High pass filter need


What is the best way to add a high pass filter to my front mains (Dynaudio C-1s) from my Mc intosh pre to McCormack DNA-2 amp. 
A seperate line out from the pre goes to my JL sub which has its own filter. 
I want the cleanest option that will not alter the C1 sound other than remove the lowest octaves they can’t really handle that the sub can. id like to reduce the amp and speaker from trying to work on the low end. 
bundy

Showing 1 response by 1markr

@bundy  

I'd suggest the Harrison Labs FMOD inline high pass RCA filters. 

I've used them, and they are quite transparent, and do the job just fine.  They filter at 12db/octave, so whatever value you get, take half of that value, and that becomes your -12db point.  For example, I have a pair of the 50Hz high pass filters, so the freq response is -12db (attenuation) at 25Hz.

They are around $25 ea at Amazon, Parts Express, etc.