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Helix Blue B5X

5-1/4" 2-way car speakers

14 Reviews

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Item # 975B5X

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Our take on the Helix Blue B5X

Helix builds their low-profile Blue Series speakers to fit into more factory speaker locations while maintaining their high standards for sound quality. Helix earned its reputation by paying attention to the details, and these speakers really uphold the family name.

Blue Series B5X 5-1/4German engineering meets car audio

Helix builds their low-profile Blue Series speakers to fit into more factory speaker locations while maintaining their high standards for sound quality. Helix earned its reputation by paying attention to the details, and these speakers really uphold the family name.

The drivers

You'll hear excellent high-frequency detail from the 1/2" Mylar dome tweeter, while the polypropylene woofer supplies solid, punchy bass. If you want to enjoy the little details in your music without breaking the bank, you'll want to check out these Helix speakers. Grilles are included.

Product Highlights:

  • 5-1/4" 2-way speakers (pair)
  • injection-molded polypropylene woofer cone with urethane surround
  • 1/2" Mylar dome tweeter
  • power range: 5-35 watts RMS (100 watts peak power)
  • frequency response: 70-22,000 Hz
  • sensitivity: 90 dB
  • top-mount depth: 2"
  • grilles included
  • warranty: 2 years
  • Our 60-day money-back guarantee

Speakers arrived quickly and as described. The sound is so much better than original equip.

old man river, Asheville, NC

What's in the Box:

  • Two 2-way speakers
  • 2 Grilles
  • 8 Speed clips
  • Eight 1" Self-tapping screws
  • Two 10' Lengths of speaker wire (female quick-slides on one end and tinned wire on other)
  • Instruction manual (English/ German)
  • Template

Helix Blue B5X Reviews

Average Customer Review(s):

(14 Reviews)

Great Sound

old man river from Asheville, NC on 10/29/2014

1992 Chrysler Lebaron
Crutchfield Customer Review (What's this?)

Speakers arrived quickly and as described. The sound is so much better than original equip.

Pros: Good Fit Great Sound Quality Good Price

Cons: None

5.25" Speakers

KurtM from SLC, Ut on 9/26/2014

1993 Chrysler Lebaron
Crutchfield Customer Review (What's this?)

Purchased for a really nice 1993 Chrysler LeBaron convertible. The speakers fit in the door pockets fine, but the screw holes were about .25" too small to match up with the original holes so I had to drill one new hole. They are nice rugged speakers, seem to be well built .

Pros: Great mid and treble through tweeter.

Cons: No bass at all. Very muddy when sound is turned up. I even installed an amp and the bass is just awful.

Does not fit 2014 Accord!

dror from NYC on 2/22/2014

2014 Honda Accord
Crutchfield Customer Review (What's this?)

These speakers might be good for a very small car, they are listed as good fit for 2014 Accord, they are much smaller than the original speakers, even with the bracket they do not fit simply because you'll be left with a big gap around the speaker! After spending 3 hours dissembling the front door and desperately trying to make it fit, it simply did not work and I'm returning them.

Pros: they did not fit my car!

Cons: they did not fit my car, 2014 Accord


fshnfool from mt holly nc on 8/11/2013

2008 Chevrolet Cobalt
Crutchfield Customer Review (What's this?)

excellent sound for the money

Pros: .

Cons: .

For Chevy Avalanche

firemarshalbill from West Newbury Ma on 8/5/2013

Crutchfield Customer Review (What's this?)

Sound is great install was simple

Pros: Great sound

Cons: none


Danny from VAncouver, WA on 5/6/2013

1983 Mercedes-Benz 300D-T
Crutchfield Customer Review (What's this?)

I installed these in my 1983 300D Mercedes. I would have givin these speakers 5 stars if I could have used my OEM grills.

Pros: great sound

Cons: These speakers are a little to big to fit in the OEM holes.Had to rip out speaker hole supports and could not use OEM speaker grills.

