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Infinity BassLink SM

8" compact powered under-seat subwoofer enclosure

34 Reviews

Item # 108BASSLSM

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Our take on the Infinity BassLink SM

Cars are getting smaller every year, and we've really noticed an upswing in the popularity of compact powered subwoofers. Now Infinity weighs in with their BassLink SM powered sub, and it'll deliver quality bass from spaces where you never thought a sub could go.

Infinity's take on a compact sub

Cars are getting smaller every year, and we've really noticed an upswing in the popularity of compact powered subwoofers. Now Infinity weighs in with their BassLink SM powered sub, and it'll deliver quality bass from spaces where you never thought a sub could go.

Infinity BassLink SM 8" powered under seat enclosure

The BassLink SM can deliver powerful bass from under your seat.

Infinity houses the BassLink SM in a slim-profile enclosure that's small enough to fit under the front seat in many vehicles. They designed the 8” shallow-profile woofer specifically for this compact enclosure, so you can count on superior efficiency and performance.

Made for tight spaces

The BassLink SM delivers 125 watts RMS to its sub with a Class D that hardly gets warm when it's working, so there's no worry about installing the BassLink SM  under your seat or in some other tight spaces.

The amp features a choice of controls to help you define your sound, including adjustable crossover frequency and bass boost. The BassLink SM also features low- and high-level inputs with an input load switch.

So deliver more bass to your space…with the Bass Link SM, you've got room for the boom.

Product Highlights:

  • powered subwoofer with heavy-duty ABS plastic enclosure
  • 8" shallow-profile woofer
  • Class D amplifier (125 watts RMS)
  • low-pass crossover variable from 50-120 Hz at 12 dB per octave
  • bass boost (0 to +9 dB at 70 Hz)
  • speaker and line-level inputs
  • frequency response: 35-120 Hz
  • dimensions: 13-9/16"W x 2-7/8"H x 10-1/16"D
  • warranty: 1 year
  • Our 60-day money-back guarantee

What's in the Box:

  • Amplified subwoofer
  • 20-amp ATO fuse (installed)
  • 7" Speaker level input harness
  • Four 2-1/2" Mounting screws
  • 3mm Allen head bit
  • Quick start guide

Purchased the BassLink because it was recommended by Crutchfield over the other similar powered subs. Fits nicely in the cabinet space of my VW Westfalia. Easy to install and Bass is noticeable even in the noisy camper.

John, East Olympia, WA


Infinity BassLink SM Reviews

Average Customer Review(s):

(34 Reviews)

Fits in 1980 VW Westfalia

John from East Olympia, WA on 1/10/2019

1990 Volkswagen Vanagon
Crutchfield Customer Review (What's this?)

Purchased the BassLink because it was recommended by Crutchfield over the other similar powered subs. Fits nicely in the cabinet space of my VW Westfalia. Easy to install and Bass is noticeable even in the noisy camper.

Pros: Small, easy to set up. Mounts securely with just 4 supplied screws.

Cons: Sorry I didn't order a second one for my Toyota Tacoma.

Great bass from a small package.

Crutchfield customer from Austin, TX on 12/29/2018

2014 Ford F-150 XLT
Crutchfield Customer Review (What's this?)

Fits just barely under the passenger seat. Just wanted bass to make a full stereo sound and this little guy nails it. Not overpowering, not truck shakiing, just full, complimentative lows. Wiring wasn't too hard and the settings are easy.

Pros: Easy to fit in tight spaces. Easy settings. Clean bass.

Cons: Screw holes are set in corners but floor of vehicles aren't always flat.

Infinity BassLink SM

Crutchfield customer from Koloa, HI on 12/21/2018

2013 Nissan Frontier SV
Crutchfield Customer Review (What's this?)

Pretty solid product



Small but Clear nice bass

Edward from Hemet, CA on 11/6/2018

Crutchfield Customer Review (What's this?)

I installed this little sub under my drivers seat in my 2015 Jeep Compass. This is not a Major Bass box. I didn't expect it to be either. But, I must say I am surprised on how much bass this little guy will put out. It does it without being Muddy too. I get so many compliments on this little box. People are always looking for my subwoofer and are completely surprised when I show them this little guy. It is great for someone that needs all the frequencies to be present in his system. This is not for a Bass head that needs to boom the car next to him.

