where i have written" speaker terms with everything connected" ive written Hi and low, which means mid/high and bass,on the speaker posts,just to clear that.
thanks guys
thanks guys
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
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
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- 119 posts total
Tell you what,you guys have put so much time and effort into this,this weekend i am going to clean everything up and start again,i will take variuos readings on crossovers,re-assemble the whole two speakers and do it all again and then i will come back with a list of readings,it seems thats all i can do,Something to consider: Put the LF xover ( the 3.5mH inductor and 51uF capacitor ) on a separate circuit board to eliminate shorts from HF/MF crossover components. Better yet, upgrade to air core inductor! https://images-na.ssl-images-amazon.com/images/I/71pf0GZOI1L._AC_SL1500_.jpg |
imhififan - I agree on both suggestions. I just recently learned that iron core inductors are suppose to be better than air core for the bass driver due to the lower dc resistance in many cases. Tannoy is one that uses iron core on some speakers, I'm still learning... He wouldn't even need to make a PCB, he can just use point to point wiring for those 2 components and that would also reduce the dcr. |
imhififan - I agree on both suggestions. I just recently learned that iron core inductors are suppose to be better than air core for the bass driver due to the lower dc resistance in many cases. Yeah, they have lower DCR, but sometimes that DCR is quite useful as part of the baffle step compensation, and in even ordered parts of a high pass filter that DCR is again quite handy. Still, if you want massive power handling, and a very low frequency cutoff, iron core is hard to beat. Best, E |
- 119 posts total