Great Highs

Jimmy A. from Puerto Rico on 4/22/2013

2006 Porsche Boxster
Crutchfield Customer Review (What's this?)

I replaced my door speakers with the Helix B5X 5.5 inches. I found that they have excellent high tones. I am not impressed with low tones. Actually if I increase to much the bass the sound distorted. If you have larger drivers in your car these are a great addition, otherwise they do not provide enough bass by themselves.

Pros: High and mid tones.

Cons: Low tones.

good replacement speakers

ldrmanbgft from Stuarts Draft, VA on 4/21/2013

Good repalscement speakers for my 98 Volvo V70 XC AWD. A whole lot better than the stock speakers. Decent bass, but, if you want thumping bass, then you better get a sub-woofer, as I plan to do in the near future. Overall, I am very satisfied with them.




TomG from Massachusetts on 4/3/2013

2002 Chevrolet Silverado 2500/3500
Crutchfield Customer Review (What's this?)

Great sound



Good sound

Mark from redondo beach, ca on 3/27/2013

2004 Chevrolet Silverado 2500/3500
Crutchfield Customer Review (What's this?)

Very good sound, Installed in my 04 Chevy HD the installation was easy and took about an hour...

Pros: sound, price, easy install..

Cons: 0


kjacksonmusic from Florida on 3/13/2013

1998 Jeep Cherokee
Crutchfield Customer Review (What's this?)

these speakers were a huge improvement over my 70$ a pair kenwood 6 1/4" speakers, yes even though those were a inch or so larger, these have a much better and more sensitive response. I don't believe I will put another brand of speaker in my car again.

Pros: Great sound, easy install. Looks good.

Cons: NONE


johnny_n from Kansas City, Mo. on 1/30/2013

1997 Audi A4
Crutchfield Customer Review (What's this?)

The sound of these speakers is incredible. Another great recommendation from Crutchfield!

Pros: Fantastic sound, beautiful build, they are works of art, good price for the quality

Cons: None


bert from columbus, ohio on 12/27/2012

2007 Suzuki Reno
Crutchfield Customer Review (What's this?)

Great bass n sound overall



Wicked speakers

Ryan from Massachussets on 9/9/2012

2005 Hyundai Accent
Crutchfield Customer Review (What's this?)

I ordered these speakers for my 05 accent coupe and I have to admit that these speakers are awesome. The 5 1/4 speakers are not "bassie" like a 6x9 is, however with a little tweaking and a few minuets you can tune in the sound with your head unit and get some decent results. If you have a car like mine with a relatively small interior volume, these speakers will make a big difference. If your looking for a bit more bass but not quite enough to shatter windows as you drive down your street take a look at the sound ordinance bt-8 for a better listening experience. If you have any further doubts about the helix b5x, just try them out I'm happy that I did

Pros: Great sound

Cons: No wiring harness, you'll have to hard wire these in to your factory system. It's easy as pie if you have a soldering iron


Hands-on research

Features and Specs

Speaker Size
Design 2-way
Tweeter Design 1/2" Dome
Impedance (Ohms) 4
Tweeter Composition Mylar
Woofer Composition Injected Polypropylene
Woofer Surround Urethane Foam
Parts Warranty 2 Years
Labor Warranty 2 Years
Sensitivity (1W at 1 meter) 90
Sensitivity at 2.83 volts N/A
Frequency Response 70 - 22k Hz
Minimum RMS Wattage 5
Maximum RMS Wattage 35
Peak Power Handling (Watts) 100
Top-mount Depth (Inches) 2
Bottom-mount Depth (Inches) 2 1/4
Cutout Diameter or Length (inches) 4 3/4

Product Research


Woofer Materials: Each woofer cone is made of Injection-Molded Polypropylene. This process of cone molding assures a uniform cone thickness for superior linearity and clarity. It is also lighter weight and more rigid for decreased distortion and improved bass response.

Mylar Tweeters: Each speaker has a 1/2" Mylar dome tweeter for clean, accurate highs.

Magnet cover: The B 5X are shipped with a rubber magnet cover to protect the speaker. If the cover is removed the depth changes slightly:

  • Top Mount Depth: 1.867"
  • Bottom Mount Depth: 2.099"

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.