Stereo Optimization

[moparsigfan]

So I have discovered that two of the three amps powering my speakers are not marine grade and I would like to change them out. Looking for recommendations.
Speakers are all JL Audio MX (4 x 7.7” MX Tower units, 6 x 6.5” MX cabin units and 1 x 10” MX subwoofer).
Right now I have a JL Audio M400/4, HX300/1 and a Kicker DXA250.4.
I am wondering whether I should just switch the Kicker for another M400/4 and the HX300/1 for an MX300/1.
All of this is being driven by a Fusion MS-RA205 which I wouldn’t mind upgrading also.
Opinions please!


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[mor3naz0]

Since you have JL speakers, why don’t you go with the MHD range of JL amps.
I have 5 of these, there small, class D amps (efficient use of voltage to amps) and can be stacked if space is an issue.
http://intl.jlaudio.com/marine-audio-amplifiers-mhd



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[moparsigfan]

Looking at those I could run a single MHD600/4 to power my tower speakers and sub, and keep my M400/4 to power the cabin speakers as they can only handle up to 125 watts /channel. But I am guessing that JL’s NexD technology in the M400/4 isn’t true Class D like the MHD600/4.


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[mor3naz0]

No it’s not.
Consider the MHD900/5 for the tower sub combo.
One channel is 500w RMS for the sub and you can bridge the 4 channel into two for the towers.
That’s the set up I had in my old boat with the 900


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[mor3naz0]

https://uploads.tapatalk-cdn.com/20180924/bf8764a11ec3297c75b62f02e6a180e4.jpg
My amp board :)


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[moparsigfan]

What distribution blocks are you using??


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[mor3naz0]

Wetsounds power distribution boards. I just went on their site and can’t find them.
Plenty on amazon or crackbay no doubt :)


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[MLA]

The "M" series JL amps are class-D.

If you simply want to replace 2 non-marine, with marine, then remove the 300/1 and 250.4 for a single JL M700/5

In addition. I would move the in-boats to the M700/5 with the woofer, and the towers to the existing M400/4. This does two things. 1) splits the 2 hardest played zones in a boat, to two difference amps. 2) makes it easier to configure the amp inputs.

[moparsigfan]

The "M" series JL amps are class-D.

If you simply want to replace 2 non-marine, with marine, then remove the 300/1 and 250.4 for a single JL M700/5

In addition. I would move the in-boats to the M700/5 with the woofer, and the towers to the existing M400/4. This does two things. 1) splits the 2 hardest played zones in a boat, to two difference amps. 2) makes it easier to configure the amp inputs.

I definitely want to reduce the amplifier count as the current amp board is a mess having three amps wired the way they are.

The M400/4 won’t max out the tower speakers capabilities, but I’m not out there blasting tunes to the shore all the time!!

I appreciate your feedback.


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[moparsigfan]

Wetsounds power distribution boards. I just went on their site and can’t find them.
Plenty on amazon or crackbay no doubt :)


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[emoji3]


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[MLA]

The M400/4 is capable of 75W rms to 4 speakers. Honestly, id like to double that for 7.7 tower speaker. So, no where near over powering the 7.7.

Worth noting though, the HX series was a power sports amp, so well suited for the marine life.

I think the tower pods are driven by the DXA250.4, so moving them to the M400/4 will be a 2X increase in wattage.

Moving the in-boats and woofer to the M700/5 will be the same wattage/output for the them as they are currently supplied.

[padge]

Better to overpower than to underpower in my opinion.


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[moparsigfan]

Better to overpower than to underpower in my opinion.


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Just trying to stick within JL’s recommended amp output for the speakers I have, I can always turn down the gain if I have an amp that can overpower the speakers!


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[padge]

Best to keep gain as low as possible for me. The more gain, the more interference/noise.


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