Blaupunkt Performance GTw 1200 Operating Instructions Manual page 16

23 liters, F3 = 46 Hz
23 liters, F3 = 35 Hz, Ft = 40 Hz
1x Port Ø = 7 cm/2.76", L = 25 cm/10", rounded on both sides
1x Port Ø = 10 cm/4" , L = 55 cm/22", rounded on both sides
40 liters, F3 = 30 Hz, Ft = 35 Hz
1x Port Ø = 7 cm/2.76", L = 17 cm/6.8", rounded on both sides
1x Port Ø = 10 cm/4", L = 38 cm/15", rounded on both sides
dB
95
90
85
80
75
70
65
60
55
10 20
16
Frequency 50 100 Hz
or
or
500 1K