We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Gray 4-conductor speaker wire on spool, 14AWG, 250ft

Monoprice Inc.

Monoprice Inc. 121551 Speaker Wire Burial Rated 4-Conductor 14AWG 250ft Gray

SKU CH-3T6W-E5YPC

Burial-rated 14 AWG speaker wire with four oxygen-free copper conductors in a moisture-resistant jacket, supplied as a 250 ft reel

  • Connector count2
  • Connector genderMale to Male
  • Product typeOthers
  • Product colorGray
  • Overall length76.2
  • Key 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.

How it compares

Measured against everything we stock in Speaker Wire & Speaker Cables, at today’s prices. Recalculated every night.

Price $199.99
Pricier than about 87% of the 295 comparable items (median $38.99).

New to this? Which coin should you pay with — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameMonoprice
Model name121551
Product typeOthers
Product colorGray
Ports & slots
Connector count2
Connector genderMale to Male

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.

More in Speaker Wire & Speaker Cables

Similar items