Speaker frequency resoponce

[spin mobile disco]

Made a nice long thread about this and pressed wrong button hey ho.
Ok in nutshell if your speakers can only go down to for example 40 or 50hz is there any point in providing them with a signal below this. So if I use a program to remove all frequencies below this then my speakers will not waste power trying to reproduce them is that correct?
I don't use an Eq but have a problem with a couple of songs requiring way more power than they should use for the percieved voule my guess is they are providing a signal to low for the speakers to produce and the power is being wasted is this correct?

My other post was much more in depth but hope this is enough info to get some answers. I think iknow the answer but wanted some confirmation on this.

[A1DL]

Ok in nutshell if your speakers can only go down to for example 40 or 50hz is there any point in providing them with a signal below this.

No point at all - for vocal PA jobs without subs, I'll always take 25 & 31hz right down on the DN360.

Less unnecessary work for the amp racks and less heat at the LF transducers.

[spin mobile disco]

Thats what I thought as well. But just looking for confirmation.

[Tony Scott]

Does your amp(s) have sub sonic filters, I have a few amps which have 30hz and 50hz High-Pass filters, if I choose the 50hz then it effectively does what you're trying to achieve....

....without looking I think it's my Behringers and/or QSC's. :)

[spin mobile disco]

Ah mine are all powered speakers and I have no information on the filter unfortunatly. Hence why I thought I could acheive same result by editing the files frequencies in adobe audition.