EpicMango Posted January 31, 2012 Report Share Posted January 31, 2012 (edited) So here's what I'm stuck deciding. I have a stock 94 accord, with a stock 80 (eighty) amp alternator, 18 years old. My planned build is a single Skar VVx15 15' Sub with an Audiopipe mini 1000 watt amp. The problem comes when deciding which sub to get based on that how much power I can do. My car is everything, I need it for work, I need it for school. I need my alternator to survive. The question is, if I get the Dual 4 ohm version of that sub, and I wire it down to 2 ohms, it'll do 600 watts RMS, and I know my alternator could take that. The problem is, I don't KNOW if I could get the Dual 2 ohm version of the sub, wire it down to 1 ohm at 1000 watts RMS, and set the gain really low so I would be pushing 750 watts MAX from the amp, as 750 watts is the borderline RMS I will do with my current alt, period. So 2 questions. Would setting the gain realllllyyy low, or even at its lowest, basically reduce the amount of wattage going to the amp? And second, what would you think the SPL difference between dong 600 watts RMS vs doing 750 watts RMS would be? Would it be noticabally louder? They are the same exact sub, same exact custom ported box tuned at 32hz, just different RMS. And take into account my alternator. Thanks Edited January 31, 2012 by EpicMango Quote Link to comment Share on other sites More sharing options...
412 CVX Posted January 31, 2012 Report Share Posted January 31, 2012 noticably louder? probably not. you should be safe running 750 RMS. just make sure your gains are set properly (guesstimating or listening doesn't count) definitely do the big 3 upgrade if you're worried how your alt will take the power. Quote Just say no to Ground Pounder Customs. My temp system build log More box buildssome cars do over 170db with one sub, so clearly my two 12"s can do that in my car, with my knowledge too! look out bitches! I'm with captain stupid. Link to comment Share on other sites More sharing options...
EpicMango Posted January 31, 2012 Author Report Share Posted January 31, 2012 noticably louder? probably not. you should be safe running 750 RMS. just make sure your gains are set properly (guesstimating or listening doesn't count) definitely do the big 3 upgrade if you're worried how your alt will take the power. So should I just do 600 watts RMS and be on the safe side? Quote Link to comment Share on other sites More sharing options...
Bump4life Posted January 31, 2012 Report Share Posted January 31, 2012 i think you'd be fine running 1000 rms. most likely with that stock alternator and no big 3 or anything you wont get 1000 rms out of the amp anyway after box rise too. you should be fine Quote Buyer/Seller Feedback Thread: http://www.stevemead...5015-bump4life/ MB C220 153 Trunk Car Build Log: http://www.stevemead...d/#entry1840136 MB C280 Ipad Dash SQ Build Log: http://www.stevemeadedesigns.com/board/topic/194484-bump4lifes-new-benz-tony-c-relay-kit-pictures-ce-electric-audison-front-stage-installed/ My SPL Log: http://www.stevemead...__fromsearch__1 BMW M340 xDrive Stock, for now. Corner Load 10" maybe soon. But does 10s in the 1/4... Best Scores out of a trunk 153.0 sealed legal full tilt clamped 5524 @ 42 hz 154+ windows down, 155+ kick Link to comment Share on other sites More sharing options...
EpicMango Posted January 31, 2012 Author Report Share Posted January 31, 2012 i think you'd be fine running 1000 rms. most likely with that stock alternator and no big 3 or anything you wont get 1000 rms out of the amp anyway after box rise too. you should be fine I don't want to do more than 800 watts from that amp. I heard that after that the signal will probably be dirty/clipped. Quote Link to comment Share on other sites More sharing options...
deaf_wish Posted January 31, 2012 Report Share Posted January 31, 2012 Most people clip hard when they burp, just don't do it all day. Quote My build. http://www.stevemeadedesigns.com/board/topic/74265-project-clean-update-on-doors/ My other build. http://www.stevemeadedesigns.com/board/topic/100534-two-c3s-and-a-mojo2500-under-the-seat/ Link to comment Share on other sites More sharing options...
412 CVX Posted January 31, 2012 Report Share Posted January 31, 2012 you wouldn't be clipping at all if you set your gains right, rather than just guesstimating. you're not gonna be able to tell when you hit 800 watts anyways. unless you have a clamp, which i doubt. Quote Just say no to Ground Pounder Customs. My temp system build log More box buildssome cars do over 170db with one sub, so clearly my two 12"s can do that in my car, with my knowledge too! look out bitches! I'm with captain stupid. Link to comment Share on other sites More sharing options...
Bump4life Posted January 31, 2012 Report Share Posted January 31, 2012 set your gains right and you wont clip. and like i said before although you wire your amp to 1 ohm, in a perfect world you'd get 1k rms out of it. This is real world daily application with no electric mods. Set gains right no clipping and your equipment along with your car will do fine. Quote Buyer/Seller Feedback Thread: http://www.stevemead...5015-bump4life/ MB C220 153 Trunk Car Build Log: http://www.stevemead...d/#entry1840136 MB C280 Ipad Dash SQ Build Log: http://www.stevemeadedesigns.com/board/topic/194484-bump4lifes-new-benz-tony-c-relay-kit-pictures-ce-electric-audison-front-stage-installed/ My SPL Log: http://www.stevemead...__fromsearch__1 BMW M340 xDrive Stock, for now. Corner Load 10" maybe soon. But does 10s in the 1/4... Best Scores out of a trunk 153.0 sealed legal full tilt clamped 5524 @ 42 hz 154+ windows down, 155+ kick Link to comment Share on other sites More sharing options...
kirill007 Posted January 31, 2012 Report Share Posted January 31, 2012 you dont hear any difference between 600w and 750w. The difference is barely 1.5db and that isnt audible at all. A 3db difference is slightly audible. Just keep it on the safe side and do the 600w and set the gain correctly. Quote Thinking is the root of all problems... You ALWAYS get what you pay for. Link to comment Share on other sites More sharing options...
miniSPLlancer Posted January 31, 2012 Report Share Posted January 31, 2012 you dont hear any difference between 600w and 750w. The difference is barely 1.5db and that isnt audible at all. A 3db difference is slightly audible. Just keep it on the safe side and do the 600w and set the gain correctly. LMAO, 3db is slightly noticeable, haha. 3db is either double the cone area or double the power. In other words, 3db is twice as loud, if that's only slightly noticeable then I must have remarkable hearing because that's a huge difference to my ear when I increased 3 db. Quote 2011 Mitsubishi OutlanderSony 712 Soundqubed HDS208 Alpine MRV-M500 Transmission line enclosure Soundqubed wiring Knu rca XS Power battery CNF terminals Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.