Question about Golf
Just had a look at both amp and sub on the JL Audio website. The amp runs from 1.5-4ohms. 4ohms at 14.5V. The sub is running dual 4 ohms coils. That's what the D-4 means. So should be an easy set up. The amp has two mono outputs, so one for each coil. It looks like the perfect wattage to run the sub real nice.
Web page for amp: http://mobile.jlaudio.com/products_amps.php?amp_id=439
Web page for sub: http://mobile.jlaudio.com/products_subs.php?series_id=18
Posted on Nov 19, 2008
Golf carts do not have a charging system. If you are going to use battery power only, why not just add (1) 12V car battery instead of (2) 8V??
MA Audio runs (ran) their bench tests @ 17V. All the power ratings advertized are at 17V.
The power supply for the hk4000D is unregulated. So the more voltage = more power.. 8V-16VDC.
Don't expect the amplifier to work for very long however. the current drain on a class D amplifier is huge. There are no on-board fuses protecting the power supplies, so be sure to have at lease a 150A power line fuse.
With 150A current draw - even with the amplifier at 1/2 gain - expect to get 10.6 minutes of listening time from your 16 volts before recharging - also note, the amplifier MUST see 8V to turn on, there is a built-in voltage sensor that will shut down the amplifier if voltage is too low.
Posted on Jan 23, 2009
The voltage should be above 37 volts if you have 6 volt batteries. This must be measured under load. A simple voltage check is useless. If the batteries are over 6 years old, they are probably in need of replacement.
Posted on Apr 21, 2010
never leave charging all the time you want to charge it every 6 hrs of running time to let your batterys cycle down. it would be the same if you charge your cell phone everytime you make a call if you cant keep track of it get a state of charge its a volt metter like a gas gauge for the batterys if you do it my way you will get more run time and your batterys will last around 10 yrs if keep doing it your way them about a couple yrs on them
Posted on May 15, 2012
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