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NVX XWS0820

20 ft 8-Gauge EnvyFlex 100% Oxygen Free Copper Speaker Wire (Blue/Gray)

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• True Spec 8 gauge EnvyFlex Speaker Wire
• Silver-tinned OFC (100% Oxygen-Free Copper) material
• Color: Blue and Gray
• Translucent EnvyFlex flexible multi-strand construction

Learn more about the xws0820
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2026-07-27 11:08:20
List price $64.99
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-23%

$49.99

 with warranty
4 payments of $13

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NVX - Worth the Envy - Direct to Consumer Car Audio

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Description


NVX brand icon

Authorized dealer

Product Details:

  • True Spec 8 gauge EnvyFlex Speaker Wire
  • Made from silver-tinned OFC (100% Oxygen-Free Copper) material
  • Twisted-pair technology eliminates noise for crystal clear sound
  • True to gauge for reliable power handling and secure fit
  • Flexible multi-strand cable bends and twists for easy installation
  • Jacket can be cut and the wire split
  • Durable translucent jacket protects against damage
  • Full spec cable is true to gauge
  • BC-5W2 compliant
  • Strand count: 294
  • Color: Blue and Gray
  • Length: 20 feet
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

Frequently Asked Questions (FAQ)


Do not trim the copper strands, as this reduces power flow. Instead, use 8-gauge wire ferrules or pin connectors. These crimp onto the wire end, creating a slim, solid tip that fits securely into standard terminal blocks.
No, but consistency is key. To ensure your speakers are "in phase," always use the square-shaped jacket for the positive (+) terminals and the round jacket for negative (-) on both the amplifier and the speaker ends.
This is often caused by a loose connection. Because this wire is heavy, gravity can pull it out of spring terminals. Ensure the terminals are clamped tightly on the bare copper strands, not the blue translucent insulation.
The "grabby" nature of high-quality PVC can be tricky. Lightly dust the wire jacket with talcum powder or use nylon wire loom before routing. This reduces friction, allowing the wire to slide easily through tight interior panels.
Yes, but it is optimized for high-wattage subwoofers. For door speakers, ensure your door boots have enough clearance. If the wire is too stiff for door hinges, use a distribution block to transition to a smaller gauge for the final run.

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Specifications & Details


Speaker Wire
Wire / Cable Type
Speaker Wire
Twisted Pair Wire
Yes
Length (ft.)
20 feet
Wire Gauge
8 gauge
Primary Color
Blue
Secondary Color
Black
Wire Material
OFC (100% Oxygen-Free Copper)
Complies to AWG Standards
Yes
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Manufacturer

Item Details


Manufacturer:

NVX

Model Number:

XWS0820

Weight:

3.00lbs

Internal SKU:

xws0820

Internal Product ID:

72372

Customer Ratings & Reviews


NVX XWS0820 thumbnail image

5 star
89%
4 star
9%
3 star
2%
2 star
0%
1 star
0%



Durability
5
Value
4.9
Features
5
Design
4.9
Usability
5

Customer Photos & Videos


Customer Reviews

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Good solid product

It is not easy to find good quality heavy guage(10~8 awg) speaker wire. You will not find products like this one at your local Best Buy. With 8awg silver tinned copper as the conductor, I don't think there's anything better out there for the price. At the time of this review, I was able to purchase 20ft of this cable for $50 on ebay. At that price point, if needed, I would make this purchase again in a heart-beat. If you are interested in this product, buy without hesitation. And, to the manufacturer: please do everything in your power to keep supplying us with this quality product for the same price!

By Satisfied customer on June 9, 2014

119 found this helpful


It's speaker wire built with quality

This is very definitely not cheap wire. Flexible, no corrosion so far, great power delivery and looks good with a premium feel. Not much else to say about speaker cable.

By Devyn on May 11, 2014

115 found this helpful


Good quality

This is the best power cable, it flexed like a charm.
Buy it you will not regret it.

By ishwar on May 4, 2014

114 found this helpful


Good quality

This is the best power cable, it flexed like a charm.
Buy it you would not regret

By ishwar on May 4, 2014

114 found this helpful


Great Product !!

This wire is silver tinned IFC and is true to spec. Heavy duty jack and a high strand count for easy installation. Best wire I have ever purchased!
High Quality!.. I will Buy again for sure

By marcelo on October 24, 2013

111 found this helpful


best speaker cable ever!

By far the best speaker wire I have ever used. I'm running it fome my kicker 300.1 ( just a filler until I get kx 1600.1) to my dule kicker comp r 12" and those things ate now hitting so much harder, its like the wire game me like 50rms watts more! If you want a high quality high flex cable this is the one.

By Niko on September 19, 2014

103 found this helpful


Great quality wire

This wire is so big, unfortunately I had to cut a few strands out to fit into my speaker terminals on my DC xl. I suppose it's not bad to have to much rather than not enough when it comes to wire size. I've always been impressed with NVX and their products. This is no exception.

By Mike on February 14, 2015

102 found this helpful


Expensive but WELL worth it

I was hesitant to spend $50 on mere speaker wire, even if it was 8 Gauge. I will say that after installing it I am extremely satisfied with it. It is a great quality wire, very flexible, and easy to work with. Now I can rest assured that my Subs are getting every milli-watt my amplifier throws to them.

By Newton on June 12, 2015 Checkmark Icon Verified purchase

71 found this helpful


nvx cable

awesome product only thing I don't like is the fact that one side of the wire is square so doesn't make it easy to work with overall great product

By rafael on September 17, 2015 Checkmark Icon Verified purchase

63 found this helpful


NVX XWS0820

Exelent wire do the best performance on speaker audio performance

By Home custom on September 1, 2020

55 found this helpful



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