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Author Thread: Need 100w x 4 <$300 for 105a alternator
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David Fleisch
Bronze Member
Username: Dchrsf

Post Number: 17
Registered: Feb-07
Posted on Sunday, March 18, 2007 - 10:15 pm:    Edit Post
I am planning to buy the JL XR 6.5" Components http://www.sonicelectronix.com/item_1607.html and I want to get a 4 channel amp to power them and my rear 6x9s.

I will use a front fill by fading mostly to front, but I still want rear for when friends are in car and dont want them to break up at high volumes compared to front 6.5" comps. They will be in kick panels with the tweets near the side mirrors inside.

Which one out of these I have chosen would provide the wattage I need while not drawing too much amprage (105a alternator). I will have the 4ch and a infinity reference 611a (650wrms @ 2ohm to my sub).


Some are underrated I hear so I'm including some amps rated @ lower wattage 4ohms.

http://www.sonicelectronix.com/item_8014.html - Infinity Reference 7541a
http://www.sonicelectronix.com/item_7044.html - Rockford Fosgate Punch P450.4
http://www.sonicelectronix.com/item_7474.html - Eclipse EA4000
http://www.sonicelectronix.com/item_6718.html - Precision Power PPI A600/4
http://www.sonicelectronix.com/item_2791.html - JL Audio e4300
http://www.sonicelectronix.com/item_7733.html - Rockford Fosgate Punch P8004
$300 max budget, but lower the better. This is my first system. I was looking to get the infinity or RF 450.4


Thanks!
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Oleg
Silver Member
Username: Oleg

Santa Monica, CA
USA

Post Number: 655
Registered: Nov-04
Posted on Sunday, March 18, 2007 - 11:16 pm:    Edit Post
Eclipse or the JL amp. That JL amp will actually match your components perfectly @ 70W rms per channel. The eclipse is also a nice amp.
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M.S.
Silver Member
Username: Nd4spd18

Southeast PA

Post Number: 957
Registered: Jul-06
Posted on Monday, March 19, 2007 - 12:39 am:    Edit Post
Efficiency doesn't vary much among most class AB amps. Most are around 60%. A 100x4 amp can draw about 45 amps of current at full power.


And Oleg is right on with the amp recommendations.
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