Rec. High-Pass Frequency

[ultra60]

I have a pair of EV EKX passive 12's.

Frequency Response (-3 dB): 82 Hz — 18 kHz
Frequency Range (-10 dB): 55 Hz - 20 kHz
Rec. High-Pass Frequency: 55 Hz

Why would I need to set a HPF at 55 Hz? Is this implying the crossover point?

Thanks.

 

[RoadRanger]

Sending frequencies to your cabs that are below what they can reproduce is a waste of power and can cause excessive heating and/or over excursion of the woofer resulting in its death.

 

[ultra60]

ok thanks. I would have thought the speaker would be incapable of reproducing those frequencies, but I believe I am following you that it is wasting power, etc.

 

[fretless_bill]

Ultra 60 specs
Frequency Response (-3 dB): 82 Hz — 18 kHz
Frequency Range (-10 dB): 55 Hz - 20 kHz
Rec. High-Pass Frequency: 55 Hz

The speaker will try and reproduce below 55Hz but its audible output below that frequency will be at least 10db below the rest of what it's producing. That's is why it says (-10dB) 55hz to 20KHz.

So there will be wasted power below 55Hz by whatever amp is driving it. Also true above 20KHz but that takes very little power and no one can hear up there anyhow.

 

[monkeyland]

if you are using that speaker on it's side as a monitor wedge then go ahead and roll that Hi-pass up even higher. 100 or so.