Peaking Frequency VS Term Lab Score

[206xtreme]

Hello guys.

I just would like to gather opinions on this subject. Something like a poll to anyone who would like to answer.

Of course, a great parameter is the car size, so let's keep this the same on all case studies.

In your opinions, what is a good peaking frequency with a good term lab score for (example) 1 15" box trunk, 2 15" box trunk, 4 15" wall, 2 18" 4 18" wall etc etc etc?

[audiofanaticz]

You cant really answer this..

A good peaking frequency with a good termlab score is going to mean something higher in the 50-80hz range.

Your going to want to find the resonate frequency of your vehicle long before picking a peak frequency out of a magical hat.

So to say you want to peak at 40hz but your vehicles resonate frequency is 53hz. Sure your car will play 40hz but chances are if the box is designed and built around your vehicles resonate frequency of 53hz it will be louder than if it was built to play 40hz. Im not saying that you cant get 40hz just as loud, however it will not be as efficient to do as it would 53hz.

Now of coarse other things will come in to play.

Are you putting 1 15 in the trunk of a car with no rear folding seats, or you putting that 1 15 in the trunk of a honda crx.
You mention keeping the car size the same but yet you didnt say the car type. How do we know if this car can fit 4 18s walled in a proper built wall with proper port area?

Are your goals to compete in a specific class because if you want to compete in a no wall class then having a walled vehicle does not do you much good.

Are you keeping the power the same are you putting a 1000 wrms on the single 15 in the trunk and putting that same 1000 wrms amp on the 4 18s in a wall?
Is the single 15 going to be a nicer woofer than the 2 15s, or better yet are you going to have even 4 cheaper 18s in a wall?

[Kyblack76]

[206xtreme]

You cant really answer this..

A good peaking frequency with a good termlab score is going to mean something higher in the 50-80hz range.

Your going to want to find the resonate frequency of your vehicle long before picking a peak frequency out of a magical hat.

So to say you want to peak at 40hz but your vehicles resonate frequency is 53hz. Sure your car will play 40hz but chances are if the box is designed and built around your vehicles resonate frequency of 53hz it will be louder than if it was built to play 40hz. Im not saying that you cant get 40hz just as loud, however it will not be as efficient to do as it would 53hz.

Now of coarse other things will come in to play.

Are you putting 1 15 in the trunk of a car with no rear folding seats, or you putting that 1 15 in the trunk of a honda crx.

You mention keeping the car size the same but yet you didnt say the car type. How do we know if this car can fit 4 18s walled in a proper built wall with proper port area?

Are your goals to compete in a specific class because if you want to compete in a no wall class then having a walled vehicle does not do you much good.

Are you keeping the power the same are you putting a 1000 wrms on the single 15 in the trunk and putting that same 1000 wrms amp on the 4 18s in a wall?

Is the single 15 going to be a nicer woofer than the 2 15s, or better yet are you going to have even 4 cheaper 18s in a wall?

Don't just stick to the exceptions. Stick to the rule. What would it be best for you.

For example, IMO,

a 4 15" wall can't hit less than 158dB!

a 2 18" wall can't hit less than 157dB!

a super street no wall car can't be less than 153dB!

a 2 15" trunk is unaccceptable if less than 150dB!

a 1 18" trunk should be arount 148dB or more!

etc etc

About peaking frequency. IMO again, a car should be hitting the peak sealed on 48 to 54 Hz.

This way, it will drop about 5-8Hz with windows open, and more than 10 with both doors open.

This way you can get most songs of the music industry.

I think I made myself more clear on what I am asking about

[diegoclass2010]

I'm not really sure what your asking. But if your building for car frequency peak you want a burp box? And not music.

Ps... 153 from the trunk are big boy numbers :0

[tboorn]

You cant really answer this..

A good peaking frequency with a good termlab score is going to mean something higher in the 50-80hz range.

Your going to want to find the resonate frequency of your vehicle long before picking a peak frequency out of a magical hat.

So to say you want to peak at 40hz but your vehicles resonate frequency is 53hz. Sure your car will play 40hz but chances are if the box is designed and built around your vehicles resonate frequency of 53hz it will be louder than if it was built to play 40hz. Im not saying that you cant get 40hz just as loud, however it will not be as efficient to do as it would 53hz.

