Reddit Reddit reviews 12V 110AH SuperBatt LM110 Deep Cycle Leisure Battery Caravan Motorhome Marine Boat

We found 1 Reddit comments about 12V 110AH SuperBatt LM110 Deep Cycle Leisure Battery Caravan Motorhome Marine Boat. Here are the top ones, ranked by their Reddit score.

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12V 110AH SuperBatt LM110 Deep Cycle Leisure Battery Caravan Motorhome Marine Boat
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1 Reddit comment about 12V 110AH SuperBatt LM110 Deep Cycle Leisure Battery Caravan Motorhome Marine Boat:

u/JT_3K · 1 pointr/diysound

I'm going to throw a slightly different perspective here. You're definitely going to want a well designed cab and I'm not your man to assist with that.

However, what I do know is the electrical side of it and can advise that a car amplifier is your most efficient route. Converting voltage is inefficient and simply not worth even trying. Your battery will be dead in minutes.

Specifically you're going to want a "Class D" amplifier if you're running on batteries. My money goes on Alpine as they're reliable, strong, clear and often cheap for what you get. Consider the MRV or PDX ranges particularly.

You'll want to decide if you want to go volume (=LOTS of batteries) and get a bigger amp or play it safe and get a smaller amp. I feel like the latter is a safer route but do remember that car amplifier outputs are measured at 14.4v and you'll only achieve ~85% of that with a battery on its own.

Once you assume a Class D amplifier is also 80% efficient you can start to guess at the length of time it'll run at full chat on your battery. Consider Alpine's MRV-M250. It's the smallest single channel I could find them offering at 250W RMS (@ 2 ohms, 14.4v). At 12v that's ~85% of that figure so 212.5W. 80% efficiency means that'll draw 270W. P=IV so P/V=I, 270W/12V=22.5A.

Using this web-based calculator you can see that even to get that to run for an hour, you're going to drain a 106AH "leisure" battery which (by the time you've rounded that up to the more standard 110AH battery size) is a whopping 350x175x190 (mm) and 22kg, not to mention £80/$101.

Saving you the math, the next biggest class D rated at 300W RMS total (75Wx4), the MRV-F300 drains 126AH!

If you do eventually decide to do so, make sure to use a couple of car speakers in series on it (to get 2 ohms). I rate Pioneer's low depth offerings or old JL kit for volume. You'll also want some more range so 6x9 might be an option.

Frankly though I can't see you lugging 35KG of audio around a festival!