Help with box tuning


K9Candyman

CarAudio.com Newbie
May 19, 2021
18
2
ITALY
Hello from italy dear car audio friends. Woul you kindly help me with a good box tuning for my 2 pride sv3 15's? I have a soundigital 8k to push them, maybe i upgrade that amplifier later soon, but i need help with the enclosure tuning. The problem is that i need a certain type of bass, that kind of bass that you can feel on you non only inside the car, but outside open door 2-3 meter away from the car. One of my friend have a B2 with 2k and he is able to vibrate your clotes 5 meter away but he won't tell me the tuning. Please help
 

K9Candyman

CarAudio.com Newbie
May 19, 2021
18
2
ITALY
  • Thread Starter Thread Starter
  • #3
Here It is from the manual. The bass i'm searcing for Is the one you can feel on y
IMG_20210415_193532.jpg
our body away from the car. Thank you in advance and sorry for my bad english
 

K9Candyman

CarAudio.com Newbie
May 19, 2021
18
2
ITALY
  • Thread Starter Thread Starter
  • #5
Those look like extremely serious subwoofers. The t/s labels are in English 😅

You need a serious design for those. If that manual is honest, those look like some monsters.
The thing that i want to know is generally talking what is the best tuning point for the kind of bass i'm looking for? Some people told me that the bass that you feel the most 5 meter from the car is 32 hertz, can you agree? Btw mine are 2 15's
 

shredder2

CarAudio.com Elite VIP
Nov 19, 2017
3,083
618
Az
Those look like extremely serious subwoofers. The t/s labels are in English 😅

You need a serious design for those. If that manual is honest, those look like some monsters.
Local guy did 154 and change tuned low with one of those 18's. Gobs of power too. Beast subs.
 

hispls

CarAudio.com Veteran
5,000+ posts
10+ year member
Sep 10, 2009
12,116
778
Central Maine
The thing that i want to know is generally talking what is the best tuning point for the kind of bass i'm looking for? Some people told me that the bass that you feel the most 5 meter from the car is 32 hertz, can you agree?
I hope you have enough alternator + battery to feed that amp. I also hope you have the ability to build a very large and solid box for those subs. What vehicle is this going to be in and precisely how much space do you have?

I would suggest tuning at or around whatever the company that sells those subs recommends and it should be plenty loud if you can feed that amp properly and build a good sturdy box.
 

K9Candyman

CarAudio.com Newbie
May 19, 2021
18
2
ITALY
  • Thread Starter Thread Starter
  • #8
I hope you have enough alternator + battery to feed that amp. I also hope you have the ability to build a very large and solid box for those subs. What vehicle is this going to be in and precisely how much space do you have?

I would suggest tuning at or around whatever the company that sells those subs recommends and it should be plenty loud if you can feed that amp properly and build a good sturdy box.
Thank you for your answer. I have at the moment 4 agm batteries 100ah each one, and a 120a alternator that i will upgrade to a 320 soon. My car is a tiny Fiat punto van, that allow me to build a reasonable large box. 350 liter (12 cubic feet) using 4 centimeter (1,5 inch) plywood. Pride in the manual says to tune at 30hz, would that allow me to feel the bass physically outside the car or for that kind of bass is better a higher tune?
 

SlugButter

CarAudio.com Elite VIP
Nov 5, 2019
2,392
826
arizona
Those look like decent subs. I have this sub specs saved in the database of my enclosure designing software. I never got to build the box for it though. I had a friend from Kazakhstan who was going to use it, but he got deported before the build came. The box I have saved in here for him was 3.2 cubic ft, with a port tuning of 29.
 

K9Candyman

CarAudio.com Newbie
May 19, 2021
18
2
ITALY
  • Thread Starter Thread Starter
  • #10
Those look like decent subs. I have this sub specs saved in the database of my enclosure designing software. I never got to build the box for it though. I had a friend from Kazakhstan who was going to use it, but he got deported before the build came. The box I have saved in here for him was 3.2 cubic ft, with a port tuning of 29.
Would you kindly share that with me?
 

hispls

CarAudio.com Veteran
5,000+ posts
10+ year member
Sep 10, 2009
12,116
778
Central Maine
Thank you for your answer. I have at the moment 4 agm batteries 100ah each one, and a 120a alternator that i will upgrade to a 320 soon. My car is a tiny Fiat punto van, that allow me to build a reasonable large box. 350 liter (12 cubic feet) using 4 centimeter (1,5 inch) plywood. Pride in the manual says to tune at 30hz, would that allow me to feel the bass physically outside the car or for that kind of bass is better a higher tune?
I would not tune that low if you intend to play actual normal speed music.

That said, use every bit of that 12 cubic foot gross space you have and use 300 square inches of port area. If your box is built solid you should not have any issues being loud everywhere.
 

K9Candyman

CarAudio.com Newbie
May 19, 2021
18
2
ITALY
  • Thread Starter Thread Starter
  • #13
I would not tune that low if you intend to play actual normal speed music.

