if you invert the sub (magnet out) then you reverse the wiring. Yes the positive speaker wire does hook up to the negative terminal on the sub and vice versa if the subs are inverted. This is common sense just as much as it is good stereo knowledge. By reversing the wiring you are keeping the sub IN PHASE, again common or not so common sense. Shame for the lads who might be on here trying to learn a bit that they have to read pages of pure bull****,

Quote: Originally Posted by RB2GO [View Post] if you invert the sub (magnet out) then you reverse the wiring. Yes the positive speaker wire does hook up to the negative terminal on the sub and vice versa if the subs are inverted. This is common sense just as much as it is good stereo knowledge. By reversing the wiring you are keeping the sub IN PHASE, again common or not so common sense. Shame for the lads who might be on here trying to learn a bit that they have to read pages of pure bull****, Couldnt agree more, if people like HTURBO bothered to do a bit of reading, they would realise that just because they think something doesnt make it right. Im a sound technician and i work with an audio engineer who has been in the industry for 40+ years, this guy actually designs and builds speakers, from scratch. If i showed him this thread he would laugh. Running a driver out of phase is quite common in boxes we use, especialy when you have something like a dual horn loaded box etc. To put it simply, the surface area of the cone is the same on both sides, so it pushes the same amount of air both ways, front and back. As for damaging an amplifier by running out of phase, it just does not happen. I suggest doing a bit of reading, this is a good start: http://en.wikipedia.org/wiki/Loudspeaker And this is a really detailed book, http://books.google.com.au/books?id=...page&q&f=false (http://books.google.com.au/books?id=7QOcDeGFx4UC&printsec=frontcover&dq=live+sound+reinforcement&hl=en&ei=ewFgTNuwMYSqvQP0weGZDA&sa=X&oi=book_result&ct=result&resnum=1&ved=0CCcQ6AEwAA#v=onepage&q&f=false) Not trying to have a go at HTURBO here, just want to make sure that people reading this get correct information.

http://books.google.com.au/books?id=...page&q&f=false (http://books.google.com.au/books?id=7QOcDeGFx4UC&printsec=frontcover&dq=live+sound+reinforcement&hl=en&ei=ewFgTNuwMYSqvQP0weGZDA&sa=X&oi=book_result&ct=result&resnum=1&ved=0CCcQ6AEwAA#v=onepage&q&f=false) Chapter 2 nature of sound a) sound waves. READ!!!!!!!!!! I'm over it. I'm not going to argue with a bunch of kids. If you want to keep on arguing, argue with your selfs. I'm off. Going down to the milk bar driving my car backwards. lol.

Quote: Originally Posted by HTURBO [View Post] http://books.google.com.au/books?id=...page&q&f=false (http://books.google.com.au/books?id=7QOcDeGFx4UC&printsec=frontcover&dq=live+sound+reinforcement&hl=en&ei=ewFgTNuwMYSqvQP0weGZDA&sa=X&oi=book_result&ct=result&resnum=1&ved=0CCcQ6AEwAA#v=onepage&q&f=false) Chapter 2 nature of sound a) sound waves. READ!!!!!!!!!! I'm over it. I'm not going to argue with a bunch of kids. If you want to keep on arguing, argue with your selfs. I'm off. Going down to the milk bar driving my car backwards. lol. Mate no one is arguing, well im not anyway. I'm no kid mate, this is what i do for a living and quite frankly some of the stuff you have come up with is very imaginative at best. (ie. polarity protection?) if you can prove an amp has polarity protection you will get my apology. That chapter proves my point even better, the part where it reads about the cone moving inward creates a type of vacuum, and outward a pressure is correct. If you reverse the polarity or phase then that vacuum and pressure shift 180degrees from what it originally was, which is what you need to do if you flip the speaker around. Easiest test is to grab any decent speaker, flip it around, wire out of phase, and try and tell the difference in a blind test. You would not be able to do it, the minute difference in box capacity is negligible. Also, have a look at a waveform of any recorded track, on a bass hit, the wave will have the same distance up and down in amplitude on the graph, which means the driver reproducing the sound moves in and out the same amount. The term 'phase' is only relative to the rest of the speakers, meaning you just need to have the sub in the right phase as the rest of the speakers. If you wired all your speakers 180deg out of phase, then technicaly it is not actually out of phase with anything. Quite seriously though, to the OP and anyone else looking for real info, i would strongly disregard any info HTURBO has given here.

Quote: Originally Posted by SIK304 [View Post] Quite seriously though, to the OP and anyone else looking for real info, i would strongly disregard any info HTURBO has given here. Go fuk yourself child!!!!!!!!!!!

Quote: Originally Posted by SIK304 [View Post] Mate no one is arguing, well im not anyway. I'm no kid mate, this is what i do for a living and quite frankly some of the stuff you have come up with is very imaginative at best. (ie. polarity protection?) if you can prove an amp has polarity protection you will get my apology. Easiest test is to grab any decent speaker, flip it around, wire out of phase, and try and tell the difference in a blind test. You would not be able to do it, the minute difference in box capacity is negligible. Also, have a look at a waveform of any recorded track, on a bass hit, the wave will have the same distance up and down in amplitude on the graph, which means the driver reproducing the sound moves in and out the same amount. The term 'phase' is only relative to the rest of the speakers, meaning you just need to have the sub in the right phase as the rest of the speakers. If you wired all your speakers 180deg out of phase, then technicaly it is not actually out of phase with anything. Quite seriously though, to the OP and anyone else looking for real info, i would strongly disregard any info HTURBO has given here. Where's my apology. Have a look at the Kicker KX series. They have reverse polarity protection. And I said if your sub is out of phase with your other components then you'll have less bass. Also I didn't say anything about if all your speakers are out of phase. Where to you make this sh!t up. I said if you have one sub in phase & the other sub out of phase you'll have extra no bass. Also i would strongly disregard any info SIK304 has given here. I think someone needs to go back to school lol. Oh and don't forget to drive backwards. ---------- Post added 16-08-10 at 20:37 ---------- Quote: Originally Posted by SIK304 [View Post] Im a sound technician and i work with an audio engineer who has been in the industry for 40+ years, this guy actually designs and builds speakers, from scratch. If i showed him this thread he would laugh. Bullsh!t!!!!!!!!!!!

