2. amps-preamps
  3. 165627-159938

how to Implement a High Pass Filter in my setup

hi all , 
i would like to know what's the best way for me to limit full range signal going to my front speakers. 
and at the same time managing cross over on my two subs. 

in my setup where its source > Digital Coax > DAC > Pre Amp > Amp , i have read that this can be done with a high pass filter. 

i need the flexibility to be able to change the dAc or pre amp or amp depending on my future needs. 

the question i have are
should the cross over setting just be set on the subs themselves?
where does the sub plug into in this signal chain?
if using a high pass filter is the best solution - which one should i get ?


kearkg312

Showing 3 responses by erik_squires

erik_squires
15,657 posts
 
do i then just set the cross over on the sub ?


Yes. It may help you to think of a crossover as having two components which are independent.  A high pass component, allowing high frequencies, and a low pass, allowing bass.  In this case they won't exist in the same device, but will work just the same.
erik_squires
15,657 posts
 
I hope you aren't feeding the sub from a high pass filter! :)

I hope you mean that you send one through a high pass filter to your amp, and the other goes to your sub.
erik_squires
15,657 posts
 
I'm absolutely not good with the idea of running the main speakers full range and grabbing the signal after the amp.  The benefits of limiting the output to the mains is too great.

Split the signal from the preamp, either using multiple outputs, which some preamps have, or a Y cable.

Put a capacitor right before the amp. You'll need to know the input impedance of your preamp and selected high pass frequency.  I suggest 80 Hz.


http://www.learningaboutelectronics.com/Articles/High-pass-filter-calculator.php#answer1
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