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FI Q18 power handling

2122 Views 4 Replies 4 Participants Last post by  Ryan Anderson
Hi guys

After seeing Ryan's thread on the Exodux forum asking what the real capable power handling of the mealstrom. It got me thinking about the Q18 driver. What is the REAL WORLD power handling on one of those. I have the BP power upgrade which quotes:

Bp Power - This option adds a machined aluminum compression plug to the pole which helps channel all of the air under the dustcap around the coil for better cooling. To aid with this increased airflow we also add 6 axial cooling channels in the top plate. Along with increased thermal capacity comes the addition of an extra spider and a changed spider pack. All of these features increase power handling from 200-500 Watts depending on the application. 

So I am guessing but my two Q drivers should handle more than the quoted 1000 watts.

Perhaps someone could elabirate on this. Is 1000 watts a safe power output and would they take all of the 1250 watts rms that outputs from the Behringer EP4000 amp.


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Who knows how much real power you are outputing even measuring (impedence, voltage and current) and it also has is shortfalls due to signal level used and box rise etc.

Unless the cone is warm/hot and or you can smell coil burning your normally ok.
I have mine set to 80db and even at -6db on the onkyo watching transformers 2 the subs were only just getting warmed up. Even the low parts in the film didn't throw up much excursion at all and only 5 green lights on the BFD max. Loads of bass though. I have suspected that I may have a low level input from my receiver to my EP4000 for a while now but I have wondered what 1200 watts rms into each driver would actually sound like and how loud.


More often a function of the enclosure and system mechanically than thermally. 1000W is somewhat conservative even for the abusive autosound environment. But as a manufacturer it would be irresponsible to tell people to do more than recommended as not all customers skill sets are such that they can measure and build for that.

I the house I have 2500 watts ber IB3 and in the car 3000 :D Never been a problem except from clipping.
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