i have had this deck for over a yr now and can tell you its marvelous... and yes it bypasses the crap dac from apple..please remember this deck does everything and everything very very well but is pricey.... my last system was a denford with two r.f. 360.2s and this unit eats it for dinner...... but... but for someone who wants to keep a factory system or just replace the factory head unit and not do a full out audio swap.. i would go with the jbl ms-8.. this thing makes any stock system fantastic.. i just might pick one up and add it to my dex-999rs..

 

Quote:
Originally Posted by SOULMUSIC
How long does it take a subwoofers magnet to lose power? And about how much potential difference/SPL loss can it make?

I ask because our 3rd sub is now built and zapped and on its way today, I think the builder seems to think that the new sub will be better than our other two because of the fresh magnetizing.

The others were done last year. Should I magnetize the other two also to make them all fresh, or will the difference not really be noticable?

__________________________________________________ ___________

Here's the true danger in all of this - all magnets have OEM spec's the important ones are the summary specs:

Maximum Energy Product (BHmax), measured in MegaGauss Oersted (MGOe). This is because the size and shape of a magnet and the material behind it (such as iron) have a large effect on the measured field strength at the surface, as does the exact location at which it measured.

Coercivity (Hc): This measures a magnet's resistance to demagnetization. It is the external magnetic field strength required to magnetize, de-magnetize or re-magnetize a material, also measured in Gauss or Tesla.

And I am quite certain that this data will not be available. Also, the magnet would have to be removed from the basket etc...

If your customer desires a tight tolerance between each driver - the only way to ensure it is to purchase all new drivers with sequential serial numbers.

I should also add that losses in the drivers suspension will be many-many times greater than any losses in the magnet - unless it was dropped.

 

F#$k 1 out of 10, bang for buck, THAT'S WHAT I WANNA HEAR!!

 

Pricey yah, already own one. Check out (dual lrx 5.1 build ) sq for a list of my gear. Not jacking thead.

 

i wood check it out if i had a web link.. dual lrx5.1build

 

WOW!!! Where did you come from? You are ssoooooo smart. Thanx for answering that but you are so far off. Is it blueberry or skunk before you come online? You really need to go to the sq section and stop cutting up spl if you really have nothing good to say. If you really want to, I'm willing to invite you one of my testntune sessions where we can sit and talk and maybe you can provide some up-to-date input. I'm serious. Please take my up on this offer as I'd like to hear your point of views on spl and how it relates to my vehicle. Its seems as though my 158+ could really use some help.
^^^^What he said

 

I am as well. I received my Electronic Engineering Technician degree from RCC. Radio College Of Canada.

 

True story: When i first started doing spl in 2006 I went to a shop at checco's shop and there were a couple of MD students there is an old 300zx or something like that. They looked at my 92 Z24 and it's setup and laughed. I went up for my first run ever and did a 139.8. After that they tried to help me and I couldn't break a 137. They brought me over to their car and show me their setup. All sony. They said don't worry this equipment will smoke the grand cherokee and all the other rides here. Needless to say they went up, did their run, broke a 137 and drove straight outa the parking lot. So much for having all the knowledge in the world and not being able to put it to use. Dogbaker, I will pay you $1000. If you can make my car louder than 158dbs. I am issuing an challenge to you. Are you willing to accept my challenge. I do have the money but I know you can't cause I know first hand that theory don't mean when it comes to spl. If you can make my car break a 159 then the money is yours. You can't though cause you're not the man. LONG LIVE DA FADDAH!!!!!!!
P.S. That 158 is from Father Yuli by the way. So c'mon and either put up or SHUT THE **** UP!!!!

 

ouch you are really pissing off alot of very respected spl guys with this one theory of a fantastic box design unproven in a vehicle... so to help you out a bit i would say to lay off the spl scene until you have a world record or two under your belt with your box design.................THEN challange the people who really are the best... not to say you are not right... just in reality paper means nothing, spl results are king.. and so far you have proven to us that you dont have one single spl score of value to us... now please iam not trying to belittle your knowledge of spl.. but no one likes to be told they are wrong by a suit with no track record....
let me see if i can put it another way for you.... i have played goal at the semi pro level.. now iam 42 and have been out for a long time but still play in a very competitive league full of x nhl/whl/ajhl/ europe players... now if some 40 yr old who has been coaching hockey all his life but never played befor comes and tells me my style is all wrong and he introduces me to a new unique, untried and unproven style of play... well guess what iam going to tell him... now his system may be the best once exposed and proven but until then i have to stick with what makes me good.... so your theory and ideas may be write and we are all 10 yrs behind you, but until you can prove it to us time and time again.... well its just hearsay and will fall on deaf ears..
my advise is to make this box throw it into a car and beat your demons at there own game.. just my two sense....

 

Gents I am at a loss -

I have never made any such claims anywhere in this thread - please read what I have written and not what others have miss-quoted me as saying.

I have made my position on this very clear.

Someone asked me if I knew other alignments that might be of benefit and said yes. I said that a Danley Tapped Horn Alignment might be worth consideration. Then I was asked for some more information, I directed people to some links for their review then I was asked for more data and on and on it when - but I never said that they would be or are the loudest alignment for in vehicle application - I have simply said that they are worth consideration. And they are.

So, if you have taken the time to actually read every post relating the DTH's you will find that I am telling the truth.

OKAY - so let's move on.

But with regards to the E.E. thing a College level technician education is not the same as a University level education, which later develops into a professional designation as an Electrical Engineer.

Also, to say that theory can't explain the probable outcomes within SPL systems is simply untrue. If you personally have found it to be of little value – that’s a problem within your own understanding. All of the products that make your SPL system possible have been develop by E.E.’s or the alike and they applied much theory to get you to where you are today. Honestly, there is no legitimate counter argument to this; however, I am sure that some of you will simply make one up just to argue!