Alpine S-W8D4 Car Subwoofer<br/> 900W Max (300W RMS) 8" S-Series Dual 4 Ohm Car Subwoofers
Alpine S-W8D4 Car Subwoofer<br/> 900W Max (300W RMS) 8" S-Series Dual 4 Ohm Car Subwoofers
Alpine S-W8D4 Car Subwoofer<br/> 900W Max (300W RMS) 8" S-Series Dual 4 Ohm Car Subwoofers
Alpine S-W8D4 Car Subwoofer<br/> 900W Max (300W RMS) 8" S-Series Dual 4 Ohm Car Subwoofers
Alpine S-W8D4 Car Subwoofer<br/> 900W Max (300W RMS) 8" S-Series Dual 4 Ohm Car Subwoofers
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Alpine S-W8D4 Car Subwoofer
900W Max (300W RMS) 8" S-Series Dual 4 Ohm Car Subwoofers

In stock
$200.00 $169.95

Alpine S-W8D4 900W Max (300W RMS) 8" Type S Series Dual 4 Ohm Car...

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Alpine S-W8D4 Car Subwoofer
900W Max (300W RMS) 8" S-Series Dual 4 Ohm Car Subwoofers

Alpine S-W8D4 900W Max (300W RMS) 8" Type S Series Dual 4 Ohm Car Subwoofer


Don’t think you have room for a subwoofer? Think again. The new S-W8D2 and S-W8D4 8” S-Series subwoofers have a shallow mounting depth of just 3-3/4” and can be used in a sealed box enclosure as small as .15 cubic feet. It is perfect for under-seats, behind rear bench seats in trucks, or even in some door applications.

General Features:

  • 8" 4 Ohm Type S Series Subwoofer
  • Power Handling:
    • Peak: 900 watts
    • RMS: 300 watts
  • Recommended Power Range: 150 - 300 Watts
  • Kevlar Reinforced Pulp Cone
  • HAMR Santoprene Rubber Surround
  • Progressive Spider with Reinforced Layer Tinsel Leads
  • Compound Radius Curve Extended Pole Geometry
  • Perimeter Vented Frame with Airflow Management System
  • 10 AWG Push Terminals
  • 35mm Underhung Voice Coils
  • Concealed Mount Gasket
  • 34oz Ferrite Magnet
  • Top-mount depth: 3-3/4"
  • Cutout diameter: 6-7/8"
  • Frequency Response: 34-200Hz
  • Authorized Dealer
  • 1-year Manufacturer's Warranty
  • Priced Individually

What's in the S-W8D4 package:

  • 8" Dual 4-ohm voice coil subwoofer
  • Alpine S-W8D4 owner's manual
  • 1 Rubber concealing ring
  • Two 3" jumper cables
  • Subwoofer Application Guide
  • Online product registration information
  • Warranty information 
  • Important Notice! 

Cancer and Reproductive Harm-www.P65Warnings.ca.gov

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Shipping Policy

Absolute Pro Music is proud to offer fast shipping at affordable prices. The shipping fee for each order is based on the package weight, destination, and shipping method. For the most accurate shipping information, use the "Get shipping quote" link on the product pages or in your shopping cart.

Shipping Methods and Transit Times

Absolute Pro Music ships orders from our Los Angeles, California location. On occasion, orders will be fulfilled directly by the manufacturer or distributor in order to reduce the shipping time. The shipping times below refer to items labeled with an availability of In Stock - Ships the Same or Next Business Day.

Shipping Method

Order Processing Time

Delivery Time

Total Ship Time

Standard Shipping

1-24 Hours

1-6 Business Days

2-7 Business Days

Three-Day Shipping

1-24 Hours

3 Business Days

3-4 Business Days

Two-Day Shipping

1-24 Hours

2 Business Days

2-3 Business Days

One-Day Shipping

1-24 Hours

1 Business Days

1-2 Business Days

Flat Rate Shipping

1-24 Hours

7-10 Business Days

8-11 Business Days
















United States Customers: 

The shipping methods listed above are for residential and commercial destinations within the continental 48 United States. Absolute Pro Music primarily uses FedEx to ship orders. To provide the most affordable rates, small items shipped via Standard Flat Rate or USPS First Class Mail will be delivered through a joint effort by DHL and USPS. Shipments to military addresses and PO Boxes will only ship via USPS. When shipping to a military APO/FPO/DPO address, we strongly recommend choosing USPS Priority as the shipping time is much quicker than Parcel and averages about 2-3 weeks.

Canadian Customers: We offer all-inclusive shipping to our Canadian customers. (click here for details)

International Customers: We ship to most countries around the world. (click here for details)

Order Tracking

Once an order has been shipped, we send our customers an email with the tracking number for the order. Click on the tracking link in the email to follow the location of the package on the carrier's website. If you did not receive a tracking number by email or need to confirm the tracking information, please contact us at support@absolutepromusic.com or call us at +1(213) 744.11.44

Order Processing

Each order placed on Absolute Pro Music goes through our processing department before it can be shipped. If 3 business days have passed since you submitted payment and you have not received an email with tracking information, please log in to your account to track your orders and/or contact us immediately via email or phone. Customers who do not receive a tracking number within 3 days will receive an order status update via email.

Shipping to Alternate Address

Orders with different billing and shipping addresses may require longer processing times due to an additional verification procedure. The additional verification and processing time are in an effort to protect our customers from online fraud.

Shipping Changes Fees (Address Intercept)

If a request to change the shipping address is made after the package leaves the Absolute Pro Music warehouse, it is subject to an Address Intercept Fee imposed by the shipping carrier. The amount of the fee varies according to the shipping carrier and the destination of the package. Absolute Pro Music will do its best to work with the shipping carriers to make these changes so that your package arrives at the correct address. Please be aware that not all shipping carriers will accept address intercept changes. This policy is in accordance with the security measures and agreements made with our third-party shipping companies.

Signature Required

Due to the valuable contents of some shipments, Absolute Pro Music may require a signature upon delivery. Such guidelines will not be overruled upon the customer's request. Please understand that this is a security measure taken by our Company to ensure the safe delivery of each package and guarantee excellent service. Many of our third-party shipping carriers and payment companies require signatures upon delivery to protect against fraud and theft. Customers may request a signature upon delivery by calling Absolute Pro Music Customer Service at +1(213) 744.11.44.

Shipping Policy Disclaimer

Delivery estimates do not apply to items shipped directly from the manufacturer, nor out-of-stock items. Some items that ship from the manufacturer can only be delivered to addresses within the 48 continental states.

Standard delivery time for domestic customers will average from 2-4 business days but can take longer in some cases. Saturday, Sunday and national holidays are not considered business days for delivery purposes.

Our Shipping Guarantee applies only to shipments delayed due to our service failure. We will not guarantee shipments that are delayed due to an act of god (ex: weather), a catastrophic event, or failure by our delivery partners. Our guarantee is also voided if incorrect billing or shipping information is given and results in your order being delayed to its destination. Our guarantee is also void if no one is available to sign for shipment when delivery attempt is made if a signature is required. 

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