Locating the serial number

Serial numbers are 17-digits long following “S/N” and contain letters and numbers.

Example

See the product categories below to find your product and the serial number location.

Headphones

In-ear
(original packaging)

Over-ear
(inside ear cup)

Wireless Speakers

SoundLink Color II and SoundLink Mini II

(bottom)

SoundLink Bluetooth Speaker III

(bottom)

SoundTouch 10

(bottom)

SoundTouch 20 and 30

(back)

SoundTouch SA-5 Amplifier

(bottom)

SoundTouch wireless link adapter

(bottom)

Home Theater Systems

Lifestyle home entertainment systems

(bottom of control console)

Soundbar systems

(back or bottom)

Acoustimass 300 wireless bass module

(bottom)

Virtually Invisible 300 wireless surround speakers

(bottom of receiver)

Acoustimass home theater speaker systems

(back)

Wave systems

Wave Music systems

(bottom)

Acoustic Wave music systems

(back)

Docking speakers

  • SoundDock III speaker
    Located on the bottom of the speaker
  • SoundDock XT speaker
    Located on the bottom of the speaker

Stereo Speakers

  • Companion 5 computer speakers
    Located on the rear of the bass module
  • Companion 20 computer speakers
    Located on the bottom of the right speaker
  • Computer MusicMonitor
    Located on the bottom of the right speaker
  • Companion 2 computer speakers
    Located on the bottom of the right speaker
  • Acoustimass 5 stereo speaker system
    Located on the rear of the bass modul
  • Acoustimass 3 stereo speaker system
    Located on the rear of the bass module
  • 301 bookshelf speakers
    Located on the rear of the speaker
  • 201 bookshelf speakers
    Located on the rear of the speaker
  • 161 bookshelf speakers
    Located on the rear of the speaker
  • Free Space 51 outdoor speakers
    Located on the bottom of the speaker
  • 891 in-ceiling speakers
    Located on the rear of the speaker
  • 791 in-ceiling speakers II
    Located on the rear of the speaker
  • 691 in-wall speakers
    Located on the rear of the speaker
  • 591 in-ceiling speakers
    Located on the rear of the speaker
  • 191 in-wall speakers
    Located on the rear of the speaker
  • 251 outdoor speakers
    Located on the rear of the speaker
  • 151 outdoor speakers
    Located on the rear of the speaker
  • 131 marine speakers
    Located on the rear of the speaker