So, without the sub taking up space in the box, you can get more out of it? And when you invert it, it doesn't hurt the sub or make it sound any diff. does it?
weston
Unregistered guest
Posted on
The only thing that inverting the polarity does it change the direction of speaker displacement. Try this. Take any AA battery and put the ends of the speaker wire running from the speaker on each end of the battery. You will notice the speaker moves. Either it will move in or out. Now flip the battery around (reversing the polarity) and the speaker will move in the opposite direction. That is the only thing that polarity does.
whoa whoa, hold on guys. you mean, when you invert the subs, then you have to change the positive and the negative wires (the output on the amplifier) on the amplifier? damn, this thing is confusing me. can someone show me some kind of diagram? i have two type r subs, slot ported right now and i think they sound fine. would it matter if it's ported or sealed?
You can mount a sub inverted in any type of box. What this changes is the sub's displacement isn't inside the enclosure, so your box's net volume increases. The sound is exactly the same. Example, your box is 1.0 cu ft gross, your sub's displacement is .1, so your box is .9 cubic foot net when the sub is in the box. If you invert the sub, the box increases back to 1 cu ft. In a sealed box, this will give a little extra bandwidth. In ported boxes, this changes the tuning, since the sub's displacement is being removed, the tuning frequency will be lower. You have to reverse the polarity for one reason. When the sub is running a positive signal, the sub moves forward. Inverted, you'll have the effect of the sub moving backward since the sub is turned around. By swapping the polarity, this will reverse this and the phase will be the same as if the sub were inside the box. The main reason for inverting subs is just to show off the motor. In sealed boxes, voice coils can also get better cooling by inverting the subs, but this usually isn't an issue anyway as the sub will reach max. excursion by the time the voice coil reaches it's limits anyway. You see inverted subs the most with show guys, especially those showing off Audiobahn flame baskets *puke*. Eclipses look awesome inverted, those motors are HUGE.