SETTING LPF SETTING ON YOUR AMPLIFIER AND HEAD UNIT

I show you how I setup my LPF Settings on my amp and head unit with a few options explained.

How to set LPF on amp
LPF Setting on amplifier
Where to put LPF On amp
Low pass filter on amplifier
how to setup lpf on an amp
lpf off or on?
lpf setting frequenc

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[muttBunch]

I've been wiring car audio since the late 80s. I think it's about damn time that all amp manufacturers finally start using tactile potentiometers across all amps in increments of 5hz. It would be way easier rather than giving a silly random range and not being able to tell accurately what it's currently at.

[Hertzsogood]

I just recently turned down my LPF because with my new build being at 28HZ, I figured the same think and turned it down from 80 or so and I gained. Awesome video.

[undergroundking]

I wanna learn every detail possible, but I’m always so busy. You help speed the learning curve up a lot. Your doing great man. 👊

[Shot_Holiday]

I had my new system sounding great when I first hooked it up. Then I went into the deck settings and messed it all up! I’m sure this will help me get it back to sounding great. Thanks

[-WolfMan-]

For Low Pass Filter, Noon is actually a really good starting point. I typically do about the same, mathematically speaking... but then I dial back Just a Tiny Bit more just to help Clean & Tighten things up sonically.

[LearningFast]

Talk about the “Real Wood” dash look.😃

[ajayahuja]

Hi Jacob, if you are setting the LPF on the stereo, just try setting the amp to max (200hz). This way one doesnt need to worry if the amp dial (like you did at 12 o clock position) is indeed say a 90hz or something. I do it this way and it sounds good as well as loud, though am not a true SPL person. May be you can test it that way and let everyone know how it works. Thank you for your regular content bro.

[simonmessina]

All you need to do is turn the lpf all the way to the right to the highest lpf settings eg 200hz. You then use the headunit xover eg 80hz -24db. If you try and match them you will cascade the slopes eg u will get -48db slope. You turn the lpf to the highest on amp so it’s out of range when it reads from the headunit. You won’t class slopes. In a nutshell turn lpf all the way to right use the headunit lpf do not match digital is the best way.

[zachcarlson]

All LPF is is setting a crossover at that specific frequency. Amplifiers usually contain a 12DB/octave slope, don’t overthink it. If you want your sub to stop playing music around 60hz, cool. Set it to 60. Just because a crossover is set to 60 doesn’t mean the speaker rolls off at 60, the slope usually starts before the desired frequency. Most set it at 80 because that’s where midbass is supposed to pick up. There is never a “correct” way to set it, mine is set to 55 in mine because my midbass picks up at 55hz and is confirmed through an RTA.

All in all, there’s never a correct way. Just need to find where the subwoofer either stops playing at in a ported/band pass box or where you want it to stop.

[Kpaceguy]

You DO NOT set both amp and head unit... home theater, car audio, nothing. If the head unit cuts off at 80hz to the sub at -24db per octave, it then sends the cut off to the amp at -24db and then your amp cuts it off more at whatever -db it has built in.. meaning your doubling the cut off... so now your subwoofer crossover isn't ROLLING off, it's completely DROPPING out compared to the rest of frequencies. There will be no blend with the highs and mids and will cause a gap between them..especially if you're doing the same incorrect method on your highs and mid amp. Pick ONE place to set your crossover and open the crossover completely on the other device.

[AudioGearhead]

Remember to not double crossover your speakers, either pass threw on the head unit and use the LPF on the amp, or full range on the amp and use the EQ on the head unit. Shouldn't EQ an EQed signal.

[hillbobaggins]

You can tune lpf and hpf with a multimeter. I just watched a video here on YouTube. The guy played the Hz freq through the head unit then watched AC voltage from the + & - speaker terminals on the amp and stopped adjusting when the voltage dropped off

[walterbrown]

I generally use my SMD CC-1 to set my LPF on my amp. I always set my head unit to bypass or on some pass through. I generally set my LPF to 80hz and I like my boxes tuned to 31.5 to 35hz.

[HardKnockss]

I'm running my lpf right at 67hz wall tuned to 37hz subsonic right at 27hz gain set clean volume 57 crossover for subwoofer OFF on 2018-2022 pioneer headunit my setup sounds amazing

[jamesrottweiler]

Good video for learning how to set I'm so new at this back in the day I would just hook my systems up and mess with it a little never got into all these things to do but it does pay off thanks for the information

[workingclassperson]

I use my head units high pass cause my 4ch cut off is to low with no adjustments but I don’t use the low pass on my head unit for my sub amp cause I heard/read the less you use your decks options the less it interferes with a clean signal and doesn’t consume as much current and I don’t use an eq I keep everything on my deck at 0 my sub out as well unless I’m listening to regular music not bass tracks like I normally bump. I’m tuned super low there are days when I want to go for a higher tune or just go sealed for that strong flat response but then I play a 20hz note with authority and I just think to myself what a wonderful blurry world

[mrfizch]

At 10:15, arent u setting your lpf on that amp on 110hz? 180/2=90 and then Add that to 20. Also, can u set your lpf and hpf using test tones? Lets say youre trying to set your lpf to 80 hz and u play a 81hz test tone to your sub. Then slowly turn your lpf knob until you cant hear the freqeuncy.

[jonathanklein]

What pioneer headunit you running. Been looking for one like that

[matthewstringfield]

Also if using a factory radio where you can’t set your lpf do you just go by double your box tune?

[noahkb]

I need a little guidance on slopes. My amp for subs has a 6 and 12db . My pioneer head unit has crossovers - running off head unit power- rear door 3 way 5.25 coaxials and xover is 6 to 24. Up front, again running off head unit to a 12 db passive crossover and set of components and again 6 to 24 db. The sub xover is 6 to 36bd slope. Sub range is 20hz to 300hz. Both sets of mids/highs are 67hz to 20k or something. Both the components up front and coaxials in back have a 0 or 3db boost feature.

Oh, and the mids and highs are JBL and rated 5-270 w 3 ohm. So my pioneer head unit pushes quiet nicely. Just adding that before someone gives me grief about not having the highs on an amp lol.

So recommendations? On. The front set of components, is 12 db in the passive and 12 on head unit the same as running 24 db slope on rear speakers..? Just clarifying that concept. What really get me is the phase issue and making a "hump" if my slopes are wrong.