Can u recommend a cheap spare tyre subwoofer setup/install?

[toyotathebest]

Hello everyone,

Although the factory installed speaker sound isn't too bad, I want more deeper bass without it taking too much space. One of the options I've seen is installing a subwoofer to the spare tyre. Now I appreciate that the JBL Basshub seems to be one of the best ones out there, but don't want to pay hundreds of pounds and would be more than happy with a much cheap alternative, off Aliexpress or even a used model.

Therefore, can you please help:

1. Find a cheap alternative for my vehicle
2. Provide any instructions on how to install it
3. Tell me what accessories and wiring I'll need
4. Whether I would need a seperate amp
5. Whether I would need to change the original stereo.

To give you a better idea, here's my spare tyre location:

 

Thanks in advance