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low pass/high pass settings

Printed From: the12volt.com
Forum Name: General Discussion
Forum Discription: General Mobile Electronics Questions and Answers
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=107306
Printed Date: May 15, 2025 at 5:05 AM


Topic: low pass/high pass settings

Posted By: 04nata
Subject: low pass/high pass settings
Date Posted: September 08, 2008 at 3:04 PM

Did not see a "How To" post on this so move if needed..

I run TMA amp, T2-500.1 on my pair of 12's in a ported box, I set the low pass filter at about 45hz, (filter is 40hz - 130hz) does that sound about right?,

I do not like "high" base at all, my old (way old) system was set at 75hz, I do not know what that is but I had some higher bass coming thru that was really annoying, but I don't want to miss anything, maybe 45 is too low, just let me know your opinions

I am going to run 4 each, 6.5 2way TMA's, 2-each Pioneer 6x9 5ways and 2-each 3.5" 2-way Blaupunkt or TMA, all running off the TMA t2-320.4, I should have a 2ohm load on each channel which should give me 80w x 4

question is,,,,,what do I set the high pass filter at?

I want some midbass and off course highs and do not really have the knowledge to purchase or install in line caps or coils, so what would the best setting for these be??? it has a low pass filter range of 40-150hz and a high pass filter range of60hz - 1.2khz

lastly - will the stock speaker wiring be sufficient for the high end speakers or should I run new lines throughout of bigger gauge? (lol, of course my first choice if plausable would be to NOT run new lines, ecspecially into the doors, since I have not yet figured out how to remove the panels)




Replies:

Posted By: reax222
Date Posted: September 08, 2008 at 9:18 PM
Low pass means it will pass frequencies upto the one set. Right now your crossover lets 0-45hz through. You don't need the high pass settings, these are for speaker that can produce 60-1.2kHZ

If your amp is 500 watts and your speakers are 2ohm (31.5v), this speaker would produce 15amps. As long as you have a very short run, the stock wires might be okay (say a couple feet from the amp to the subs.) The 320 watt amp would produce about 6amps per channel. You need to compare your wire lengths to the amperage to see if it will work.




Posted By: jmelton86
Date Posted: September 08, 2008 at 10:07 PM

When you get it all installed, set the high-pass on the front speaker. Turn the high-pass all the way up -the frequency, that is. With the volume turned up as loud as you'll listen to it (gain setting needs to be done before this step) on some music with alot of midbass, and slowly turn the h/p/f down until you get the speakers moving as far as you'll allow them.

Now, adjust the low-pass filter for the subs to the same frequency you just set the high-pass to.



-------------
2013 Kia Rio -90a alternator
DDX470HD GTO14001 GTO1014D (x3)
Big3 in 1/0G
1/0G to GTO14001




Posted By: 04nata
Date Posted: September 08, 2008 at 10:29 PM

reax222 wrote:


If your amp is 500 watts and your speakers are 2ohm (31.5v), this speaker would produce 15amps. As long as you have a very short run, the stock wires might be okay (say a couple feet from the amp to the subs.) The 320 watt amp would produce about 6amps per channel. You need to compare your wire lengths to the amperage to see if it will work.

I should be ok then, the rears are right above the amp & I will run good wire to them, the front I have ran good wire from the trunk up to the deck where I can tap into the stock wires that go to the door ( 3-4 feet max) but the heavier wire runs the length of the car.





Posted By: 04nata
Date Posted: September 08, 2008 at 10:30 PM
jmelton86 wrote:

When you get it all installed, set the high-pass on the front speaker. Turn the high-pass all the way up -the frequency, that is. With the volume turned up as loud as you'll listen to it (gain setting needs to be done before this step) on some music with alot of midbass, and slowly turn the h/p/f down until you get the speakers moving as far as you'll allow them.

Now, adjust the low-pass filter for the subs to the same frequency you just set the high-pass to.


sweet, thanx for the info.....





Posted By: 04nata
Date Posted: September 09, 2008 at 9:18 AM
Being that one of them is a 5way speaker, I am assuming that when I set the high pass to move the sub part of the 6x9, that the others probably have caps already in there to take care of that so I am not trying to put 75hz thru the tweeters?




Posted By: jmelton86
Date Posted: September 09, 2008 at 5:49 PM
Correct.

-------------
2013 Kia Rio -90a alternator
DDX470HD GTO14001 GTO1014D (x3)
Big3 in 1/0G
1/0G to GTO14001





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