a few more builds

If Chris is really dealing with power compression... a "Thor's Hammer" box would give the woofers a little more room to breathe. I'm not experienced enough to say it would gain, but it would probably decrease the effects of impedance rise and better utilize the high-end power that's getting bottlenecked right now.

Chris,
I feel sure that you've attempted this style before, and ruled it out. How did it perform in the Civic?

Starts like this!

Yep! Yep!

chrisbaldelli wrote:

If Chris is really dealing with power compression... a "Thor's Hammer" box would give the woofers a little more room to breathe. I'm not experienced enough to say it would gain, but it would probably decrease the effects of impedance rise and better utilize the high-end power that's getting bottlenecked right now.

Chris,
I feel sure that you've attempted this style before, and ruled it out. How did it perform in the Civic?

I did a similar setup. He has those big 10's so he had room for that port. Damn nice build! . I only got 156+ with that setup.

chapdawg1971 wrote:

Have you followed or seen this build.....?

http://www.caraudioclassifieds.org/forum/sa/68458-sundown-trunk-build-5.html

See post #129, I've been trying to squeeze a box of this type into my trunk and after watching some of your vids it seems like you're tuned higher, like this. I'm more into the lower 40hz area at 150db

I haven't! I will read that tonight.

Looks good, tight fight too. Also looks like you'd have some room to slide it back some to do some tweaking if needed..

Thanks!
Some better pics

what you get chris? i need some recones an bad man these alpha's are soooo waiting to start back playing.

i have some re cones but i will be needing them with a open port like this one

no more sb classes

lol i doubt it. subs will start actin stupid lol

rowland i don't know about me though man i may just start building for trunk unlimited with fish this year i don't know. if i gotta play high i will but if i can keep tuning lower than 50 an do good numbers i will do sb this year.

supadave wrote:

lol i doubt it. subs will start actin stupid lol

rowland i don't know about me though man i may just start building for trunk unlimited with fish this year i don't know. if i gotta play high i will but if i can keep tuning lower than 50 an do good numbers i will do sb this year.

Interchangeable port?

Now for back here!

I like this setup. Especially the radiused corners. It should flow nicely and give the woofers an appropriate amount of air space (even at high power)

The trunk looks like you could fit 4 d9's and a couple batteries back there (with room to spare!). Tasty.

It looks like ~2 cf/woofer. What have you found to be the optimal box size (internal volume) for HW's? Also, any reason not to double baffle since you have room?

This only a test box. I will resin and second layer if I like it. I have 2 nsb 100's in the spair tire hole
and 3 nsb 90's to stuff in later after the show on the 22nd .

very nice work

Very nice indeed. Are you going to do anything with the port wall as far as round overs, pvc or anything? Just curious.

chapdawg1971 wrote:

Very nice indeed. Are you going to do anything with the port wall as far as round overs, pvc or anything? Just curious.

Yea.. if it tests out ok I will pump it out with all the spl bells and whistle.

I have a sub clapping. But I am going to test anyway.

Uh oh on the sub.....

I've really wanted to try a box like this, but wouldn't know where to begin with my vehicle's low res freq.

What car do you have?

96 Saturn SC2 freq is around 44ish

chapdawg1971 wrote:

96 Saturn SC2 freq is around 44ish

How did you determine this? It looks mid 50's to me.

Nope, sealed boxes out the ying yang, plus from another guy who has experience with them. They vary from 44 to 47ish. Mine seems to be loudest at 42, but that's my current setup at a clamped 2230 watts on two SA12's in 5.5cubes. Averaging (now) 49.7

But the one I'm working on now is tuned a lot higher and on lower power has yielded potentially better numbers.

So I guess the 47 isn't far off from the 50

The note of the car is going to change with pressure... legal to outlaw..etc. I wouldn't focus on those notes. Build it and let it play what the setup wants. I doubt its going to be mid 40s

^^^That's probably one of the reasons why I haven't built one tuned so high as I was worried about fail. I'm going to have to reconsider and just do it and hope for the best.

Well as long as your building boxes "tuned" to a grew your going to be running in circles. Chase impedenxe rise and power and scores..