Pros: It Fit under my drivers seat in my 2015 jeep compass. The bass won't chase you out of the jeep but, it is clear and hits pretty well for being a single 8". It fills in all the lower notes well and is never muddy.

Cons: It lasted one week past warranty period. Opened it up and the two filter Caps had cooked. 5 dollars later and a little solder and she is thumpin again.

Infinity BassLink SM

Duncan from Salem, OR on 10/30/2018

Crutchfield Customer Review (What's this?)

Since installing a more modern deck, my factory speakers have been lacking in the bass department. this was a perfect, easy addition to slip under the seat!



I need more power!!!

Horace from Douglasville, GA on 9/8/2018

2007 Chevrolet Avalanche
Crutchfield Customer Review (What's this?)

Nice product but it was not able to match up with my 4 JBL 6" door speakers. Installed in Chevy Avalanche (FYI). The door speakers are much louder. The BassLink SM was turned up to the max and I still could not hear clear bass the way it's meant to be heard. Scottie, I need more power!!! I'm giving her all she can take, captain. If I push her any harder, she going to blow!!! "One small step for Man." "One giant leap for Mankind." I want to go where no Man has gone before when I listen to my music.

Pros: Nice for a small car maybe. Not for larger vehicles. Just my opinion, I could be wrong.

Cons: Price is out of sight. Lunar orbit.

Good for rounding out a system

Jack from Burton, MI on 9/4/2018

2004 Dodge Stratus
Crutchfield Customer Review (What's this?)

Performs pretty well for such a compact system. I have it installed directly to the back of my Recaro racing seat, and it blends nicely with the 6 JL Audio CX1s in the vehicle. Provides good bass within the vehicle without annoying others at a stop light. I plan on buying another one to attach to the back of the passenger seat as well.

Pros: Compact Easy Install Good Midrange Bass

Cons: Flubs under 50hz

Infinity BassLink SM

David G. from Line Lxngtn, PA on 8/26/2018

Crutchfield Customer Review (What's this?)

It works well and is good quality.

Pros: Added a good thump


Infinity BassLink SM

Jim D from Dayton Ohio on 6/30/2018

Love mine! Professionally installed locally. In my Reg Cab 2018 Chevrolet. Amazing sound, wanted just a little more bump in my stock radio, got a lot more then expected! Wow, I a.m. amazed for such a little amp And 8" speaker, and pros who did the install.

Pros: Great for the price,

Cons: None / nothing negative about it.

Infinity BassLink SM

Crutchfield customer from West Fargo, ND on 6/7/2018

Crutchfield Customer Review (What's this?)

Very nice product. It puts out a nice amount of bass for its size.



Infinity BassLink SM

robert from Maysville, KY on 4/12/2018

2007 GMC Sierra
Crutchfield Customer Review (What's this?)

great bass in a tight space

Pros: its an infinity. thats all there is to say

Cons: none

Infinity BassLink SM

Kent from Loveland, CO on 3/24/2018

Crutchfield Customer Review (What's this?)

Just the extra bass punch I was looking for, well balanced and blends well with the rest of my sound system. I would have rated it higher, but the power and ground connections are wimpy.

Pros: Easy to install, good sound.

Cons: Wimpy power and ground connections.

Infinity BassLink SM

Brandon from Dundalk, MD on 3/10/2018

Crutchfield Customer Review (What's this?)

Very clean sounds a lot of bass for such a small sub it's great



Research Before You Buy!

Jason from Newport News, VA on 12/31/2017

2005 Toyota Tacoma
Crutchfield Customer Review (What's this?)

Awesome sound from underneath my seat! The punch fills up my Toyota truck and is very clean!. I purchased the higher end RCA cables as I have noticed that quality makes a difference. (Think about bottom shelf whiskey as opposed to top shelf). The installation was simple! I listen to EDM every now and again and it hits hard enough for me. Maybe it's because I'm thirty and I wanna be able to hear emergency vehicles outside of the cab, but that is all about preference! I'm not going to win a Bass competition on Saturday night in the Chick-fil-a parking lot, but my wife knows when I turned down our street and that's with the windows up! So, if you're an adult that enjoys some "thump" you will not be disappointed! If your parents still tell you to "Turn that racket down" as they BANG their broom above the basement (a.k.a. - your "rental"), it's not for you! Infinity is tried and true. I too was skeptical of a powered subwoofer! Believe me! But I am far beyond satisfied! Again, if you work 60+ hours a week, you'll appreciate the Basslink SM. I don't write too many reviews, but I hope the information I've provided is clear and geared towards music enthusiasts at both ends of the spectrum. Sorry if your offended, but thanks for reading!

