Cboeger2 Posted March 19, 2018 Report Share Posted March 19, 2018 The birth sheet says 540RMS RF claims 75 x4 @ 4 ohms 100x4@ 2 ohms 200x2 @ 2 ohms bridged since the birth sheet is 540rms does this mean its outputting 110x4 @ 4 ohms 135x4@ 2 ohms 270x2 @ 2 ohms bridged Link to comment Share on other sites More sharing options...
9Nails Posted March 19, 2018 Report Share Posted March 19, 2018 Those are most likely your RMS figures at 14.4V. What you can reliable count on, with a good working alternator and electrical connections. Dynamic burst will be higher. Link to comment Share on other sites More sharing options...
Cboeger2 Posted March 19, 2018 Author Report Share Posted March 19, 2018 16 hours ago, 9Nails said: Those are most likely your RMS figures at 14.4V. What you can reliable count on, with a good working alternator and electrical connections. Dynamic burst will be higher. i understand that, but like what would my rms x4 @ 4 ohms be? how can you calculate that? factory the max would be 400rms, but it birthed at 540rms. SO i'm assuming 540-400=140/4 = 35+75(rms x4)=110rms Link to comment Share on other sites More sharing options...
bcbrassard Posted March 19, 2018 Report Share Posted March 19, 2018 To many variables, i think your over thinking it. Link to comment Share on other sites More sharing options...
MrSkippyJ Posted March 20, 2018 Report Share Posted March 20, 2018 Just assume it does rated and use that value. F150: Stock 2019 Harley Road Glide: Amp: TM400Xad - 4 channel 400 watt Processor: DSR1 Fairing (Front) 6.5s -MMats PA601cx Lid (Rear) 6x9s - TMS69 Link to comment Share on other sites More sharing options...
Cboeger2 Posted March 20, 2018 Author Report Share Posted March 20, 2018 16 hours ago, MrSkippyJ said: Just assume it does rated and use that value. I'm just curious if it can be easily calculated. The older rf amps told you what rms they did at each ohms. I guess the new amps only give you the total rms on the birth sheet Link to comment Share on other sites More sharing options...
reedal Posted March 20, 2018 Report Share Posted March 20, 2018 once music is being played, wattage ratings go out the window. you won't see 4 ohms or 2 ohms the entire time you're playing music, if at all. SMD Tool Map https://www.stevemeadedesigns.com/board/topic/193176-smd-tool-map-new-november-2014/ Build log https://www.stevemeadedesigns.com/board/topic/197217-reeds-03-tahoe-hat-sqaq-singer-xs-shca-cockbox-80prs/?page=32 Link to comment Share on other sites More sharing options...
MrSkippyJ Posted March 21, 2018 Report Share Posted March 21, 2018 11 hours ago, Cboeger2 said: I'm just curious if it can be easily calculated. The older rf amps told you what rms they did at each ohms. I guess the new amps only give you the total rms on the birth sheet You can't accurately calculate it, it has to be measured. You can guess just like you have been, but without measuring anything you come up with is a guess. F150: Stock 2019 Harley Road Glide: Amp: TM400Xad - 4 channel 400 watt Processor: DSR1 Fairing (Front) 6.5s -MMats PA601cx Lid (Rear) 6x9s - TMS69 Link to comment Share on other sites More sharing options...
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