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slaz
Old Croc Joined: 27 November 2009 Location: London E2 Status: Offline Points: 2713 |
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Something quite a few people overlook is :- Nearly all car amp power specs are quoted at 14.4V - but - depending on the internal DC-DC up-conversion - in a cyclic battery scenario, the average voltage across the discharge cycle will be about 12V - and thats a drop of about 30% ..... unless the internal DC rails are regulated. |
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REMEMBER....POLITICIANS AND DIAPERS SHOULD BE CHANGED OFTEN AND FOR THE SAME REASON
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Ganon
Registered User Joined: 07 May 2014 Location: Denmark Status: Offline Points: 114 |
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I use a 8604 in a setup with two Cubo 15 parallel down to 4 ohm and bridge into the amp, and two EV SX200 in the two remaining channels, and it does play loud.
At Roskilde festival we played about 150-200 people up, and thats with many other big systems around the area. And the draw is about 4 A. |
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studio45
Old Croc Joined: 16 October 2007 Location: United Kingdom Status: Offline Points: 3863 |
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I think most car amps now available have internal DC-DC conversion, and you'd kind of hope it is regulated as the bus voltage varies wildly as standard in a car (12.8v with engine off and full battery, 13.8-14.4 with it on, higher momentary peaks when you turn off the headlights or AC) - the amp's got to work in all those scenarios.
So at 12.0v average they should just draw more current and still have the same output power, more or less; obviously this will place extra thermal stress on some components, so there may still be issues related to that.
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Studio45 - Repairs & Building Commotion Soundsystem -Mobile PA
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SamV
Old Croc Joined: 21 October 2008 Location: London Status: Offline Points: 8707 |
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Most aren't regulated sadly.
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