Fostex Speaker Model. Part Number. ” FULL RANGE, FFK. • ” FULL RANGE • KENAF paper/ fiber composite cone • Foam surround • 94db sensitivity. Features. ♢mm ( in) cone type full range. ♢8 ohm impedance. ♢fo to17kHz frequency response. ♢94dB sensitivity at 1W/1m (ft). ♢kg ( lb) net. I’m planning to use a Fostex FFK as mid/high driver together with a Fostex tweeter and Beyma woofer. Active x-over between de Beyma.

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The other horn cabinet was running my FFK which has been broken in for a month, The FE series uses ‘whizzer’ cones to good effect and the FF series uses an aluminum center. I hooked up a 4 ohm SS amp and fostexx were DOA, but with a amp with 8 ohm output, they were lively and nice. I think they are a bit too big for the driver, especially after reading the article about TL and pipe speaker in August 03 Audio xpress.

I notice that Fostex seems to have three approaches for getting full-range performance in the treble. Audio Asylum Thread Printer Get a view of an entire thread on one page. I made all my reservations this weekend.

I’ve never seen a real curve of the LE 8 and I don’t remember that much about their top end. I would have assumed that f165k FEE Sigma was intended to be a direct replacement for the FEE, but the mid and top end make me rethink that.


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It has 96dB sensitivity and if you bring in a good tweeter, maybe a nice ribbon above 5K, I think you’ll really have something. These drivers love DHTriodes. I like the Jordan so much I stuck it in here anyway as a fine counter example. However, it does have a more “wooly” and less tight bass. But in my TQWT they sound excellent. I can’t figure out what the FE Sigmas are doing but they look cool.

Stock, it lacks some treble but this is easily improved upon. I have also noticed that these drivers are very sensitive to impedence match of fosyex amp, ff1665k possibly the kind of amp as well. We hope to see you at VSAC, since we have something [cool] to show you. I have not tried or heard the E or E sigma. Magnetically shielded, they also make great computer speakers.

Taken alone, it rolls off fv165k bit much for my taste. I was going to go with the 8″ Fostex but I don’t want bigger box and the 6. It excels at one very difficult thing – to still sound good after the honeymoon is over. They tostex ok with 60 watt Sonus Faber amp but they love chip amps like 47 Labs Gaincard.

Posted by zobsky yahoo. The reason I when for the E is because I didn’t want to lot of money on my first Single Driver atempt. I got the FEE in the mail late in the week. But very thing turn out great! This one, however, needs some kind of tweeter and while I think the real maximum excursion is bigger than the spec, I would treat it gently with the “Jurassic Park” sound track.


They work well in my 8. This is a very nice driver but I have to conclude that a ribbon tweeter or something similar would put the cherry on top. The ‘wooly’ bass response may be due to overly damping the horn throat, although too little may result in a midrange peak. I think I am going to put the FFK in a little bass reflex cabinet and coupled with my newly acquired radioshack supertweeters, should make for an interesting bedroom speaker.

Fostex FFK 20% off sale

Of course, this could be dependent on a less-than-optimal match with the backhorn, but I suspect it also has to do with the driver’s higher Qts. You’ll notice fostez that the response curves are extremely similar. The FEE has maybe just a tad less bass but the FFK has been broken in for some time now and has also had some damping material wrapped around its ribs to absorb nasty reflections.

Well, not the same as what you have in mind.