Monoprice Inc.
Monoprice Inc. 121551 Speaker Wire Burial Rated 4-Conductor 14AWG 250ft Gray
Burial-rated 14 AWG speaker wire with four oxygen-free copper conductors in a moisture-resistant jacket, supplied as a 250 ft reel
- TypeOthers
- ColorGray
- Length76.2
- Connector Number2
- Terminal GenderMale to Male
- FeaturesBuy with Confidence: With Monoprice's Lifetime Warranty on a
- Burial-rated jacket protects conductors from moisture and soil ingress
- 100 percent oxygen-free copper delivers low-resistance signal transfer
- Four color-coded conductors simplify dual-speaker wiring runs
- 250 ft spool covers long-distance outdoor installations
- Lifetime warranty backs long-term reliability
Outdoor Burial Speaker Wire
Monoprice 121551 is a four-conductor 14AWG cable built for direct burial in outdoor audio installations. The 250-foot gray spool uses 100 percent oxygen-free copper conductors inside a moisture-resistant polyethylene jacket with water-blocking tape. It suits residential and commercial runs where cable must survive soil contact and weather.
Upgrade from Indoor-Rated Cable
Standard indoor speaker wire lacks the polyethylene jacket and water-blocking tape that stop moisture ingress underground. The jump is worth it when you run cable through trenches, conduit or landscape beds where dampness would corrode bare copper and degrade signal over time. Indoor cable in those conditions fails prematurely and creates intermittent faults.
Simple Direct Burial Install
Lay the wire in the trench and backfill; no conduit is required because the jacket is burial rated. Color-coded conductors help you match polarity at both ends without confusion. The main thing that goes wrong is nicking the outer jacket while pulling, which lets water reach the conductors and eventually causes corrosion.
Highlights
- Burial-rated jacket protects conductors from moisture and soil ingress
- 100 percent oxygen-free copper delivers low-resistance signal transfer
- Four color-coded conductors simplify dual-speaker wiring runs
- 250 ft spool covers long-distance outdoor installations
- Lifetime warranty backs long-term reliability
Specifications
| Brand | Monoprice |
|---|---|
| Model | 121551 |
| Type | Others |
| Color | Gray |
| Length | 76.2 |
| Connector Number | 2 |
| Terminal Gender | Male to Male |
| Features | Buy with Confidence: With Monoprice's Lifetime Warranty on all Cables, you can rest assured we stand behind our products and our customers. |
Questions about this item
What conduit size or trench depth does the 14AWG burial-rated cable require?
The 14AWG cable has a moisture-resistant polyethylene jacket and water-blocking tape for direct burial; follow local electrical codes for trench depth and conduit sizing.
How do I identify and connect the four color-coded conductors during installation?
The four conductors are individually color-coded inside the outer jacket; strip the main jacket, match each color to the corresponding amplifier and speaker terminals, and secure all connections.
How do I inspect the oxygen-free copper conductors for corrosion over time?
The direct-burial jacket and water-blocking tape protect the 100% oxygen-free copper from moisture; inspect exposed termination points periodically and re-seal if the jacket is damaged.
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