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Old 29th August 2006, 08:47 AM   #1
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Default bass lag?

Im sure this is a silly question, but why do some songs have their bass lag behind the music. Not by too much, but enough to ruin the songs. Some songs the subs keep in time, but a few, mainly the techno/dance sorts it can get behind, is there a way around this or is it just something known of subwoofers in cars?
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Old 26th September 2006, 07:44 PM   #2
mikee55 is offline mikee55  United Kingdom
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What sub and amp?

Perhaps a sticky to remind users to give more details before they post, would be helpfull.Cue Moderator
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Old 29th September 2006, 08:37 PM   #3
v-bro is offline v-bro  Netherlands
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Try flipping your subs phase. (swap + and - on the speakers).
This may put the timing better in the whole picture.
Not only the brand of the sub/amp makes the difference, also the location of the subs (near or far from the main-range speakers, listener in between or both in front or rear....?) is critical..
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Old 29th September 2006, 10:47 PM   #4
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Yes, but he said it only happens on some songs and as far as detecting lag inside a car, I'm not sure you can detect it as you can only be so far from the drivers.

Mystery to me.
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Old 29th September 2006, 10:52 PM   #5
Evazan is offline Evazan  United States
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I know what the original poster is speaking about and it is only really noticable in dance songs. I don't think it has anything to do with timing issues. Dance music the kick drum is usually hitting on the beat so its very noticable when it appears that its not. In my experience what is happening is the sub is still hitting on the right beat, but the you here an extended vibration from other parts of the car. Turn the bass down and see what happens.
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Old 30th September 2006, 09:27 PM   #6
v-bro is offline v-bro  Netherlands
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Offcourse! Very good way of describing it, never thought it could simply be delayed resonances.....

A car is not a very good listening-room indeed, the countless problems i've encountered designing my car stereo

Maybe self-adhesive bitumen can help you dampen whatever surface is giving the resonance.

This is the same stuff they stick to the bottom of metal bathroom-sinks against the overwhelming splashing water sound.

Finding the responsible piece of material can be tough though, but sticking it anywhere will have the advantage of making the car more "silent" overall, just go on till it stops......
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Old 3rd October 2006, 03:56 PM   #7
djQUAN is offline djQUAN  Philippines
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I also noticed it on dance songs. I originally blamed it on crossover phase shift...... not sure.

I don't think it could be resonance of other body panels or whatever since it seems to be too loud to be one. and resonance usually sounds different from the original music and this one is not......
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Old 3rd October 2006, 03:59 PM   #8
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Maybe that's the way the music is. I noticed that too on some techno songs that you hear the drum, and then after a while the bass comes.
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Old 3rd October 2006, 04:03 PM   #9
djQUAN is offline djQUAN  Philippines
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Quote:
Originally posted by xplod1236
Maybe that's the way the music is. I noticed that too on some techno songs that you hear the drum, and then after a while the bass comes.

yeah, could be. but at times it is too irritating to ignore.

another explanation is that what we hear is indeed resonance but not of the car, but of the drum. because in most car systems, the subs are set with a little more gain than the front speakers, the initial "kick" of the drum is barely heard but the resounding "boom" is recreated but more loudly........hence the perception of delayed bass?
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Old 3rd October 2006, 04:47 PM   #10
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Not always. I just listened to some techno songs, and several songs have the bass lag behind the kick. Others, you hear the bass along with the kick. I have my car system set up so you can't even tell I have a sub. I've tried turning up the sub, but that made no difference. It was clear that some songs have bass lag while others don't.

The resonance of the drum would start at the same time as the kick. It would make no difference if it's louder than the kick or not. On some songs, it's easy to hear the kick, pause, and then the bass (resonance).
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