Slow/n\low thinks that tinted has only been around car audio for a few years and doesnt realize alma gates had been with PPI back in the day, and that he doesnt know what a phase shift is

lol u tell me why they are there then??? if u only send a specifid hz to your sub u dont need anything else with respect to processors, this is by your own reasoning. so why would u need a phase controler

no i have no clue what phase shifters are

[ March 19, 2004, 12:45 AM: Message edited by: Tinted ]

tell me what a phase shifter is and what it does

Well, when subs are different distances from the mic what happens to the sound wave at the mic?

[ March 19, 2004, 12:54 AM: Message edited by: DWVW ]

so are u saying that u are to contradict your previouse statement?

on the pressure sensor nothing happens to the sound wave at the mic if subs are reasonably close to the mic. i've also tried this test with my sensor in my very own car. place the mic anywhere on the windshiled while moving the boxes from side to side, still get VERY similar score every time, with in 0.3 db.

What if the subs are not an equal distance from the mike by a significant distance?

How am I contradicting myself?

say wha bro?

doesn't the phase shifter just invert the signal being amplified by that particular amp? You need these to run multiple amps on single woofers. For example to run four mtx 81000d's on one rfl you need the Lsx2 crossovers so that you can perform the operation of inverting the signal by 180 degrees. This allows you to put one amp per post on the dvc woofer. With the amps on the negative posts put 180 degrees out of phase. Makes two push and two pull. This is a pain in the ass so now the new 1501d's have the phase shifter built in as the remove the LSX2. Yes, I believe derrik is right on the pahse shifter about the sound wave when it hits the mics. If the sound start a point A and travels to point B by going from low to high pressure. What would happen if you inverted the signal it would start at a different point and hit the windshield at a different point. I may be wrong but when sound travels it resembles a sinusoidal wave i believe. Reflection has a lot to do with it too i think.

I could also be far off so iff anyone has any input let me know it is the only way to learn [img]graemlins/thumb.gif[/img]

The LSX2 will not invert a channel, that's what you need to do to run multiple amps on a single coil.

On ALma's install, to fit 64 subs the box was not a flat wall, the Phase shifters allowed you to adjust the phase (not just 180 which you could just flip the polarity with the speaker wires) but infinitely up to 180 degrees I believe. She used the phase shift controllers to ensure all sound waves were in alignment at the mic position

Good night, back at this thread tommorrow [img]graemlins/thumb.gif[/img]