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<blockquote data-quote="earleyksig" data-source="post: 8588047" data-attributes="member: 673496">This question is about my boat but am thinking the same principles apply. I&#039;ve got a JL Audio XD700/5v2 and Kenwood KMR-550U receiver which has 3 sets of 2.5-volt preouts. I&#039;m pushing 6 JL coaxial and 2 JL 8w3s and everything works flawlessly. Now to my issue...All six speakers are inside the boat and you have to turn it up fairly loud to enjoy music while in the water. Looking for an inexpensive solution, I bought a Boss MCBK400 system which has two weatherproof speakers and a small amp. The issue I have is the JL amp doesn&#039;t have any preamp outputs. I first tried a pair of y-adapters and split the rear output on the receiver to feed channels 3/4 on the JL and the Boss amp. When doing this, the signal was extremely weak and I had to crank the volume on the boss speakers which introduced a ton of noise. As a workaround, I used a 3.5mm splitter which I connect to my phone and feed both the aux inputs on the receiver and the Boss amp. This solution provides a good, noise free, signal but isn&#039;t ideal as I have to switch things around every time I want the Boss speakers to play. I thought about trying a cheap ground loop isolator but have always looked at those as a bandaid approach. I also don&#039;t want to degrade the quality of my existing system. I should also mention I&#039;m using a pair of JL interconnects so I don&#039;t think that&#039;s the issue. However, y-adapters are cheap. Any ideas?Sent from my SM-G930V using Tapatalk</blockquote>

[QUOTE="earleyksig, post: 8588047, member: 673496"] This question is about my boat but am thinking the same principles apply. I've got a JL Audio XD700/5v2 and Kenwood KMR-550U receiver which has 3 sets of 2.5-volt preouts. I'm pushing 6 JL coaxial and 2 JL 8w3s and everything works flawlessly. Now to my issue... All six speakers are inside the boat and you have to turn it up fairly loud to enjoy music while in the water. Looking for an inexpensive solution, I bought a Boss MCBK400 system which has two weatherproof speakers and a small amp. The issue I have is the JL amp doesn't have any preamp outputs. I first tried a pair of y-adapters and split the rear output on the receiver to feed channels 3/4 on the JL and the Boss amp. When doing this, the signal was extremely weak and I had to crank the volume on the boss speakers which introduced a ton of noise. As a workaround, I used a 3.5mm splitter which I connect to my phone and feed both the aux inputs on the receiver and the Boss amp. This solution provides a good, noise free, signal but isn't ideal as I have to switch things around every time I want the Boss speakers to play. I thought about trying a cheap ground loop isolator but have always looked at those as a bandaid approach. I also don't want to degrade the quality of my existing system. I should also mention I'm using a pair of JL interconnects so I don't think that's the issue. However, y-adapters are cheap. Any ideas? Sent from my SM-G930V using Tapatalk [/QUOTE]

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