145db Examples

[robbythedude]

Hey guys,

I went and spectated my first competition last weekend! I loved it, but it has changed me. I want to compete now, and I keep telling myself I have a year to get ready... lmfao

Anyways, I have set a personal goal of hitting 145db. I have been trying to find examples of others out there that have hit 145db+ and having some problems.

I was wondering if you guys could share some links to videos, build logs, blogs, pictures galleries, etc. of cars with systems that perform near 145db? I want to get a feel for what I should be looking forward to, and hopefully some design ideas too.

Thank you

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[NASTY08IMPALA 5,000+ posts]

Hey guys,
I went and spectated my first competition last weekend! I loved it, but it has changed me. I want to compete now, and I keep telling myself I have a year to get ready... lmfao

Anyways, I have set a personal goal of hitting 145db. I have been trying to find examples of others out there that have hit 145db+ and having some problems.

I was wondering if you guys could share some links to videos, build logs, blogs, pictures galleries, etc. of cars with systems that perform near 145db? I want to get a feel for what I should be looking forward to, and hopefully some design ideas too.

Thank you

My first 145 came from 2 sa12s on 2saz1000s in a 08impala subs/port back

 

[robbythedude]

My first 145 came from 2 sa12s on 2saz1000s in a 08impala subs/port back

And I have much to learn too. Two 12"s @ 2000rms can produce 145db? There were people at this competition struggling to break 140db and had one/two 15"s or two 12"s.

I understand that box designs play a huge part in reaching high db, but I don't even know where to start to understand that stuff. That is why I am asking for build logs and things lmao //content.invisioncic.com/y282845/emoticons/tongue.gif.6130eb82179565f6db8d26d6001dcd24.gif

 

[hispls 5,000+ posts]

In a small SUV that's an easy goal and you could get there for under 1000$ in equipment (assuming you can build your own box). And you should be able to get there on stock electrical.

Owning a meter will make things infinitely easier for you so if you want to compete even somewhat seriously, buy one. The pressure sensor from Makeitlouder.com is as accurate as your DMM and a good value for testing purposes.

Next thing you'll need to figure out is what the classes are in your local competition scene and plan your equipment and build around those restrictions. It's no fun you build your box an inch too tall and be up against guys that are doing 160's out of a wall.

 

[NASTY08IMPALA 5,000+ posts]

And I have much to learn too. Two 12"s @ 2000rms can produce 145db? There were people at this competition struggling to break 140db and had one/two 15"s or two 12"s.
I understand that box designs play a huge part in reaching high db, but I don't even know where to start to understand that stuff. That is why I am asking for build logs and things lmao //content.invisioncic.com/y282845/emoticons/tongue.gif.6130eb82179565f6db8d26d6001dcd24.gif

Yea it takes alot of tinkering to figure out what ur ride likes..ive seen guys with suvs struggle to do 145 with 4 15s..its all in the setup

 

[psych0ticnemes1 5,000+ posts]

I did it with a single Type R 15" at 1 ohm on a Sundown 1500. Sub up, port to the driver's side in a vibe. You just need to figure out what frequency is loudest, which direction to fire your sub and port, what to do with your car itself to gain like putting your visors and seats down, one seat up, one seat back, etc.

 

[robbythedude]

In a small SUV that's an easy goal and you could get there for under 1000$ in equipment (assuming you can build your own box). And you should be able to get there on stock electrical.
Owning a meter will make things infinitely easier for you so if you want to compete even somewhat seriously, buy one. The pressure sensor from Makeitlouder.com is as accurate as your DMM and a good value for testing purposes.

Next thing you'll need to figure out is what the classes are in your local competition scene and plan your equipment and build around those restrictions. It's no fun you build your box an inch too tall and be up against guys that are doing 160's out of a wall.

Ohmygod those meters are allot more expensive than I thought they were.... If a $1000 budget can truly deliver, then I can pickup the meter haha

I was planning on this setup to reach 145, 2x SQ HDC4 15" w/ 2x Q2200.1. More than $1000, so you gotta explain!! //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif I feel this is over kill lol And would not run on stock electric either.... So you really gotta explain what the setup your mind is thinking.

