15" (38 cm) bass-reflex enclosure

Name: 15" (38 cm) bass-reflex enclosure
Brand: MT Audio
Price: 299.00 EUR
Availability: OutOfStock

299,00€

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Wiring Wizard & Port Calculator

Use our wiring assistant for easy speaker and subwoofer connections! The correct connection is important for your amplifier! Low-impedance operation can damage the amplifier! The datasheet shows you which connection each amplifier is designed for!

Our port calculator shows you the tuning characteristics of your enclosure! The net volume is always particularly important here; calculate the subwoofer’s actual resonant chamber volume beforehand to get the correct result. The net volume is calculated by subtracting all dead spaces and is crucial for enclosure design.

This high-quality 15" (38 cm) bass-reflex enclosure features a sturdy construction and provides the ideal conditions for powerful, precise, and deep bass reproduction. With a net volume of 130 liters and a tuning frequency of 35 Hz, the enclosure is suitable for a wide range of high-performance 15-inch subwoofers.

The robust construction made of 20 mm-thick Type A MDF ensures high stability and reduces unwanted cabinet resonance. The generously sized slot port, with a port area of 325 cm², enables efficient airflow and supports powerful bass reproduction even at high volumes.

Thanks to its universal design, the enclosure can be paired with many standard 15-inch subwoofers. The built-in connection terminal with a quick-release fastener allows for easy installation and makes it simple to remove the enclosure from the vehicle.

The bass-reflex enclosure is suitable for a wide variety of music genres, from hip-hop and electronic music to rock and other bass-heavy genres. Actual sound reproduction depends on the subwoofer used and the vehicle's acoustic characteristics.

Technical Specifications

Enclosure Type: Bass-reflex enclosure with slot port
Subwoofer size: 1 × 15" (38 cm)
Width: 90 cm
Depth: 44.5 cm
Height: 49 cm
Port opening: 8 × 40.4 cm
Port area: 325 cm²
Port length: 49 cm
Tuning frequency: 35 Hz
Installation opening: 35.5 cm
Maximum installation depth: 46.2 cm
Cabinet material: Type A MDF
Material thickness: 20 mm
Gross volume: 190 liters
Net volume for subwoofer: 130 liters
Connection: Integrated connection terminal
Wire cross-sectional area: 1.5 mm²
Country of origin: Europe

What's Included

1 × 15" (38 cm) bass-reflex enclosure (empty)

Payment & Security

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Frequently asked questions about 15" (38 cm) bass-reflex enclosures

What impedance should my 15-inch subwoofer have for this enclosure?

The bass-reflex enclosure works best with D4 or D28 ohm subwoofers. The impedance mainly affects the choice of amplifier, not the enclosure tuning. Make sure your amplifier is compatible with the chosen impedance.

How low does the frequency response go with this 38cm enclosure?

Depending on the chassis used, the vented enclosure typically achieves 25–35 Hz at –3 dB. The exact lower cut-off frequency depends on the Thiele–Small parameters of your woofer, particularly the resonance frequency (Fs) and Vas volume.

What is the maximum RMS power that the MDF cabinet can handle?

The robust housing is designed to withstand continuous loads of up to 1,500 watts RMS. At higher power levels, additional bracing or damping is recommended to minimise resonance and vibration.

Do I need to adjust the cut-out for my speaker?

The standardised mounting opening fits most 15-inch chassis with a typical cast aluminium basket. To be on the safe side, measure the outer diameter of your subwoofer – it should be around 390–395 mm.

How important is the installation depth for this subwoofer enclosure?

Check whether your woofer, given its mounting depth, will fit into the 130-litre enclosure. Most 15-inch drivers require a depth of 150–250 mm. Also bear in mind the space required for the magnet assembly and any dust caps.

Do I achieve higher sound pressure levels with a sealed or bass-reflex enclosure?

Bass-reflex enclosures typically produce 3–6 dB more SPL in the low-bass range than sealed enclosures of the same size. This higher efficiency results from the utilisation of rear sound radiation via the reflex port.

How do I position the unit in the car for the best results?

Where possible, position the enclosure in the boot with the cone or reflex port facing the boot lid. Avoid corners, as these amplify unwanted resonances. Keeping a distance of at least 10 cm from walls improves bass reproduction.

Can I fit sound-deadening material into the bass-reflex enclosure?

Yes, a light layer of polyester wadding or foam on the side walls reduces cabinet resonance. Keep the reflex port clear and use no more than 30 per cent of the internal volume for damping material.