The Great 15" Challenge

[bumpin buick 5,000+ posts]

This is making it sound like you're expecting to be compensated for your time and that I don't agree with. I remember the original thread/post that started all this and you volunteered for it. Volunteering = doing it for free not expecting to keep subs as compensation. I understand wanting to cover material cost but all labor involved should be free or else the intentions behind those involved is shady.

Your right that came off wrong, I will be communicating with all the companies and sending each and every sub back. I hope this stops all the arguements. What I said was worded poorly but I am volunteering my time and money now. A ton of it //content.invisioncic.com/y282845/emoticons/frown.gif.a3531fa0534503350665a1e957861287.gif

well what im trying to say is that lets take a simple case.
driver A has a Q of 0.7 and a BL of 10Tm with. Its a dual 2 ohm wired in parallel

driver B has a Q of 0.2 and a BL of say.... 30Tm. Its a also a dual 2 ohm wired in parallel.

burp these two drivers in a sealed box at resonance with the same amp at the same gain and driver A is louder, but its not really "louder", its just that driver A has less back EMF and its impedance is lower so it pulls more current from the amp, the amp is working much harder at the same gain....

all im saying is be careful when trying to compare two woofers with the same resistance... resistance mans nothing, nominal resistance also means nothing... impedance is important.

I understand what you mean now, I appreciate the elaboration. Hopefully you could make a trip down to Appleton and check it out. Thanks

 

[squeak9798 5,000+ posts]

They're so real world that you personally can't get any useful information out of them.

Agreed.

Providing these types of "tests" and "data" are worse than not doing anything at all because people erroneously ascribe some significance to the information provided. Why people continue to suggest and encourage such useless "comparisons" is beyond me. For some reason people think someone providing results from highly uncontrolled tests conducted in their driveway is more meaningful than tests conducted properly in controlled conditions and isolated variables because it's more "real world".

 

[newusername 10+ year member]

Kyle is in California (San Diego, I believe). I doubt he'll be going to Wisconsin.

You're thinking of John Janowitz. http://www.aespeakers.com

 

[RE_XXX]

My input on the whole impedance problem people brought up is this:

If the HDC3 has a 1.8 ohm load during testing while a HW has a 1.2... It looks to me like the HDC3 needs to be rethought in terms of what impedances are available to the customer. Or likewise.

This test to me is just what subs are top in NORMAL everyday setups. Which means about 95 percent of all these subs being sold will be put in a normal ported box for daily listening to a person who could care less about impedance rise.... let alone know what it is...

EXAMPLE!

If the results show the HW is 1 db louder than a HDC3 and it also shows a .5 ohm impedance difference in the two... THAT SHOWS THAT IN A DAILY TYPICAL INSTALLATION THE HW WILL BE LOUDER! Because it has a better approach to impedance issues which means its a better driver in that area... Or likewise...

The tests are a typical installation in a daily typical setup.

 

[bumpin buick 5,000+ posts]

This thread has gotten out of hand with members/mods shitting all over it. I am taking it somewhere else. I forgot CA wouldnt be mature enough to just take a test for what it is and stop looking so **** far into it.

Here was my original hypothesis write up:

Hypothesis:

"I feel certain subwoofers will benefit in smaller enclosures while others benefit from the larger enclosures. Overall this will give a good representation of how each subwoofer performs overall and how each can handle the power given to them. I do not see any one subwoofer dominating the field"

Because most of you havent actually read the important parts of this thread there is the purpose of the test, not to just compare one sub to another.

Well I am waiting on one of the real mods to close this thread, looks like I may be waiting a while though.

 

[RE_XXX]

This thread has gotten out of hand with members/mods shitting all over it. I am taking it somewhere else. I forgot CA wouldnt be mature enough to just take a test for what it is and stop looking so **** far into it.
Here was my original hypothesis write up:

Hypothesis:

"I feel certain subwoofers will benefit in smaller enclosures while others benefit from the larger enclosures. Overall this will give a good representation of how each subwoofer performs overall and how each can handle the power given to them. I do not see any one subwoofer dominating the field"

Because most of you havent actually read the important parts of this thread there is the purpose of the test, not to just compare one sub to another.

Well I am waiting on one of the real mods to close this thread, looks like I may be waiting a while though.

Personally.... I think people are worried that their "forum boner" subs are gonna get shit on..... This is just leading up to excuses why Sub A walked all over Sub B...

I have done my own testing in many diff apps. and power and blah blah.... and you see what I run....

 

[bumpin buick 5,000+ posts]

Personally.... I think people are worried that their "forum boner" subs are gonna get shit on..... This is just leading up to excuses why Sub A walked all over Sub B...
I have done my own testing in many diff apps. and power and blah blah.... and you see what I run....

People cant just understand what the concept of this "drop in" test is. Obviously results wont mean anything in stone but it gives people an idea of how it tests in my vehicle with my conditions. Im not promising anyone anything but some people think I have a multi million dollar experiment at works, they dont understand I am doing this off a College student budget.

 

[steveBeatz]

**** EM ALL BUMPIN, do your thing let them haters do what they do best. cry like females..NO NEED TO EVEN EXPLAIN YOURSELF TO THEM IGNORE THEM.

 

[tacovic 10+ year member]

let us know where your going to continue the thread and testing. im quite interested in the results and process and i know there are many others who are as well.

 

[ngsm13 5,000+ posts]

My input on the whole impedance problem people brought up is this:
If the HDC3 has a 1.8 ohm load during testing while a HW has a 1.2... It looks to me like the HDC3 needs to be rethought in terms of what impedances are available to the customer. Or likewise.

This test to me is just what subs are top in NORMAL everyday setups. Which means about 95 percent of all these subs being sold will be put in a normal ported box for daily listening to a person who could care less about impedance rise.... let alone know what it is...

EXAMPLE!

If the results show the HW is 1 db louder than a HDC3 and it also shows a .5 ohm impedance difference in the two... THAT SHOWS THAT IN A DAILY TYPICAL INSTALLATION THE HW WILL BE LOUDER! Because it has a better approach to impedance issues which means its a better driver in that area... Or likewise...

The tests are a typical installation in a daily typical setup.

Wow you are an idiot.

nG

 

[ngsm13 5,000+ posts]

And these idiots are prime examples...

This is really entertaining... it's not this site. It's actually people who have a brain speaking up. Sorry to burst your bubble kid...

nG

 

[Papermaker85 5,000+ posts]

for whats its worth thanks for your time and troubles.. get data and let me know..

 

[bumpin buick 5,000+ posts]

thank you will do

 

[bball09124 10+ year member]

Bumpin, you should at least take note that intelligent people are advising you against the test ( Fi Car Audio, squeak, DevilDriver,nG, Kyle Keating, John_E_Janowitz, lilmaniac2, etc.)

And the "noobs" (in comparison with the previous names mentioned) think it's a great idea.

It's sounds like a good idea to me, but when I have 5+ people more intelligent than myself advising me against something I would probably heed some of their advise.

 

[terra 5,000+ posts]

I think those people are more advising that the validity of the test will be in question, not so much whether or not he should do it.