英文關鍵字
loudspeaker
bass
studio
speaker
technology
equipment
music
volume
woofer
monitor
audio
acoustic
professional
sound
stereo
power
dynamic
subwoofer
record
membrane
driver
hifi
electronic
voice
closeup
play
black
loud
front
techno
work
object
moving
sub
system
metal
quality
pumping
frequency
cabinet
motion
musical
hi
vibration
electronics