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Car Forum / Driving, Maintenance, Tuning / Car Audio / April 2004newbie q: subwoofer help please
I just had a 12" woofer and 300 Watt amp installed in my car. I'm by no means a car audio enthusiast, I just wanted to have a fuller sound in my car that I wasn't getting from my stock system. It's a strong sound, but I can only really hear it well on songs with lots of bass (like White Stripes' 7 Nation Army) or when I crank the system. It also feels like there is a slight delay in the bass sound from the woofer (could be my imagination). It's installed in my trunk in a box, all provided by the shop that installed it. Any ideas on how to improve the sound at modest volumes? Some stock stereos will have a "loudness" feature which boosts the bass when the volume is low. It's only meant for quiet listening and should be turned off when you crank the volume, or serious distortion might result. The reason it's necessary is that human's don't perceive a uniform increase in volume across the audio frequency band as the volume is turned up. Kevin Murray > I just had a 12" woofer and 300 Watt amp installed in my car. I'm by > no means a car audio enthusiast, I just wanted to have a fuller sound [quoted text clipped - 6 lines] > > Any ideas on how to improve the sound at modest volumes? a long shot, but you might want to double check and see that the subwoofer is in phase with the rest of the system. that could make the volume seem lower at modest levels. by the time you crank it up though, i would imagine the bass from the sub would overpower the phase difference and you could hear/feel it, but that could be why the "delay" also. just a thought. trey > I just had a 12" woofer and 300 Watt amp installed in my car. I'm by > no means a car audio enthusiast, I just wanted to have a fuller sound [quoted text clipped - 6 lines] > > Any ideas on how to improve the sound at modest volumes? Explain "in phase", and how I can check to see whether it is in phase. Would that have to do with delaying my front speakers so they match better with the woofer in the back? Nathan > a long shot, but you might want to double check and see that the subwoofer > is in phase with the rest of the system. that could make the volume seem [quoted text clipped - 3 lines] > > trey No, not delaying, it's just making sure the speaker is in phase with the rest of the system. The sub doesn't give a sh.t which lead is positive and negative, only thing is, if you have them switched, it'll be doing opposite what it's supposed to do. You can hear the difference fairly easily, kinda like what you're describing. Just make sure the (+) and (-) leads are where they're supposed to be. If you've bridged your amp, make sure you have them right on that end as well. trey > Explain "in phase", and how I can check to see whether it is in phase. > Would that have to do with delaying my front speakers so they match [quoted text clipped - 9 lines] > > > > trey Okay, that makes sense. I'll try it out. Thank you. > No, not delaying, it's just making sure the speaker is in phase with the > rest of the system. The sub doesn't give a sh.t which lead is positive and [quoted text clipped - 5 lines] > > trey Putting a sealed enclosure in your trunk facing the car behind you is not the way to hear accurate, tight, bass at any level other than trunk lid flexing! To hear the bass at moderate level you need a ported or bandpass enclosure with a partially external, square (round ports tend to whistle) port rising from the top of the enclosure, through a carefully cut opening in the rear deck. The bass will then be delivered into the INTERIOR of the car not the trunk! P. > I just had a 12" woofer and 300 Watt amp installed in my car. I'm by > no means a car audio enthusiast, I just wanted to have a fuller sound [quoted text clipped - 6 lines] > > Any ideas on how to improve the sound at modest volumes? |
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