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Car Audio Help
Wiring, Electrical & Installation
Just clearing a few "myths"
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<blockquote data-quote="sforget" data-source="post: 49415" data-attributes="member: 544093"><p>I've been reading these posts and i've noticed a few people are trying to help people by stating myths. I'll try and clear up the ones i've seen</p><p></p><p>first off, to be accurate for finding impedance rating of parrallel circuits you don't divide by the number of speakes (anyone who has taken physics or electronics can tell you this) there is a formula to use and it s</p><p></p><p>1/Rtotal = 1/R1 + 1/R2 +1/R3 + etc. where R=resistance (impedance)</p><p></p><p>So Two 4-ohm speakers would have a impedance of 1/Rtotal = 1/4 + 1/4 = 2/4 = 1/2</p><p></p><p>so Rtotal=2 ohms</p><p></p><p>When wiring in series just add the ratings up. If wiring in Parrallel-series circuit you need to use both formulas.</p><p></p><p>Also UNDERPOWERING SPEAKERS TO LESS THAN ABOUT 1/3 POWER DOES MORE DAMAGE THAN OVERPOWERING. I don't know why, but ask any installer and they will tell you the same thing. You will also notice more distortion at lower power than you would at higher power.</p><p></p><p>One basic thing to remember is: DISTORTION DESTROYS SPEAKERS.</p></blockquote><p></p>
[QUOTE="sforget, post: 49415, member: 544093"] I've been reading these posts and i've noticed a few people are trying to help people by stating myths. I'll try and clear up the ones i've seen first off, to be accurate for finding impedance rating of parrallel circuits you don't divide by the number of speakes (anyone who has taken physics or electronics can tell you this) there is a formula to use and it s 1/Rtotal = 1/R1 + 1/R2 +1/R3 + etc. where R=resistance (impedance) So Two 4-ohm speakers would have a impedance of 1/Rtotal = 1/4 + 1/4 = 2/4 = 1/2 so Rtotal=2 ohms When wiring in series just add the ratings up. If wiring in Parrallel-series circuit you need to use both formulas. Also UNDERPOWERING SPEAKERS TO LESS THAN ABOUT 1/3 POWER DOES MORE DAMAGE THAN OVERPOWERING. I don't know why, but ask any installer and they will tell you the same thing. You will also notice more distortion at lower power than you would at higher power. One basic thing to remember is: DISTORTION DESTROYS SPEAKERS. [/QUOTE]
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Just clearing a few "myths"
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