Posted May 12, 200619 yr Although I'm not worried about buying an amp with enough power (bc I buy quality gear) I'm still unsure how efficient an amp really is. My really old PPI PC 2150 A/B class says in the manual something like 70% efficient which is better than many class d amps now (I read something about the JL 500/1 being about 50% effiencent.) Anyone really know how efficient their amp is or how I can find out without buying one?PS I have a 06 Toyota Highbrid and I'm thinking that the normal 12v system is going to get taxed pretty hard with a moderate system in there. My system will be pair of 6.5's up front (likely XR's or Mpyre's) powered by my PPI PC2150Single SS RLP 12 in a ported box (hopefully) but I want to converve spaceAnyone know if the normal 12v electrical charges off of a typical alternator and goes straight to the 12v batt, or does the big alternator that charges the electric motor bat also charge the 12v batt. I would think this would make a huge difference. I really don't want to spend a bunch of money on a full on charging system and more batsthanks in advance
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