4 ohm vs 2 ohm
05-01-2013, 06:05 PM
#11
Sent from the fast lane while driving one handed.
05-01-2013, 06:18 PM
#12
So splitting hairs on a factory amp and the controversy of 2 ohms vs 4.
The real advantage of the two ohm speaker in a factory system? By the time you add in the under gauged size wire running amuck in Chrysler cars, it's really closer to a 3-4 ohm load at the factory amp.
Sent from the fast lane while driving one handed.
05-01-2013, 06:24 PM
#13
Sent from the fast lane while driving one handed.
05-01-2013, 06:28 PM
#14
I don't think they are wired backwards. I can definitely hear the tweeter behind my head now. I will try the test after work, though.
BTW, I saw that +/- wire color before, but mine weren't those colors. The driver side was green w/ a white stripe, and black with a white stripe. The passenger side was something like green w/ a white stripe and light blue or gray with a white stripe. What I did was look at how the clip was connected to the stock speaker. I assumed right-side wire going into the clip was positive, as the right side post on the Polk speaker is the positive side. So I reattached the left speaker wire to the negative side on the polk, and the right speaker wire to the positive side for the Polk.
BTW, I saw that +/- wire color before, but mine weren't those colors. The driver side was green w/ a white stripe, and black with a white stripe. The passenger side was something like green w/ a white stripe and light blue or gray with a white stripe. What I did was look at how the clip was connected to the stock speaker. I assumed right-side wire going into the clip was positive, as the right side post on the Polk speaker is the positive side. So I reattached the left speaker wire to the negative side on the polk, and the right speaker wire to the positive side for the Polk.
Sent from the fast lane while driving one handed.
05-01-2013, 06:30 PM
#15
JK Super Freak
Not always the case. Some speakers are so much more efficient that the net result, even with less power, is more output. Remember, the factory amp loses approximately 50% of its rms power when the resistance load doubles. That is the equivalent of 3db of sound output potential loss. If the factory speakers are about 86-87db efficient with 2.83volts (one watt) at one meter and the new speakers are 92-93db effecient, the overall effect would sound as if the power output had been DOUBLED. That being said, doubling power adds 3db of output. And for it to SOUND twice as loud the power has to increased by a factor of 10. So in order for a 100 watt system to sound twice as loud it would have to have its power increased to 1000 watts. Simply going to 200 watts would make it sound roughly 33% louder. Likewise, going from 2 ohms to 4 ohms would create a net loss of 15%. 15 % of not much, well, ain't much.
So splitting hairs on a factory amp and the controversy of 2 ohms vs 4.
The real advantage of the two ohm speaker in a factory system? By the time you add in the under gauged size wire running amuck in Chrysler cars, it's really closer to a 3-4 ohm load at the factory amp.
Sent from the fast lane while driving one handed.
So splitting hairs on a factory amp and the controversy of 2 ohms vs 4.
The real advantage of the two ohm speaker in a factory system? By the time you add in the under gauged size wire running amuck in Chrysler cars, it's really closer to a 3-4 ohm load at the factory amp.
Sent from the fast lane while driving one handed.
There are more variables than just amp power and speaker impedance.
05-01-2013, 06:35 PM
#16
You might also make sure there is absolutely no air leaks around the mounting surface of the speaker. While not critical for the durability of the speaker( with subs, the enclosure must be absolutely leak free. Even vented enclosures must be leak free. The enclosure is part of the speakers mechanical suspension) it will cause severe bass loss as well.
Sent from the fast lane while driving one handed.
Sent from the fast lane while driving one handed.
