i dont know what im doin
Member
Joined: Jul 2008
Posts: 83
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My understanding of Ohms is as follows:
When electricity is passes into the speaker, some of it is resisted. The ohms rating of the speaker is a measure of how much electricity is resisted by the speaker, and an indication of how much energy it takes to drive it. The higher the ohms rating, the more difficult it is to drive.
When an amp manufacture gives it's wattage rating, it's always at a specific Ohm resistance. "100 watts @ 4 ohms," for example. When the resistance is 4 ohms, this amp will produce 100 watts. If that resistance changes, the amp will produce a different amount of watts.
IE: 100 watts @ 4 ohms it may produce 300 watts @ 2 ohms. Which would make your speaker hit harder. Someone please correct me if I am wrong.
Hope this helps.
When electricity is passes into the speaker, some of it is resisted. The ohms rating of the speaker is a measure of how much electricity is resisted by the speaker, and an indication of how much energy it takes to drive it. The higher the ohms rating, the more difficult it is to drive.
When an amp manufacture gives it's wattage rating, it's always at a specific Ohm resistance. "100 watts @ 4 ohms," for example. When the resistance is 4 ohms, this amp will produce 100 watts. If that resistance changes, the amp will produce a different amount of watts.
IE: 100 watts @ 4 ohms it may produce 300 watts @ 2 ohms. Which would make your speaker hit harder. Someone please correct me if I am wrong.
Hope this helps.
Technical Article Contributor
Joined: Aug 2006
Posts: 7,862
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From: Northern California
Run a 2 ohm load to a bridged 2 channel and enjoy the fireworks. NEVER do that.
While part of your post is definitely correct, you are missing a couple important details. While the amplifier can put out more power at a lower resistance, it also becomes less controlled at lower resistance. What this means is the sound quality is reduced at lower resistances, and the amplifier creates a ton more heat while drawing more current. Running extremely low resistances to get more power can get dangerous quickly and can easily damage equipment if not done right.
You need to check the lowest stable resistance rating of your amplifier before trying to run a lower resistance load. Most 2 channel amplifiers that are stable to 2 ohm in stereo mode are NOT stable at 2 ohm when bridged, which is why running a 2 ohm sub to that Sony amp with bridged channels is a pretty poor idea.
Also, some amplifiers have regulated power supplies so they can produce similar power at different resistances. The JL Audio HD series is a good example of this.
Not trying to argue here, just trying to help clear things up a bit.
Originally Posted by akmrue
My understanding of Ohms is as follows:
When electricity is passes into the speaker, some of it is resisted. The ohms rating of the speaker is a measure of how much electricity is resisted by the speaker, and an indication of how much energy it takes to drive it. The higher the ohms rating, the more difficult it is to drive.
When an amp manufacture gives it's wattage rating, it's always at a specific Ohm resistance. "100 watts @ 4 ohms," for example. When the resistance is 4 ohms, this amp will produce 100 watts. If that resistance changes, the amp will produce a different amount of watts.
IE: 100 watts @ 4 ohms it may produce 300 watts @ 2 ohms. Which would make your speaker hit harder. Someone please correct me if I am wrong.
Hope this helps.
When electricity is passes into the speaker, some of it is resisted. The ohms rating of the speaker is a measure of how much electricity is resisted by the speaker, and an indication of how much energy it takes to drive it. The higher the ohms rating, the more difficult it is to drive.
When an amp manufacture gives it's wattage rating, it's always at a specific Ohm resistance. "100 watts @ 4 ohms," for example. When the resistance is 4 ohms, this amp will produce 100 watts. If that resistance changes, the amp will produce a different amount of watts.
IE: 100 watts @ 4 ohms it may produce 300 watts @ 2 ohms. Which would make your speaker hit harder. Someone please correct me if I am wrong.
Hope this helps.
You need to check the lowest stable resistance rating of your amplifier before trying to run a lower resistance load. Most 2 channel amplifiers that are stable to 2 ohm in stereo mode are NOT stable at 2 ohm when bridged, which is why running a 2 ohm sub to that Sony amp with bridged channels is a pretty poor idea.
Also, some amplifiers have regulated power supplies so they can produce similar power at different resistances. The JL Audio HD series is a good example of this.
Not trying to argue here, just trying to help clear things up a bit.
Member
Joined: Jul 2008
Posts: 83
Likes: 0
Run a 2 ohm load to a bridged 2 channel and enjoy the fireworks. NEVER do that.
While part of your post is definitely correct, you are missing a couple important details. While the amplifier can put out more power at a lower resistance, it also becomes less controlled at lower resistance. What this means is the sound quality is reduced at lower resistances, and the amplifier creates a ton more heat while drawing more current. Running extremely low resistances to get more power can get dangerous quickly and can easily damage equipment if not done right.
You need to check the lowest stable resistance rating of your amplifier before trying to run a lower resistance load. Most 2 channel amplifiers that are stable to 2 ohm in stereo mode are NOT stable at 2 ohm when bridged, which is why running a 2 ohm sub to that Sony amp with bridged channels is a pretty poor idea.
Also, some amplifiers have regulated power supplies so they can produce similar power at different resistances. The JL Audio HD series is a good example of this.
Not trying to argue here, just trying to help clear things up a bit.
While part of your post is definitely correct, you are missing a couple important details. While the amplifier can put out more power at a lower resistance, it also becomes less controlled at lower resistance. What this means is the sound quality is reduced at lower resistances, and the amplifier creates a ton more heat while drawing more current. Running extremely low resistances to get more power can get dangerous quickly and can easily damage equipment if not done right.
You need to check the lowest stable resistance rating of your amplifier before trying to run a lower resistance load. Most 2 channel amplifiers that are stable to 2 ohm in stereo mode are NOT stable at 2 ohm when bridged, which is why running a 2 ohm sub to that Sony amp with bridged channels is a pretty poor idea.
Also, some amplifiers have regulated power supplies so they can produce similar power at different resistances. The JL Audio HD series is a good example of this.
Not trying to argue here, just trying to help clear things up a bit.
