Fostex FT28D User manual

Features
♦Dome Tweeter
♦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 (0.503lb)
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
60 º
Impedance
30 º
ø63
ø70
65
32.8
90
78
ø3.8
65
53