05-01-2013, 07:25 PM
#17
Super Moderator
Join Date: Jun 2011
Location: Hendersonville, Tennessee
Posts: 11,035
Likes: 0
Received 80 Likes
on
72 Posts
Not always the case. Some speakers are so much more efficient that the net result, even with less power, is more output. Remember, the factory amp loses approximately 50% of its rms power when the resistance load doubles. That is the equivalent of 3db of sound output potential loss. If the factory speakers are about 86-87db efficient with 2.83volts (one watt) at one meter and the new speakers are 92-93db effecient, the overall effect would sound as if the power output had been DOUBLED. That being said, doubling power adds 3db of output. And for it to SOUND twice as loud the power has to increased by a factor of 10. So in order for a 100 watt system to sound twice as loud it would have to have its power increased to 1000 watts. Simply going to 200 watts would make it sound roughly 33% louder. Likewise, going from 2 ohms to 4 ohms would create a net loss of 15%. 15 % of not much, well, ain't much.
So splitting hairs on a factory amp and the controversy of 2 ohms vs 4.
The real advantage of the two ohm speaker in a factory system? By the time you add in the under gauged size wire running amuck in Chrysler cars, it's really closer to a 3-4 ohm load at the factory amp.
Sent from the fast lane while driving one handed.
05-02-2013, 02:32 PM
#18
Not always the case. Some speakers are so much more efficient that the net result, even with less power, is more output. Remember, the factory amp loses approximately 50% of its rms power when the resistance load doubles. That is the equivalent of 3db of sound output potential loss. If the factory speakers are about 86-87db efficient with 2.83volts (one watt) at one meter and the new speakers are 92-93db effecient, the overall effect would sound as if the power output had been DOUBLED. That being said, doubling power adds 3db of output. And for it to SOUND twice as loud the power has to increased by a factor of 10. So in order for a 100 watt system to sound twice as loud it would have to have its power increased to 1000 watts. Simply going to 200 watts would make it sound roughly 33% louder. Likewise, going from 2 ohms to 4 ohms would create a net loss of 15%. 15 % of not much, well, ain't much.
So splitting hairs on a factory amp and the controversy of 2 ohms vs 4.
The real advantage of the two ohm speaker in a factory system? By the time you add in the under gauged size wire running amuck in Chrysler cars, it's really closer to a 3-4 ohm load at the factory amp.
Sent from the fast lane while driving one handed.
So splitting hairs on a factory amp and the controversy of 2 ohms vs 4.
The real advantage of the two ohm speaker in a factory system? By the time you add in the under gauged size wire running amuck in Chrysler cars, it's really closer to a 3-4 ohm load at the factory amp.
Sent from the fast lane while driving one handed.
The Best setup in sound was the First High Prem Setup, Infinity 8 channel Amp, Prem Harman/Infinity Speakers with the Fronts being Bi-Amped...WoW...Nothing has beat the Sound yet....Simply 99% perfect with Ass Kickers Added inside Front seats to Feel the Bass, Perfect Wrangler System...
05-02-2013, 02:45 PM
#19
You might also make sure there is absolutely no air leaks around the mounting surface of the speaker. While not critical for the durability of the speaker( with subs, the enclosure must be absolutely leak free. Even vented enclosures must be leak free. The enclosure is part of the speakers mechanical suspension) it will cause severe bass loss as well.
Sent from the fast lane while driving one handed.
Sent from the fast lane while driving one handed.
.
Advantages of Vented Enclosures
1 - Reduced cone excursion and reduced distortion around vent tuning.
2 - Increased output capabilities around vent tuning.
3 - Vented boxes allow for specialized sound qualities such as the "bump" often preferred for rap and rock & roll.
.
Advantages of Sealed Enclosures
1 - High power handling capability
2 - Extended low frequency response and smooth rolloff (12dB/octave)
3 - Excellent transient response.
4 - Tolerant of minor enclosure size variations.
5 - Easiest enclosure to build.
1 - High power handling capability
2 - Extended low frequency response and smooth rolloff (12dB/octave)
3 - Excellent transient response.
4 - Tolerant of minor enclosure size variations.
5 - Easiest enclosure to build.
Disadvantages of Sealed Enclosures
1 - Requires a woofer with a longer voice coil.
1 - Requires a woofer with a longer voice coil.
05-02-2013, 02:47 PM
#20