Acoustic Elegance AV12-X D2!

[John_E_Janowitz 10+ year member]

Did I say I don't understand?? I still do. If I decide to up or down-fire a driver, it's my problem. It was simply more evidence proving my point - which was how flippy-floppy you are.

I'm not sure how i am flippy floppy. I have never recommended to play any driver upwards unless necessary where you cannot physically fire it horizontally. My comments were talking about the measurements in Bose301's vehicle. We fired the driver to various positions simply to illustrate the fact that there are great differences in upper bass response due to the position of the driver in relation to the front stage. I had never recommended that he always keep the driver firing upwards. It was in that position for a total of about 5 minutes or so. Before he left he returned it to a horizontal firing position. The point was simply to evaluate the amount of interaction between the front stage and the subwoofer. Changing the subwoofer position while not changing the level or xover at all will tell you a lot.

Bose301's actually just purchased the Zapco DSP6 unit I believe, but he could verify that. Next time he comes down I'll be helping him set this up properly. He'll also be able to evaluate an AV12X vs the SI MAGv4 he has now and give his own thoughts.

John

 

[ninjawhiteboy12 10+ year member]

hey john, have you started the 3in voice coil subs yet?

 

[nastyaudioman 10+ year member]

Originally Posted by John_E_Janowitz 04-08-2007, 05:44 AM just a quick note on up or downfiring a woofer. Any woofer when firing up or down will have an immediate bias to the suspension. The coil starts in an off center position. This is not good for linearity at all and will cause some extra distortion due to not having the same amount of force on the coil in both directions. In addition to this, if you have it firing up, gravity works with the force of the motor on the downward stroke and against it on the upward stroke, further making it non-linear. The same in a downfiring. Over time the suspension will bias more and more and it becomes more and more non-linear. You will end up running into suspension limits quicker in one direction than the other limiting your excursion capability. To make that all worse a biased spider is something that voids the warranty policy with every manufacturer I have ever seen. It comes under the line of improper use as the driver was never intended to operate with the coil off center.

This is asinine.

 

[Papermaker85 5,000+ posts]

kevin went threw the same shit with adire.. good luck fellas

 

[microhaxo 10+ year member]

Just wanted to chime in, the sub still sounds great! no issues.

 

[ninjawhiteboy12 10+ year member]

do you think you have broken it in yet? did you notice a change?

 

[Koon 10+ year member]

I feel like this AV drama is never going to end. and every single thread that has anything to due with an AV continues on for pages and pages with a bunch of mumbo jumbo I can't understand. I'd really just like to know if the sub is good or not, lol.

 

[microhaxo 10+ year member]

The sub sounds great, it was really hot and my car was in the sun all day and the sub still worked great.

 

[ninjawhiteboy12 10+ year member]

why dont you send it some more power and see what it can really do?

 

[microhaxo 10+ year member]

Why? it's exactly how i want it. I'm sending it plenty of power, more than most people would anyway. I set it up to play at RMS very carefully, i have no intentions to surpass or even attempt to see what the sub is capable of past 1000w. I dont understand people. The sub is rated for 1000w RMS.. The sub is rated to run at that nominal power for a reason. If you want to run more power than instructed then look for a sub that has a higher nominal power rating.

The whole reason why this whole drama started is because of people trying to do things that they shouldn't do.

would you try to run your car that has a max of 6k rpm at 8k rpm?

Are people forgetting that this is an SQ sub? It just happens to get loud. Its not an SPL sub, i dont want a fart machine, i want clarity.

 

[kendogg 10+ year member]

nominal power rating.
The whole reason why this whole drama started is because of people trying to do things that they shouldn't do.

would you try to run your car that has a max of 6k rpm at 8k rpm?

Are people forgetting that this is an SQ sub? It just happens to get loud. Its not an SPL sub, i dont want a fart machine, i want clarity.

I also ran 1000 watts to it. I also wanted clarity. And rpm depends on the engine. Stock, probably not, but again, depends on the engine. Few and far between are engines designed to run 2k over the limiter without having harmonics issues.

 

[microhaxo 10+ year member]

Well im sorry you had problems kendogg, my sub appears to be just fine. I bet yours had a defect in it or something.

the rpm thing was an analogy but w/e.

This sub hits PLENTY hard at 1000w, i have ZERO desire to turn it up at all.

 

[ninjawhiteboy12 10+ year member]

oh my bad i thought you were running it at 800 wrms, i wouldnt run it past 1000 wrms either, it looks like it has worked very well for you

 

[microhaxo 10+ year member]

Music is dynamic. For instance the song Young Jeezy - Put ON with kanye west. There is 30 seconds in that song where the bass is at a -3db level, if i where to play that song i would be pulling over 1200w RMS. There is another song by young jeezy White girl and that only draws 754w RMS on the hardest bass hits. And if i would play Bass I love you, well i would most likely break the sub, i believe that track is a 0db track or very close to that if not.

 

[WS2186 10+ year member]

Music is dynamic. For instance the song Young Jeezy - Put ON with kanye west. There is 30 seconds in that song where the bass is at a -3db level, if i where to play that song i would be pulling over 1200w RMS. There is another song by young jeezy White girl and that only draws 754w RMS on the hardest bass hits. And if i would play Bass I love you, well i would most likely break the sub, i believe that track is a 0db track or very close to that if not.

Thanks for the intelligent review microhaxo. Very much appreciated. I am going to have my AV10s installed soon, with a highpass filter in place and in a proper alignment and I anticipate that I will have stellar results as well. I will be getting TL'd right after install as well so I can have some quantifiable results to post as well.