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MT Audio Gehäuse

15" (38cm) bass reflex enclosure

Regular price 289,00€
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Free shipping on orders of €49 or more

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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.

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Name: MT Audio Shop

Address: Amberger Str. 17, 91224 Pommelsbrunn

Email: info@mtaudio.eu

Website: www.mtaudio.eu

European Manufacturer: Yes

High-quality subwoofer empty enclosure with enormous reproduction, even in the low bass range. Almost all woofers can be placed in this enclosure and can be used universally. These enclosures are not only visually appealing, function is the top priority here. The 20 mm solid MDF housing ensures stability, connection terminals for quick connection and the large slot port for perfect tuning and powerful bass reproduction. With the quick-release fastener, the box can be disconnected and removed from the vehicle in no time at all. The reproduction of the enclosures varies depending on the type of vehicle and can be below 30Hz, these enclosures are suitable for any conventional music genre, from Ami HipHop to Techno, Rock and much more.

Technical data:

Single 15" slot
Width in cm: 90
Depth in cm: 44,5
Height in cm: 49
Port opening in cm: 8 x 40,4
Port area: 325cm²
Port length: 49cm
Tuning: 35Hz
Hole cut-out: 35.5cm
Installation depth max: 46,2cm
Material: MDF type-A
Thickness: 20mm
Gross volume: 190L
Net subwoofer: 130L
Manufacture: Europe
Connection: Terminal
Cable cross-section: 1,5²


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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.

15" (38cm) bass reflex enclosure - Here's what our expert has to say

With bass-reflex systems, precise tuning is crucial. A reflex tube that is the wrong size can turn a high-end driver into a mediocre performer.

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