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Bavarian Soundwerks' Mobile Electronics Forum
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Old 04-01-2009, 08:36 AM   #1
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Dimming

I noticed when my music is almost at full volume, when bass hits, my LED angel eyes dim slightly. Nothing else dims... Are LED sensitive to power draws or something?

Just curious.

edit:

Running JL 300/4 and a 500/1 and have a yellow top battery...
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Old 04-01-2009, 08:32 PM   #2
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anyone?
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Old 04-02-2009, 12:27 AM   #3
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sounds like you might need a capasitaeter due to the sound system drawing a lot of power. dose it dim more when the bass hits hard or dose it dim when you turn on the music and it stays with the same low output on the lights (no flickering)? more info plz
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Old 04-02-2009, 09:15 AM   #4
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sounds like you might need a capasitaeter due to the sound system drawing a lot of power. dose it dim more when the bass hits hard or dose it dim when you turn on the music and it stays with the same low output on the lights (no flickering)? more info plz
what?

My LED angel eyes slightly dim when bass hits at high volumes... nothing else seems to dim though.

and I have a cap already.
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Old 04-02-2009, 10:23 AM   #5
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Where are your angle eyes wired to?
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Old 04-02-2009, 12:42 PM   #6
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Where are your angle eyes wired to?
Wow, I'm drawing a blank. I used the power wires that came with the original predator chromium kit... and I honestly forget where it's getting it's power... :\
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Old 04-02-2009, 05:35 PM   #7
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if its like my kit, it gets power from the distro block under the hood. Dont know what to recommend, im running 1600wrms and dont have issues.
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Old 04-03-2009, 12:33 AM   #8
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check your wire connections for your angel eyes to make sure they are all secured. where did you ground the kit? it may not be making proper ground
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Old 04-03-2009, 09:31 AM   #9
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I agree - something isn't secure with your wiring. Grounds are the first place to look.
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Old 04-03-2009, 10:05 AM   #10
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LEDs turn "on" and "off" a lot quicker than filament bulbs, so you would notice current surges more than regular bulbs in the car.

With 800 watts, nothing should dim in the car. I would make sure that:
- amplifier gains are properly adjusted to match input.
- you are not boosting bass at the head unit or amplifier
- you have good power and ground connections to the amp
- your battery has good, clean connections (and good ground).

Check battery and alternator to make sure they are both fine.
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Old 04-03-2009, 01:26 PM   #11
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LEDs turn "on" and "off" a lot quicker than filament bulbs, so you would notice current surges more than regular bulbs in the car.

With 800 watts, nothing should dim in the car. I would make sure that:
- amplifier gains are properly adjusted to match input.
- you are not boosting bass at the head unit or amplifier
- you have good power and ground connections to the amp
- your battery has good, clean connections (and good ground).

Check battery and alternator to make sure they are both fine.
When you say "boosting bass" at the head unit, do you mean adjusting the 'dB' level of the sub? I thought when you adjust that level, it's essentially adjusting the gain on the amp itself? I'm confused, so are you saying that everything on the head unit should be set to 0? If so, that means I can't adjust bass, mid, treble, without having problems? That doesn't make sense to me... help me understand...

Yes, I do have the sub bass adjusted on the head unit, currently it's at 9db...

Also, I just tested a bit. My overhead reading light appears to be dimming ever so slightly as well. Nothing else dims... dash is fine, head lights are fine, etc. Interestingly enough, I turned the entire sound system off.... and I noticed that the overhead reading light dims when I turn on the heated seats... Ever 20 seconds or so, there is a slight dimming. Perhaps I have a different issue?

Thanks
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Last edited by RangerX; 04-03-2009 at 01:28 PM.
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Old 04-03-2009, 01:55 PM   #12
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Ideally, you would never turn the bass, treble controls up or down. by doing this, you are modifying the "original recording" . If you are boosting bass to +9dB, then you are increasing bass, which in turn most likely creates distortion.

If you say that lights dim with the stereo off, then you have another issue. I would focus on checking battery connections, battery and alternator rather than the audio system in your case.
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Old 04-03-2009, 01:57 PM   #13
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Quote:
Originally Posted by ca1242 View Post
Ideally, you would never turn the bass, treble controls up or down. by doing this, you are modifying the "original recording" . If you are boosting bass to +9dB, then you are increasing bass, which in turn most likely creates distortion.

If you say that lights dim with the stereo off, then you have another issue. I would focus on checking battery connections, battery and alternator rather than the audio system in your case.
Ok, I'll look into that. When yo usay check alternator connections, what exactly do you mean? Should I be checking it back in the battery compartment, or should I have someone actually look at the alternator under the hood? Also, I'm confused on how a battery issue would cause dimming lights from the seat heaters... it's that directly drawn from the alternator?

Thanks
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Old 04-03-2009, 02:02 PM   #14
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its the hole in ur trunk
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Old 04-03-2009, 02:11 PM   #15
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its the hole in ur trunk
hahah!!!
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Old 04-03-2009, 02:32 PM   #16
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This doesn't sound like anything more than your amps pulling down the voltage from your battery / alternator, and yes, LEDs are a lot more sensitive to slight voltage variation than regular "filament" light bulbs, so minor dips in voltage will show up.

I wouldn't get too excited about it though - if you're spending enough time in the car with the sound system turned up that loud, your impending deafness will be a bigger problem...

If you are really anal about your angel eyes "not blinking", you could either install a capacitor on their power source (with a little isolation from the rest of the electrical system in the form of a low-value resistor or maybe a diode that will block the rest of the car "borrowing power" from your angel eye capacitor. Oh, BTW - it won't have to anywhere NEAR the size of the one you're using on your amps... those angel eyes should only draw a very small amount of power.

There is one other possibility though - maybe your angel eyes aren't really dimming, but the irises in your eyes are jerking shut when the thump from your woofers hits 'em!
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Old 04-03-2009, 02:42 PM   #17
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Quote:
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This doesn't sound like anything more than your amps pulling down the voltage from your battery / alternator, and yes, LEDs are a lot more sensitive to slight voltage variation than regular "filament" light bulbs, so minor dips in voltage will show up.

I wouldn't get too excited about it though - if you're spending enough time in the car with the sound system turned up that loud, your impending deafness will be a bigger problem...

If you are really anal about your angel eyes "not blinking", you could either install a capacitor on their power source (with a little isolation from the rest of the electrical system in the form of a low-value resistor or maybe a diode that will block the rest of the car "borrowing power" from your angel eye capacitor. Oh, BTW - it won't have to anywhere NEAR the size of the one you're using on your amps... those angel eyes should only draw a very small amount of power.

There is one other possibility though - maybe your angel eyes aren't really dimming, but the irises in your eyes are jerking shut when the thump from your woofers hits 'em!
lol, thanks for the input...
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