DIY Speaker install on G35 sedan with non-bose
#16
Ohms is the resistance of the speaker. A 4 ohm is a higher resistance than 2 ohm. Generally speaking, in the car audio industry, a 4 ohm is a better application. The BASIC reason being that most amplifiers are rated at 4 ohms, and when dropping down to 2 ohms, it makes the amplifier work harder, and reduces the distance between peak power and nominal power (meaning less powerful peaks). Bose uses 2 ohm, because they can send the same amount of power to them and make them seem louder than if they were 4 ohm speakers. Most home systems use 8 ohm because it is easier to create a larger power supply. Again, this is the BASIC reason.
#17
Here are some pics of the rear Polk 6.5" DB650 coaxials mounted on their spacers. These will be installed in the morning.
Once again, all four factory door speakers in the sedan without bose (at least in my 2004 sedan) are the exact same dimensions - 6.5".
Notice the hole drilled at the side to allow for the speaker wires to exit from behind the speaker when attached.
Once again, all four factory door speakers in the sedan without bose (at least in my 2004 sedan) are the exact same dimensions - 6.5".
Notice the hole drilled at the side to allow for the speaker wires to exit from behind the speaker when attached.
Last edited by rupdog326; 09-22-2005 at 12:30 AM.
#19
Hey, I am going to reference you to another thread...
https://g35driver.com/forums/audio-video-electronics/23664-lacking-midbass-my-components.html
I was just posting over there, and it reminded me of one thing I forgot to tell you about. You should try to create an air tight seal with the spacers against the door. I did this using silicone, but you can attempt to use some kind of weather stripping too (like the stock speaker spacers have on the back). This will greatly improve your midbass.
https://g35driver.com/forums/audio-video-electronics/23664-lacking-midbass-my-components.html
I was just posting over there, and it reminded me of one thing I forgot to tell you about. You should try to create an air tight seal with the spacers against the door. I did this using silicone, but you can attempt to use some kind of weather stripping too (like the stock speaker spacers have on the back). This will greatly improve your midbass.
#20
Originally Posted by khsonic03
Hey, I am going to reference you to another thread...
https://g35driver.com/forums/showthread.php?t=23664
I was just posting over there, and it reminded me of one thing I forgot to tell you about. You should try to create an air tight seal with the spacers against the door. I did this using silicone, but you can attempt to use some kind of weather stripping too (like the stock speaker spacers have on the back). This will greatly improve your midbass.
https://g35driver.com/forums/showthread.php?t=23664
I was just posting over there, and it reminded me of one thing I forgot to tell you about. You should try to create an air tight seal with the spacers against the door. I did this using silicone, but you can attempt to use some kind of weather stripping too (like the stock speaker spacers have on the back). This will greatly improve your midbass.
#21
Well, that is a better seal than using nothing. I still might suggest sealing it better, but you might want to wait and see how much midbass you are getting. As El duderino mentioned on the other forum, he feels that the space between the spacer and the inner door grille is more important than sealing the rear. I personally have had good success with just a rear seal, but I'm sure it couldn't hurt to do what he says also. I might even give it a shot on my vehicle.
#22
Originally Posted by khsonic03
Well, that is a better seal than using nothing. I still might suggest sealing it better, but you might want to wait and see how much midbass you are getting. As El duderino mentioned on the other forum, he feels that the space between the spacer and the inner door grille is more important than sealing the rear. I personally have had good success with just a rear seal, but I'm sure it couldn't hurt to do what he says also. I might even give it a shot on my vehicle.
Once again, I have to say that replacing the speakers alone is a very dramatic improvement over the stock pieces of **** panasonic speakers.
#23
#24
The reason that Bose likes to use a 2 ohm speaker is that you can generate more power without building a decent power supply for your amp. THe power supply is the second most expensive part after the heat sink extrusion.
Ohm's law says that if your voltage stays the same (the power supply) and your resistance goes down, your current must go up (until something fails).
It also means that during musical peaks, since your amp is passing almost all the current it can during normal operation, there isn't muc in the way of dynamic headroom. So distortion climbs dramatically during those peaks.
Bose is really good at saving money. Not at sonic performance, just at saving ooney.
Ohm's law says that if your voltage stays the same (the power supply) and your resistance goes down, your current must go up (until something fails).
It also means that during musical peaks, since your amp is passing almost all the current it can during normal operation, there isn't muc in the way of dynamic headroom. So distortion climbs dramatically during those peaks.
Bose is really good at saving money. Not at sonic performance, just at saving ooney.
#26
Originally Posted by shoeless
Enjoyed your install pics. Quick question: did you ever replace the amp, or was the change pretty dramatic just by swapping the speakers?
Thanks,
Shoeless
Thanks,
Shoeless
#28
#29
Originally Posted by el_duderino
The reason that Bose likes to use a 2 ohm speaker is that you can generate more power without building a decent power supply for your amp. THe power supply is the second most expensive part after the heat sink extrusion.
Ohm's law says that if your voltage stays the same (the power supply) and your resistance goes down, your current must go up (until something fails).
It also means that during musical peaks, since your amp is passing almost all the current it can during normal operation, there isn't muc in the way of dynamic headroom. So distortion climbs dramatically during those peaks.
Bose is really good at saving money. Not at sonic performance, just at saving ooney.
Ohm's law says that if your voltage stays the same (the power supply) and your resistance goes down, your current must go up (until something fails).
It also means that during musical peaks, since your amp is passing almost all the current it can during normal operation, there isn't muc in the way of dynamic headroom. So distortion climbs dramatically during those peaks.
Bose is really good at saving money. Not at sonic performance, just at saving ooney.
#30
Originally Posted by falconey
That was a lot better explanation of ohms than the original ohm explanation in this thread. I don't know how someone with common sense would think that more resistance when dealing with electricity is a good thing, especially if you're trying to get the maximum amount of power to the speakers while using the least amount of energy. Lower ohm speakers are more expensive, usually built better, and are more effecient than higher ohm speakers.