FOSTER/FOSTEX FE133
Price unknown (1 piece, around 1968)
¥ 3,400 (1 piece, around 1976)
Commentary
13 cm cone type full range unit of FE series.
Roll edge method is adopted.
In consideration of mounting in a small-capacity cabinet, a ferrite magnet is used so that the total height of the speaker is low.
There was a model change around 1976 and it was described as FE133New (FE133N) in the catalog.
Also, in the picture at that time, the magnetic circuit was changed, and there were 2 kinds of variations of 4 Ω and 8 Ω.
Model Rating
Method | Cone type full range speaker |
Aperture | 13cm |
Impedance | 4 Ω (around 1976) 8 Ω |
Lowest resonance frequency | 75 Hz ± 15% 70 Hz (around 1976) |
Playback frequency band | Fo ~ 16 kHz |
Output sound pressure level | 99dB/W/50cm 91dB/W/m (around 1976) |
Max Input | 13W 18W (Music, circa 1976) |
Mo | 3g 3.5g (around 1976) |
Qo | 0.45 0.4 (circa 1976) |
Effective vibration radius (a) | 5.0cm |
Magnet weight | 386g 280g (around 1976) |
Magnetic flux density | 13,000gauss |
Total flux | 37,000maxwell |
Standard enclosure volume | 12 liters |
Gross weight | 1kg 0.95 kg (around 1976) |
Enclosure dimension drawing, dimensions in brackets
Detailed dimensional drawing