I have a question for you all. I blew out my factory rear speakers last week, and I don't have the money yet on hand to buy a nice set of speakers to replace them... but I have really great 12" speakers from my home theater and had an extra pair so I took one and connected it to the rear speaker line. Can this going to damage my car in any way? If it will I will take it out and just do without rear speakers for a while until I can get a nice set. I just don't want to dish out a chunk of money just to get a cheap set of soeakers and then have to dish out more when I upgrade. I'll be honest with you though that speaker I put in the trunk sounds so bad ass. I'm getting nice bass from it and I don't even have an amp yet.
Well, it depends on the setup your car had. For example, my factory rear speakers were labelled 10 Ohm , though my replacements are 4 ohm Pioneers. BUT, I don't know if the factory deck is expecting a 10 ohm load through the rear speakers. If so, you would be running (more than likely) an 8 Ohm home speaker. I don't think you would have too much problem with a small difference like that. One thing you'll have to watch though, is making sure you don't push distortion through that speaker. Also, and if someone can leme know if I'm wrong or whatever, IF the stock deck is set up for 4 ohm rears, and there was something in the system letting the 10 ohm factory speakers being used with no ill effects, OR if you have an aftermarket deck, which would be happier with a 4 ohm setup, you may want to rethink that speaker. If you have 4 ohm deck, pushing an 8 ohm speaker, after a while, the deck will end up working too hard and possibly burn out the internal amp in the deck.
CharlzO wrote:If you have 4 ohm deck, pushing an 8 ohm speaker, after a while, the deck will end up working too hard and possibly burn out the internal amp in the deck.
Just the opposite. A deck rated at 4 ohms would not work as hard pushing an 8 ohm speaker as it would a 4 ohm speaker.
Um..last I checked, 8 ohms is more resistance than 4 ohms...hence, work harder.
Labotomi wrote:CharlzO wrote:If you have 4 ohm deck, pushing an 8 ohm speaker, after a while, the deck will end up working too hard and possibly burn out the internal amp in the deck.
Just the opposite. A deck rated at 4 ohms would not work as hard pushing an 8 ohm speaker as it would a 4 ohm speaker.
hes right, less ohms = less work
such as an amp is only stable down to a certian ohm rating, anythign above that you lose power and its fine
need edit button, less ohms = more work
CharlzO wrote:Um..last I checked, 8 ohms is more resistance than 4 ohms...hence, work harder.
more ohms = less work. I'd explain it but I'm too tired and you wouldn't listen.
Labotomi wrote:CharlzO wrote:Um..last I checked, 8 ohms is more resistance than 4 ohms...hence, work harder.
more ohms = less work. I'd explain it but I'm too tired and you wouldn't listen.
Well if you're not going to explain it, don't bother posting.
If I had to guess, I would say that maybe he's right and it does make your amp work harder if you're running a lower than rated speaker. Reason being is because your amp is designed to put out power based on recieving 4 ohms of resistance... so if you put on 2 ohm speakers then it would be like leaning against a door that was open and you didn't know it. More power than the amp is rated for will get pulled out.
If you go with a higher Ohm than rated you're just going to get less power going into the speaker and will lose volume, so if you turn up your volume really high than you're making your amp work harder because you have it cranked up louder than what you're actually hearing.
So... eh you're both right I guess.
Current equals E/Z (Voltage divided by Impedance)
Impedance (think resistance or ohms) goes down by two therefore current doubles.
Power = E*I (Voltage times Current)
If current doubles then power doubles.
In review: Lower Ohms = More power = Work Harder
Would it help if I just got a cheap amp for now? Those speakers in my trunk really sound a whole lot better than my old busted factory speakers, lol.
Yes, get an amp, it will sound way better.
And just to through in my .02, Labotomi, are right. Think of it like this. Lower Ohm= more current going through the speaker= more heat. Heat+audio comonents=bad. By running at a higher impedence, You will get less power through the speaker, but it will run cooler, hence, less work for the headunit or amplifier.
-Chris
