Fostex tweeters on Ebay cheap

[GrahamnDodder]

Fostex polymer dome tweeters, with (apparently) a cap included. Selling for $9.95 a pair, + $6.00 shipping to lower 48.

OK, maybe I am stupid, but why would the cap be placed across the tweeter terminals? Shouldn't it be in series with the positive terminal, typically? The way they now have it would shunt the high freqs away from the tweeter I would think.

Anyhoo, I am gonna get a pair and build a set of aux tweeters (snip a cap lead and wire it in series - duh) for use with my various full range speaker enclosures.

For $16 a pair, shipped, for Fostex, it is hard to go very wrong, I'd think.

He's got 23 more pairs if anyone else wants to play.

Am I crazy on the parallel caps tho?

GnD

[GrahamnDodder]

oops. Forgot the link:

http://cgi.ebay.com/ws/eBayISAPI.dll...tem=3726915031

Heh, heh. Sorry.

[sreten]

The capacitor does appear to be incorrectly wired.

4 ohms is not great for an additional tweeter
but a series resistor will probably be required.

sreten.

[carlosfm]

One of the terminals you see is where you connect the speaker wire, but it's not connected to the coil, it's a "false" terminal only to connect the cap.
The other terminal (the other side of the cap) is the positive terminal of the tweeter.
The negative you don't see on the pic, it's on the other side.

Anyway, this tweeter is cheap and nasty, present on any cheap speaker and you con buy a tweeter like that on any parts store for that price.
Fostex?
Maby not made by them.
No-brand with Fostex on it, maby.

[sreten]

Originally posted by carlosfm


One of the terminals you see is where you connect the speaker wire, but it's not connected to the coil, it's a "false" terminal only to connect the cap.
The other terminal (the other side of the cap) is the positive terminal of the tweeter.
The negative you don't see on the pic, it's on the other side.

Anyway, this tweeter is cheap and nasty, present on any cheap speaker and you con buy a tweeter like that on any parts store for that price.
Fostex?
Maby not made by them.
No-brand with Fostex on it, maby.

I was going to qualify it "appears to be incorrect" with "unless
there is another terminal", but this will be obvious if you buy it.

Voice coil diameter spec of 3/4" is extremely dubious, probably
1/2" given the photo, I agree its very unlikely a real "Fostex" .

sreten.

[planet10]

Maybe Foster, certainly not Fostex... these are cheap tweeters. I last bought similar for $5 pr at Alltronics (badged GM/Delco). Really only good down to 5-6 k (maybe 4 k with a steeper XO). Audax were the 1st that i saw to ship this style of T, they classified it as a 14mm unit.For $10 the Sonance at ApexJr would make more sense. Steve also sells a 10mm version of the tweeter in question for a buck each. Good for super tweeter use, and there is an array on this site that uses a whack of them (100 cost $85).

dave

[Paradise_Ice]

Graham
These tweeters are strange, there are good ones use by some speaker makers and there there are cheap ones, i dont know if its a good'n or a bad'n, for the price you cant go wrong really, as long as its a good'n, the cap is just there so it doesnt fall off, thats why its on both terminals, the guy is not some dope, its just for posting, I used these type of tweeters that had a mylar dome and they sounded quite fryed eggy but at low volumes in my bathroom who cares! yes i do have speakers everybody i can fit them! even my bathroom! drowns the nose out! get my drift!

[planet10]

Originally posted by GrahamnDodder
why would the cap be placed across the tweeter terminals?

As said in an earlier post, these tweeters oftem have 3 terminals, one of which is not hooked to anything and who's sole purpose is to hold one end of the XO cap.

dave