous 48 United
States (PO Boxes address may require additional charges).

P.O. Boxes, APO/FPO addresses, Alaska, Hawaii, Puerto Rico, Guam,
U.S. Virgin Islands, Northern Mariana Islands, American Samoa, Canada,
and other countries may require additional shipping fees. Please contact
a member of our team for detailed shipping charges.

Shipping is available only to PayPal verified addresses. When making
payment please confirm your address has been verified with PayPal. Once
payment is made shipping address can not be changed/altered. Payments
made using an unverified PayPal address will be refunded and order will
be canceled.

We will not accept request to change shipping address once payment
has been made. Please confirm your shipping address is up-to-date and

Typical handling time for orders is 1-business day. We do our best
to ship every package with-in 1 business day of receiving a cleared
payment. In some circumstances additional time may be need, in which
case we will contact buyer.

Shipped orders that are returned by the shipping company due to an
insufficient address or an undeliverable address will be refunded less a
20% restocking fee.

If package is refused or marked undeliverable and returned
back to us by the carrier, you will need to pay the shipping cost in
full to have the package sent back to you or we can refund the money
minus the cost of shipping


If you have not received your package, but the tracking information shows that it was delivered,
please do the following within 36 hours of expected, stated delivery:


Verify the shipping address on the order is the address where you are looking for the package

Look for a notice of attempted delivery

Look around the delivery location for the package, or see if a neighbor has accepted the delivery

Be sure to double check your mailbox and other usual spots for package delivery


If you think that your package has been stolen, we will require a police report since this is now theft.
Once we have a police report on file for the stolen package, we will reship your order.

Customer Reviews

Be the first to write a review