BigManAC Posted October 5, 2014 Report Share Posted October 5, 2014 Right now I am running a SQ2200 (sub) and a MB Quart 800.4 (mids/highs) off of a stock 120 amp alternator. I have the Big 3 done with 1/0 and a XS Power D3400 up front. I was looking at 220 amp alts and was wondering if it would make a difference with my system. TIA 2001 Saturn L200-Sony MEX-BT4100PFRONT STAGE:- (4) Crescendo PWX 6- Cadence XA250.2SUB STAGE:-Fi Audio BL 15 (Sealed Off)-Crescendo BC2kELECTRICAL:- Singer 240A alt - XS Power D3400- SkyHigh OFC power/speaker wire- Big 3 with SkyHigh 0gaugeBuild Log: Click HereScores: 146.5db @ 29hz Outlaw Link to comment Share on other sites More sharing options...
RainStryke Posted October 5, 2014 Report Share Posted October 5, 2014 Have a few questions: What impedance are you running to your amps? What makes you think you need a better alternator? Just curious. With your big 3 upgrade, did you ground your alternator to your battery? Link to comment Share on other sites More sharing options...
bcbrassard Posted October 5, 2014 Report Share Posted October 5, 2014 Considering your cars probly using half the amps the alt makes it never hurts to have reserve power on hand. Alts run about $400ish and then an extra battery and your system will shine. Amps will have all the power they need to make power and system might sound better, amp life last longer, ect. I would if it was my set up. Link to comment Share on other sites More sharing options...
BigManAC Posted October 5, 2014 Author Report Share Posted October 5, 2014 Have a few questions: What impedance are you running to your amps? What makes you think you need a better alternator? Just curious. With your big 3 upgrade, did you ground your alternator to your battery? My amp is running at 1 ohm (or .7) and going by VxA=W my 120amp at 14.4v would be around 1700 watts which is less than my 2200 watt amp. No. the alt is grounded to the engine block which is then grounded to both the chassis and battery. 2001 Saturn L200-Sony MEX-BT4100PFRONT STAGE:- (4) Crescendo PWX 6- Cadence XA250.2SUB STAGE:-Fi Audio BL 15 (Sealed Off)-Crescendo BC2kELECTRICAL:- Singer 240A alt - XS Power D3400- SkyHigh OFC power/speaker wire- Big 3 with SkyHigh 0gaugeBuild Log: Click HereScores: 146.5db @ 29hz Outlaw Link to comment Share on other sites More sharing options...
Kranny Posted October 5, 2014 Report Share Posted October 5, 2014 your soundqubed wont be outputting 2k all the time. if you're dropping into the low 12's, think about either getting a mechman or singer alt, or turn the volume down. Link to comment Share on other sites More sharing options...
RainStryke Posted October 5, 2014 Report Share Posted October 5, 2014 You should ground your alternator directly to the battery, it helps. Since the alternator's negative current has to go through the engine block to get to the battery. I just switched my chassis ground to my alternator and it helped a ton. If your running that much power, then yeah... You will want a high output alternator. Link to comment Share on other sites More sharing options...
bcbrassard Posted October 5, 2014 Report Share Posted October 5, 2014 I checked out your build log and you have done a ton of work to your system upgrading everything(more than once like most of us do) and I would have figured you would have thought to spend the extra coin to get a HO alt a while back. System and work looks great, Contact Singer for a quote! Happy as hell I got mine from him. 200+ alt and I am running 3k off it and extra Batts. voltage holds way strong! Link to comment Share on other sites More sharing options...
RainStryke Posted October 5, 2014 Report Share Posted October 5, 2014 +1 on that Singer Alternator Link to comment Share on other sites More sharing options...
Broke_Audio_Addict Posted October 5, 2014 Report Share Posted October 5, 2014 You should ground your alternator directly to the battery, it helps. Since the alternator's negative current has to go through the engine block to get to the battery. I just switched my chassis ground to my alternator and it helped a ton. If your running that much power, then yeah... You will want a high output alternator. You should have both grounds not one or the other. 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...
TRON Posted October 5, 2014 Report Share Posted October 5, 2014 Your system will only get better with more electrical upgrades...so yeah get a bigger alternator. Avalanche Alpine Type S comps Alpine Type S 10'' Alpine MPR-F300 Alpine MRX-M50 Mechamn 270 XS Power d3400s Link to comment Share on other sites More sharing options...
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