Quote: Originally Posted by HTURBO [View Post] Where's my apology. Have a look at the Kicker KX series. They have reverse polarity protection. And I said if your sub is out of phase with your other components then you'll have less bass. Also I didn't say anything about if all your speakers are out of phase. Where to you make this sh!t up. I said if you have one sub in phase & the other sub out of phase you'll have extra no bass. Also i would strongly disregard any info SIK304 has given here. I think someone needs to go back to school lol. Oh and don't forget to drive backwards. ---------- Post added 16-08-10 at 20:37 ---------- Bullsh!t!!!!!!!!!!! As someone else stated earlier, the reverse polarity protection is for the 12v connections, so you dont plug the battery into the ground terminal and vice versa. Being a DC amplifier that could damage the circuitry. Cant find any info about speaker polarity protection. If you have a link an apology is still up for grabs. Also here is a job we were doing Yesterday, so clearly i know nothing about audio engineering, its only a qurter million bucks worth of sound i was tuning. Some original photos have not been recovered yet.

Quote: Originally Posted by SIK304 [View Post] HTURBO is wrong, most if not all speakers have the same amount of travel in each direction, meaning they will push the same amount of air either way. Reversing polarity (or phase) will make no difference at all to the amplifier. Maybe do a bit of reading on the technical aspects of how a speaker works. You said reversing the polarity will have no affect on a amplifier. Try doing that to a Kicker KX series lol. OK time for a apology Some original photos have not been recovered yet.

Quote: Originally Posted by HTURBO [View Post] You said reversing the polarity will have no affect on a amplifier. Try doing that to a Kicker KX series lol. OK time for a apology Yeah, reversing speaker polarity has no effect. reversing power input polarity does. seems pretty simple to me. Have you found that link to the specs yet? Some original photos have not been recovered yet.

Quote: Originally Posted by SIK304 [View Post] Yeah, reversing speaker polarity has no effect. reversing power input polarity does. seems pretty simple to me. Have you found that link to the specs yet? We where never talking about power input polarity and what link to what specs??

Quote: Originally Posted by RB-30-ET [View Post] Amplifiers dont have protection mode for the polarity of the speaker outputs as you stated also, what I think you will find is the amp has polarity protection mode for incorrect power polarity connection. Well yes actually we were talking about power polarity at some point. Read above. After a link that says that an amplifier has polarity protection for wiring speakers out of phase.

http://reviews.cnet.com/car-amplifie...-30918975.html (http://reviews.cnet.com/car-amplifiers/kicker-kx-350-2/1707-6726_7-30918975.html) KICKER KX 350.2 - amplifier specifications General Product Type Amplifier Width 10.1 in Depth 16.0 in Height 2.5 in Audio System Amplifier signal-to-noise ratio 95.0 dB Amplifier continuous power / channel qty 110 Watts x 2 Amplifier output 2-channel Amplifier high level inputs Yes Amplifier input signal voltage 0.34 - 10V , 0.17 - 5V Crossover type 2-way active crossover Crossover slope 12.0 dB/octave Crossover low pass frequencies 50 - 200 Hz Crossover high pass frequencies 50 - 200 Hz Crossover bass boost frequency 40 Hz Crossover bass boost gain 0 to +18dB Amplifier total output power 350.0 Watt Amplifier Output Details 265.0 Watt - 4.0 Ohm - THD 1.0 % - 12.5V DC - 2.0 channel(s) , 110.0 Watt - 4.0 Ohm - THD 1.0 % - 14.4V DC - 1.0 channel(s) , 135.0 Watt - 2.0 Ohm - THD 1.0 % - 12.5V DC - 1.0 channel(s) , 70.0 Watt - 4.0 Ohm - THD 1.0 % - 14.4V DC - 2.0 channel(s) , 350.0 Watt - 4.0 Ohm - THD 1.0 % - 14.4V DC - 2.0 channel(s) , 175.0 Watt - 2.0 Ohm - THD 1.0 % - 12.5V DC - 2.0 channel(s) Additional features Over voltage protection , Bass level remote control , Thermal protection , Reverse polarity protection , Input level controls , Short circuit protection , Gold plated connectors Connections Connector Type 1.0 x Audio line-in ( RCA phono x 2 ) , 1.0 x Speakers input ( Screw-type ) , 1.0 x Audio line-out ( RCA phono x 2 ) , Remote Bass control ( Screw-type ) , DC power input , Speakers output

That doesnt say its for the speakers. It is for the power. Anyway, the amplifier has no way of knowing which way the speaker is connected, how could it have a protection mode for it.

If there's a diode it does. Also I don't know why you would want to run speakers out of phase.