Stuck at 146.38 :(

[Viperoni 0]

So yeah, even with better amp grounding causing less voltage drop on my voltmeter, and enabling my other 1/0g power line, I was no better then before. No matter if I was revving the crap out of the engine, or if the battery charger was connected.

Simply, the subs don't get any louder past a certain wattage, which I'm guesstimating to be in the 600 watt range, while my amp can put out about 1000 watts per sub.

And just for jokes, I played some music with the drivers side windows down, loudest was AM Kidd's - Bay Wid it, pushing 146.1db. It sounds LOUD as heck inside the car, and now it's confirmed that it's loud outside the car too

Interesting, I only got 142.5db with the windows closed on that track...

The next step is to port the box, probably going to use a single 6" PVC pipe pointing upwards, tuning the box to between 35-38hz.

I really hope I can crack 150

[vladd 26]

i might have missed it but what was the setup?

[Mike Troll 0]

I am not sure on his amps but I do know he is running a pair of MJ-18's.

[Viperoni 0]

pair of 4ohm MJ18's in 3.25cf sealed each, off an Earthquake PH-D3.

Dual 1/0g power wires, big 3 underhood, freshly rebuilt 85amp alternator, 1.5 year old energizer battery.

Edited March 17, 2007 by Viperoni

[topgun 262]

The 85 amp alternator might have something to do with it...

[Big E 4]

The 85 amp alternator might have something to do with it...

x2

Your amp is just begging for a bigger alternator

[Puggsley456 0]

No matter which way you cut it....146db sealed is quite an acomplishment!

[Viperoni 0]

Ah maybe, but it didn't make any difference going from a 10amp car charger to having the car running @ like 4-5krpm.

The subs have to be compressing a lot at that power level anyhow.

Thanks puggs, I'm happy with it, I just want more, as always

[Big E 4]

It doesn't matter what RPMs you're at, your alternator isn't gonna push more than a max of 85 amps, and your sub's amp is capable of drawing much more, ergo you're denying it power that it craves. If you beefed up your alternator, I'd almost guarantee you'd notice the difference by ear alone.

Edited March 19, 2007 by Big E