Needing New Box And Subs

[Memphisman]

right now im running 2 memphis pr 12's pushing about 350 rms to each in just a sealed 1.5 cu foot box for each speaker. I am looking to design a new ported box, and looking to also get new subwoofers.

I have enough room to put as big as a 10 cubic ft box if i need,

i have the stock electrical system in my explorer, and relatively new to this stuff

which way should i point the port? what should i tune the box for? i listen to almost all rap.

I was looking at the Hifonics brutus B12D4 subs.

http://www.sonicelectronix.com/item_12409_...nics+B12D4.html

anybody know if they are any good?

or any other ideas for different subwoofers around the same price range?

[Kian]

ok im tired of my voltage on my system dropping to 11.6 volts on my car full tilt. i currently have a Kicker zx2500.1 on a Fi BTL 15" and 2 optimas yellow tops. i have the big 3 done and on a cold day at start up im at 14.6 volt and on a hot day im at 14.0 volts. i have enough for either a mechan H.O. Alt or a XS power master D3100. but i dont know what to get. but i do know im leaning toward the new ALT. whats your opinion?

[Kian]

ok im tired of my voltage on my system dropping to 11.6 volts on my car full tilt. i currently have a Kicker zx2500.1 on a Fi BTL 15" and 2 optimas yellow tops. i have the big 3 done and on a cold day at start up im at 14.6 volt and on a hot day im at 14.0 volts. i have enough for either a mechan H.O. Alt or a XS power master D3100. but i dont know what to get. but i do know im leaning toward the new ALT. whats your opinion?

[Kian]

double post.

[Beanz]

go with the new alternator!!!

[RamenNoodles]

Alternator for sure.

But god damn that is some serious voltage drop even though you have only 2500 rms to 2 YTs. What is the power of your current alternator?

[Beanz]

with that altenator you should be seeing maybe 13.6 with full tilt and later on get better batteries and the missing link module which should get you at 14.6-14.4 volts when doing full tilt.

[Kian]

for a 1998 nissan maxima its 100-110 amp @ 6K RPM's

[Guest Just_Rob]

ok im tired of my voltage on my system dropping to 11.6 volts on my car full tilt. i currently have a Kicker zx2500.1 on a Fi BTL 15" and 2 optimas yellow tops. i have the big 3 done and on a cold day at start up im at 14.6 volt and on a hot day im at 14.0 volts. i have enough for either a mechan H.O. Alt or a XS power master D3100. but i dont know what to get. but i do know im leaning toward the new ALT. whats your opinion?

What kind of Car is it? Is it dropping to 11.6 just at idle, or is it doing it at cruising speeds as well?? Either an alternator or a D3100 is going to help a lot and I would take one D3100 over the 2 yellow tops in a heartbeat, if you can do an alternator and a battery, then do both but I would ditch the yellow tops for the D3100 first. The biggest gain you'll have with the D3100 is just the raw reserve capactiy and the ability to rapidly discharge and recharge. Voltage on an alternator is all relative to heat and temerature compensation in the voltage regulator, the hotter they get the more they back off. MLA modules will help fix that problem if your not way over the alternators output capability IF you have the battery reserve capacity.

The biggest thing to remember, is that electricity is electricity and when your voltage goes down, amperage has to go up (dang ohms law, cant get around it) and ANY additional VOLTAGE you can get reduces the amount of AMPERAGE necessary, and in our line of work where more amperage=more heat which is bad, so when you step the voltage up, the amperage required has to go down and that is a GOOD Thing...

If there is anything else I can help with, let me know.... Rob

[Kian]

missing link module??? what is this?