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Blaupunkt Blue Magic XLb 300 A

Single 12" subwoofer enclosure with 500-watt amp

7 Reviews | 3 questions - 6 answers

Item # 023XLB300A

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Our take on the Blaupunkt Blue Magic XLb 300 A

So your music sounds a little thin and you want some low-end oomph, but you don't want to install a bunch of gear in your vehicle to make it happen. Enter Blaupunkt's Blue Magic XLb 300 A.

Turn it on

So your music sounds a little thin and you want some low-end oomph, but you don't want to install a bunch of gear in your vehicle to make it happen. Enter Blaupunkt's Blue Magic XLb 300 A.

This compact powered subwoofer uses a beefy 500-watt amplifier and a 12" sub to give you the low-frequency punch you need to round out your music. You can use the variable crossover control and phase switch to tune the bass for your vehicle, and you can crank the bass boost dial if you want even more low-end throttle.

Once you've adjusted the settings, you can turn up the bass output right from the driver's seat using the wired remote control that Blaupunkt includes.

Easier installation

There's no need for the conventional 12-volt remote turn-on wire connected to your car stereo. Instead, this Blue Magic sub fires up automatically by sensing the incoming signal coming from your RCA cables or your speaker-level inputs. It's a simple way to get your bass going.

Blaupunkt XLb 250 A powered sub panel

Detach the power and ground connector for quickly removing and re-installing the Blaupunkt sub.

Take it out (when space is needed)

At only 10" deep, this compact bass blaster can fit in some tight spots. But let's say you need some extra room for your groceries, camping gear, or golf clubs. Blaupunkt makes it easy. Simply unplug the power and ground connector, detach your RCA cables or speaker wires, and remove the sub for more cargo space. When the cargo is unloaded, you can quickly reattach your subwoofer to get your thump back.

This sub's tough enclosure can withstand the bumps and bruises of life in a trunk or cargo area, and the speaker's protected by a stylish, heavy-duty grille.

Product Highlights:

  • powered 12" subwoofer enclosure
  • Class D amplifier (500 watts RMS)
  • remote bass-level control included
  • detachable plug for power, ground, and turn-on connections for simple removal
  • variable low-pass crossover (50-200 Hz)
  • phase switch (0°, 180°)
  • variable bass boost (0-12 dB)
  • frequency response: 25-200 Hz
  • 15-5/8"W x 19"H x 7"D1 x 10"D2
  • warranty: 1 year
  • Our 60-day money-back guarantee

As soon as I installed the sub, I was blown away from the sound quality and bass. I would recommend this over the Rockford p300. I thought it would be a bad sub. Turns out I was wrong!

Phil, Rancho Cordova, CA

What's in the Box:

  • 12" Amplified subwoofer
  • Two 30-amp ATO fuses (one installed/ one spare)
  • 10" Speaker level input harness
  • Wired remote with 16' cable attached
  • Detachable power/ground terminal
  • 3mm Allen wrench
  • Two 3/8" Screws
  • 2 Flat washers
  • Owner's manual (English/ German/ French/ Spanish/ 18 other languages)

Blaupunkt Blue Magic XLb 300 A Reviews

Average Customer Review(s):

(7 Reviews)

Low end for a low price

Tim from La Crosse, WI on 7/30/2016

Crutchfield Customer Review (What's this?)

I installed the Blaupunkt powered subwoofer in my BMW X5. A very easy install and was up and thumping quickly. The speaker delivers ok bass at low volumes but does not like to be loud without distortion. It doesn't do well with very low bass and I have had many 10" subs that could easily outperform. Aesthetically, it is a nicely finished box that uses high quality materials. What Blaupunkt put into custom stitching of their logo I wish they would have put into better performance.

