AudioQuest Black Lab

Subwoofer cable (8 meters/26.2 feet)

Item #: 703BLAB8M

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21 Reviews

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Help your subwoofer sound its best

AudioQuest Black Lab

AudioQuest's Black Lab cable delivers all the deep bass goodness your powered subwoofer is capable of. This cable features two identical conductors, and each conductor is a single, unbroken strand of AudioQuest's high-purity Long-Grain Copper. Solid conductors eliminate electrical and magnetic interference that can make multi-strand conductor cables sound brittle.

High-quality connectors eliminate the weakest link

Black Lab features RCA connectors made of gold-plated copper. The connectors are fastened by cold welding — a solder-less process that uses high pressure and silver paste to minimize signal loss. By contrast, solder tends to impede the signal, and heating the copper conductor can negatively affect its performance.

Product Highlights:

  • two solid Long-Grain Copper conductors eliminate "strand-interaction" distortion
  • air-filled foamed-polyethylene insulation minimizes energy storage and its associated distortion
  • 100% coverage metal shield with AQ's Noise Dissipation System to resist RFI interference
  • cold-welded gold-plated RCA connectors for reliability and resistance to corrosion
  • built-in ground wire with spade lugs to prevent hum
  • smooth PVC jacket
  • warranty: 5 years
  • Our 60-day money-back guarantee

AudioQuest Black Lab Reviews

Average Customer Review:

21 reviews
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Wonderful Product

Written By Robert - Boyne City, Michigan on Friday, November 27, 2015

Crutchfield Customer Review (What's this?)

Very well made sturdy cables

Pros: great product

Cons: none

Decent AV Accessory

Written By HBarker_Stroudsburg_PA, Pennsylvania on Saturday, November 21, 2015

Crutchfield Customer Review (What's this?)

Nice cable that has a decent length that facilitates speaker placement in the listening area. It made a distinct difference in the sub woofers performance.

Pros: Price is not excessive and the addition of grounding wires can prevent humming noise issues that occurs with other cables.

7.2 Surround

Written By Anonymous, North Carolina on Tuesday, November 17, 2015

Crutchfield Customer Review (What's this?)

I have the (255C-RT) and in walls (RC55i's) and 2 Polk Subs (PSW 108 and 111) for a 7.2 effect. It's a great combo for the size of room I have!

Good Quality Cable

Written By Jim, Denver, CO on Tuesday, October 27, 2015

Crutchfield Customer Review (What's this?)

I was very pleased with this cable. The sound quality is great and it is flexible enough for tight spaces.

Pros: Quality of construction and sound.

Cons: Cost

Just a great wire

Written By Dad, Washington on Sunday, October 18, 2015

Crutchfield Customer Review (What's this?)

I needed a subwoofer wire and this is what was recommended by advisor and they work great

Pros: Simple as can be great functioning

Cons: The only downside is I wish they would make this in a shorter wire the sub woofer is right beside the wall and it would be nice to have a short subwoofer wire

Subwoofer Cord

Written By SteveL, Ohio on Sunday, July 26, 2015

Crutchfield Customer Review (What's this?)

Great product!

Great cable

Written By Flodon, Menomonee Falls on Wednesday, June 03, 2015

Crutchfield Customer Review (What's this?)

Great cable - sound quality is fantastic, and the cable was relatively easy to feed through the wall.

Worked great after install with SoundSystem

Written By renee, Georgia on Friday, April 10, 2015

Crutchfield Customer Review (What's this?)

needed the cord for Samsung HD 4k TV and Subwoofer. Worked perfect after install. RAdio Shack cords didn't work as well. had to return.

AudioQuest black lab subwoofer cable

Written By Anonymous, Petaluma California on Friday, April 03, 2015

Crutchfield Customer Review (What's this?)

Awesome subwoofer cable made my subwoofer sound twice as loud and clear. Another great product from AudioQuest. Also thank you for the great customer service from Crutchfield.

Pros: Better sound

Cons: None

Black Lab

Written By Anonymous, Rhode Island on Thursday, January 22, 2015

Crutchfield Customer Review (What's this?)

Works Great with My new Sub. Produces great Quality

Great Cable

Written By Mark L., California on Monday, January 19, 2015

Crutchfield Customer Review (What's this?)

This is a amazing cable and you get what you pay for. All my cables for my home theater system are Audio Quest and yes good cables make a big difference in picture and sound. Thank you Crutchfield

Pros: Only Audio Quest

Black Lab

Written By Brian, New Jersey on Sunday, January 18, 2015

Crutchfield Customer Review (What's this?)

No hum. Quality cable

Amazing cable

Written By Matt, Queens, New York on Sunday, January 11, 2015

Crutchfield Customer Review (What's this?)

Great subwoofer cable. Worth the extra money . Can defiantly hear the different from the last cable I bought.

Pros: Great value. Nice thick cable.

Cons: Nothing as of yet.

