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» Termpro Audio Forum » Our Archives » dBDRA 2004 Rules Discussion (Archive) » Reason for 2 10" subs is A class

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Author Topic: Reason for 2 10" subs is A class
Patrick Wilson
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What's the reason for having 2 10" in Street A? Shouldn't it be 1-12",1-10",3-8", in acordance with the other classes B and C?

The class will be simply a 2- 10" class rather than 2- 12" in B. and 10"s are not a whole lot smaller than 12". The price differece for subs between A and B will be nearly nothing.

There is no reason to have a single 12" in this class, because of cone area, and power handling.

only one 10" should be allowed in street A

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Broken Silence - Johnny
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The reason that wayne wants this class, 1 12", 2 10", or 3 8" is because there needs to be a class for people who don't have a whole lot. 2 10's have a cone area advantage over a single 12, but the 12 is getting more power per square inch and thus is moving farther. Not to mention, there aren't that many people with 1 10" sub. However, there are a lot of people who have 1 12" sub, or 2 10" subs. (If you think I am flaming you now I give up)

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Patrick Wilson
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There are plenty of people with 1-10" sub. I know as many with a single 10" sub as any other one arangement. For example, my first two systems used a single 10" sub

The problem I see is that the class will be a 2-10" dominant class, which will have a cost nearly double that of a 1-12" dominant class. A class that only allows one 12" or 10" is more for "people that don't have a whole lot".

In terms of Power handling, cone area, and cost:
2-10" subs are closer to 2-12" or 3-10" and should be in Street B, compared to 2-10" vs 1-12" in Street A.

A 2-10" A class is going to be very similar to the 2-12" B class.

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ShockingCanada
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no...I totally agree with 2 10s...tons of street beaters have 2 10s...this is the perfect class

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Team Urban ArtFX
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i know of some people that can't fit 2 subs in a car. they can only fit one 12. so this is a good class. alot of people i know are part of the race scene and they don't want 2 speakers to weight them down

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dBSteve
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Stats page anyone? [Razz]

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jliehr
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No, I do not have one...

quote:
Originally posted by dBSteve:
Stats page anyone? [Razz]



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GH0ST
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THe three most popular systems the two local shops install consist of 1 12, 2 10s or 1 15...the current draft of the rules fitts this perfect....

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Broken Silence - Johnny
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quote:
Originally posted by DD Cherokee:
There are plenty of people with 1-10" sub. I know as many with a single 10" sub as any other one arangement. For example, my first two systems used a single 10" sub

The problem I see is that the class will be a 2-10" dominant class, which will have a cost nearly double that of a 1-12" dominant class. A class that only allows one 12" or 10" is more for "people that don't have a whole lot".

In terms of Power handling, cone area, and cost:
2-10" subs are closer to 2-12" or 3-10" and should be in Street B, compared to 2-10" vs 1-12" in Street A.

A 2-10" A class is going to be very similar to the 2-12" B class.

If you are buying 2 subs, it will not cost that much more, because they don't have to handle as much power.

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jliehr
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If you only have 1 10 chances are you won't care about dB Drag Racing. And if you do, nothing says you have to use 2, you're just gonna get your butt handed to you.

quote:
Originally posted by DD Cherokee:
There are plenty of people with 1-10" sub. I know as many with a single 10" sub as any other one arangement. For example, my first two systems used a single 10" sub

The problem I see is that the class will be a 2-10" dominant class, which will have a cost nearly double that of a 1-12" dominant class. A class that only allows one 12" or 10" is more for "people that don't have a whole lot".

In terms of Power handling, cone area, and cost:
2-10" subs are closer to 2-12" or 3-10" and should be in Street B, compared to 2-10" vs 1-12" in Street A.

A 2-10" A class is going to be very similar to the 2-12" B class.



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*Krisa*
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quote:
Originally posted by dBSteve:
Stats page anyone? [Razz]

that was my fault. LOL. Haven't gotten renewal stuff squared away yet. [Smile] Packet probably will get here tomorrow. [Smile]

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Rock99
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Street a is set up great in my opinion. I love it.

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TalNLnky
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not only will a single 12 have more power per sq inch than dual 12's... but 12's are generally more efficient than 10's of the same design.

i think the possibility of being competitive with the 10's or the 12 is very good... even Three 8's might stand a chance... I can see 3x8L7 doing very well in a proper install.

