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The Water Cooler
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Older Stereo/Speakers Question: Make Momma Happy
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<blockquote data-quote="tRidiot" data-source="post: 1673824" data-attributes="member: 9374"><p>8 ohm speaker will work just fine on the old system. However, the power output will be somewhat lower than if they were the rated 6 ohm speakers. Odds are, you won't notice much, unless you buy very power-hungry speakers.</p><p></p><p>4-ohm speakers will <strong>likely </strong>also work, though the system's internal amplifier will run hotter and may be more prone to frying, or distortion.</p><p></p><p>Think of the power to your speakers as water in a stream flowing downhill... the lower the impedance of the speakers (ohms), the steeper the hill, the faster the water flows (more power), but also likely more turbulent (distortion). The shallower the slope of the hill, the slower the water flows, but less turbulent.</p><p></p><p>Hope that helps a bit.</p><p></p><p>Oh... and whomever told you that the 8-ohm speakers <strong>won't work</strong> with your system needs one to the hip. They're sorely misinformed.</p><p></p><p>My advice... check the sensitivity ratings of the various speakers (if possible). Higher sensitivity means less power needed to achieve a given level of output (volume). Short version, if a speaker's sensitivity rating (at a given impedance and frequency, if you want to get overly technical) is 3dB higher than another, it will be audibly twice as loud with the same power. So, say a 6-ohm speaker with an 89dB sensitivity vs. an 8-ohm speaker with 95dB sensitivity (again, at same freq) will take much more power to achieve the same volume level. Theoretically-speaking 4x as much. So, the 6- or 8-ohm difference in impedance isn't usually something that's going to affect you much... amplifier will put out less power at 8 ohms than 6 ohms, but frequently those 8-ohm speakers will have a higher sensitivity rating, thus negating most of the power differences, as long as your amp is rated to run the lower impedance.</p><p></p><p>Going to a lower impedance (aka 4 ohms) may cause your amp to run hotter and harder, but the amp may have some good build quality and cushion built in and could handle it easily. A little more risky proposition.</p><p></p><p>8-ohm speakers WILL NOT be any harder on your amp.</p></blockquote><p></p>
[QUOTE="tRidiot, post: 1673824, member: 9374"] 8 ohm speaker will work just fine on the old system. However, the power output will be somewhat lower than if they were the rated 6 ohm speakers. Odds are, you won't notice much, unless you buy very power-hungry speakers. 4-ohm speakers will [B]likely [/B]also work, though the system's internal amplifier will run hotter and may be more prone to frying, or distortion. Think of the power to your speakers as water in a stream flowing downhill... the lower the impedance of the speakers (ohms), the steeper the hill, the faster the water flows (more power), but also likely more turbulent (distortion). The shallower the slope of the hill, the slower the water flows, but less turbulent. Hope that helps a bit. Oh... and whomever told you that the 8-ohm speakers [B]won't work[/B] with your system needs one to the hip. They're sorely misinformed. My advice... check the sensitivity ratings of the various speakers (if possible). Higher sensitivity means less power needed to achieve a given level of output (volume). Short version, if a speaker's sensitivity rating (at a given impedance and frequency, if you want to get overly technical) is 3dB higher than another, it will be audibly twice as loud with the same power. So, say a 6-ohm speaker with an 89dB sensitivity vs. an 8-ohm speaker with 95dB sensitivity (again, at same freq) will take much more power to achieve the same volume level. Theoretically-speaking 4x as much. So, the 6- or 8-ohm difference in impedance isn't usually something that's going to affect you much... amplifier will put out less power at 8 ohms than 6 ohms, but frequently those 8-ohm speakers will have a higher sensitivity rating, thus negating most of the power differences, as long as your amp is rated to run the lower impedance. Going to a lower impedance (aka 4 ohms) may cause your amp to run hotter and harder, but the amp may have some good build quality and cushion built in and could handle it easily. A little more risky proposition. 8-ohm speakers WILL NOT be any harder on your amp. [/QUOTE]
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