Fostex FT28D Specification Sheet
Text of the manual
♦8 ohm impedance
♦1kHz to 50kHz frequency response
♦90dB sensitivity at 1W/1m (3.3ft)
♦0.528kg (1.164 lb) net weight
Frequency Response / Impedance
Specifications
Impedance
: 8 ohm
S.P.L.
: 90dB/W (m)
Music Power
: 40W
Recommended Cross-over Frequency
: more than 2kHz
Reproduction Frequency Response
: 1kHz - 50kHz
Magnet Weight
: 228.3g (0.503 lb)
Net Weight
: 528g (1.164 lb)
Dimensions & Mounting Information
Dome Tweeter
FT28D
Configuration Example
Capacitor 4.7µF
Coil 1.8mH
Coil 0.5mH
Attenuator R80B
FW168
FT28D
FW168 + FT28D
Capacitor
6.8µF
60
70
80
90
100
110
120
(dB)
ohm
16
8
4
50
100
200
500
1K
2K
5K
10K
20K
Hz
50K
60º
Impedance
30º
ø63
ø70
65
32.8
90
78
ø3.8
65
53
