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Fostex FF85wk vs Mark Audio Alpair 7.3 or the super A.n.?
Fostex FF85wk vs Mark Audio Alpair 7.3 or the super A.n.?
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Old 12th September 2013, 12:04 AM   #1
Mr Daniel is offline Mr Daniel  United States
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Default Fostex FF85wk vs Mark Audio Alpair 7.3 or the super A.n.?

Hi Everyone,

I am looking at 3 fullrange driver's. I have heard the ff85wk drivers very micro detailed. Mark audio's alpair 7.3 I have not heard? The super A.N. I have not heard? I am looking to use the drivers for midrange duty's and tweeter if I can get away with it? I plan on crossing the drivers at 300 hz on up. I have woofers to take care of the lower end. Which driver will give me the most natural sound? I am into voices so they have to be real sounding. Thanks Mr Daniel

Last edited by Mr Daniel; 12th September 2013 at 12:07 AM.
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Old 12th September 2013, 01:30 AM   #2
planet10 is offline planet10  Canada
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Fostex FF85wk vs Mark Audio Alpair 7.3 or the super A.n.?
We have used both FF85wk & A7.3 (both EnABLed) in FASTs. We have more experience with the 1st one, and VERY good success. We believe the A7.3 should be better, but we haven't sufficient experience with it in FAST yet to confirm.

As soon as i get my main amp back i will be setting up the A7.3/SDX7 FAST for long term development.

The A7.3 can be XOed lower (160 Hz the starting point in our case), our FF85wk FASTs have been XOed at 240 (active) & 320-350 passive.

The Mark Audio costs more if that makes a difference.

Both are really good.

Keep in mind that voice fundementals can be as low as 80 Hz, and with a 300ish XO the woofer is likely handling the voice fundementals, and the XO needs to be unobstrusive -- we have used 1st order PLLXO or series XOs in all but 1 case.

dave
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Old 12th September 2013, 05:06 PM   #3
chrisb is offline chrisb  Canada
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Default lowest vocal fundamental?

unless your name is Tim Storms?

from Wikipedia, so it must be true:

Storms's Guinness World Record for the lowest note produced by a human was certified in January 2002.[3] Storms also holds the Guinness World Record for the widest vocal range for a male. His records have been published in the Guinness World Records 2006. He broke both of these records in August 2008.[1] As of 2008, the new record for lowest note was 0.7973 Hz, and the new record for Widest Vocal Range For Any Human was ten octaves.[4]
In 2012, Storms reclaimed the record for the Lowest Note Produced by a Human. The new record is G-7, or 0.189 Hz, eight octaves below the lowest G on the piano, or just over seven octaves below the piano .[5]
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Old 13th September 2013, 02:55 AM   #4
tuxedocivic is offline tuxedocivic  Canada
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Less than 1hz. !!!! 0.189hz is more than than 5 seconds to complete one oscillation. I don't understand how that even works. And how does a microphone hear that let alone a human ear.
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Old 13th September 2013, 05:18 AM   #5
chrisb is offline chrisb  Canada
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Quote:
Originally Posted by tuxedocivic View Post
Less than 1hz. !!!! 0.189hz is more than than 5 seconds to complete one oscillation. I don't understand how that even works. And how does a microphone hear that let alone a human ear.
my thoughts exactly, but like I said - "I read it on the internet, so it must be true"
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Old 13th September 2013, 01:37 PM   #6
tuxedocivic is offline tuxedocivic  Canada
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Haha. Yup, can't argue that.
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Old 14th September 2013, 01:20 AM   #7
blumenco is offline blumenco  United States
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Default Another option

If you are looking closely at the FF85k, I wouldn't write off the FE83En as another option. I've found the FF85K to sound a bit thin and "tissy" up top, no matter what enclosures I put them in, and I tried many, including ones that I originally designed just for that driver, even considering baffle step and etc.

Call it personal preference, and also as a disclaimer I'm commercially involved with the FE83En driver (and so are Dave and Chris involved similarly with the FF85k...). But to my ears that are only 30 years old the FF85k just didn't make the cut. the FF85k just really bothers me during listening sessions above a half hour. However, I've always been very sensitive to the qualities of high frequencies and so that's a big part of my preference for the softer driver.

The highs on the FE83En are still all there information wise, but just let me listen longer.

The bass I've been able to get out of the FE83En is hitting hard down to 85/90hz and slightly below if the speakers are close to a wall.

The bass from the FF85k was comparable to the 83 in various enclosures, and maybe they go just a tad lower, and you can put them in simply tiny enclosures under 3 liters if you like. so some definite tradeoffs for sure. The lower range vocals of the 85k in an enclosure that small are hard to get to sound totally full, but this is a 3" driver we are talking about.

The Mark audio AP7.3 I have not heard, but have owned and moderately enjoyed the Alpair 6p's (however again the highs were a bit more fatiguing than the FE83En so they didnt make the cut). Commercially, I am currently in development on bass reflex cabinets for Alpair 10P and/or 12p so I can fairly well recommend those drivers. The Mark Audio cones are some of the best in the biz. I do wish they came in any metal frame option rather than ABS plastic, however. (though their plastic is of a very high quality indeed).

The AN's are probably worth a listen depending upon the model. have worked with their drivers and enjoyed them, though the model I had (cast 12) was understandably a little ragged on top. but crossed to a tweet could be pretty darned nice. The bass had TRUE potential.

Hope that alternative perspective helps!

Cheers,

Clark
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Last edited by blumenco; 14th September 2013 at 01:34 AM.
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Old 15th September 2013, 12:16 AM   #8
DcibeL is offline DcibeL  Canada
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I agree with you Blumenco. I've tried the FF85K and was not particularly impressed, despite what "the internet" says about them . I found them to sound a bit "shouty", and lacking in the top end. They're good if a "retro" sound is what you're after, but I won't be using them again for modern hifi. They were my first and only Fostex purchase, unfortunately has turned me off trying Fostex again.

Try the Vifa TG9 or TC9. I've just received a pair of TG9 and they are very impressive. Not really a good comparison, but I wanted to hear them make some noise, so I put them in a poly filled cup. Side by side cup comparison with the Fostex, they walk all over the Fostex. Sure you need twice as much power since they're a 4 ohm load, but if your crossing to a woofer for the low end, who cares? It has 5 times the xmax, so dump in some more power and enjoy!

For only $20 the Vifa TG9 is easily one of the best. In a few weeks time I'll have them mounted in some cabinets and playing right along with a 10" woofer covering the low end.
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Old 15th September 2013, 12:52 AM   #9
Mr Daniel is offline Mr Daniel  United States
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Thnak you everyone for all you have given me to think about? I will have to think about the drivers that have been talked about here. Thanks Mr. Daniel
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Old 15th September 2013, 05:50 AM   #10
DYNABLASTERTUNERS is offline DYNABLASTERTUNERS  Serbia
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FF85K and FF85WK are different drivers...
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