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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They do have a tendancy to ‘shout’ if not properly implimented. Stock, it lacks some treble but this is easily improved upon.

I have ff156k tried or heard the E or E sigma. The difference is quite startling. The reason I when for the E is because I didn’t want to lot of money on my first Single Driver atempt. I have also noticed that these drivers are very sensitive to impedence match of the amp, and possibly the kind of amp as well.

Really looking forward to some big time fun. 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 FF165K 20% off sale

This one, however, needs some kind of tweeter and while Rf165k think the real maximum excursion is bigger than the spec, I would treat it gently with the “Jurassic Park” sound track. The size and shape fosrex the chamber directly behind the driver will help in this regard.

Taken alone, it rolls off a bit much for my taste. I am currently listening through some Emotive Audio b monoblocks which have killer power supplies and now the faults I had attributed to the drivers like have seemingly vanished.


As pointed out before, it appears fosetx the high-efficiency drivers make the most out of a current source and here we don’t see any particular advantage. I notice that Fostex seems to have three approaches for getting full-range performance in the treble.

I got foztex FEE in the mail late in the week. 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 ff165l over. I would have assumed that the FEE Sigma was intended to be a direct replacement for the FEE, but the mid and top end make me rethink that.

Discontinued Enclosures | Fostex

I think the match of horn geometry and damping with these drivers is critical to making them sound right. This is a very nice driver but I have to conclude that a ribbon tweeter or something similar would put the cherry on top.

I can’t figure out what the FE Sigmas are doing but they look cool. Hi Jay Sounds like my experience. The FEE seems to have a somewhat more “forward” presentation, with tighter bass a plus and some minor “shout” in the midrange a minus.

Fostex FFK 20% off sale

Hope this helps, Marco. They work well in my 8. Magnetically shielded, they also make great computer speakers. See you there, Jay. I’ve never seen a real curve of the LE 8 and I don’t remember that much about their top end.

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. The other horn cabinet was running my FFK which has been broken in for a month, These drivers love DHTriodes.

In any case, the FFK has 94dB sensitivity, works well as a full-range driver, betters its bigger brother in the treble but of course is not as good in the bass. However, it does have a more “wooly” and less tight bass. I like the Jordan so much I stuck it in here anyway as a fine counter example.


They sounded ok with 60 watt Sonus Faber amp but they love chip amps like 47 Labs Gaincard. Audio Asylum Thread Printer Get a view of an entire thread on one page.

Anyway, but after fine tuning with stuffing inside and around the whizzer cone and placement the result is stunning and no kidding here. They are amazing drivers for the money.

I made all my reservations this weekend. But very thing turn out great! The ‘wooly’ bass response may be due to overly damping the horn throat, although too little may result in a midrange peak. Anyway, if you looking for a cheap way to get in to single driver than Fostex is the best way to go. 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.

FOSTEX FF165K Driver/pair

Fkstex, not the same as what you have in mind. Posted by zobsky yahoo. 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. I hooked up a 4 ohm SS amp and they were DOA, but with a amp with 8 ohm output, they were lively and nice. We hope to see you at VSAC, since we have something [cool] to show you. You’ll notice here that the response curves are extremely rostex.