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General Car Audio
Impedance vs. channels situation
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<blockquote data-quote="thylantyr" data-source="post: 2537882" data-attributes="member: 560358"><p>The general rule is that receivers with multichannel ability will never be as good</p><p></p><p>as a dedicated amplifier driving lower impedances. Each brand will make claims</p><p></p><p>but who knows what each specific model does unless you get some 3rd party</p><p></p><p>tested data. If you buy a good brand, no less than 6 ohms is a safe bet. After</p><p></p><p>that, it's a crap shoot unless you do more detailed homework on the specific</p><p></p><p>model of interest.</p><p></p><p>You are better off getting the lowest cost receiver {buy it used} that has</p><p></p><p>preouts to allow an upgrade path later to external amplification. Make sure</p><p></p><p>the lower end receiver has other features that you really plan to use as many</p><p></p><p>have stuff you will never use.</p><p></p><p>As time passes, collect good amplifiers and they will stay with you for a long</p><p></p><p>time. As time passes, technology advances and it's time for a new receiver again</p><p></p><p>because it may have a feature you want. Since your have your amps, you don't</p><p></p><p>need the higher end receiver to get the higher power ratings - unless of course</p><p></p><p>that feature you really want only comes in the high end model. Manufacturers like</p><p></p><p>to scam that way alot to **** customers.</p><p></p><p>Another strategy is to use the receiver to power the weaker speakers in</p><p></p><p>your system, lets say some rear surrounds, maybe a center channel. Lets</p><p></p><p>say you build or bought some monster towers that are lower impedance, difficult</p><p></p><p>for the receiver to drive, well then just get a 2 channel amp to drive those two</p><p></p><p>and the receiver to drive the other speakers. Just make sure you have some</p><p></p><p>RCA preouts to allow an upgrade path.</p><p></p><p>Don't worry about speaker power ratings and trying to match it to the receiver</p><p></p><p>or power amplifier's power ratings. Connect your 50w speakers to a 500w</p><p></p><p>amp, realistically there is no issue unless you do something dumb.</p></blockquote><p></p>
[QUOTE="thylantyr, post: 2537882, member: 560358"] The general rule is that receivers with multichannel ability will never be as good as a dedicated amplifier driving lower impedances. Each brand will make claims but who knows what each specific model does unless you get some 3rd party tested data. If you buy a good brand, no less than 6 ohms is a safe bet. After that, it's a crap shoot unless you do more detailed homework on the specific model of interest. You are better off getting the lowest cost receiver {buy it used} that has preouts to allow an upgrade path later to external amplification. Make sure the lower end receiver has other features that you really plan to use as many have stuff you will never use. As time passes, collect good amplifiers and they will stay with you for a long time. As time passes, technology advances and it's time for a new receiver again because it may have a feature you want. Since your have your amps, you don't need the higher end receiver to get the higher power ratings - unless of course that feature you really want only comes in the high end model. Manufacturers like to scam that way alot to **** customers. Another strategy is to use the receiver to power the weaker speakers in your system, lets say some rear surrounds, maybe a center channel. Lets say you build or bought some monster towers that are lower impedance, difficult for the receiver to drive, well then just get a 2 channel amp to drive those two and the receiver to drive the other speakers. Just make sure you have some RCA preouts to allow an upgrade path. Don't worry about speaker power ratings and trying to match it to the receiver or power amplifier's power ratings. Connect your 50w speakers to a 500w amp, realistically there is no issue unless you do something dumb. [/QUOTE]
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Impedance vs. channels situation
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