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post #1 of 2 Old 11-21-2015, 02:47 PM Thread Starter Newbie
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Have a 2003 Hyundai Tiburon with an Infinity am/fm, casset, cd radio wit a subwoofer. The subwoofer blew out. Like to replace it. Found no info on the speaker. Bought a Rockfuss speaker from Amazon. It has 250 watts rms & 500 watts peak. It's a duo voice coil speaker. Very little sound is produced. Is speaker bad or do I need an amp? Only 4 wires are connected to the speaker, 2 green & 2 black.
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post #2 of 2 Old 11-22-2015, 11:41 PM Novice
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Re: subwoofer

Adrian, welcome to the club. I think the Rockford Fosgate? sub you intended to replace the stock Infinity one with needs way more power than your stock amp can send it. 250 RMS will barely work on that Hyundai JBL amp that is designed to send maybe 60-90 Watts to the sub. I would either get a separate 250/500 W rated Mono amp to power the new sub or ditch the sub and look for a stock replacement to swap in.

I know this because added the 8" sub from an older Tib (like yours) into my 2008 which didn't have one by wiring a Mono sub inline which was only rated for 60W @ 2 Ohm and 90W @ 1 Ohm. Since I bridged the dual 4 Ohm voice coils in the sub, the 60W @ 2 Ohm seems to be the perfect power level for it.

Maybe somebody can move this into the interior/audio section where more people can see it and it's more relevant.

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Last edited by Mr.Tibbs; 11-22-2015 at 11:45 PM.
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