Fostex FE167E Fullrange Speaker Driver
Fostex FE167E Fullrange Speaker Driver
The Fostex FE167E is a 165 mm (6.5") full-range loudspeaker driver. Like most Foxtex speakers, the driver is well built and provides good performance for the cost. There are several projects on the internet that have shown the Fostex FE167E driver using in a variety of enclosures that include sealed, bass reflex, Transmission Line and Quarter Wavelength enclosures. The FE167E is a magnetically shielded driver and constructed on a stamped frame. The paper cone and whizzer are constructed from banana plant fiber which is very light. The efficiency of the FE167E is relatively high (about 94 dB / 1W at 1m) and the frequency response is good through the midrange but a little rough on the top end. This driver is best when listened to slightly off axis. The small excursion of 0.6 mm limits the maximum potential output.
Photograph 1: Fostex FE167E Fullrange Speaker Driver
T/S Parameters - Fostex FE167E Driver
The Thiele/Small Parameters for the Fostex FE167E drivers provided by Foxtex are shown in the table below.
| Parameter | Fostex |
| Fs | 51.5 Hz |
| Vas | 35.94 L |
| Qts | 0.31 |
| Qes | 0.33 |
| Qms | 4.63 |
| Re | 7.1 Ohms |
| Le | n/a |
| SPL | 94 dB |
T/S Parameters - Fostex FE167E Fullrange Driver
Datasheet - Fostex FE167E Speaker
- Fostex FE167E Fullrange Speaker Datasheet - (PDF - 94kB)
Fostex FE167E Measured Frequency Response
The measured frequency response of the Fostex FE167E driver is shown below in Figure 1. The measurements are nearfield, with the driver mounted in the Fostex FE167E Reccomended Bass Reflex Enclosure.
Figure 1: Fostex FE167E Speaker - Measured Frequency Response
Enclosure Plans and Projects Links - Fostex FE167E
- DIY Fostex FE167E Bass Reflex Speakers
- Fostex FE167E Recommended Bass Reflex Type Enclosure Plans - (PDF - 75kB)