Component or coaxial speakers to the back

[winkychevelle 10+ year member]

Is it normal to peak lower in your vehicle then the tuning of your box? If I build another box tuned to 30hz. would it peak @ 27hz.?

That varies vehicle to vehicle. Your low frequency peak could be the combination of the lowish tuned box and the cabin gain lining up at that frequency.

Only way to find the cabin gain is to subtract the frequency response of the same enclosure outside of the vehicle.

Usually you should do this first before designing the box so you can manipulate the box to work with or around the cabin gain.

If you have a low end peak in you cabin gain you could potentially tun you box higher than normal to have a more flat response higher into the frequency range.

A high end gain might require you to tune ultra low to get low bass.

Every vehicle is different and every time you add significant deadener or make a big space consumption change you should do a new test.

Adding a 10ft³ elcosure in the back of a Tahoe is going to change your cabin gain similarly, sealing off the trunk changes cabin gain, minor deadening doesn't change much but going from no deadener to fully treated is enough of a difference to warrant a new test.

You don't have to dive deep into the weeds I only recheck when I make massive changes in my system.

 

[Bobbytwonames 5,000+ posts]

That varies vehicle to vehicle. Your low frequency peak could be the combination of the lowish tuned box and the cabin gain lining up at that frequency.

Only way to find the cabin gain is to subtract the frequency response of the same enclosure outside of the vehicle.

Usually you should do this first before designing the box so you can manipulate the box to work with or around the cabin gain.

If you have a low end peak in you cabin gain you could potentially tun you box higher than normal to have a more flat response higher into the frequency range.

A high end gain might require you to tune ultra low to get low bass.

Every vehicle is different and every time you add significant deadener or make a big space consumption change you should do a new test.

Adding a 10ft³ elcosure in the back of a Tahoe is going to change your cabin gain similarly, sealing off the trunk changes cabin gain, minor deadening doesn't change much but going from no deadener to fully treated is enough of a difference to warrant a new test.

You don't have to dive deep into the weeds I only recheck when I make massive changes in my system.

I have zero sound deadener in my truck. I also think I lost a db when I had to change out my back window. Thanks for the info.

 

[winkychevelle 10+ year member]

I have zero sound deadener in my truck. I also think I lost a db when I had to change out my back window. Thanks for the info.

You would likely gain a few db by installing deadener. Especially Vibraflex on the roof just bring a heat gun and a roller for that stuff it's pretty damn stiff

 

[Bobbytwonames 5,000+ posts]

You would likely gain a few db by installing deadener. Especially Vibraflex on the roof just bring a heat gun and a roller for that stuff it's pretty damn stiff

I'm probably going to 4 - SA 10's in the same box (3.69 net) on the same power. Then a 5K whenever it is released. I'm space challenged.

 

[winkychevelle 10+ year member]

I'm probably going to 4 - SA 10's in the same box (3.69 net) on the same power. Then a 5K whenever it is released. I'm space challenged.

Personally I had my sa10v2 in 1.5cubes each but I was running 1500-1800w to a pair.

 

[Bobbytwonames 5,000+ posts]

Personally I had my sa10v2 in 1.5cubes each but I was running 1500-1800w to a pair.

I'll be running the classics on a Sundown SIA3500 until the SIA5000 is released.

 

[winkychevelle 10+ year member]

I'll be running the classics on a Sundown SIA3500 until the SIA5000 is released.

Should be plenty of power.

 

[Bobbytwonames 5,000+ posts]

Should be plenty of power.

That might get me 150. Who knows?

 

[winkychevelle 10+ year member]

That might get me 150. Who knows?

I think deadener would help you alot.

 

[Bobbytwonames 5,000+ posts]

I think deadener would help you alot.

It's my daily and don't have time to rip it apart. It also takes two people to remove my bench seat. It's cool that it's a daily work truck that isn't sound deadened. I've competed and won with my tools in the back and the pockets in my door panels full of "stuff."

 

[winkychevelle 10+ year member]

It's my daily and don't have time to rip it apart. It also takes two people to remove my bench seat. It's cool that it's a daily work truck that isn't sound deadened. I've competed and won with my tools in the back and the pockets in my door panels full of "stuff."

I've never tried to compete with my dually it's more of a sql build than an spl build. I damn sure don't run the level of mid and high everyone is running these days. 2-4 pa mids per door and super tweeters all over. Gives me a headache just thinking about it.

 

[Bobbytwonames 5,000+ posts]

I've never tried to compete with my dually it's more of a sql build than an spl build. I damn sure don't run the level of mid and high everyone is running these days. 2-4 pa mids per door and super tweeters all over. Gives me a headache just thinking about it.

Me either. 6-½'s and tweets is enough for me.