Extron SPK18/1000 (part number 22-150-03) — Extron's 18 AWG non-plenum speaker cable, wound 1,000 feet to a spool.

SPK 18 is the lightest of Extron's three bulk speaker gauges and the easiest to handle. For shorter loudspeaker drops, ceiling tap-offs, and the high cable counts that distributed audio projects generate, the smaller diameter pays off in how fast it routes. Electrically it follows the same recipe as the rest of the family: one pair of bare copper conductors, with a strand count set higher than comparable 18 AWG cable so the jacket stays supple. This part number is the non-plenum construction.

Key Capabilities

• One pair of bare copper conductors at 18 AWG
• Non-plenum SuperFlex jacket with sequential numbering
• Smallest gauge in the SPK bulk range, so it routes and terminates quickly
• 1,000 ft (305 m) spool in a self-dispensing box
• Higher strand count than comparable cable for flexibility on site
• Plenum version: Extron SPK18P/1000, part number 22-153-03

Where It Is Used

Distributed ceiling audio in offices, classrooms and retail, background music and paging systems with many short speaker drops, meeting-room wall speakers, and control-room monitors. Extron catalogues it with its Audio, Speaker & Control Cables alongside the STP20 and STP22 serial control and audio cable families.

Specifications at a Glance

• Conductor gauge: 18 AWG
• Conductors: two, bare copper, one pair
• Jacket: SuperFlex, non-plenum, sequentially numbered
• Spool: 1,000 ft (305 m), self-dispensing box
• Extron part number: 22-150-03

Also referenced as Extron SPK18/1000, SPK18-1000, SPK181000, SPK 18, SPK-18, part number 2215003.