Pros: Sound Ease of Installation Customer Service (Crutchfield)

Cons: None

great unit with decent power.

jake from Apopka, FL on 12/23/2017

Crutchfield Customer Review (What's this?)

This unit is fairly easy to install. Attention must be paid on the selection of the remote wire connection to the head unit. Otherwise piece of cake. I have a small car and the unit fits great under the passenger seat. The sound level is really nice without being too much. I find jazz to be the perfect music to listen to on this setup. I use a Kenwood 22 watt RMS x 4 head unit. and 4 really good Polk audio speakers all of which came from Crutchfield. Bottom line the instructions could be much clearer if they added a connection diagram. 4 out of 5 for me

Pros: Easy to adjust and add to existing stereo.

Cons: Instructions suffer from lack of connection diagram. leading to guessing. or trial and error.

Infinity BassLink SM

Crutchfield customer from Arnold, MO on 12/1/2017

Crutchfield Customer Review (What's this?)

my truck sounds awesome I'm happy



Infinity BassLink SM

Crutchfield customer from Corpus Christi, TX on 10/30/2017

Crutchfield Customer Review (What's this?)

I loved the unit but was not enough bass for me. Sadly I returned it and got a bigger subwoofer yet I would recommend it to anyone that needs low to mid level bass.



Awesome bass

Jeff from COLUMBIA FALLS, MT on 7/23/2017

Crutchfield Customer Review (What's this?)

I installed this unit under the rear seat in my Chevy Silverado. I'm amazed at the difference this made in the sound experience inside my truck. The install was very easy and the only thing that bugs me is that I should have done this sooner.

Pros: For me it was a simple install and the sound is amazing.

Cons: None

Boomy, grating mid-bass, no low-end punch

Guy from San Diego, CA on 6/7/2017

Installed the Basslink SM under the driver's seat to regain usable space in my 2012 Focus HB. I had been running an amp under the driver's seat and a separate sub in the rear hatch area. My first sub was an 8" Infinity in a sealed wedge-type enclosure. It was clean, tight, and punchy on the low end but took up a lot of room. I "upgraded" to a Pioneer sub that lays flat, allowing me to place groceries, etc. on top of it. It sounds OK, but the bass is flabby, not well-defined like the Infinity. Several reviewers felt the Basslink SM didn't produce enough output. I hoped that locating it in the passenger area would help make up for its lower output. I'm not looking to wake the neighbors, I want balanced, natural sound where I hear and feel the music as it was recorded. Getting rid of grating mid-bass boominess was a challenge with my previous subs, but with patience I was able to get them sounding clean and punchy by reducing the bass output on the factory radio by 2-3 clicks and adjusting the amp's Crossover, Gain and Bass Boost controls while listening to a wide range of music. This approach did not work with the Basslink SM, however, because I could not get enough gain out of the amp to compensate for turning down the radio's bass output. YMMV, depending on placement/mounting location and considerations like an aftermarket radio with EQ controls and dedicated subwoofer output (more tuning options).

Pros: Small, fits easily under seat

Cons: Unable to get clean, punchy, bass in my application

Infinity BassLink SM

Crutchfield customer from Doylestown, PA on 4/25/2017

Crutchfield Customer Review (What's this?)




Great performance for the size/price

Rob from TN on 10/25/2016

Bought this for my Nissan Titan (Quadcab) and installed under drivers seat and got amazing results. With that said, I do have an aftermarket Kenwood head unit so that may have some bearing on its strong performance. It provides all the low end I need/wanted. I did have to get some help tweaking the settings on the unit itself since I'm no audio expert, and those adjustments did make a noticeable difference. I'm extremely pleased with the performance and footprint of the unit.

Pros: Great performance for the price and size just the right level of bass for me excellent sound quality

Cons: Needed help tweaking/adjusting settings won't rattle the windows (if that's what you're looking for)

Infinity BassLink SM

Crutchfield customer from Tower City, ND on 9/27/2016

Crutchfield Customer Review (What's this?)

Just that little bit extra bottom end that my system needed. It has nice controls, adjustable crossover especially. I like it a lot.



