I bought replacement drivers for Mission 780 speakers...how do I replace them...no visible screws...does the cover plate come off?

Is this a sewing machine? Plastic covers can be tricky to remove. Look for deeply set screws in deep holes, as well as screws that might become visible after removing covers. Sometimes the screws holding the rubber feet on will also secure the cover.

Yes, the two sets of terminals are for the tweeter and bass driver.

When you bi-wire you want the low frequencies to go only to the bass driver and the high frequencies to go to the tweeter..

Please see this link for more information:
http://www.brilliancehifi.co.uk/how-to-bi-wire-speakers.htm

Please rate my answer if you find this useful.

Thanks,

Chris

yes

Do not remove the brass plates! These work as a bridge between the connections, making them a universal speaker. You only need one input. The other input should say "Bridge", which is an output to the other speaker, allowing you to run these speakers as monitors or subs. The bridge option runs both speakers on the same channel, making it a mono signal, so if they are used as monitors, everyone hears the same thing. If they are used as subs, equal power goes to each, reducing the chance of a blown speaker.


Hope that helps!

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/cameron_463100ffd54b591d

Unless the company that made the speakers machined the allen screws themselfs, I'm sure any standard or metric allen set will work. Just becareful of the bracket because it may be glued to the speaker frame or there might be a gasket between the 2.

There will be a some wires coming from the crossover that will lead to the tweeters and to the woofer. They are terminated with female connectors that will slide on to the male end on the speakers. If the speakers that you are getting are from the same manufacture, then they should have the same fittings. If not, you may have to replace the females to match. It's a simple strip and crimp process.
Just make sure to mark the wires so you know which one is pos and neg. If you mix them it will throw your speakers out of phase and they won't sound right.
Hope this helps.

Yup, Thats about the shape of it - use a nice think solid core copper mains cable. That's waht was fitted to my recently retired 764's when I bought them new many moons ago.

I've had the same problem/s. A manufacturing fault with the original midrange drivers of all of my Mission 780's and 782 speakers. If you contact Mission through their website they will supply an updated style driver for about £45, I would recommend buying 2 because the other one will fail eventually, if like me you use them every day. All four failed within two years of each other.

Regards

kingar

i had the same thing it is a problem with the flux that was used on the drive cone to connect it to the outer case had this with both speakers change the drive cone.

1. Remove the front cover.
2. Remove the four bushes that held it in place. Beneath them are crosshead screws.
3. Remove these screws, and the surround board they hold.
4. You can now see the bass speaker retaining screws. remove them and withdraw the speaker *carefully*. (A knife under the edge helps to get it going.) The wires are at the back mixed up with the damping wool.
5. The tweeter has its retaining screws under the rubber gasket stuck to it.
6. The connectors shoud slide off the lugs, but mine are pretty stiff. Careful with the tweeter's: mine pulled out the termnal completely, and I've had to replace the unit!

If these are Mission 780s your talking about, you're not the only one. The woofers supplied with the speakers originally have a known design/manufacturing flaw causing them to go "open circuit" after a few years use. The good news is that IAG (who now own Mission) can supply you with a pair of replacements for about £45 plus postage. (You'd be forgiven for thinking they should supply the replacements for free given the cost of these speakers new and the fact this is a design/manufacturing fault). Replacing your woofers is easy. Take off the front baffle. Remove the four rubber plugs that the baffle attaches too, and take out the 4 screws you'll find behind them. Now ease off the plastic moulded front pannel. Remove the four screws holding the woofer in place. Pull the spade connectors from their tags on the back of the speaker. Put the new woofer in by following this proceedure in reverse.