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

• POWERFUL 8" SUBWOOFER: Delivers 600W RMS and 1200W max power for strong, low-frequency bass in compact car audio builds.
• DUAL 4-OHM VOICE COIL: Dual 4-ohm configuration gives installers flexible wiring options for matching amplifiers and system setups.
• QUAD-STACKED MOTOR: Built with a massive 104 oz ferrite magnet structure using four stacked 26 oz magnets for serious bass control.
• HIGH-EXCURSION DESIGN: Foam surround, non-pressed paper cone, and PPI dust cap help produce smooth, deep, responsive bass output.
• SEALED OR PORTED READY: Designed to perform in sealed or ported enclosures, making it a versatile option for daily drivers and custom installs.

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.

Features

• 8" quad-stacked subwoofer


• 600W RMS / 1200W max power


• Dual 4-ohm voice coil


• 2" black aluminum voice coil former


• 104 oz ferrite magnet structure


• High-excursion bass design


• Non-pressed paper cone


• Foam surround for deep movement


• Black sandblasted aluminum basket


• Works in sealed or ported enclosures


• Compact size with big bass output


• Great for custom car audio builds

Specifications:

• 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

Measurements:

• 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

Accepted Payment Methods at Big Jeff Audio

At Big Jeff Audio, we strive to make your shopping experience as smooth as possible by offering a wide variety of payment options. Below is a complete list of the payment methods we accept:

Credit and Debit Cards

• Visa
• Mastercard
• American Express
• Discover
• Diners Club

Digital Wallets

• Amazon Pay
• Apple Pay
• Meta Pay (formerly Facebook Pay)
• Google Pay
• Shop Pay
• PayPal

International Payment Methods

• Bancontact
• iDEAL

Bank Transfers

• Zelle

Financing Options

We also offer financing options to make purchasing easier. Learn more about our financing options here.

• Klarna
• Affirm
• Sezzle
• Snap
• Acima
• Tiptop

If you have any questions or need assistance with payments, feel free to reach out to us at info@bigjeffaudio.com or call us at 737-BIG-JEFF.

Shipping Options and Delivery Time

Do You Offer Expedited Shipping?

Yes! At checkout, you can select from different shipping options:

• Standard Shipping: Free for orders over $100.
• Expedited Shipping: Available at an additional cost, calculated based on the weight and destination of your order.

How Long Does Delivery Take?

• Handling Time: Most orders are processed and shipped within 1 business day after receiving cleared payment. Occasionally, additional handling time may be required, but we’ll notify you if that’s the case.
• Standard Shipping: Typically takes 3-5 business days, though delivery may be affected by extreme weather or holidays.

What Happens If My Package Is Undeliverable?

If your package is refused or marked undeliverable and returned to us by the carrier, you’ll need to pay the full shipping cost to have the package resent. Alternatively, we can refund your order, minus the cost of shipping.

Why Can’t I Track My Order?

If you're having trouble tracking your order:

• Make sure you’ve received the shipping confirmation email with the tracking number.
• Log into your account on our website and use the “Check Your Order Status” button.
• If the issue persists, please refer to our detailed guide on tracking your order or contact our customer service team for further assistance.