testing a crossover


hi guys and girls i have a
problem with my 3 way  wilmslow-audio mirrage speakers , I am hoping you can help me with the problem,.
Lately my power amp went pop and i sent it away for repair,when i
received it back {repaired} it went pop again,on sending it back to
the repair technician ,he has come back to me ,and asked me to take
some ohms readings on the speakers, on testing the speakers , i run
these speakers using 2 power amps{Arcam Alpha 10s,using one for low
pass{bass} and the other for MID/HIGH,this is the amp which keeps
blowing,on the high /mid,on testing the terminal the bass{low pass}
read {left speaker]7.9 ohms ,right speaker bass 6.8ohms, But on the
left and right speakers hi/mid ,both read 0.0 ohms,{which we all know
is wrong}
BUT the strange thing is,when the blown amp was away,i only used one
power amp to run both speakers in bi wire config,and they worked
ok,all being a bit lack of bass and tightness,but still sound great.
So i stripped both speakers and checked the drivers,all 6 drivers
where good no shorts reading approx correct ohms for age,{Speakers
disconnected from x over}.can any one help with this,i would be so much in debt.
kind regards Mark
likklegerry
Yup, I don't disagree and that's good advice. I'm mainly interested to see what the cause is... it's a weird one.
I can guess, but that would be uncalled for and premature
Is that in response to me?.. don't know what you mean. Only point I was trying to make is if you change lots of things at the same time sometimes it's difficult to know what the original problem was and so you learn nothing along the way.
pragmasi - Yes, sorry for being an SA. You are absolutely correct, one needs to take one step at a time. I'm waiting to see and help if possible.
The mid xover is a bandpass network and tweeter is high pass network which means if you measure the resistance, it should read "infinite resistance" or something very high.  It's interesting that both left and right channel all read 0ohm.

As for the woofer, it is a low pass network so it makes sense if you measure about 7ohm which is probably resistance of the driver voice coil and the inductor.