Fostex FE167E Actual TS Parameters?

[reikso2h]

Hi,
I am just wondering what other people's experiences have been with the Fostex Fe167E driver. How close to the fostex published parameters are the actual parameters that you guys have measured?
Thanks.

[Scottmoose]

Passably. Vas is lower, overall Q a little higher.

[Bob Brines]

I haven't measured a 167 since the production went to China. They are still drop-ins for the original Japanese production, or was that Taiwanese. The speakers I build still match the model.

I did just measure a pair of 207.

Re 6.7
Fs 42
Qe .35
Qm 6.3
Qt .33
Vas 70 l
Le .85
BL 7.8

Bob

[gmilitano]

Hi Bob,

Is that a typo on Le? It seems too high for a FR.

[Scottmoose]

Just dug out the average parameters on the matched 167s I got from Dave this time last year. Note: this is fresh out of the box & with low voltage drivers so expect Fs & Qt to drop, & Vas to increase somewhat in practice, & with an hour or so to loosen them up.

Fs = 59Hz
Re 7.1ohms
Qm = 4.79
Qe = 0.45
Vas = 25.56 litre
Sd = 126.68 cm^2
Bl = 6.13
dB = 93
mms = 6.26g

[reikso2h]

thanks for the replies
very helpful