Tyler Posted September 27, 2016 Report Share Posted September 27, 2016 I just recently restored an ar4x with a new surround and capacitor. It sounds good at medium volume but it starts distorting prematurely when I put more power to it. I don't know how to describe it except to say some fluttering and some pops from the low end, the tweeter sounds fine. It was already suggested that perhaps the voice coil could have some issues. This speaker was non working when I got it, so I don't know what issues it had prior. Any thoughts. -Ty Link to comment Share on other sites More sharing options...
Sonnar Posted September 27, 2016 Report Share Posted September 27, 2016 The distorsion is only on the woofer with removed surround ? If played with removed or damaged surround the spider/suspension or the voice coil could be damaged, or simply off-axis. Link to comment Share on other sites More sharing options...
owlsplace Posted September 27, 2016 Report Share Posted September 27, 2016 This is a good reason to shim voice coils on speakers with unknown backgrounds as any voice coil damage would be revealed during the process of shimming. You can also remove the covers on the AR-4 series woofer magnet yokes and get a look at the rear of the voice coil while depressing the cone. Roger Link to comment Share on other sites More sharing options...
Tyler Posted September 28, 2016 Author Report Share Posted September 28, 2016 23 hours ago, Tyler said: I just recently restored an ar4x with a new surround and capacitor. It sounds good at medium volume but it starts distorting prematurely when I put more power to it. I don't know how to describe it except to say some fluttering and some pops from the low end, the tweeter sounds fine. It was already suggested that perhaps the voice coil could have some issues. This speaker was non working when I got it, so I don't know what issues it had prior. Any thoughts. -Ty "I'm not afraid to die, I just don't want to be there when it happens" Link to comment Share on other sites More sharing options...
Tyler Posted September 28, 2016 Author Report Share Posted September 28, 2016 7 hours ago, owlsplace said: This is a good reason to shim voice coils on speakers with unknown backgrounds as any voice coil damage would be revealed during the process of shimming. You can also remove the covers on the AR-4 series woofer magnet yokes and get a look at the rear of the voice coil while depressing the cone. I was able to align the speaker using a test tone CD. I may try to sneak a peak at the coil, what should I look for? Link to comment Share on other sites More sharing options...
owlsplace Posted September 28, 2016 Report Share Posted September 28, 2016 Quote I was able to align the speaker using a test tone CD. I may try to sneak a peak at the coil, what should I look for? Damage to the voice coil former from bottoming and loose or burnt wire. Removing the dust caps on the 4-series presents some challenges. Roger Link to comment Share on other sites More sharing options...
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