Not Quite Enough

Tom from Titusville, FL on 9/7/2016

Crutchfield Customer Review (What's this?)

Was a little disappointed but have to take into consideration it's size and therefor it's limitations. It's installed underneath my driver's seat in my truck and just not what I was looking for. I will continue to test drive it but so far unable to get the tight bass that I was looking for.

Pros: Build Quality and Design

Cons: Not enough.

Infinity basslink

Dave from Scottsboro, AL on 8/26/2016

Crutchfield Customer Review (What's this?)

Well, I read several reviews for the infinity Basslink. I should have taken them more literally. I.e. Reviews all suggested the product was best suited as a light supplement to your system rather that a strong sub-woofer component. The sounds from the basslink are good quality just not much volume. My intent was to install it in the trunk and drop the back seats which open into the trunk. I temp hooked it up spent hour or so adjusting the controls . Just could not get enough volume to really discern it's presents from sitting in front seat. so if you want strong bass try something else. I hate to return products but I made request from Crutchfield to return the item, printed the return label sent it back. Got refund promptly. Today's retailers don't understand customer service. Crutchfield does. They have earned my future business. Kudos. Boat sounds are next up. I see Crutchfield has the products I want. Thanks for making me happy!

Pros: Small and compact attractive style.

Cons: Very low volume output.


Jacob from Aberdeen, SD on 7/9/2016

2005 Ford Mustang

Great overall speaker. Love the distinction and got pretty good bass for just a small area.

Pros: I haven't run into any problems with this product yet.


Excellent product!

Conner E from Madison WI on 6/25/2016

2005 Subaru Forester
Crutchfield Customer Review (What's this?)

Great product, was easy to install into my forester with upgraded head unit, really added a decent amount of extra bass to my upgraded speakers!



Infinity BassLink

Michael from Portland, OR on 6/1/2016

2001 Ford F-150
Crutchfield Customer Review (What's this?)

Does a great job filling in what was missing in my JBL door speakers. Not over powering. Nice for the small space that I have and easy to setup.

Pros: Fits the small space that I have with good bottom end.

Cons: none

Don't let the small size fool you

Crutchfield customer from Dodge City, KS on 5/5/2016

2004 Chevrolet Silverado 1500
Crutchfield Customer Review (What's this?)

Just installed this and am so far very impressed. It doesn't blow the windows out, but does put out a good amount of bass. I wasn't looking for something to stop hearts. It is very comparable to the Bose system in our 2012 Yukon. That's what I wanted.

Pros: Ease of installation, amount of bass output for not a lot of money.

Cons: None yet

Infinity Basslink SM

Jake C. from Winchester, VA on 4/25/2016

1994 Mazda B Series
Crutchfield Customer Review (What's this?)

Works perfectly mounted behind a single cab bench seat. I layed dynamat down behind it and it makes great noise with very low rattle. It does not produce a crazy amount of bass, but is ideal for small compact cars or trucks that don't need a lot.

Pros: Very Slim design, good sound, and easy install.

Cons: A little too pricey

Pretty good bass for the Infinity BassLink SM

Marcus Silva from Allentown, PA on 4/15/2016

Crutchfield Customer Review (What's this?)

Quick backstory: I have a convertible vehicle with a bone stock audio system that actually sounds pretty fine on it's own, but it lacks my oh-so needed and totally required "boom boom" (bass). In this limit spaced car I needed something fairly inexpensive, reliable, and good quality. After about 2 weeks of research, I came down between the JBL Shallowmount and the Infinity Shallowmount. Honestly, I've went with the Infinity because I've bought subs and speakers from them in the past. Personal opinion and use: It's no "regular" Infinity Basslink, and definitely won't wake the neighbors up, but it still shakes the mirrors and gives me a back massage... And that oh-so needed oomph that was lacking. Being in a 2 seater, I put it behind my seat and lifted it up using one of the foam pieces the sub came with. Hasn't moved since and fills more of the cabin space with sound being raised up. I feel with it being under a seat, one wouldn't be experience it's true finesse. For the most part it's loud and rumbling, but I feel that it would sound better if connected to a separate amp and possibly a better head unit.

Pros: Sounds fantastic Fits practically anywhere Takes up no space Very easy installation Lots of potential features "Audio-sense", "Bass controllers", etc. Another reliable piece from infinity, especially for the price.

