LPF and HPF on HU

[CodyWayne718]

Are these filters worthless or am I doing something wrong? I set my high pass to 125 then go to the eq and raise my 50hz and it still comes through me mids, what gives?

[graham]

What head unit and are you running any crossovers or EQ's other than the head unit?

[iamsonic]

simple answer: the eq is before the crossover so it effects the sound before the crossover can filter it.

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continued thought;
crossover filters on most decks are not audiophile grade. it might be 12dB per octave at best... so, if your 12dB/octave 'filter' is set at 125hz, at 62.5hz the sound is attenuated 12dB... but the sound is still there.

7 band eq: at best, the band width of each band extends halfway to the next band above it. (50hz band effects up to 87.5hz)

if you take your 7 band graphic eq and boost 50hz by 6dB, and that means about 4dB increase at 62.5hz, 'you will hear it in the highpassed speakers.'

consider the eq for the 'over-all' equalization.. and use the specific subwoofer adjustments for subwoofer tweaking.

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summary;

the eq is full sound equalization.

The manufacturer would need to segregate the eq sections to highpass or lowpass to make the 50hz not effect the highpass information.

I have seen Kenwood decks that have a separate 3band eq for the lowpass. they were pretty sweet decks.. {as long as you can read the display}

[CodyWayne718]

Thanks, makes sense. Guess I'll have to try something else. Really didn't want to use any kind of boost for the sub but with the 50 down far enough for my mids to not be muddy the sub stage seems weak. Also, I'm not using any other eq or crossover.

[iamsonic]

try different sources.

if you are streaming music from your phone, make sure the eq is off. {phones have eqs}

and make sure the SLA (source level adjustment) is set at zero.

also, if you have the highs amplified, adjust the amp gain down some. you might find the problem is saturated input signal.

these are just possibilities..

[CodyWayne718]

Originally Posted by iamsonic

try different sources.

if you are streaming music from your phone, make sure the eq is off. {phones have eqs}

and make sure the SLA (source level adjustment) is set at zero.

also, if you have the highs amplified, adjust the amp gain down some. you might find the problem is saturated input signal.

these are just possibilities..

CDs and memory stick, SLA is at zero, and highs aren't amped. I'll just have to tinker some more I guess