Single Universal Birch 15"Ported Subwoofer Box 1" Baffle Tuned To 30Hz

• Premium 18mm Baltic Birch Construction: Crafted from 13-ply Baltic Birch with a reinforced 1" (24mm) 17-ply baffle for exceptional rigidity, reduced flex, and superior acoustic performance.
• Deep, Accurate Bass Tuned to 30Hz: Engineered with a 3.5 cu ft net volume and a 46.5 sq in slot port (15.5" × 3") to deliver clean, low-frequency extension and powerful output.
• Seamless, High-End Exterior Finish: Built using a refined assembly process with no visible screw holes, then stained in carbon gray and sealed with a durable polyurethane coat for a premium custom look.
• High Power Handling Up to 1500W: Titebond III full-glue construction, baffle bracing, and heavy-duty materials ensure long-term reliability under demanding subwoofer setups.
• Premium Hardware & Pre-Wiring Included: Features satin nickel brass binding posts and pre-wired 10-gauge OFC internal wiring for maximum conductivity and easy installation.
• Universal 15" Fitment: Designed with a 14.125" cutout and optimized internal airspace to accommodate a wide range of 15" subwoofers.

Single Universal Birch 15"Ported  Subwoofer Box 1" Baffle Tuned To 30Hz

This Listing Includes:

• (1) 15" Net Ported Subwoofer Box

Experience elite bass performance with our premium 3.5 cu ft Baltic Birch ported enclosure. Crafted from 18mm 13-ply Birch and reinforced with a 1" (24mm) 17-ply baffle plus an integrated baffle brace, this enclosure delivers extreme rigidity while staying lightweight. Our refined assembly process eliminates all visible screw holes, leaving your box with a seamless, custom-built appearance.

Every enclosure is fully glued with Titebond III and finished in our signature carbon gray stain, topped with a polyurethane clearcoat. Satin Nickel Brass binding posts and 10GA OFC pre-wiring ensure maximum conductivity and reliability. Built strong enough to support subwoofer systems up to 1500W, this enclosure is designed for clean, deep, accurate bass at high output.

Specifications:

• Net Volume: 3.5 cu ft


• Tuning: 30Hz


• Port Area: 46.5 sq in


• Port Dimensions: 15.5" Ã 3"


• Subwoofer Cutout: 14.125"


• Wood Thickness: 3/4" (18mm) Baltic Birch


• Baffle: 1" (24mm) solid birch, 17-ply


• Construction: 13-ply Baltic Birch panels


• Finish: Carbon gray stain + polyurethane


• Hardware: Satin Nickel Brass binding posts


• Internal Wiring: 10GA OFC

Dimensions:

• Height: 17â€


• Width: 29.5â€


• Depth: 20â€

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.

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