BP-08 | Alumapro 8 inch 250 watt Band Pass Enclosure

Maximum Bass in Minimum Space — Hand-Built in Huntley, IL

The BP-8 proves you don't need a massive box to get massive bass. Alumapro's BP-Series bandpass enclosures are engineered to produce maximum acoustic output in the smallest possible space. The dual chamber design is more efficient than conventional sealed or vented enclosures — meaning it's louder with less amplifier power. If you're tight on space but refuse to compromise on bass, the BP-8 is built for you.

Dual Chamber Bandpass Design

Inside the BP-8 is a precisely tuned dual chamber system that does what sealed and ported boxes can't — it uses both the front and rear energy of the woofer to produce sound. The result is significantly higher efficiency and output from a compact package. The frequency response is specifically tailored to complement the acoustics of a car interior, extending bass below 30Hz with authority.

Alumapro Aluminum Alloy Cone Woofer

At the heart of the BP-8 is a purpose-built 8" Alumapro woofer featuring the signature aluminum alloy cone — immune to temperature and humidity extremes that destroy paper and poly cones. The massive motor structure, rigid frame, Kevlar spider, and Santoprene surround deliver consistent, reliable performance year after year.

Aero-Port Technology

Large flared aero-ports eliminate compression and port noise that plague lesser enclosures. At high output levels where cheap boxes start choking and making wind noise, the BP-8 stays clean and composed. More air moves freely, more bass reaches your ears.

Built to Last, Built to Impress

The BP-8 is wrapped in premium durable black carpet with heavy-duty bolted and clamped construction. A thick gasketed plexi viewing window with carbon-pattern accents lets you show off the Alumapro woofer inside. This isn't just a subwoofer enclosure — it's a showpiece.

Specs at a Glance

• Enclosure: Bandpass with 1x8" Alumapro woofer
• Frequency Response: 30–100 Hz
• Impedance: 4 ohms
• Sensitivity: 92dB / 2.83v / 1m
• Dimensions: 10"W x 13.5"H x 15"D

Engineered and assembled in the USA by Alumapro.