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Using amp HPF or headunit sub setting

 

Bronze Member
Username: Slimdog53185

Bowling Green, Kentucky U.S.

Post Number: 99
Registered: May-07
Is it better to use the HPF on my amp or the setting on the headunit to send everything under a certain freq. to the subs? I have 2 subs on a 4 channel amp at the moment and setting both HPFs the same would be almost impossible.
 

Silver Member
Username: Skdooley

Roanoke, VA Usa

Post Number: 512
Registered: Oct-09
The filters on the amp will over-ride the HU. Get them as close are you can. I'm not sure but I think the HPF on the HU will control the filter on the inside speakers, not the sub.
 

Bronze Member
Username: Slimdog53185

Bowling Green, Kentucky U.S.

Post Number: 100
Registered: May-07
The hu says its for the sub. It has low (50hz), Mid (85hz), and high (115hz). Will it hurt anything if I use the hpf on the amp and don't get to exactly right?
 

Platinum Member
Username: Glasswolf

Columbia, SC USA

Post Number: 12897
Registered: Dec-03
use either one but do not use both, as the are cumulative for the slope.
Use one or the other.
 

Silver Member
Username: Skdooley

Roanoke, VA Usa

Post Number: 513
Registered: Oct-09
You'd want it at 85 Hz. If the HU can control it, then set the HU and put the sub amp on all pass, since its being filtered coming into the amp.
 

Silver Member
Username: Slimdog53185

Bowling Green, Kentucky U.S.

Post Number: 101
Registered: May-07
I have it setup now as Shawn said. I was worried about the slope cutting off some of the upper bass at 85Hz though.
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