The Shake the Lake event was sponsored by MECA here: General SPL Rules

Results of this year here: Events

Doesn't look like they base it off of box size, but # of fuses. That seems less regulated than box sizes...

 

[csu87 10+ year member]

2 10s I built from old school audiobahn motors (avatar pic) on a ppi s2k from the trunk of a bmw. Just under 145 at 144.5-.8.

Then same subs on a popcorn sounds 6k at .25ohm getting 147/148

 

[csu87 10+ year member]

Ohmygod those meters are allot more expensive than I thought they were.... If a $1000 budget can truly deliver, then I can pickup the meter haha
I was planning on this setup to reach 145, 2x SQ HDC4 15" w/ 2x Q2200.1. More than $1000, so you gotta explain!! //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif I feel this is over kill lol And would not run on stock electric either.... So you really gotta explain what the setup your mind is thinking.

The Shake the Lake event was sponsored by MECA here: General SPL Rules

Results of this year here: Events

Doesn't look like they base it off of box size, but # of fuses. That seems less regulated than box sizes...

Look at the classes though. They have restrictions based on the class you are in.

And with that equipment, you should be looking at 150+ if done right

 

[LosIsATool 5,000+ posts]

MECA sticks me in mod 4... They do 60s in mod 4.

 

---------- Post added at 10:11 AM ---------- Previous post was at 10:10 AM ----------

 

What car OP? That will play the biggest role. Some just get louder than others.

 

[robbythedude]

MECA sticks me in mod 4... They do 60s in mod 4. 

---------- Post added at 10:11 AM ---------- Previous post was at 10:10 AM ----------

 

What car OP? That will play the biggest role. Some just get louder than others.

Look at the classes though. They have restrictions based on the class you are in.

So let me get this straight. If I had one amp with a single fused power wire running to it, I would be considered as having '1 fuse'?

I will be using a Kia Soul Base 2014, a hatchback.

 

[csu87 10+ year member]

Yeah if you don't build for a specific class, you can get screwed in MECA.

I was in street 2 iirc for my Jimmy. Next highest score at the comps I went to was about 6db behind.

 

[LosIsATool 5,000+ posts]

I didn't know taking my back seat out would screw me. I only competed once a year so it didn't matter. Still would pull a top 3.

 

[LosIsATool 5,000+ posts]

Normally hatch backs get loud. The flat ones help a lot. Bad thing is it's harder to get the cone area SUVs can get. You could do a single big boy 15 with a few thousands watts and get a 45 with some testing.

 

[hispls 5,000+ posts]

Ohmygod those meters are allot more expensive than I thought they were.... If a $1000 budget can truly deliver, then I can pickup the meter haha
I was planning on this setup to reach 145, 2x SQ HDC4 15" w/ 2x Q2200.1. More than $1000, so you gotta explain!! //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif I feel this is over kill lol And would not run on stock electric either.... So you really gotta explain what the setup your mind is thinking.

The Shake the Lake event was sponsored by MECA here: General SPL Rules

Results of this year here: Events

Doesn't look like they base it off of box size, but # of fuses. That seems less regulated than box sizes...

A single high output 15" will get you 145 on that power assuming you build a half decent box and own a meter to do some tweaking. 4" coil is total overkill for 2000W to a pair of subs as well.

My numbers are assuming you're buying used and can build your own box of course, and figure in enough budget for a box, cheap head unit and wiring kit.

Good sub 250-350$

head unit 100$

Wiring kit 100$

1000-1500W amp 250-300$

Box 80-150$ (depending on materials and finish).

Single 15" in a BIG box will get you there no problem at power level that you can run on your stock electrical. If you can run 2KW and want to invest in the upgraded electrical, set your sights to 147.

Almost everyone over-estimates how much box volume they have to work with. It is very important, particularly on low power, to have adequate box volume, large port area, and enough room to move the box around in the cargo area no optimize output. Often times you can find a full 2dB just by moving the box around in the cargo area to find the best position for the meter!