dragnix
5,000+ posts
LXIX
you spelled lair and monster wrong //content.invisioncic.com/y282845/emoticons/fyi.gif.9f1f679348da7204ce960cfc74bca8e0.gif
Acoustic Elegance AV15
- Thread starter bumpin buick
- Live activity
- Replies 261
- Views 19K
dragnix
OP
bumpin buick
5,000+ posts
Science is everything
- Thread Starter
- #242
at work on cell phone, my bad
I wanna see how it performs in 3.5 tuned to like 33.
For those interested, I just got my ED 11Ov2's installed yesterday. They do not seem to exhibit the lack of upper frequency extension that the AV15 did. This is now 3 separate drivers that have not exhibited this problem in my vehicle. Perhaps it's time to stop blaming the user or the vehicle and start (rightfully) blaming the poorly performing drivers???
A comment from a friend who's not much of an audio person was simple 'wow, these things have WAY more range than that 15 you had did" >_>
A comment from a friend who's not much of an audio person was simple 'wow, these things have WAY more range than that 15 you had did" >_>
and kendogg, not trying to start anything, but why do I feel like you take so much time out of your day to put down AE? Lol
We've covered this MULTIPLE times.
You got 4 10's vs 1 15 of course its got more output, are they sealed or ported that'll make a difference also in upper extension. Those ed's are basicly a chinease TC9 replica nothing special.
Thats besides the point. The point is, EVERY driver I've tried in the car has significantly more output above 50-60Hz.
sundownz
Pro Seller
Supporting Vendor
Ken,
MORE output above 50-60 or LESS output below that ?
The AV may have had exaggerated low-end which appeared to be lacking high-end... some folks said the same about the Brahma because of how much low-end they had.
MORE output above 50-60 or LESS output below that ?
The AV may have had exaggerated low-end which appeared to be lacking high-end... some folks said the same about the Brahma because of how much low-end they had.
bass_lover1
10+ year member
Metal Head \m/ \m/
And the older RE XXX, probably the W7 as well.
Significantly more output in the upper end. The easiest song for comparison is Chop Suey from System of a Down. With the AV15, you couldn't even tell I owned a subwoofer, it was rather annoying. With these, however, it's quite loud, and I get a very nice 'kick' in my back with every beat in that song. It does, however, fall off in the extreme low end compared to the AV15, but thats expected. The AV15 was a bottom dweller, and these are in a small sealed enclosure (2.2 cubes, .55 per driver).
OP
bumpin buick
5,000+ posts
Science is everything
- Thread Starter
- #252
Here is the sube sent back by Papermaker, which was your as well. Sure seems like the problem was yours
Notice about ten forum memebers in the background to all verify this and the fact it was that sub.
Notice about ten forum memebers in the background to all verify this and the fact it was that sub.
Apparently since you have the desire to post your response in every thread I should post my response everywhere. I'm hoping that just maybe one of these times you'll take enough time to actually read and try to comprehend what is going on here. I think just about everyone else can understand. The 10 people who were here from the forum on saturday heard the already damaged papermaker woofer STILL playing to 200hz. No lack of upper end response. And that was with a small 125W/channel amplifier. You can see the videos here as well as all the people here to witness.
http://www.caraudio.com/forum/showthread.php?t=418231
Thanks to Bumpin Buick for the videos.
Again I'll try to educate you, although I'm starting to feel like i'm talking to a rock. If you have no upper end response it is due to your setup, not the woofer. I spent some time measuring transfer functions in Bose301's Jimmy, my Audi S4, and my bravada. One of the things you will find out is that positioning has a HUGE effect on upper bass response. You have a time delay from the direct signal off the woofer and the reflected signal off the back of the vehicle. This delay causes a substantial notch in frequency. Below are the measurements in Bose301's Jimmy.
You can see that the red curve is smoothest and has the least amount of drop in the upper region. This is because the distance from the woofer to back of the vehicle is only a few inches. Any dip occurs well above 200hz and is not an issue. The closer the box is to the back of the vehicle, the better the upper response will be. If you have your box firing forward right behind the back seat this maximizes the time difference and you get the most significant dip at the lowest point in frequency. This is seen in the orange curve. The difference at 88hz between the 2 positions is 20dB. Output is lost everywhere from 57hz on up to over 100hz. Bose301's now stated he has much better upper end response from the same woofer just due to positioning. This of course makes perfect sense to most people.
As another example, here are the measurements from the 01 Audi S4. Again we see the same thing. Box at the back of the vehicle firing towards the back of the trunk gives the best results. Box firing forward at the back of the seat again is very poor. Box firing up actually causes even more loss lower in frequency.
In case this isn't becoming clear yet, here is one more set of measurements from the 02 Olds Bravada. Again from 65hz on up, there is much more upper bass with the box at the back firing back. This vehicle, which i drive all the time has another cancellation that I have to deal with. The dip at 65hz occurs only at the headrest position and is changed due to mic placement. It just so happens my head has to go in that spot where the dip is.
What we can see here is that over and over, you lose upper bass output due to positioning. The current measurements were with the subwoofer only from 10hz to 200hz. No front stage was brought in. The other thing that affects the upper bass response is the integration with the front stage. That will be a lesson for another time though.
John
Parker G
10+ year member
CarAudio.com Elite
Passive Radiators??????
Activity
No one is currently typing a reply...
Similar threads
About this thread
