Re: Mission speakers...i think i've blown one of them...
I'm guessing you mean one of the bass drivers (as standmount or floorstanding speakers don't have subs as such). Place your hand lightly against the driver when playing some music at normal volume, there should be some vibration (this increases the louder you play). If there's no vibration, you're probably right.
Contact Mission, who can send you a new driver, contact a Mission dealer to see how much it'll cost to go through the dealer network. I'd recommend going down the latter route if you are unsure of what to do yourself.
Just noticed you posted this in March, in which case, I hope you got it fixed (or are enjoying your new pair instead!).
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Hi, yes there is a rather simple method for testing the actual subwoofer unit, simply plug in a known good rca cord into the input-make sure if there is a switch for level input that it is on the back make sure it is switched to line and not level, next plug in rca cord, turn on unit-stick tip of finger on tip of rca cable. This should gernerate a"HUMM" in the subwoofer if everything is working correctly. Thanks for choosing FixYa, I hope this was of some help,good luck Prodzilla.
if you have access to a multimeter, you should test you impedance (ohms)
Ω, check to make sure the speakers reads higher than the amplifier needs; this will result in less strain on your amp and diminishement of sound...For example: if you connect two 4Ω
speakers in series it results an 8Ω circuit (least strain). and if you'd take the same two speakers and connect them in parralelle it would result in a 2Ω circuit (most strain).
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.