Newbie 12V System |
Post Reply |
Author | |
Magicrook
New Member Joined: 08 December 2022 Status: Offline Points: 2 |
Post Options
Thanks(0)
Posted: 14 December 2022 at 4:42pm |
Hello lovely people
Me and my good friend plan on building our own cabinets next month. Everything will all be powered of a 180Ah(c20) 154Ah(c5) Battery. (I tried to figure out the 'c's but was not sure what applied to me. so far my thoughts ROAR 15" Sub HD15 Kick MT121 High end My questions are: Is this combination of cabinets a good plan for Reggae Dub and Hip Hop? What drivers and Amps should I be looking to power them meaning the battery will last a couple hours? and how do I cross them over with said amps and drivers. Much love Oscar |
|
studio45
Old Croc Joined: 16 October 2007 Location: United Kingdom Status: Offline Points: 3863 |
Post Options
Thanks(0)
|
The C rating describes how fast you can discharge the battery, expressed as a fraction of its capacity at that rate.
So for that battery, the C20 figure means this: if you discharge it at (180/20) = 9A or about 110 watts, it will have a theoretical maximum capacity of 180Ah, of which you will be able to use 90Ah without potential for damage to the battery. (10 hours run time) The C5 figure, similarly, means that if you discharge at (154/5)= 31A or about 370 watts, it will have a theoretical maximum capacity of 154Ah, of which you will be able to use 77Ah without potential for damage to the battery (2.5 hours run time). It's important to remember not to discharge lead-acid batteries past 50% if you want them to have a long life. Not that it doesn't happen quite a lot at the average 12v party when everyone gets a bit too well-refreshed to watch the voltage Lithium batteries, being capable of much higher discharge rates, can have a rating of 10C or even 20C, that's 10 or 20x the capacity figure rather than a fraction of it. When playing music, your average power draw will be around 12.5% of the peak figure. So a 1000 watt car audio amp is drawing more like 125w continuously. You would get a good long run time from such an amp on this battery - 8 hours or so.
|
|
Studio45 - Repairs & Building Commotion Soundsystem -Mobile PA
|
|
Post Reply | |
Tweet |
Forum Jump | Forum Permissions You cannot post new topics in this forum You cannot reply to topics in this forum You cannot delete your posts in this forum You cannot edit your posts in this forum You cannot create polls in this forum You cannot vote in polls in this forum |