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  #73  
Old 04-06-2010, 04:30 PM
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Re: let me see your systems!!!

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Originally Posted by Matt McKenzie View Post
Thanks, and you aren't joking about the cost...but it is worth it in the end!!!!
But when you have a vehicle that is unique and different from others, thats all that matters
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  #74  
Old 04-06-2010, 07:23 PM
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Re: let me see your systems!!!

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Originally Posted by KlutcH View Post
But when you have a vehicle that is unique and different from others, thats all that matters
you are 100% correct
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  #75  
Old 04-06-2010, 07:25 PM
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Re: let me see your systems!!!

and i wanted to ask everyone would two digital design 12 or 10s be worth the money? they are like 230 a piece. or should i just get kicker or rockford? and save a shight load of money?
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  #76  
Old 04-06-2010, 08:08 PM
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Re: let me see your systems!!!

DD will by far put any kicker or rockford sub to shame......make sure u port it though, you plan on going sealed or ported?
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  #77  
Old 04-06-2010, 08:18 PM
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Re: let me see your systems!!!

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Originally Posted by JRsmoothee View Post
DD will by far put any kicker or rockford sub to shame......make sure u port it though, you plan on going sealed or ported?
they should they are 3x times the money. And imho they are not worth it at all.
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  #78  
Old 04-06-2010, 08:35 PM
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Re: let me see your systems!!!

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Originally Posted by billabongdudecjr View Post
and i wanted to ask everyone would two digital design 12 or 10s be worth the money? they are like 230 a piece. or should i just get kicker or rockford? and save a shight load of money?
What are your goals?

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DD will by far put any kicker or rockford sub to shame......make sure u port it though, you plan on going sealed or ported?
This is a rather ignorant statement.
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  #79  
Old 04-06-2010, 08:51 PM
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Re: let me see your systems!!!

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Originally Posted by JRsmoothee View Post
DD will by far put any kicker or rockford sub to shame......make sure u port it though, you plan on going sealed or ported?
ported to me there is no comparison with the sound quality.
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  #80  
Old 04-06-2010, 08:53 PM
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Re: let me see your systems!!!

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Originally Posted by Matt View Post
What are your goals?


This is a rather ignorant statement.
just to have a nice system.....dont plan on any compostions just want a good system...... i really would only get the DDs if i could get a good deal.

and its fine
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  #81  
Old 04-06-2010, 08:56 PM
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Re: let me see your systems!!!

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Originally Posted by billabongdudecjr View Post
ported to me there is no comparison with the sound quality.
You can't really make a blanket statement that one is better than the other. It entirely depends on the drivers in hand.

Quote:
Originally Posted by billabongdudecjr View Post
just to have a nice system.....dont plan on any compostions just want a good system...... i really would only get the DDs if i could get a good deal.

and its fine
What do you mean when you say 'nice'...?

Do you mean LOUD or something that will compliment the rest of your stereo?
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  #82  
Old 04-06-2010, 09:37 PM
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Re: let me see your systems!!!

yes loud and sound quality.
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  #83  
Old 04-07-2010, 01:21 AM
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Re: let me see your systems!!!

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Originally Posted by billabongdudecjr View Post
yes loud and sound quality.
I found that compromising sound quality and loud dont really work hand in hand.

I went for better sound quality, that is why I went with a non ported box. I used to have a ported box, and it was LOUD, but it sounded like SHIT over time.

Ported is greater then non ported and vise versa is rather NOT TRUE, it all depends on the driver and what they want in a stereo, so yes Matt is correct, and I expect he is, cause well he's the shit. Dont ever let someone tell you one is better than the other.
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  #84  
Old 04-07-2010, 07:59 AM
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Re: let me see your systems!!!

Quote:
Originally Posted by billabongdudecjr View Post
yes loud and sound quality.
Gotcha. There are many ways to accomplish this. I'd personally get a single 15" driver, just to keep enclosure space down. Either way, it's going to be a large enclosure, but probably not as big as one for two 12" drivers. (guesstimating)

Quote:
Originally Posted by KlutcH View Post
I found that compromising sound quality and loud dont really work hand in hand.
Yes, you can get both. There are guys with dual 15's in big ass ported enclosures with excellent sounding stereos (like sound quality competition excellent).

Quote:
Originally Posted by KlutcH View Post
I went for better sound quality, that is why I went with a non ported box. I used to have a ported box, and it was LOUD, but it sounded like SHIT over time.
Quote:
Originally Posted by KlutcH View Post
Ported is greater then non ported and vise versa is rather NOT TRUE,
^^ I think you just contradicted yourself, lol

Quote:
Originally Posted by KlutcH View Post
it all depends on the driver and what they want in a stereo, so yes Matt is correct, and I expect he is, cause well he's the shit. Dont ever let someone tell you one is better than the other.
When I say 'driver' I am talking about the speaker. It's just another term for speaker.

That doesn't make what you said wrong though... as long as the person is happy with their stereo, then there is no right or wrong.


As far as ported vs. sealed;


Read this,

http://www.diymobileaudio.com/forum/...myth-fact.html

and this,

http://www.diymobileaudio.com/forum/...-modeling.html


Now... look at these graphs I modeled below.









Green line = ideal ported
Yellow line = ideal sealed
Pink line = ported (what most people build when they are looking for loud)


The second graph shows group delay, I'll get into that in a moment.


So, lets compare ported vs sealed. Looking at the first graph it's pretty obvious that the ported alignment will pay lower than the sealed alignment. Those lower frequencies will be louder with the ported enclosure compared to the sealed. This is why people coin the ported enclosure as being louder. It is, but only at the lower frequencies. You can see it is just as loud throughout much of the lower frequencies.

Now, that low-end extension you get when going ported comes at a cost; group delay! This can be a real bitch to overcome for some cars, others, not so bad. The easiest way to explain it is that those lower frequencies that coordinate with the rise in both the green and pink line are going to essentially be delayed. This can sometimes be combated with a simple phase swap (reverse the positive and negative wires), but other times it takes a bit more processing to smooth out.

The other, pink line, is what a lot of pre-fabricated (Kicker, Alpine, Rockford, etc) enclosures model at. Very peaky = really loud at essentially one frequency. In my opinion, it sounds like shit, but others that just like a loud stereo and don't necessarily care about a smooth/flat response prefer a response like this.

To conclude: sealed enclosures are much more forgiving and are easier to implement. Ported enclosures give you the opportunity to shape the frequency response of your sub woofer. Of course, this gives you the opportunity for it to play lower (louder) - better sound quality (this is the basis of that argument), but group delay can cause issues, not always, but it can.


That's about all I feel like typing right now, but if you have any other questions or need further clarification, I can try to help answer some questions.
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