Now of coarse other things will come in to play.

Are you putting 1 15 in the trunk of a car with no rear folding seats, or you putting that 1 15 in the trunk of a honda crx.

You mention keeping the car size the same but yet you didnt say the car type. How do we know if this car can fit 4 18s walled in a proper built wall with proper port area?

Are your goals to compete in a specific class because if you want to compete in a no wall class then having a walled vehicle does not do you much good.

Are you keeping the power the same are you putting a 1000 wrms on the single 15 in the trunk and putting that same 1000 wrms amp on the 4 18s in a wall?

Is the single 15 going to be a nicer woofer than the 2 15s, or better yet are you going to have even 4 cheaper 18s in a wall?

Don't just stick to the exceptions. Stick to the rule. What would it be best for you.

For example, IMO,

a 4 15" wall can't hit less than 158dB!

a 2 18" wall can't hit less than 157dB!

a super street no wall car can't be less than 153dB!

a 2 15" trunk is unaccceptable if less than 150dB!

a 1 18" trunk should be arount 148dB or more!

etc etc

About peaking frequency. IMO again, a car should be hitting the peak sealed on 48 to 54 Hz.

This way, it will drop about 5-8Hz with windows open, and more than 10 with both doors open.

This way you can get most songs of the music industry.

I think I made myself more clear on what I am asking about

it seems like most of your assumptions are purely based on here say, and not with factual proof. There is no such thing as "generic" numbers you should expect from any one type of setup. and there definitely is no "generic" peak frequency you should peak at, yes it may be that a lot of the people out there peak around the same hz, but it isnt just because that is some magical frequency in which amplitude, and reproduced sound, is any different than any other type of wave, its because that is where mechanically, along with thermally, along with dozens of other factors, create the best reproduction and formation of said sound waves. If you think you can just decide on some magical number that will change because your doors open, or its sealed up, then your in for a world of disappointment because every box/sub/power setup needs to be directly tuned and refined to not only your liking, but to the best output in the vehicle.

[Massivespl]

You cant really answer this..

A good peaking frequency with a good termlab score is going to mean something higher in the 50-80hz range.

Your going to want to find the resonate frequency of your vehicle long before picking a peak frequency out of a magical hat.

So to say you want to peak at 40hz but your vehicles resonate frequency is 53hz. Sure your car will play 40hz but chances are if the box is designed and built around your vehicles resonate frequency of 53hz it will be louder than if it was built to play 40hz. Im not saying that you cant get 40hz just as loud, however it will not be as efficient to do as it would 53hz.

Now of coarse other things will come in to play.

Are you putting 1 15 in the trunk of a car with no rear folding seats, or you putting that 1 15 in the trunk of a honda crx.

You mention keeping the car size the same but yet you didnt say the car type. How do we know if this car can fit 4 18s walled in a proper built wall with proper port area?

Are your goals to compete in a specific class because if you want to compete in a no wall class then having a walled vehicle does not do you much good.

Are you keeping the power the same are you putting a 1000 wrms on the single 15 in the trunk and putting that same 1000 wrms amp on the 4 18s in a wall?

Is the single 15 going to be a nicer woofer than the 2 15s, or better yet are you going to have even 4 cheaper 18s in a wall?

Don't just stick to the exceptions. Stick to the rule. What would it be best for you.

For example, IMO,

a 4 15" wall can't hit less than 158dB!

a 2 18" wall can't hit less than 157dB!

a super street no wall car can't be less than 153dB!

a 2 15" trunk is unaccceptable if less than 150dB!

a 1 18" trunk should be arount 148dB or more!

etc etc

About peaking frequency. IMO again, a car should be hitting the peak sealed on 48 to 54 Hz.

This way, it will drop about 5-8Hz with windows open, and more than 10 with both doors open.

This way you can get most songs of the music industry.

I think I made myself more clear on what I am asking about

There is to many variables. Like my truck peaks at 37hz.. My buddy's Hhr peaks at 33hz... My buddy's Bonniville peaks at like 31hz... Woofers,enclosure, vehicle,power all gunna affect it. In your opinion cars sealed should peak 48-54hz wtf? Lmao maybe a crx

[mcfalcon]

I need to put my waders on.