Tannoy Tweeter 7300 0957 - Tannoy Reveal 5A Speaker

If the company say they are no longer made, then it's unlikely you will find replacements in any electrical parts supplier.
If you still want to use the unit then you will have to look around for one on places like e-bay, which might be faulty elsewhere , but have a working tweeter.
A search on e-bay itself might even reveal a spare tweeter! Or a second hand that's cheap to replace the one you have. At least you will another set of spares (except tweeter of course) for the new one!

I would say from your description that the tweeters are blown.
Can you take the speaker that sounds good and swap it out with one that sounds bad. If you do that and the good one still sounds good. You have a tweeter problem. And they would need to be replaced.

check to see if you can find it on parts-express.com that's where I get all my speaker stuff

I assume you have more than one of these speakers. If so simply remove the tweeters from the two speakers and swap them around. If the other speaker acts up then, you know the tweeter is faulty. However if it stays on the same speaker it's the crossover that's the problem.

What you need to do is connect a 1.5 volt battery to the speaker(s) terminals for a split second. Put your ear to the tweeter at the same time (you might someone to help you do this). If the tweeter "pops" it works, if not you might have blown them. The best way would (to be certain) is to remove the tweeter from the crossover inside the unit.
Tweeters are the first thing to go when the speaker has been connected to an amp that is wrong for them or they have been run at high volume.

ya.. u can.. you can check here, here.. Thnx

Hi there, the best place to look is on ebay, but 1st take it out of the casing using a small allan key and check that the terminals are intact. Its very easy to do and replace if need be. You are looking at around

If any new readers are seeking the same advice, then as at Feb 2016, replacements are available from Real Electronics in the UK, 08452 307 747 - this info from the service line at Tannoy. £63.21 + VAT + delivery. Part no 7900 0621

Much of the advice above is not applicable to the Eyris, folks seem to be posting generic solutions.

Unbolt the hex bolts at the rear of the tweeter assembly. With a screwdriver or similar, push the threaded rods forward to move the front portion of the tweeter housing free from the cabinet. The amount of flexibility in the cables may vary, and some users may have to remove the terminal block (hex bolts again) on the rear, and remove the acoustic wadding to gain flex in the cables.

There are three terminals on the tweeter, with push-fit spade connections. Green for Earth, red/black for signal. Disconnect these, pull tweeter forward, remove threaded rods.

Reassembly is the reversal of removal. Ensure all cables go in same places, etc. etc.

On the images on Google for them there are no extra wires. Where are the wires on them? Do all the drive units work?
If the wires are for the super tweeter. Then looking around at the Google images it should be possible to unscrew the 4 screws holding the tweeters on top and you should be able to push the wires back inside the unit, if they are not connected to anything. Or at least see where they do connect.

Hi George,

You may be able to pull them out using tape. That is sellotape then gently pull .They should pop out like
a dented car panel. My understanding is these domes really protect moving coil from dust so should not affect sound. Worst case swop the tweeter.
Ive just bought a pair of revolution 3 with same "fault" so I will let you know how I get on .I am in Electronics trade as profession. It may be possible to gently remove dome using a surgical blade then popping out and gluing on with PVA / Latex glue coloured with black ink if you dont like white appearance.

It is sometimes possible to pull out using fine sewing needle push in then gently pull out as if removing a spell from your finger.

Hope this helps