Hey Guys! so I'm totally new to the DIY audio, and I'm thinking of doing a build pretty soon.
The plan is a battery powered boombox consisting of:
speakers:
1* Infinity REF1200S 12" 250w shallow sub
2* P.audio PHT-410 tweeters
2* Visaton BG-13 P full range speakers
Amps:
TAS5630 600w mono amp to drive the sub
Pioneer MVH-X380BT as head unit with amp for the rest.
the thing is, I really dont know what battery I would need, and/or power supply + charger.
anything else I have missed?
The plan is a battery powered boombox consisting of:
speakers:
1* Infinity REF1200S 12" 250w shallow sub
2* P.audio PHT-410 tweeters
2* Visaton BG-13 P full range speakers
Amps:
TAS5630 600w mono amp to drive the sub
Pioneer MVH-X380BT as head unit with amp for the rest.
the thing is, I really dont know what battery I would need, and/or power supply + charger.
anything else I have missed?
Decide on how large a 12V battery you can fit in. The larger the A-H rating,
the longer it will play. Then get a regular battery charger for that size battery.
okey, read at Accusafe.com that you should have a power supply installed too?
and how long does usually a 20ah battery play? thinking of a AGM battery.
would I need any filters or anything else?
There's no need of a power supply, since the radio normally works on a car battery.
Playing time will depend on volume, maybe 1-10 hours depending on the battery size.
Filters shouldn't be needed with a battery, but you could use a shunt capacitor.
Be certain to fuse the positive battery post directly before any other connections,
like in a car. Use a regular automotive style fuse. Batteries can explode if mistreated.
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SO, The calculation for run time is quite simple.
If you figure on 600W for the sub, 100W for the head unit (ball parks here).
That gives you 700W if you were to max things out.
700W / 12V gives you a maximum draw of 58A.
A 60Ah Battery would run that system at max volume for 1 hour.
An amp hour is equal to amps * hours.
SO, if you figure you'd be running that system at 1/3 of maximum as an average a 20Ah battery would run for about 1 hour, one third of 60 is 20.
Keep in mind that batteries that aren't intended for Deep Cycle will be damaged by running them to their rated depletion consistently.
I would suggest keeping the draw cycle down to 1/2 of the Ah rating.
SO, at 1/3 of the maximum system draw average and maintaining the minimum 50% rating draw that would mean you'd want to stop drawing on the 20Ah battery after only 30 minutes.
If you figure on 600W for the sub, 100W for the head unit (ball parks here).
That gives you 700W if you were to max things out.
700W / 12V gives you a maximum draw of 58A.
A 60Ah Battery would run that system at max volume for 1 hour.
An amp hour is equal to amps * hours.
SO, if you figure you'd be running that system at 1/3 of maximum as an average a 20Ah battery would run for about 1 hour, one third of 60 is 20.
Keep in mind that batteries that aren't intended for Deep Cycle will be damaged by running them to their rated depletion consistently.
I would suggest keeping the draw cycle down to 1/2 of the Ah rating.
SO, at 1/3 of the maximum system draw average and maintaining the minimum 50% rating draw that would mean you'd want to stop drawing on the 20Ah battery after only 30 minutes.
Haha f**kin hell... seems like a bad idea to use that amp then.. I'll need at least 4 hours playtime at half of max output. Any suggestions on an amp that manages to drive the sub fairly good?
For something REAL like what you are trying to do you will either need extremely efficient drivers or a HUGE battery.
No other way around it.
No other way around it.
The idea is a boombox with real sub wave bass. Something that is like a cervin wega xls. It should last at least 3-4 hours at battery, but be possible to plug into the wall.
I do have a cerwin vega xls 15s sub element in my garage. But I'm not sure how efficient it is. Might be easier to make it pkay than a car sub?
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