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#1
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Facing subs towards driver or away
I been having a debate with some mates lately on which is better, to have
you subs facing the driver or out the back of the car? any opinions Jeff |
#2
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Facing subs towards driver or away
On Sun, 23 Nov 2003 20:18:05 +1100, "Jeff"
wrote: I been having a debate with some mates lately on which is better, to have you subs facing the driver or out the back of the car? any opinions Jeff each car is different...kinda... try it in your car and see what sounds best. IN THEORY, id say facing away will sound better. If you do the math, a bass wave length is like around 15 feet long. So pointing towards the trunk allows for the chance of the sound bounceing off of the trunk and giving it a longer distance before it hits your ear...thus louder ... but, sometimes pointing them straight up sounds best. THUS, i say it depends on the vechile then again ... i am baseing my knowledge on junk i learnt thru out engineering school... real world stuff is much different then science! |
#3
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Facing subs towards driver or away
IMHO it depends on the car and its coustics... gotta experiment to find
what works and what doesn't. Gonna try pointing my powerbase 15 to the rear of my hatchback and perforating the hatch cover lid. Garrett Jeff wrote: I been having a debate with some mates lately on which is better, to have you subs facing the driver or out the back of the car? any opinions Jeff |
#4
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Facing subs towards driver or away
You shouldn't need to perforate the hatch cover. It's not thick enough to
affect the bass. Paul Vina "sanitarium" wrote in message ... IMHO it depends on the car and its coustics... gotta experiment to find what works and what doesn't. Gonna try pointing my powerbase 15 to the rear of my hatchback and perforating the hatch cover lid. Garrett Jeff wrote: I been having a debate with some mates lately on which is better, to have you subs facing the driver or out the back of the car? any opinions Jeff |
#5
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Facing subs towards driver or away
i have heard putting subs at the back facing forward have mor
cancellation issues due to wave bouncing off the back end an cancelling the front wave...i read it in a website... and according t it.. subs facing back and as close to the trunklid or hatch USUALL yeild best results..HOWEVER..i recommend you try them out and see what better...shouldnt take too much effort - s7one ----------------------------------------------------------------------- CarAudioForum.com - Usenet Gateway w/over one million posts online View this thread: http://www.caraudioforum.com/showthr...threadid=16622 |
#6
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Facing subs towards driver or away
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#7
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Facing subs towards driver or away
i have heard putting subs at the back facing forward have more
cancellation issues due to wave bouncing off the back end and cancelling the front wave...i read it in a website... You can also read about alien visits on websites too. At bass wavelengths (17 feet @ 60 Hz and much longer at lower frequencies) (and shorter at higher frequencies) there just aren't any "cancellation" issues going on in the car cabin. Sure there are. The wavelength is on the order of car size. A 9ft path length difference is enough to put the 60 Hz wave completely out of phase. A 90 degree shift requires only 4.5 feet. That can easily be the path length difference that the poster was referring to. In your living room the standing wave region will occur in the bass range (roughly 30 to 300 Hz) but in a much smaller space this is shifted up by about an octave (60 to 600 Hz in a small car.) But even at 60 Hz any 'cancellations' will occur at a fraction of a wavelength (200-300 Hz) and not at the fundamental. You don't need 180 degree differences to create attenuation or any other response irregularities. Even so, why are you ignoring the importance of "higher" frequencies? |
#9
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Facing subs towards driver or away
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#10
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Facing subs towards driver or away
Then how come it still makes a difference in a sealed box? And I do mean
