Miguels Posted December 11, 2014 Report Share Posted December 11, 2014 Not all bigger alts need a smaller pulley, my DC power alt's pulley is the same size as my stock alt. As far as alt's go hairpin 6 phase is where it's at. true.. hairpin or bust.. i hate my singer alt for that reason. makes shit power at 650rpm. wanted hairpin but the case i need does not allow it and i needed 350a for the DC5k my logshttp://www.stevemead...-my-new-set-up/my blow through loghttp://www.stevemead...future-updates/ 96 ss http://www.stevemeadedesigns.com/board/topic/164094-96-impala-ss-build/ Link to comment Share on other sites More sharing options...
Guest Posted December 11, 2014 Report Share Posted December 11, 2014 OP thats because in most alternators when an alt is deigned to kick out 300+ amps at full rev, it puts out proportionally less at idle when compared to lets say a 240A version. Its going to have a steeper roll off below max RPM than it's lower rated counterpart. Portionally less meaning that the 320amp alt puts out more power than the 240amp alt at idle? Mechman told me the difference was negligible. I'm pretty sure if there was any reason to buy the Mechman 320 alt in my case they would have definitely to to sell me the more expensive alt. And there is no doubt in my mind that the person that told you this is correct. The idle output of those 2 alternators is probably not enough to make a difference that you will hear in your system. Ok that makes sense. I guess I am just confused when you say I need a solid electrical with a powerful alternator. I forget the exact wording you used so forgive me. Does this mean I need an alt that is stronger than the mechamn 240amp. I mean what other options do I have? Link to comment Share on other sites More sharing options...
Broke_Audio_Addict Posted December 11, 2014 Report Share Posted December 11, 2014 You'll be fine with the with the 240. That being said a lot of people's definition of "music" is a clipped 30 hz sine wave with some 80 IQ knuckle head grunting about committing crimes and his genitals. Link to comment Share on other sites More sharing options...
rockFord_Expedition Posted December 11, 2014 Report Share Posted December 11, 2014 OP, sorry for rambling so much, but I really enjoy these types of conversations. So to answer your question, your system needs approx 149A continuous to run at full potential on music. With an OEM alt rating of 60A you should allow for about 51A for your vehicle at full draw, like head lights, heater, etc.. 149 + 51 = 200 If you had 200A of current available at all times at approx 14V then your vehicle and your system would be happy with or without a 2nd or upgraded battery. Old School/New School RF Build March 2015 SOTM Winner How to crimp large wire Link to comment Share on other sites More sharing options...
Guest Posted December 11, 2014 Report Share Posted December 11, 2014 OP, sorry for rambling so much, but I really enjoy these types of conversations. So to answer your question, your system needs approx 149A continuous to run at full potential on music. With an OEM alt rating of 60A you should allow for about 51A for your vehicle at full draw, like head lights, heater, etc.. 149 + 51 = 200 If you had 200A of current available at all times at approx 14V then your vehicle and your system would be happy with or without a 2nd or upgraded battery. But, at idle, would the 240amp alt be enough by itself? I feel like this is where the upgraded battery would be extremely useful. Link to comment Share on other sites More sharing options...
Broke_Audio_Addict Posted December 11, 2014 Report Share Posted December 11, 2014 Get the alt and at least an agm batt for under the hood. That being said a lot of people's definition of "music" is a clipped 30 hz sine wave with some 80 IQ knuckle head grunting about committing crimes and his genitals. Link to comment Share on other sites More sharing options...
SIDE SHOW Posted December 11, 2014 Report Share Posted December 11, 2014 Rockford_expedition you should read from the first post, he said he is upgrading his alt first..... what the hell are you on about Link to comment Share on other sites More sharing options...
rockFord_Expedition Posted December 11, 2014 Report Share Posted December 11, 2014 OP thats because in most alternators when an alt is deigned to kick out 300+ amps at full rev, it puts out proportionally less at idle when compared to lets say a 240A version. Its going to have a steeper roll off below max RPM than it's lower rated counterpart. Portionally less meaning that the 320amp alt puts out more power than the 240amp alt at idle? Mechman told me the difference was negligible. I'm pretty sure if there was any reason to buy the Mechman 320 alt in my case they would have definitely to to sell me the more expensive alt. And there is no doubt in my mind that the person that told you this is correct. The idle output of those 2 alternators is probably not enough to make a difference that you will hear in your system. Ok that makes sense. I guess I am just confused when you say I need a solid electrical with a powerful alternator. I forget the exact wording you used so forgive me. Does this mean I need an alt that is stronger than the mechamn 240amp. I mean what other options do I have? Although I can't personally vouch for Mechman's alts, I wouldn't hesitate to run his products because many reputable people stand by him. If his 240A alt will give you at least 200A when you need it under whatever conditions, then I would say it will be just fine. I've heard good things about Singer, and can speak from 1st hand knowledge about the quality of DC Power alts. Old School/New School RF Build March 2015 SOTM Winner How to crimp large wire Link to comment Share on other sites More sharing options...
SIDE SHOW Posted December 11, 2014 Report Share Posted December 11, 2014 pretty sure we all said that page one Link to comment Share on other sites More sharing options...
Guest Posted December 11, 2014 Report Share Posted December 11, 2014 OP thats because in most alternators when an alt is deigned to kick out 300+ amps at full rev, it puts out proportionally less at idle when compared to lets say a 240A version. Its going to have a steeper roll off below max RPM than it's lower rated counterpart. Portionally less meaning that the 320amp alt puts out more power than the 240amp alt at idle? Mechman told me the difference was negligible. I'm pretty sure if there was any reason to buy the Mechman 320 alt in my case they would have definitely to to sell me the more expensive alt. And there is no doubt in my mind that the person that told you this is correct. The idle output of those 2 alternators is probably not enough to make a difference that you will hear in your system. Ok that makes sense. I guess I am just confused when you say I need a solid electrical with a powerful alternator. I forget the exact wording you used so forgive me. Does this mean I need an alt that is stronger than the mechan 240amp. I mean what other options do I have? Although I can't personally vouch for Mechman's alts, I wouldn't hesitate to run his products because many reputable people stand by him. If his 240A alt will give you at least 200A when you need it under whatever conditions, then I would say it will be just fine. I've heard good things about Singer, and can speak from 1st hand knowledge about the quality of DC Power alts. Awesome! So are DC alt more expensive than Mechman. If I remember correctly, you have to submit a form on their website right? Btw, thanks for all the help! Everyone! I really appreciate it! Link to comment Share on other sites More sharing options...
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