That said, use every bit of that 12 cubic foot gross space you have and use 300 square inches of port area. If your box is built solid you should not have any issues being loud everywhere.
300 square inch of port? Holy! That huge?
1.jpg
 

hispls

CarAudio.com Veteran
5,000+ posts
10+ year member
Sep 10, 2009
12,116
778
Central Maine
300 square inch of port? Holy! That huge?
My mistake, 150-200 for 10 cubic foot net box should do well. 300 will be impractical if you're not doing a wall build and likely not gain much over 200"

if you google "Salvati loudspeaker white paper" First link should be scholarly article explaining how more port area = more efficiency. Typical "cookie cutter" box designs use 15-20 square inches per cubic foot of internal airspace.

The "DD Box" will typically get very loud with a critically over-damped (huge motor and stiff suspension) sub.
If you feel you need lower tuning make the port longer, but I would suggest going no lower than 15 square inches per cubic foot of box volume.
 

K9Candyman

CarAudio.com Newbie
May 19, 2021
18
2
ITALY
  • Thread Starter Thread Starter
  • #15
My mistake, 150-200 for 10 cubic foot net box should do well. 300 will be impractical if you're not doing a wall build and likely not gain much over 200"

if you google "Salvati loudspeaker white paper" First link should be scholarly article explaining how more port area = more efficiency. Typical "cookie cutter" box designs use 15-20 square inches per cubic foot of internal airspace.

The "DD Box" will typically get very loud with a critically over-damped (huge motor and stiff suspension) sub.
[/URL]
If you feel you need lower tuning make the port longer, but I would suggest going no lower than 15 square inches per cubic foot of box volume.
2.jpg

Thank you very much, i appreciate your comments. So 30 is a bit low tuning for normal music, and people tell me 45 is too high because then it will not play the deep notes, so 35 can be a good solution? Remember, for me the only real bass i need is the one you can feel outside the car, not only hear, but feel too! Sorry for my english, i'm in italy
 

hispls

CarAudio.com Veteran
5,000+ posts
10+ year member
Sep 10, 2009
12,116
778
Central Maine
So 30 is a bit low tuning for normal music, and people tell me 45 is too high because then it will not play the deep notes, so 35 can be a good solution? Remember, for me the only real bass i need is the one you can feel outside the car, not only hear, but feel too! Sorry for my english, i'm in italy
Most actual music played on musical instruments will contain little to no material below 40hz. Even most EDM music I've played will not dip below 35hz. If you do not plan to listen to "bass mechanic" type music or slow speed recordings or similar 35-36 should be plenty low to handle pretty much anything that would play on the radio.

I would agree that 45hz tuning is going to be a bit high for a good range of music. That and higher tuning is typically reserved for SPL burp applications where you're aiming to just play very loud around your car's resonant frequency which usually is 50hz or higher for most common vehicles.

Anyway, you will notice that some horn/string instruments will play 30hz and lower but if your goal was to reproduce a concert hall sound, you could still get loud enough to be realistic even with higher tuning as the port will control the cone a good bit below tuning frequency.

29201



I believe if you build the box in your picture, make sure the seems are airtight, and everything is solid (add a support/brace between the two woofers to the back panel) you will not have a problem playing just about any music very loud.

You may even find that box is a little too large and you begin to approach mechanical limits of your woofers with so much power on tap. If you do, you can always just add 45 degree pieces into the corners to remove some box volume and add layers to the inside of your port to shrink that as needed to keep your tuning ratio.

I can assure you, your English is better than my Italian!
 
  • Like
Reactions: K9Candyman

Buck

[email protected]
Pro Seller
5,000+ posts
10+ year member
May 19, 2008
26,000
450
Orlando Area, FL
I would not tune that low if you intend to play actual normal speed music.

That said, use every bit of that 12 cubic foot gross space you have and use 300 square inches of port area. If your box is built solid you should not have any issues being loud everywhere.
Not really quite true. I think your point is valid, but there's definitely people who tune in the high 20's for daily, including myself. Boxes tuned to the high 20's, if done for music, typically reach up to 70 hz or so, if it's a good woofer and design all together, good system. Some of the most hardcore SQ guys tune in the mid 20's, and win comps like that, so there's something to that.
 

hispls

CarAudio.com Veteran
5,000+ posts
10+ year member
Sep 10, 2009
12,116
778
Central Maine
I bet you still can't name 5 songs that aren't re-mixed or slowed down where one would need to play below 30hz.

That said, I did just model OP's subs and they should play flat-ish tuned in the mid to high 20s but there's a lot of output to be gained in the 40-50hz range (where actual music happens) for tuning up into the mid 30s AND port tuned to 25hz with adequate area to hang with his potential displacement is going to be enormous.

Really it looks like they're designed to shoehorn into a very small box and just throw a shitload of power into them to try to play flat-ish. I'd still use a large box and take a peak where most of my music will want for the sake of efficiency.

I would still tune those no lower than 32hz for myself and keep them in 5-6 cubic feet per sub.
 

K9Candyman

CarAudio.com Newbie
May 19, 2021
18
2
ITALY
  • Thread Starter Thread Starter
  • #20
So.. I'd ended choosing 35hz as my tune. so i don't sacrifice too much my rebassed/slowed an it can be decent with normal music too. Hopefully..
 
  • Like
Reactions: Buck

Create an account or login to comment

You must be a member in order to leave a comment

Create account

Create an account on our community. It's easy!

Log in

Already have an account? Log in here.


Users Who Are Viewing This Thread (Users: 0, Guests: 1)



Newest threads

Most posts - Past 30 days

Latest classifieds