sealed I tested my box under a vaccuum before putting the speakers in and I seriously doubt air gets past the subs with what I used to seal it. "Nousaine" wrote in message ... "Jeff" I been having a debate with some mates lately on which is better, to have you subs facing the driver or out the back of the car? any opinions Jeff Here's the deal on this. At subwoofer frequencies it makes no difference which way the face of the woofer points. IOW, you can't aim a subwoofer. On the other hand, it's often useful to face the driver/port away from the listeners ears. This is because distortion products (higher harmonics), port noise, suspension noise out-of-band artifacts and mid-range reflections off the back wall of the enclosure radiated through the cone can help cause localization. So facing the driver/port away from the listener so the cabinet helps acoustically shadow these sounds can be useful. Because acoustic sounds at subwoofer frequencies (approximately 100 Hz) are omnidirectional the SPL/Frequency response will be uneffected either way. |
#11
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Facing subs towards driver or away
did you not understand what you read or were you trying to reply to a different post? "Luke Hague" wrote in message ... Then how come it still makes a difference in a sealed box? And I do mean sealed I tested my box under a vaccuum before putting the speakers in and I seriously doubt air gets past the subs with what I used to seal it. "Nousaine" wrote in message ... "Jeff" I been having a debate with some mates lately on which is better, to have you subs facing the driver or out the back of the car? any opinions Jeff Here's the deal on this. At subwoofer frequencies it makes no difference which way the face of the woofer points. IOW, you can't aim a subwoofer. On the other hand, it's often useful to face the driver/port away from the listeners ears. This is because distortion products (higher harmonics), port noise, suspension noise out-of-band artifacts and mid-range reflections off the back wall of the enclosure radiated through the cone can help cause localization. So facing the driver/port away from the listener so the cabinet helps acoustically shadow these sounds can be useful. Because acoustic sounds at subwoofer frequencies (approximately 100 Hz) are omnidirectional the SPL/Frequency response will be uneffected either way. |
#12
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Facing subs towards driver or away
I guess you didn't read Nousaine's post, which was what I was replying too,
which is in this thread. "sancho" tR-003.at.ev1.dot.net wrote in message ... did you not understand what you read or were you trying to reply to a different post? "Luke Hague" wrote in message ... Then how come it still makes a difference in a sealed box? And I do mean sealed I tested my box under a vaccuum before putting the speakers in and I seriously doubt air gets past the subs with what I used to seal it. "Nousaine" wrote in message ... "Jeff" I been having a debate with some mates lately on which is better, to have you subs facing the driver or out the back of the car? any opinions Jeff Here's the deal on this. At subwoofer frequencies it makes no difference which way the face of the woofer points. IOW, you can't aim a subwoofer. On the other hand, it's often useful to face the driver/port away from the listeners ears. This is because distortion products (higher harmonics), port noise, suspension noise out-of-band artifacts and mid-range reflections off the back wall of the enclosure radiated through the cone can help cause localization. So facing the driver/port away from the listener so the cabinet helps acoustically shadow these sounds can be useful. Because acoustic sounds at subwoofer frequencies (approximately 100 Hz) are omnidirectional the SPL/Frequency response will be uneffected either way. |
#13
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Facing subs towards driver or away
Nousaine dont know ****.
He claims turnng your box to aim to the back in a car makes no difference.... he needs to get out more into the real world... Every punk kid with a woofer box knows it does! Luke Hague wrote: I guess you didn't read Nousaine's post, which was what I was replying too, which is in this thread. |
#14
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Facing subs towards driver or away
Luke Hague wrote:
I guess you didn't read Nousaine's post, which was what I was replying too, which is in this thread. Nousaine? BWAHAHAHAHAHAHAHA! -- Lizard Nousaine in the Membrane |
#16
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Facing subs towards driver or away
In article ,
"Jeff" wrote: I been having a debate with some mates lately on which is better, to have you subs facing the driver or out the back of the car? any opinions Jeff the way that sounds the best in your car. -- cyrus *coughcasaucedoprodigynetcough* |
#17
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Facing subs towards driver or away
try them both ways and choose the one that sounds best to you.
Most folks like the woofer box facing the rear of the car. Eddie Runner http://www.installer.com/tech/aiming.html Jeff wrote: I been having a debate with some mates lately on which is better, to have you subs facing the driver or out the back of the car? any opinions Jeff |
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