**likklegerry - Small difference between the original capacitor values and the ones you installed will not cause failures of the amplifiers. If anything, it would have a SLIGHT chance to damage the tweeter or midrange driver. Since it appears that the value of the original capacitor for the tweeter was 4.2uf and the one you installed is 3.9uf, that would very slightly raise the crossover frequency and absolutely NOT cause damage to the tweeters or amplifier. The caps you installed will definitely improve the sound, so please just leave them in.
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
@fiesta75- " I just don't want the OP to do anymore work on the boards before doing tests. It seems like he is doing rework in the middle of the tests and that could make some tests invalid. This could create more problems as I'm sure you know." I get that and agree, fully! Still believing the problem to exist outside of the crossover components themselves: I'll stop flapping my fingertips! |
@likkelgerry- I do not envy you being so far from someone versed in electronic repair. Here's hoping you are able to locate the issue and get it resolved, without having anything further go awry with your amp. Unless the bi-amp configuration made a MAJOR leap upward, regarding sound quality, to your ears; I'd button things back up and run with one! Meanwhile: take the Wife OUT for some Meshana Skara or Mousaka and help her relax! Top it off with some Marudnik (are wild berries in season over there?) and make her love you, again! |
Please look at this photo: https://ucarecdn.audiogon.com/32d4343f-f8e2-4de2-95f7-2e0766972c94/-/autorotate/yes/ If that is a short, for bi-amping, it will connect two amplifier output together through the 3.5mH inductor and the 3.3Ω resistor. There could be more similar problem spots on the PCB that we can’t see from those photos, that was the reason I suggest OP to clean up the PCB and reinstall components. |
- 119 posts total