Need help to build enclosure for 5.25 tang band sub

[Pizza Snob]

This is my first pot in this forum and I am not a audo junkie so excuse and ignorant questionss. I really appreciate this forum exists and the help of anyoen willing to speak with me.

Ok so picture this, I want to mount a 5.25" tang band subwoofer on the back top side side (trunk) of my sons Kid Trax Dodge Charger Police Car Ride On (Powerwheels Car) That was the smallest affordable sub I could find.

Where it is being mounted presents a unique challenge in that the dimentions are limited to 26" L x 6" W x 10" height. It certainly can be a smaller enclosure then that but that is the maximum area I have to mount something underneath the sub. I don't what materials to use, what size to build, to leave it free air, to make a port in the enclosure or what. I am clueless on this.

Could someone please tell me what dimentions I need to build to be less then the spec above and that will support the manf recommendation of .24 cubic ft?

Here is the product description:
Tang Band W5-1138SM 5-1/4" Neodymium Subwoofer


Amazing bass in a compact package! This one-of-a-kind 5-1/4" subwoofer has an impressive 9.25 mm of Xmax. A wide roll surround, raised flat spider, and large 1-1/4" 4-layer voice coil ensure impressive bass performance and high power handling. The vented pole and vented spider allow good airflow around the coil to improve heat dissipation and reduce compression. The ultimate miniature subwoofer driver!
Specifications: • Power handling: 40 watts RMS/80 watts max • VCdia: 1-1/4" • Impedance: 4 ohms • Re: 3.6 ohms • Frequency range: 45-1,500 Hz • Fs: 45 Hz • SPL: 82 dB 2.83V/1m • Vas: 0.24 cu.ft. • Qms: 2.68 • Qes: 0.61 • Qts: 0.49 • Xmax 9.25 mm • Dimensions: Overall Diameter: 6-1/8", Cutout Diameter: 4-3/4", Mounting Depth 3-1/8".


Also, I want to buy two speakers. What speakers would match well but be smaller then 6"?

Everythign is powered by a 12 volt battery and a LAPAI 2.1 channel mini amp.
Output Power: 20W RMS [200W PMPO] x3
Channels: 2 + 1 Super Bass
SIN ratio: >80dB
THD rated RMS power: <0.1% at KHz
Speaker impedance: 4 - 16
Casing material: lightweight aluminium

Thanks in advance!!

[revboden]

start here: Design at Subwoofer-Builder.com

[bjorno]

Originally Posted by Pizza Snob

..Could someone please tell me what dimentions I need to build to be less then the spec above..

Hi, Take a look at this picture:

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[Pizza Snob]

Has anyone built an enclosure for this sub? Thanks for the link I will take a look. I can't process the visio. I do not have the appitude nor test equipment to be that precise.

[bjorno]

Originally Posted by Pizza Snob

...I can't process the visio. I do not have the appitude nor test equipment to be that precise...

?

b