Cons: It just doesn't rattle your brain. Would only recommend if you want to save space or have limited space.

rocks the body that rocks the body

Frank from pikeville, KY on 2/1/2016

Crutchfield Customer Review (What's this?)

just what was needed to complete the sound in a porsche 928 hatchback.......not too gangsta but just enough to rock the body.....

Pros: ease of install, fits multiple areas. reasonable price.

Cons: remote switch not included.......may not really be needed though....

Excellent product!

CoreyW from Texas on 1/10/2016

Crutchfield Customer Review (What's this?)

Mounted perfectly under the backseat of my truck, gives the perfect amount of bass, very nice, clean, well made, space saving unit out there. Infinity never fails in quality and performance.

Pros: Great sound, space saving, and affordable.

Cons: None.

Maybe I received a bad one:/

Nick from Florida on 1/3/2016

Received my infinity soundlink for Christmas and hooked it up asap. Looked great and I had huge expectations for it. I was super excited to hear a nice thump from it. When I first turned it on I knew there was something wrong though, I could hear a nasty rattle in the internals of the bass link sm. Though hearing that rattle I can still feel and hear the bass coming from this little thing. Great looking product wish it sounded as good as it looks. Maybe mine was broken. Crutchfield helped me with an exchange right away for a kicker 10 comp though. It wouldn't hurt to try this sub if your in love!

Pros: Looks.. Versatility

Cons: Soft bass , don't expect much from this 8. Rattle

Perfect Fit!

Crutchfield customer from Virginia on 12/27/2015

Crutchfield Customer Review (What's this?)

Big sound in a small package! This fit perfectly in the rear cargo area of my Magnum, and once I got the sound levels dialed in it pushes out the perfect amount of bass. I previously had the original Infinity BassLink but wanted something that I could put ou of the way and didn't take up as much space...this fit the bill perfectly, and puts out great sound.

Pros: Size, sound

Cons: Nothing yet...


Hands-on research

Features and Specs

Enclosure Type Sealed
Finish Material ABS
Grille Steel
Connector Type RCA/Harness
Bi-amp Inputs No
Woofer Size (inches) 8
Woofer Material
Passive Radiator ---
Width 13-9/16"
Height 2-7/8"
Depth 10-1/16"
Second Depth N/A
Parts Warranty 1 Year
Labor Warranty 1 Year
Frequency Response 35-120
Amplifier Power (RMS) 125 watts
Maximum Wattage N/A
Sensitivity N/A
Impedance N/A
Second Voice Coil Impedance N/A
Crossover Point 50-120

Product Research


Mounting: The subwoofer, with its height under 2-7/8", can be mounted flat under a seat in the passenger compartment of many vehicles.

Auto Turn-On: When the speaker level inputs are used, the system can automatically turn on and off by sensing the voltage on the speaker input. If you prefer, auto turn-on can be turned off, so the amp turns on/off using the wired remote terminal.

Note: The auto turn-on feature does not operate when the preamp level inputs are used.

Low-Pass Crossover: The low-pass crossover slope is 12dB/octave and the crossover point is variable from 50 Hz to 120 Hz.

Bass Boost: The amplifier includes a continuously variable bass boost circuit, 0 dB to +9 dB centered at 70Hz.


  • Power: the power (+12V), ground, and remote turn-on connections are on a terminal strip; each screw terminal is approximately 0.34" wide; Infinity recommends 12-gauge (minimum) power and ground wires
  • Line Level Input: left and right female RCA preamp level inputs
  • Speaker Level Input: 4-pin port for the included speaker input harness
  • Fuse: 20-amp ATO fuse installed
  • Remote: RJ-14 jack for an optional wired remote (item number 108RBC, sold separately)


  • Audio Sense: two position switch; set to On when using speaker level inputs to engage the auto turn-on circuit
  • Input Load: two position switch, active only when using speaker level inputs; offers compatibility with a wide range of aftermarket and factory radios
  • Crossover: rotary control; sets low-pass crossover point; continuously variable from 50 Hz to 120 Hz
  • Phase: two position switch; select normal (0°) or reverse (180°)
  • Level: rotary control; gain variable from 200mV to 2V when using line level inputs, 2V to 20V when using speaker level inputs
  • Bass Boost: rotary control; bass boost level variable from 0dB to +9dB, centered at 70Hz

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.