If you hit this driver with a 50v sine wave for long enough (particularly at impedance minima). It will melt. (Source, I've melted 6 , limited to 50v, nwithout seeing a limiter light)
Thanks for the experience. With that being said, what would you be comfortable limiting this driver at in a real world scenario in a live sound PA.
On a side note PE is listing the 3015LF at $199 now. 🙂🙂🙂
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Rock is a different game than bass heavy recorded music. Would peak limit at 60v and never it it.
Unfortunately its 12" brother is still at $185, grr. That's the version I'd love to get my hands on for testing.
The RMS power handling of the 4-ohm version of the 3012 LF, 550W is the same as the 3015F, which suggests a limit of ~47V continuous.
The RMS power handling of the 8 ohm version of the 3015LF is listed at 450W, suggesting a limit of 60V continuous. 50V seems a bit conservative for the 8 ohm version (suggesting an RMS rating of around 312W, significantly lower than the published rating), but of course nothing beats real-world experience with the drivers. I too would like to know what sort of alignment/enclosure the drivers in question were being used in.
They were in 30" wide t48s brian. A th will be a bit more forgiving, but again.... I have cooked them with a 50v limit and without touching that.
Yeah, a FLH would likely be a bit harder on drivers than a TH. Nowhere for the heat to go with the driver's motor encased in a sealed box. There's also the question of how quickly the smaller motor structure of a neo-magnet driver can wick heat away from the voice coil.
So, what actually failed, the coil itself, or the leads to the coil?
I used a 30" T48 for a little over a year pushed with a QSC GX5. I would approximate about 30 four hour shows. Sounded good but it was always hard to find a wall or corner to place them at our smaller shows. The driver looked like new so I guess we weren't pushing them too hard.
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