Very nice cable

Written By Dan, West Virginia on Monday, January 05, 2015

Crutchfield Customer Review (What's this?)

Very nice quality, and does its job very nicely. No hums, statics or problems what so ever. Highly recommend.

Pros: No hums, or static. And seems to be nice quality.

Cons: none, wish I would have got a longer one:P

Audio Quest

Written By Mark, Nebraska City on Monday, December 29, 2014

Crutchfield Customer Review (What's this?)

New to Audioquest but the cables seem to do well.

Pros: New to brand so still listening

Cons: None

Audio Quest Black Lab

Written By Lee H., Atlanta, Ga on Saturday, November 29, 2014

Crutchfield Customer Review (What's this?)

Great speaker wires! Crutchfield gave me a good recommendation!

Pros: Good Clarity

Cons: None

AudioQuest Black Lab

Written By Anonymous, ca on Saturday, November 08, 2014

Crutchfield Customer Review (What's this?)

Exactly what I ordered

Great Sub Cable

Written By KW, Austin, TX on Tuesday, September 09, 2014

Crutchfield Customer Review (What's this?)

No hum, just great sound!

AudioQuest Black Lab

Written By JB, Shingle Springs, CA on Thursday, September 04, 2014

Crutchfield Customer Review (What's this?)

Great sound! Worth the price!

Pros: Great sound

Cons: Wish it were less expensive...but worth it for the great sound quality

Go Bye-Bye Hum

Written By BUBS, Charlottesville, VA on Monday, June 23, 2014

A few months ago I purchased a powered sub-woofer (from Crutchfield). After hooking up to an old sub-woofer cable which ran ~ 35 feet under my living room, I noticed a hum in certain locations of the room. With the advice of my Crutchfield salesperson, I began adjusting the amount of gain and low pass frequency on the new sub-woofer. This seemed to work on and off for a few days. However, since this humming annoyance continued to repeat itself, my salesperson had me examine the old cable and I noticed the end from the receiver differed from the end going to the sub-woofer. This wiring had been installed by someone else and there was a short extension cable at both ends of the sub-woofer cable to meet the distance required! So my salesperson had just the answer with this 39.4 foot Audio Quest Black Lab cable. Since then I have thoroughly enjoyed great bass and freedom from hum! ZILCH! I also think the price for this lengthy cable was very reasonable and I might add even better with some reward points!

Pros: Not bulky or "stiff" so easy to thread through a small hole to run beneath a floor and be out of view. Allows for a clean and "healthy" bass sound with no hum or interference.

Cons: None to date.

AudioQuest Black Lab Subwoofer Cable

Written By Alex, Great Bend KS on Tuesday, May 27, 2014

Crutchfield Customer Review (What's this?)

So far so good. The Sub sounds great! Good quality cable.

Pros: Great quality, and great sound from my sub.

Cons: None

Hands-on research

What's in the box?

  • 26.25' Mono-RCA subwoofer cable (w/ a male RCA connector and 8" ground wire on each end)

Product Research


Solid Long-Grain Copper (LGC) Conductors: Solid conductors eliminate strand-interaction distortion. Black Lab's solid Long-Grain Copper allows a smoother and clearer sound than cables using regular OFHC (Oxygen-Free High-Conductivity) copper. OFHC is a general metal industry specification regarding "loss" without any concern for distortion. LGC has fewer oxides within the conducting material, less impurities, less grain boundaries, and definitively better performance.

Foamed-Polyethylene Insulation: Black Lab uses air-filled Foamed-Polyethylene Insulation on both conductors because air absorbs next to no energy and Polyethylene is low-loss and has a benign distortion profile. Thanks to all the air in Foamed-PE, it causes much less of the out-of-focus effect common to other materials.

Metal-Layer Noise-Dissipation System (NDS): AudioQuest's Noise-Dissipation System prevents a significant amount of RFI from reaching the equipment's ground plane.

Symmetrical Coax Geometry: Identical positive (+) and negative (-) conductors prevent the shield being used as an inferior audio conductor.

Cold-Welded Gold-Plated Plugs: This plug design allows for a connection without the use of solder, which is a common source of distortion. Because the ground shells are stamped instead of machined, the metal can be chosen for low distortion instead of machinability.

Grounding: If you hear noticeable hum in your system after connecting your subwoofer, please attach the subwoofer cable's ground leads to your audio gear. Some audio equipment have a ground (GND) connection on the back-panel, if not, attach the ground spade lugs to any screw on the equipment chassis of both the source and the subwoofer. Usually, this wire will not need to be connected.

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.

Looking for more? Check out the next model in this lineup.

Audioquest  Irish red  8 meter subwoofer cable

Get a subwoofer cable with silver-plated conductors for superior sound.

The AudioQuest Irish Red offers these features:

silver-plated solid copper conductors for superior sound quality (silver layer is 0.5% of total conductor)

red-striped PVC jacket