My new toys

[pinkmouse]

Well, I managed to blag these drivers for free today, they are out of an old PA system. I got 8, but only 4 are working, so I am thinking of knocking up a 1.5 way system for my computer, depending on their specs.

Obviously I need to measure them first, but I was just wondering if anyone had seen similar drivers before. They are 4" jobs, with a 1" voice coil and a hefty magnet, and came out of a box built in the mid nineties. The only other identification I have is that they have a code 804x on the magnet. Anyone seen anything like them before?

[pinkmouse]

Oops, the pic!

[OMNIFEX]

Those are Dynacord Speakers. Electrovoice (EV)
and Dynacord were together at one time. Don't
know the relation now.

One things for sure, they are not bass drivers.
Midrange would be more the criteria for those
speakers.

I remember seeing box that held 4 of those
speakers with Piezo Tweeters in them.

It was like the number one top box you
would find in record shops in the early to
late eightees.

Again, no bass driver, but should play
midrange fine.

[planet10]

Originally posted by pinkmouse
thinking of knocking up a 1.5 way system for my computer

bipole, bipole, bipole...

what does it say on the back... the small print?

dave

[Brett]

Originally posted by planet10
what does it say on the back... the small print?

Not Suitable For Use As A Bipole

[pinkmouse]

Originally posted by planet10

bipole, bipole, bipole...

It crossed my mind

It's going to be a couple of days before I can test them, but I couldn't resist just plugging a bare driver into one of my GCs last night and they sound pretty good. Obviously no idea as to bass, but mids and highs sound great so I will probably go mostly fullrange, and I have an old 10" Audax HDA I can use to knock up a single sub if need be.

what does it say on the back... the small print?

Easier to post a blow up rather than type it all in!

[planet10]

Originally posted by Brett
Not Suitable For Use As A Bipole

There are 4 drivers, major requirement for bi-pole

Originally posted by pinkmouse
Easier to post a blow up rather than type it all in!

I was going to say that the basket looked Japanese, and if Japanese, the 6-legged basket screams Foster... and there it is written on the back :^)

This is likely a pro varient of the FE103. Bigger magnet & surround goes the wrong way. Should make a good little FR... might need a little help above 10k.

dave

[Bose(o)]

You say, "Foster", but my eyes say, "Fostex."

[JoeBob]

Fostex is a devision of Foster, or so I've been told.

[pinkmouse]

Well, I ran them all up with my trust test GC today, and one of them has a little bit of a voice coil rub at high volumes, hmmm.

I think I will do a dustcapectomy on it tomorrow and see if there's any rubbish in the gap that I can clean up or hoover out. If that doesn't work, I may have to give up on the push-push idea

Unfortunately it's been raining all day, so I haven't had chance to take them outside and do some proper measurements, however just sticking a mic on them while they were sitting on the bench seems to give a roll off at about 14k at the top, and 100Hz at the bottom. These could be quite fun