Brandon15zzz Posted December 19, 2012 Report Share Posted December 19, 2012 2600 farad capacitor bank. Quote Vehicle: 1995 Impala SSHead Unit: Pioneer AVH-P4400BHMids And Highs: (still deciding)Batteries: 1 Deka Group 34 Time to make a race car.My Build Log: Solo X 12"http://www.stevemead...don15zzz-build/My Build Log: DC lvl 4 xl 15"http://www.stevemead...don15zzz-build-My Wall Build Log: 4 Lanzar 15's/ 3k+ RMShttp://www.stevemead...t-by-techforce/My Feedback:http://www.stevemead...1 Link to comment Share on other sites More sharing options...
Blackedout Posted December 19, 2012 Report Share Posted December 19, 2012 I use flux capacitors. Just like in back to the future. . Lol got jokes huh It was the only way I could get 2500 farads of cap in my cap bank. Good news is I'm only running 3kw. You would need about 5.275 of these bad boys in your rig. Haha... Just messin with you ray. Quote Trunk Build Log Link to comment Share on other sites More sharing options...
Ninja_v1.0 Posted December 19, 2012 Report Share Posted December 19, 2012 (edited) waiting for the link to buy the book to get the answer Edited December 19, 2012 by sensai_v3.6 3 Quote Link to comment Share on other sites More sharing options...
snafu Posted December 19, 2012 Author Report Share Posted December 19, 2012 Mr. D - I was waiting for your input, what took ya' so long? Now, let's say that we were playing music at clipping with our 5kw system . . . think 20ms or so on peaks. How's that math work? 2 Quote Tony Candela - SMD Sales & Marketing Email me at [email protected] to learn about becoming an SMD Partner! Link to comment Share on other sites More sharing options...
ric006 Posted December 19, 2012 Report Share Posted December 19, 2012 i would say for a car system under 1500 rms you can use a battery and a capacitor that was the old school way now days as we progressed you have to upgrade your alternator put extra batteries in and more Quote Link to comment Share on other sites More sharing options...
mikelbolton Posted December 19, 2012 Report Share Posted December 19, 2012 i would say for a car system under 1500 rms you can use a battery and a capacitor that was the old school way now days as we progressed you have to upgrade your alternator put extra batteries in and more No offense, but I think you're missing the point. The power that a cap can put out is limited to the amount of potential difference in the power that the cap contains and the input voltage that the amp is getting. A cap in itself will not contain enough energy to provide ample power to offset the potential difference for enough length of time to make a difference. A battery is exponentially more powerful than a cap, and therefore can offset potential differences in the input voltage. Nothing is going to completely overcome an inadequate charging system, although a battery bank can give you reserve capacity to lessen the potential difference until the electrical demand drops low enough that the alternator can meet the demand and ultimately recharge the batteries. Conclusion: 1.alternator with enough headroom is a must 2. followed by supporting mods (big 3, proper grounds, etc) 3. battery bank large enough to support the length of time that playing at volumes that require more power than charging system can produce Unless, you're able to make room and pay for 2500(1F) capacitors, to be used in 30 second increments (sorry, no playing full songs) Thanks Tony D Quote 2011 Chevrolet Aveo(click for build log)Clarion NX-603SKAR 4500.1DIraggi 320A alt Knukonceptz 1/0 Kollosus Fleks Cable8 AWG Sky High Car Audio OFC 1/0- Sky High Car Audio 2- XP3000 XS Power BatteriesSMD VM-12- 12" Ascendant Audio Mayhems Toolmaker Fuse block Toolmaker Bus Bars (Last Season scores 1-15" Mayhem) 145.2 dB- Sealed @ NSPL World Finals (9/28/14) 148.1 dB- Hardcore @ NSPL World Finals (9/27/14) 150.23-- Hardcore on 4500 Watts!!!! New Build (2015, 2-12" Mayhems) 146.9- Sealed on dash 149.6 dB- Hardcore in Kick (No wall 0-24" Hardcore) Link to comment Share on other sites More sharing options...
TonyD'Amore Posted December 19, 2012 Report Share Posted December 19, 2012 (edited) Mr. D - I was waiting for your input, what took ya' so long? Now, let's say that we were playing music at clipping with our 5kw system . . . think 20ms or so on peaks. How's that math work? Well subwoofer amplifiers are what we are talking about here, and 20ms isn't bass. Just one cycle of 50Hz is 20ms. I measured a kick drum back in the Rockford Days to be well over 100ms. I'd go as far to say, as far as modern synthetic compressed bass, anything less than a second of storage is fairly meaningless. Edited December 19, 2012 by TonyD'Amore 3 Quote Link to comment Share on other sites More sharing options...
Sanitarium Posted December 19, 2012 Report Share Posted December 19, 2012 Corrected version: J=(CV^2)/2 (J= joules, C=capacitance, V=voltage) for a 1 farad capacitor on a system charging at 14.2 (voltage = random number somewhere around normal car voltage I pulled out my ass for the sake of this post) J = 1 x (14.2x14.2) / 2 ---->snip<----- So who's buying me a 2500 farad capacitor bank? ... OUCH. thanks for the correction and further proving my point of how worthless caps are for guys like us. :cheers: 2 Quote Link to comment Share on other sites More sharing options...
IH8PunkRok Posted December 19, 2012 Report Share Posted December 19, 2012 Since the smart guys are in here I'll ask this question. How do batteries interface with caps? Considering the low esr wouldn't a battery see a cap not at potential voltage as a short circuit? throw some more numbers at me in a realistic situation like above Quote -Matt2005 Dodge Magnum RTJVC KD-AVX1 2 PPI S580.2 Obsidian Audio ST1 Horn Tweeters PRV 8MB450s Audio Legion 3500.1D 2 RE MT 18s 360 ah LiFePO4 BatterySHCA 2/0 155.2 @ 29 hzKicker CVR 15's buildDD 3512e buildMini T-Line Build(6) 8s BuildNightshade 15s Wall BuildMagnum AB XFL 12s BuildNewest Magnum Build Link to comment Share on other sites More sharing options...
poorfish88 Posted December 20, 2012 Report Share Posted December 20, 2012 Mr. D - I was waiting for your input, what took ya' so long? Now, let's say that we were playing music at clipping with our 5kw system . . . think 20ms or so on peaks. How's that math work? Well subwoofer amplifiers are what we are talking about here, and 20ms isn't bass. Just one cycle of 50Hz is 20ms. I measured a kick drum back in the Rockford Days to be well over 100ms. I'd go as far to say, as far as modern synthetic compressed bass, anything less than a second of storage is fairly meaningless. Did you leave Rockford cause they wouldn't stop selling useless caps? I kid I kid Quote Link to comment Share on other sites More sharing options...
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