Restoration professional sound systems direct-radiating bass-reflex
25:46
MR.ELECTRICITY PROJECT RESTORATION // Ground super subwoofer restoration
1:57:20
loa jbl bát 30 cách làm và hoàn thiên/ jbl bowl speaker 30 ways to make and complete
14:45
2000W Active Speaker Repair - No Bass - ALTO TS310
24:51
Restoration active subwoofer system // professional sound systems direct-radiating bass-reflex
18:51
Repair of torn JBL Ball 40 speakers
15:49
FABRICACIÓN DE SUBWOOFER AMPLIFICADOS
3:25:56
Guide to Repairing and Restoring Amplifiers From all Brands // Restore a Glory Past Time
30:16