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#1
Posted to rec.audio.high-end
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Wilson Audio Watt Puppy 7 Tweeters
Hi there I managed to blow the tweeters on my WP7's. Would anyone know
where I can buy a replacement pair? Kind regards, Nikki |
#2
Posted to rec.audio.high-end
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Wilson Audio Watt Puppy 7 Tweeters
On Sun, 10 Jul 2011 07:59:34 -0700, Nikki Thuillier wrote
(in article ): Hi there I managed to blow the tweeters on my WP7's. Would anyone know where I can buy a replacement pair? Kind regards, Nikki Ostensibly, only from Wilson Audio themselves. |
#3
Posted to rec.audio.high-end
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Wilson Audio Watt Puppy 7 Tweeters
On 10 Jul 2011 14:59:34 GMT, Nikki Thuillier
wrote: Hi there I managed to blow the tweeters on my WP7's. Would anyone know where I can buy a replacement pair? Kind regards, Nikki A recent Wilson ad proclaimed that they had made special efforts to buy up spares for older Wilson products.... Have you tried them? -- My email is JohnMee3 AT comcast.net, not whatever is in the header |
#4
Posted to rec.audio.high-end
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Wilson Audio Watt Puppy 7 Tweeters
On 7/10/2011 7:59 AM, Nikki Thuillier wrote:
Hi there I managed to blow the tweeters on my WP7's. Would anyone know where I can buy a replacement pair? Kind regards, Nikki Are you sure you blew the tweeters and not the resistors? Make sure you check them first. Keith |
#5
Posted to rec.audio.high-end
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Wilson Audio Watt Puppy 7 Tweeters
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#6
Posted to rec.audio.high-end
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Wilson Audio Watt Puppy 7 Tweeters
Hi Keith,
Thanks for taking the time to reply to me , upon checking It now seems I have blown both tweeters and the resistor on one side also! My dealer wants $2,600 to replace them!!! Nikki |
#7
Posted to rec.audio.high-end
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Wilson Audio Watt Puppy 7 Tweeters
Thanks very much, I will call them on Monday and ask!!
Nikki |
#8
Posted to rec.audio.high-end
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Wilson Audio Watt Puppy 7 Tweeters
Am 07.08.2011 01:36, schrieb Nikki Thuillier:
I have blown both tweeters and the resistor on one side also! My dealer wants $2,600 to replace them!!! Nikki Make shure to have your amp(s) checked if you don't know the reason of the failure for sure. Otherwise the tweeters might blow again next time you try. Charlie |
#9
Posted to rec.audio.high-end
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Wilson Audio Watt Puppy 7 Tweeters
On Sun, 7 Aug 2011 07:13:14 -0700, Charlie Bonitz wrote
(in article ): Am 07.08.2011 01:36, schrieb Nikki Thuillier: I have blown both tweeters and the resistor on one side also! My dealer wants $2,600 to replace them!!! Nikki Make shure to have your amp(s) checked if you don't know the reason of the failure for sure. Otherwise the tweeters might blow again next time you try. Charlie Good point. There are generally two amp conditions that can blow tweeters. One is that the amp is ultrasonically oscillating, and the second is that the amplifier that you're driving the speakers with is too small for the listening level to which you are driving the speakers and the amp is clipping - a lot! In the first case, the amp itself is faulty, and a high-level oscillation is being produced, that while you can't hear it (it might be higher than 20 KHz), it is nonetheless being pumped into the tweeter. Unable to handle that much power at those frequencies, the tweeters simply overheat and burn-out. This condition is unlikely to appear in BOTH channels at the same time, though, but it is possible. It's also possible that the oscillation is occurring UPSTREAM of the amplifier. Are you playing music from a computer sound card? If so, you might want to start there. You'll need an oscilloscope to see the oscillation, as you usually can't hear it. The second problem occurs when you couple an inefficient speaker system with a solid-state amplifier that's too small to drive it adequately. If you listen very loudly, and drive the amplifier beyond its power capabilities, the amp will "clip". That is to say, that the amplitude of the waveform feeding the speakers exceeds the amplifier's power supply limits. When this happens, the tops of the music get cut off flat. This means that the signal to the tweeter becomes, instead of occasional high-frequency content, a steady-state high-amplitude "square wave". Because it's a steady state signal, the voice coil in the tweeter doesn't have time to cool-off between peaks and it's 'duty cycle' (the length of time that the voice coil can be energized before it overheats) becomes exceeded. Since tweeters are small, with small voice coils and not much mass to dissipate any heat that builds up in them, they can't carry much power. Normally that's OK because there isn't much power in the normal high-frequency content of music and the speaker system's crossover network keeps the low frequencies (where the power is) out of the tweeter anyway. However, all bets are off if the amp is defective and oscillating supersonically at high volumes, or if the system is being played loudly enough to clip the amplifier pretty consistently. Most speakers have a fuse in line with the tweeter to protect it against both of the above conditions. Some manufacturers eschew this practice because they believe that the fuse acts as a nonlinear resistor and introduces distortion. On the other hand, more often than not, the tweeter ends up protecting the fuse by "blowing" first, in which case, the idea of fusing the tweeter ends up being more like wishful thinking than having any real, practical value. |
#10
Posted to rec.audio.high-end
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Wilson Audio Watt Puppy 7 Tweeters
Nikki Thuillier writes:
Hi Keith, Thanks for taking the time to reply to me , upon checking It now seems I have blown both tweeters and the resistor on one side also! My dealer wants $2,600 to replace them!!! Nikki OMG! |
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