Pros: Appearance Ease of installation Comes with level adjustment knob

Cons: Distortion at higher volumes Cheap woofer


Bryan from Plano, TX on 6/11/2016

2010 MINI Cooper
Crutchfield Customer Review (What's this?)

I have completed many custom installs in the past, but I really just wanted a simple addition to my factory Harman Kardon system to fill in the bottom end a bit. This product was delivered to me in 3 days and the install took me about three hours total. The 12" powered sub-woofer sounds great, having the adjustment knob is wonderful, and I also like the fact that it has an audio signal sensing remote turn on. I didn't want to tap into any factory wiring for any of the wires needed for installation. I did order a harness from another company that makes a T-harness that connects inline with the wiring between the factory head unit and factory amplifier to provide two sets of RCA outs, so I didn't have to tap in to anything with a line-level converter. Overall, I am very happy with the sound, controls, and ease of installation that this product offered me. I just put it in today, and cannot wait for my daily commute to work. Thumbs up!

Pros: Easy installation. Audio level sensing remote turn on. SOUNDS GREAT! Bass control knob. Built in crossover and boost adjust ability. Reasonably priced.

Cons: None yet.

Way better then any other amplifed sub !

Phil from Rancho Cordova, CA on 6/11/2016

2015 Mercedes-Benz Sprinter Cargo

As soon as I installed the sub, I was blown away from the sound quality and bass. I would recommend this over the Rockford p300. I thought it would be a bad sub. Turns out I was wrong!

Pros: Best bang for the buck! Quality amplifier!

Cons: Blaupunkt could have done a better job of covering the subwoofer with their material.

Good but I don't think it's my taste

meruem from California on 3/25/2015

It's loud but it seems to lag a little behind the music. It's also not very punchy and it's more boomy. I listen to techno music and I prefer the quicker response sub woofers

Pros: Loud and boomy

Cons: Not as punchy and responsive as I'd like

Awesome sound quality

Anyone from Michigan on 11/4/2014

Crutchfield Customer Review (What's this?)

This Blue Magic is easy to install. I like that the amp has already been matched and is hidden inside the box making it a clean install. The additional features of having a volume control, and can be mounted anywhere. In the old days we had to pull over and crank up the dial- now it's at your fingertips. This easily fits behind the seat of an S-10 pickup with bucket seats/ or split bench. I complimented this with a new Kenwood excelon KDC-X598.

Pros: Easy hook-up, clean design with amp already installed- no guess work on compatibility.


Great buy

Anonymous from anchorage, AK on 5/11/2014

Crutchfield Customer Review (What's this?)

I was a bit hesitant on this setup, but I highly recommend it for those who want a hard hitting sub but like to save space. This beats the alpine type r 12 I had which also was pushing 500 watts. I love that it comes with the gain knob. I can adjust the bass for each song as I please from the drivers seat. Works wonders since I listen many genres. Going to purchase a second for my wife's car very soon.

Pros: -No need to find matching amplifier -Doesn't require remote wire ( turns on using signal from RCA) -GAIN remote control included - amp built in box

Cons: None so far

my first subwoofer

salubrious from CO on 3/17/2014

Crutchfield Customer Review (What's this?)

Easy install, especially with the wiring kit bought here. Just needed a big terminal ring for the ground cable because I used the seat belt bolt. Definitely use the remote volume control! Different styles of music will like this sub in different ways. I have a good jvc head unit so I can switch the eq on the fly. This boombox will give a decent shake to your car and get very loud.

Pros: Lots of fun

Cons: I had to buy an alpine amp to boost the mids and highs from my four polk door speakers. You might want to think about getting the wiring kit for two amps when you get this sub. I know I am glad I did!


Hands-on research

Features and Specs

Enclosure Type Sealed
Finish Material vinyl
Grille Metal
Connector Type RCA/Molex
Bi-amp Inputs No
Woofer Size (inches) 12
Woofer Material Spun Paper
Passive Radiator ---
Width 19-1/2"
Height 15-5/8"
Depth 11-1/8"
Second Depth 7-1/2"
Parts Warranty 1 Year
Labor Warranty 1 Year
Frequency Response 25-200
Amplifier Power (RMS) 500 watts
Maximum Wattage 1000 watts
Sensitivity N/A
Impedance N/A
Second Voice Coil Impedance N/A
Crossover Point 50-200

Product Research


Remote Gain Control: The included wired remote allows you to control the output level from the front of the vehicle. The remote is designed to mount under the dash. The attached 16' cable, with a 3.5mm mini-plug on the end, connects to the powered sub.

