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Old 03-20-2017, 02:00 PM   #1
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I recently bought a boat that has 4 wetsounds sw-65i and 1 wetsounds sw-10fa subwoofer. There is a JL mhd600/4 amp powering this system. I don't like the bass output. The 4 speakers are wired to the rear 2 channels and the sub is wired using just 2 (+ -) wires of the 4 available slots on the front 2 channels. Could this be made to perform better? I am willing to get a new amp if that is what it takes. Thanks for the help.

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Old 03-20-2017, 02:30 PM   #2
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There is no way that you can get more performance from those same speakers with any other amplifier. So save your money. The JL Audio MHD600/4 has twin power supplies and is strictly regulated. It's power is at the top of the speaker's thermal rating and this amplifier is one of a select few that can deliver its rated power with a lower supply voltage, making it substantially more robust than its ratings would suggest. One concern would be if the subwoofer version is 2-ohm versus 4-ohm....because you cannot bridge into a 2-ohm load. From there it would be a matter of bad installation execution, bad subwoofer location, bad tuning, etc. Regardless of brand or model, an infinite baffle 10" (which you have) has limitations as compared to larger subwoofers or subwoofers that are intended for and used in enclosures. So hopefully this isn't an issue of expectations and instead can be fixed with some tweaking.
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Old 03-20-2017, 08:15 PM   #3
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Thanks David , I always like reading your responses, even though they are above my head most of the time. So in your opinion, I would have no benefit going with a jl 900/5 so I can control the sub separately. Thanks again.
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Old 03-20-2017, 09:01 PM   #4
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Quote:
Originally Posted by tdk72 View Post
Thanks David , I always like reading your responses, even though they are above my head most of the time. So in your opinion, I would have no benefit going with a jl 900/5 so I can control the sub separately. Thanks again.
You absolutely can control the subwoofer separately with what you have. Subwoofer run off the rear channels in bridged mode. Two pair 6.5" coaxials run parallel of the front stereo channels. Add a JL Audio HD-RLC remote level control to the port provided with the appropriate setting on the configuration switch.
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Old 03-20-2017, 09:08 PM   #5
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Quote:
One concern would be if the subwoofer version is 2-ohm versus 4-ohm....because you cannot bridge into a 2-ohm load.
There is a sticker on the back of your sub showing its model. If you post it here, David could see if you have the 4ohm or 2ohm version and be abel to tell if it was wired correctly..
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Old 03-20-2017, 09:18 PM   #6
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As per David's response, he helped me greatly when I was purchasing an amp and some speakers last year. The man knows his stuff.

This is a procedure to tune the JL amp
https://jlaudio.zendesk.com/hc/en-us...-Setting-Guide

Whether or not you have a 2 or 4 ohm sub, it should say on the sticker, if not you can find out with an ohm meter. My guess would be that it is a 4 ohm sub as there is only one, but you never know. If 4 ohm, two of the amp channels should be bridged to double the wattage going to the amp.
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