FS: Foster SP-10F5 (FE-103A) Full-range Speakers - diyAudio
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Old 17th August 2009, 08:47 PM   #1
speaker is offline speaker  United States
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Default FS: Foster SP-10F5 (FE-103A) Full-range Speakers

One pair of alnico Foster SP-10F5 full-range speakers. Came from a set of Toshiba's, cannot recall the model. I have had these for awhile but I am not going to use them. Somewhere I found reference (maybe on diyaudio?) that they are equivalent to the FE-103A. They do seem equivalent but there are some obvious differnces -

1) The cones are black. They are very low mass, rigid, and quite snappy. I don't know what the color difference signifies if anything. They do look a bit better than the traditional off-white ones to me.

2) They do not have the trademark "eyeball" dustcap. My plan was to fit phase plugs anyway so the dustcaps would be sacrificed.

3) The baskets are squared off rather than arcs like the traditional FE-103A. Center-to-center hole spacing on one side is ~82mm / ~3.2". There is also some minor surface corrosion right where cabinet glue rested against it. (see pictures) It has not changed at all in appearance since I got them.

These work perfectly and even sounded nice in their original leaky enclosures. Both have matched DCR's of 4.1-ohms measured on my Fluke 87. The cones have no bends, tears, or crinkles, same for the surrounds. In addition there is no sag to the spider, both cones sit, at rest, at the same height.

$65 + shipping (These should just make the limit on a USPS flat-rate box)

Please email if interested.

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Old 17th August 2009, 09:05 PM   #2
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Those are actually National (panasonic) drivers. They still fit into the broad FE-103A class of drivers. I haven't had any of those in hand (which adds another notch to the number of FE103A variants i've seen -- well over 2 dozen), but National built some pretty special FRs in their day.

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Old 17th August 2009, 09:16 PM   #3
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Outstanding! I never would have thought of National. I was told they worked in FE-103A applications but I appreciate the validation.
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Old 18th August 2009, 02:46 PM   #4
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Morning bumptity!

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