Note: The remote measures approximately 1-7/8" wide (2-1/2" including the mounting flange) x 1" tall x 1-3/4" deep (2-1/4" including the knob and wiring).


  • Line Level Inputs: left and right female RCA preamp level inputs
  • Speaker Level Input: 4-pin speaker input wiring harness included
  • Power: the removable set screw terminal covers power (up to 4 AWG), ground (up to 4 AWG), and remote turn-on (up to 8 AWG); Blaupunkt recommends 8-gauge minimum power and ground wires
  • Fuse: 30 Amp ATO fuse installed
  • Remote: 3.5mm port for the included wired remote


  • Gain Control: rotary control sets gain to match the input (RCA input variable from 200mV to 5V, speaker level input variable from 500mV to 10V)
  • Crossover Control: low pass crossover point; rotary control, continuously variable from 50 to 200 Hz
  • Bass Boost: rotary control; continuously variable from 0 to 12 dB
  • Phase: two position switch; 0° or 180°
  • Auto Turn-on: three position switch:
    • Remote: turns on when +12 volts is applied to the remote terminal
    • DC Offset: turns on when a DC offset is detected on the speaker level inputs (turns off after approximately 60 seconds with no signal)
    • Audio: turns on when an audio signal is detected on the RCA inputs (turns off after approximately 60 seconds with no signal)


  • Width: 19-1/2"
  • Height: 15-5/8"
  • Depth:
    • 7-1/2" (at the top)
    • 10-3/8" (at the bottom)
    • 11-1/8" (including grille)

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team. They verify what’s in the box, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.

Q & A

Customer Q&A

Crutchfield asked  
Why did you buy this?

I drive a 2013 Nissan Altima 3.5s with the factory base stereo and needed something to add a bit more bass to my music without compromising trunk space or spending over $500. [ TYLER  Jun 08, 2016 ]

3 questions already asked

This speaker has a built in amplifier! So you need no only need one for your other speakers! [ Cannibal  Mar 16, 2016 ]
You will want to contact an Advisor by phone (1-800-324-9695) or online chat to discuss compatibility with your current system. Some of the integration will depend on how you want to connect everything, and on the connections available. They will be able to pull up your current gear and see if this will work with it. If it does not, then they will also be able to discuss other options with you. [ Jeff  Mar 15, 2016 ]  Staff
There is an amplifier built into the box already. Therefore, you shouldn't need to install any amp you already have. Power, ground, and RCA is all you need. Remote is optional as the app can sense power conning from your rca. I used the remote signal anyway. [ MICHAEL  Mar 15, 2016 ]
I forwarded your question to an Advisor and they responded with the following: The subwoofer box does not list the amount of air space the box has but based on the dimensions of the box I would estimate it to be around 1.5 cubic feet. If you would like to discuss further you can contact an Advisor directly by phone (1-800-324-9695) or online chat. [ Krissy  Feb 16, 2015 ]  Staff
This powered sub can enhance bass in any factory or aftermarket stereo system. There is an installation kit available for this application. I highly recommend it. [ MIKE  Jul 19, 2014 ]
I forwarded your question to an Advisor and they responded with the following: Pretty much any stereo with a subwoofer preamp output will be compatible with this powered subwoofer. Also so we can recommend correctly we need to know if you have the factory Bose audio system in the Altima? You will need the EFX 8-gauge Amplifier Wiring Kit to have this subwoofer installed. If you would like to discuss further you can contact an Advisor directly by phone (1-800-324-9695) or online chat. [ Krissy  Jul 17, 2014 ]  Staff