All my materials listed below with links: Plug and Play Harness - tinyurl.com/4vtawdt5 or email me at info@prosumergarage.com Basser Box - Basser Box from Basser (tinyurl.com/3pcppmpj) or Basser Box On eBay (tinyurl.com/32rf5hsr) JL Subwoofer - tinyurl.com/6j3q59az Mounting Screws for JL Subwoofer - amzn.to/35dHHjh Terminals for inside Basser Box - amzn.to/3r6eTBp Kicker Key500.1 Smart Mono Amplifier - amzn.to/3bdlV2W Bass Knob - amzn.to/3naG2kI Right Angle Phono Wire for Bass Knob - amzn.to/3ngs7ts Kicker Wiring Kit - amzn.to/2Xakqdw Speaker Wire - amzn.to/3pRgBX7 RCA Cable - amzn.to/2XbO7Lp Zip Ties - amzn.to/3rGsosC Wire Taps - amzn.to/3qH7R5T Felt Tape - amzn.to/3egk9Oj Video to further explain the Plug and Play Harnesses. - kzfaq.info/get/bejne/Y8inhaVltcXMnZs.html Email orders@prosumergarage.com if you’d like to buy a harness. ***MUST READ BELOW*** ***Not all amps will work on a B&O system. If the amp can’t see 40v on the speaker input, your B&O amp will cut out because it will short to ground after a couple of start cycles. This is why I used the kicker amp linked above. The Kicker amp on high level input can see 40v and runs flawlessly. If you absolutely want to use a amp that can’t support 40v you can use a smart LCI linked here **amzn.to/2OR6O69**. If you have any questions you can DM me or ask below. *** These amps are know to work without the need for a LCI. Kicker 46CXA400.1 - amzn.to/3u7wta7 Kicker 46CXA800.1 - amzn.to/31MowLz Kicker 46CXA1200.1 - amzn.to/3dkCNV0 Kicker 46CXA1800.1 - amzn.to/2PkZz7a Also check out. www.audiworld.com/forums/audi-a5-s5-rs5-coupe-cabrio-b9-220/sportback-basser-box-jl-audio-subwoofer-kicker-amplifier-bass-knob-install-3017887/ Commissions Earned: As an Amazon Associate I earn from qualifying purchases.

THANK YOU so much! This video, your cable and your step by step guide on the forum made this installation a breeze! I'm super happy with the end result.

Completed this install over the weekend. Definately recommend this cable. Made connections a breeze. Thanks for the all the details in the video. Wife is satisfied with her new sound stage.

Clean install bro. Good job 👍🏻

This is such a well thought out installation video. Very clear instruction. I also ordered the harness, response and shipping time was excellent. Can’t wait to get this installed in my B9 A4.

B9.5 RS5 here. Installed a 10” Kicker Comp RT (running parallel) and using a Kicker 500.1. Hits pretty hard for being in a basser box sealed enclosure! 😮

I was going to do a small box like that to save weight instead I got a massive ported box to fit my 3 sundown 8 inch subs lol

I have an old classic rockford fosgate power 550x amp, I have no idea what volt it would recognize, it does say on the spec sheet 30v/ms slew rate. Would that work or would I need to get the smart lci?

Which other subwoofers work with this setup/box? Also, will other amps (such as a boss amp) work with in an Audi without B&O?

I like clean installs like this but always worried about it not sounding good because of a small box

can you suggest a newer amp & 12" sub for the RS5 w B&O?!

Does this amplifier have a built in line out converter?

Good timing on this video, I just got a 2018 A5 Sportback (non-B&O) and I'm looking to do something similar. How thick is the MDF on the Basser box and how does it sound?

Great video! Do you know if this box fits a coupe? I have a 2018 a5 prestige coupe. Thanks

The links to the boxes are no longer valuable. Either temporary out of stock or no longer available on eBay. Do you have any other resources to get the box? Thanks.

How did you go about popping the rear seats? Are they just clipped on? Straight pull up to get under it?

Hey i just installed mine in yesterday but when i got done to turn on car after about 2/3hrs the car wouldnt start everything works inside just it won’t fire up but when i try to push/start it it comes on but no start but makes clicking noise like battery is dead 🧐🧐 do i need to jump it or since i disconnected the battery for a while it needs to be recoded??

Hi! Do you ship to Netherlands also? Wich cable do I need for a 2021 a4 station B9.5?

Nice set up does this whole setup work with the 3D b&o stock system ?

I am needing the harness. Do you have any available?

I'd like to purchase one of the harnesses. $75. I sent an email but haven't heard from you. Figure out what try this way to contact you. Thanks!

god the bang and dogshit speakers are terribleee for the brand lol