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what is low imp?
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<blockquote data-quote="The_Quiet_One" data-source="post: 8575939" data-attributes="member: 614562"><p>A for effort, but you're spreading some misinformation.</p><p></p><p>1) Impedance is not resistance; it's impedance, resistance is reserved for DC current. Impedance, in regards to car audio subs ratings, is typically a nominal measure of how much an AC current is "impeded" by the load.</p><p></p><p>2) 2 ohms away from a dead short is very much an overly dramatic description. You are NEVER going to get close to a dead short with a subwoofer when it's wired at 2 ohms. You WILL NEVER reach an impedance below the DCR (DC Resistance) of the voice coil, which typically is only a few tenths lower than the rated impedance in most car audio subwoofers. Also impedance typically rises in practice due to heat, box rise, inductance, etc. You definitely can't make make a blanket statement about frequency's effect on impedance when a large portion of the dynamic load is due to extremely complex EM interactions between any induced EMF and the subwoofer motor.</p><p></p><p>3) A 2 ohm subwoofer amp is typically designed to handle the higher current associated with a lower impedance load. Unless your charging system is garbage or you bought a low quality amp it won't be overly hard on an amp. Have some faith in the engineers who designed some of the solid amps on the market today. Note: Typically it's much cheaper per watt to purchase an amp that produces solid power at lower impedances, and that power isn't just "on paper." High voltage amps tend to be a bit pricey and to maintain a similar power output at 4 ohms or higher is cost prohibitive to most consumers. I can find you a dozen affordable,reliable amps that make 2000 Watts at one ohm and handle it all day. 2000 Watts is a lot more difficult to find at 4 ohms, and you will likely be paying for it unless your willing to go with a Brazilian design.</p><p></p><p>4) As others said you seem to have the concept of parallel and series wiring backwards.</p><p></p><p>5) You were right this is an important topic and it's important that people have correct information</p><p></p><p>OP we need to know what amp you're using to really suggest the best wiring option. You've got the choice between 0.5, 2, and 8 ohms if you have 2 d2 subs</p></blockquote><p></p>
[QUOTE="The_Quiet_One, post: 8575939, member: 614562"] A for effort, but you're spreading some misinformation. 1) Impedance is not resistance; it's impedance, resistance is reserved for DC current. Impedance, in regards to car audio subs ratings, is typically a nominal measure of how much an AC current is "impeded" by the load. 2) 2 ohms away from a dead short is very much an overly dramatic description. You are NEVER going to get close to a dead short with a subwoofer when it's wired at 2 ohms. You WILL NEVER reach an impedance below the DCR (DC Resistance) of the voice coil, which typically is only a few tenths lower than the rated impedance in most car audio subwoofers. Also impedance typically rises in practice due to heat, box rise, inductance, etc. You definitely can't make make a blanket statement about frequency's effect on impedance when a large portion of the dynamic load is due to extremely complex EM interactions between any induced EMF and the subwoofer motor. 3) A 2 ohm subwoofer amp is typically designed to handle the higher current associated with a lower impedance load. Unless your charging system is garbage or you bought a low quality amp it won't be overly hard on an amp. Have some faith in the engineers who designed some of the solid amps on the market today. Note: Typically it's much cheaper per watt to purchase an amp that produces solid power at lower impedances, and that power isn't just "on paper." High voltage amps tend to be a bit pricey and to maintain a similar power output at 4 ohms or higher is cost prohibitive to most consumers. I can find you a dozen affordable,reliable amps that make 2000 Watts at one ohm and handle it all day. 2000 Watts is a lot more difficult to find at 4 ohms, and you will likely be paying for it unless your willing to go with a Brazilian design. 4) As others said you seem to have the concept of parallel and series wiring backwards. 5) You were right this is an important topic and it's important that people have correct information OP we need to know what amp you're using to really suggest the best wiring option. You've got the choice between 0.5, 2, and 8 ohms if you have 2 d2 subs [/QUOTE]
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