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Stereo system question

Old 03-27-2024, 02:48 PM
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Originally Posted by Joeyboost
I want to run more than 4 speakers off my stereo system, I currently have 1 - 2channel amp powering two subs and 1 4 channel amp powering 4 6" round speakers.

What is needed to run more 6" speakers including tweeters off 1 head unit? I see all these boats with 8-10+ speakers in them, how do they power all those speakers without having Ohm issues?
What amps do you have and what speakers?

Most amps are 2 ohm stable, and most speakers are 4 ohms per speaker.

That means, in general, you could run 2 speakers per channel wired in parallel (all reds and blacks together)
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Old 03-28-2024, 12:09 PM
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Right now their not super quality amps it the Skar-marine amps. I plan to upgrade them soon. The speakers are Skar as well except the 10" subs which are Fusion. What is a good quality marine amp? Back in the day when I had big stereo's in cars it was JL or Phoenix Gold amps I ran.
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Old 03-28-2024, 12:44 PM
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FWIW: I'm running a mix of (8) 6.5's and 7.7s off the 4 channels of a 900/5 JL amp.......the additional speakers help fill the space and it works well. (2) 10in subs off the 500 sub channel. Everything is JL Audio.
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Old 03-28-2024, 05:00 PM
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SKAR amps and speakers have a good following, they are actually surprisingly good and consistently get good reviews in the stereo magazines...their amps actually outperform their stated specs. I say because you might go drop big bucks on a 'name brand' amp only to be disappointed. JL Audio makes good amps and speakers, though I took out all my JL amps and replaced them with Audio Control amps (one 1/800 watt sub amp and one 4/800 amp, along with a 500 watt Kenwood amp. Crutchfield is or was running a special on JL stuff recently.
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Old 03-30-2024, 07:33 AM
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Easiest way would be replace the 4 channel amp with the JL M800/8 amp. It can supply 8 speakers with only 2 RCA from the head unit. Quality amp with good clean signal.

The biggest concern would be the size of the power and ground cables feeding the amp. Would need a good 4 AWG cable to feed it.
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Old Today, 05:25 PM
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Good marine amp brands: Matt's Audio, Roswell, JL AUDIO, Wet Sounds, Rockford Fosgate, Kicker, Clarion, Bluave.

my top choices would be JL Audio, RF, and Wet Sounds.

You need more from the sounds of it. When you place two 4 ohm speakers on one channel (2 ohm load at the amp), they both get half of the rating at 2 ohms. For instance, JL XDM 800/8, 100 watts at 2 ohms per channel, with two speakers on each channel, each speaker would get 50 watts.

There are some gotchas to this marine audio stuff. Amps are typically most expensive part of the whole affair, aside from labor.
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