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SC430 - 2nd Gen (2001-2010)

Line Out Converter keeps melting

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Old Dec 26, 2010 | 09:55 PM
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Default Line Out Converter keeps melting

I have replaced the factory sub with a 4 ohm Pioneer shallow mount sub and a rockford fosgate amp. I put a line out converter in to transmit the signal as suggested here https://www.clublexus.com/forums/lex...all-sc430.html

The problem I'm having is my line out converter seems to get really hot. The first one I installed literally blew up.... the second I mounted in a more vented area away from anything else that could get hot but I still smell it melting every so often and the plastic shell is melting.

Any ideas as to why this is happening? Thanks in advance!
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Old Dec 27, 2010 | 06:47 AM
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If you're connecting to the amp's speaker out, is your converter rated for 8 ohms?

Most car stereos use 4 Ohm speakers/outputs. Most home stereos use 8 Ohm speakers/outputs.

The ML system in the SC430 is 8 Ohms.
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Old Dec 27, 2010 | 08:14 AM
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Originally Posted by Habious
If you're connecting to the amp's speaker out, is your converter rated for 8 ohms?

Most car stereos use 4 Ohm speakers/outputs. Most home stereos use 8 Ohm speakers/outputs.

The ML system in the SC430 is 8 Ohms.
+1 it's the 4ohm/8ohm issue.

I'd abort before you cause more damage and go with something like these polk or JL woofers instead:

http://cgi.ebay.com/NEW-JL-AUDIO-10W...item4aa747efa1

http://cgi.ebay.com/ebaymotors/JL-Au...fAudioQ5fVideo

http://cgi.ebay.com/Polk-Audio-10in-...item230cb08ac2

*****Check out this thread...this is the BIBLE for SC430 speaker jobs:

https://www.clublexus.com/forums/lex...l-sc430-3.html
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Old Dec 27, 2010 | 08:43 AM
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That is the link I referred to also.

"As you will see I replaced the factory 16 ohm sub woofer with a Polk Audio 4 ohm powered by a MA Audio amp. This gave the system that much needed punch in the low end."

This is what I did as well, except I used the pioneer 4 ohm sub and a RF amp. He too added a line out converter, so maybe his is able to handle the 8 ohm signal?

"Since the head unit uses a balanced output I decided to go with a line out converter to the front L and R mid/sub speakers for the new sub amp."
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Old Dec 27, 2010 | 09:05 AM
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The line out converter I have is PAC. I pulled the install manual online and went to the trunk and checked it out. It's wired correctly, however I did notice the two brown wires were grounded. Per the instructions, those two wires need only be grounded if there is no sound from the amp. So I ungrounded them to see what would happen, and the amp still played. So perhaps that was the problem. I'll keep in eye/nose on it.
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