Altec 604RWB - 604 Duplex speakers
6:43
Altec 604 Duplex (testing) speaker
12:16
Altec Lansing Model 19 Speakers
1:00:41
Bright colorful neon stars flying in a black background
1:26:22
Hi End Sound Test - Perfect Sound Edition - Audiophile Art
4:29
Altec 604 - N2000B speakers
1:00:01
C418 - Subwoofer Lullaby with nighty soft rain (1 hour)
48:13
Gold Glitter Background | 4K Art TV Screensaver Video background background background
24:01