fmedina Posted July 2, 2011 Report Share Posted July 2, 2011 I don't think the prime does put will get close. Look at the fuses. Quote Link to comment Share on other sites More sharing options...
252chevyboyz Posted July 2, 2011 Report Share Posted July 2, 2011 1000w RMS would have 100A worth of fuses right? Quote - 1997 Chevy Tahoe- Big 3 (1/0)- Dual Autocraft Batts- JVC KD-A315 HU- AQ 2200.1D- 18" AQ HDC3- Box w/ Removable Port (6ft^3 @ 36hz & 6.7ft^3 @ 42hz)- 39' 1/0 & 13' 2/0 Flex-A-Prene My Selling Feedback Build Log Link to comment Share on other sites More sharing options...
fmedina Posted July 2, 2011 Report Share Posted July 2, 2011 Right Quote Link to comment Share on other sites More sharing options...
252chevyboyz Posted July 2, 2011 Report Share Posted July 2, 2011 @autos: The Rockford amps comes with 3x30A fuses. So roughly 900w max. Pretty close to rated. I got this info off the original link in your first post. Just click Features & Specs and its listed under that Quote - 1997 Chevy Tahoe- Big 3 (1/0)- Dual Autocraft Batts- JVC KD-A315 HU- AQ 2200.1D- 18" AQ HDC3- Box w/ Removable Port (6ft^3 @ 36hz & 6.7ft^3 @ 42hz)- 39' 1/0 & 13' 2/0 Flex-A-Prene My Selling Feedback Build Log Link to comment Share on other sites More sharing options...
autos Posted July 2, 2011 Author Report Share Posted July 2, 2011 @autos: The Rockford amps comes with 3x30A fuses. So roughly 900w max. Pretty close to rated. I got this info off the original link in your first post. Just click Features & Specs and its listed under that and where can I get the crescendos online? Quote Link to comment Share on other sites More sharing options...
irpirate Posted July 2, 2011 Report Share Posted July 2, 2011 you guys are looking at the fuse ratings wrong. something i read on fusing. just for future references, a good spec to look at is the fuse rating. 40a x 5 40 amps * 5 = 200 amps 200 * 14.4 = 2880 2880 * .8 (typical class D efficiency) = 2304 Quote hiiiiiiii2002 4runner - buncha speakers n amps n shit (gone)1994 astro - more stuffzupdate: pretty sure all the pic links in the logs are broken lol. ma slop garb build log16 12's 4th order4runner rebuild in progressclickkk meeeee!!!! 4 18's 6th orderUBL - clickyhttp://www.youtube.com/yyj11589 lots of hater kids here. Pay no attention, they just want 89,000 watt subs for 3.50If you would have put a dc dustcap on it and called it lv your mom, they would all be in love Link to comment Share on other sites More sharing options...
homiewes Posted July 2, 2011 Report Share Posted July 2, 2011 (edited) you guys are looking at the fuse ratings wrong. something i read on fusing. just for future references, a good spec to look at is the fuse rating. 40a x 5 40 amps * 5 = 200 amps 200 * 14.4 = 2880 2880 * .8 (typical class D efficiency) = 2304 hmm your close.. try this.. I measure 12.8V, take 65% eff and my amp have two 30 amp fuse: 30A * 2 = 60A 60A + 1/3 = 80A (current point to blast fuse)(sinwave input-----squarewave output) Now we need to calculate the RMS output value ...we will use 60A value 60A * 12.8V = 768VA 768VA * 0.65 = 499 ...say 500Watt RMS output Edited July 2, 2011 by homiewes Quote My youtube channel, please subscribehttp://www.youtube.com/ballinblaza Link to comment Share on other sites More sharing options...
252chevyboyz Posted July 2, 2011 Report Share Posted July 2, 2011 Good catch there Pirate. That's a good tip. Also found this for Crescendo: http://www.crescendoaudio.com/home.php?cat=249&&sort=price&sort_direction=0 I have also seen some nice amps for sale here in the community might want to chech out the buyin section. Make sure to read the rules before posting tho. Link is below. http://www.stevemeadedesigns.com/board/forum/16-for-sale-car-audio-related-equipment-only/ Quote - 1997 Chevy Tahoe- Big 3 (1/0)- Dual Autocraft Batts- JVC KD-A315 HU- AQ 2200.1D- 18" AQ HDC3- Box w/ Removable Port (6ft^3 @ 36hz & 6.7ft^3 @ 42hz)- 39' 1/0 & 13' 2/0 Flex-A-Prene My Selling Feedback Build Log Link to comment Share on other sites More sharing options...
autos Posted July 2, 2011 Author Report Share Posted July 2, 2011 I emailed crescendo....but I also found this http://www.sonicelectronix.com/item_22707_Hifonics-HFi1500D.html Quote Link to comment Share on other sites More sharing options...
Dubpower Posted July 2, 2011 Report Share Posted July 2, 2011 you guys are looking at the fuse ratings wrong. something i read on fusing. just for future references, a good spec to look at is the fuse rating. 40a x 5 40 amps * 5 = 200 amps 200 * 14.4 = 2880 2880 * .8 (typical class D efficiency) = 2304 hmm your close.. try this.. I measure 12.8V, take 65% eff and my amp have two 30 amp fuse: 30A * 2 = 60A 60A + 1/3 = 80A (current point to blast fuse)(sinwave input-----squarewave output) Now we need to calculate the RMS output value ...we will use 60A value 60A * 12.8V = 768VA 768VA * 0.65 = 499 ...say 500Watt RMS output it is a simple maths formula which is average power = work done (unit of work is the the Joule) divided by time taken (unit of time is the second) the unit of power = Joule/second (J/s) Si unit of power is watt (w) = 1 J/s so what we are looking for her is work done = force x distance to give us the Joule. then we can work out how many watts it putts out which is power = work done/ second will give you how many watts anything is putting out Quote Link to comment Share on other sites More sharing options...
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