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GH0ST
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quote:
Originally posted by TalNLnky:
not only will a single 12 have more power per sq inch than dual 12's... but 12's are generally more efficient than 10's of the same design.

i think the possibility of being competitive with the 10's or the 12 is very good... even Three 8's might stand a chance... I can see 3x8L7 doing very well in a proper install.

Take a box of a given size and use a box program to see the difference between 1-12,2-10s and 3-8s........in winpro it is less than 1db at the same power and tuning....

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TalNLnky
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quote:
Originally posted by Ghost man:
quote:
Originally posted by TalNLnky:
not only will a single 12 have more power per sq inch than dual 12's... but 12's are generally more efficient than 10's of the same design.

i think the possibility of being competitive with the 10's or the 12 is very good... even Three 8's might stand a chance... I can see 3x8L7 doing very well in a proper install.

Take a box of a given size and use a box program to see the difference between 1-12,2-10s and 3-8s........in winpro it is less than 1db at the same power and tuning....
a given box won't nessisaryly(sp?) be the optimal box in terms of SPL for the 12, 2x10's, and 3x8's, even if they do use the same motor, suspension, and cone.

get my drift? the biggest box possible isn't always the best box.

So to say that all 3 setups would meter the same is just a guess. And we all know that box programs are just simulations, very limited ones at that. They are good for making boxes with a certain frequency response, but are not accurate when dealing with spl. TOOO many variables come into play, even when in the same exact install.

EDIT: also... i think you kinda missed the whole point of my post, I think dual 10's & 12's are pretty much on a level field. with 8's behind due to excursion limitations, THO 8's could hold ther own in a proper install.

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Patrick Wilson
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Thanks guys for bringing some insight to why 2 10" are allowed.

On my mind was 300wrms 12" Pyramid system for $100.

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GH0ST
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quote:
Originally posted by TalNLnky:
quote:
Originally posted by Ghost man:
quote:
Originally posted by TalNLnky:
not only will a single 12 have more power per sq inch than dual 12's... but 12's are generally more efficient than 10's of the same design.

i think the possibility of being competitive with the 10's or the 12 is very good... even Three 8's might stand a chance... I can see 3x8L7 doing very well in a proper install.

Take a box of a given size and use a box program to see the difference between 1-12,2-10s and 3-8s........in winpro it is less than 1db at the same power and tuning....
a given box won't nessisaryly(sp?) be the optimal box in terms of SPL for the 12, 2x10's, and 3x8's, even if they do use the same motor, suspension, and cone.

get my drift? the biggest box possible isn't always the best box.

So to say that all 3 setups would meter the same is just a guess. And we all know that box programs are just simulations, very limited ones at that. They are good for making boxes with a certain frequency response, but are not accurate when dealing with spl. TOOO many variables come into play, even when in the same exact install.

EDIT: also... i think you kinda missed the whole point of my post, I think dual 10's & 12's are pretty much on a level field. with 8's behind due to excursion limitations, THO 8's could hold ther own in a proper install.

i know where you are coming from..i stated they would be very close...not the same...i know in my van with a 4cuft box 2 10L7s are .4db louder than one 12L7 was off of a D2.....i know that box is right for the 12 and small for the 10s but you get my point.....most people in street build the box as big as they can....it may not be the best way to spl but it is one of the more common with the less expirianced Draggers....i'm guilty of that myself...

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Shedluv
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I know in the same box, just switching woofers (with a plate adapter), my 10s were about 0.5 dB behind my 12s. 6 cubes, tuned high. In the bandpass box, the 10s were actually LOUDER than the 12s with the same power.

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quote:
Originally posted by ShockingCanada:
no...I totally agree with 2 10s...tons of street beaters have 2 10s...this is the perfect class

no $hit..... [Razz]

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quote:
Originally posted by DD Cherokee:
What's the reason for having 2 10" in Street A? Shouldn't it be 1-12",1-10",3-8", in acordance with the other classes B and C?

The class will be simply a 2- 10" class rather than 2- 12" in B. and 10"s are not a whole lot smaller than 12". The price differece for subs between A and B will be nearly nothing.

There is no reason to have a single 12" in this class, because of cone area, and power handling.

only one 10" should be allowed in street A

Dude, just go out and get yourself another 10" then!

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dBSteve
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I believe the question has been answered.

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dBSteve
Get Loud Productions LLC

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