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Post by burnchar on Mar 22, 2015 0:35:43 GMT -5
I use an XPR-5 with Ascend Sierra 2 and Sierra Tower speakers. The towers can accept 300W continuous and 500W peak (unclipped, which I assume means it can handle a bit more but the drivers will hit stoppers. That about right?). The XPR-5 can deliver 400W per channel driving 5 channels or 575W per channel driving one. I'd like to know if I can use the lights to estimate the power being fed to the speakers. They seem to follow power output, since I doubt the amp can measure volume. The manual's has this to say: Are those lights a power meter? If so (assuming perfectly 8ohm speakers), what does it mean when half the bars are filled? what does it mean when it maxed? - The channel is outputting 400W?
- It's outputting between 400 and 575 depending on the number of channels being driven?
- Just pretty lights?
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Post by wizardofoz on Mar 22, 2015 1:57:12 GMT -5
I know on the XPA-1G1 the lights are indicating when all on was the 8Ohm rated output which was 500W - thats what lonnie told me. at 4Ohms load 50% of the lights 1000W and at 2 ohms it would be close to 2KW at 25% scale ... At least thats what I recall. not sure on an XPR unit. maybe a PM to Lonnie or KeithL could clear that up.
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Post by Porscheguy on Mar 22, 2015 5:42:57 GMT -5
I think the power meter lights are intended for pretty viewing....
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DYohn
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Posts: 18,351
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Post by DYohn on Mar 22, 2015 9:24:07 GMT -5
When the lights are on, that means they are on.
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