Pro7 Posted March 14, 2014 Report Share Posted March 14, 2014 So my AMM-1 just came in and right away I had to get to using it. I have an MB Quart q1.1500d (a Maxxsonics amp so think hifonics) in my car running off of a D3400 and the 5.7L stock alt (160 amp I think). So on to RESULTS! Freq- Dyno'd power @ measured box rise - Measured Power Factor 30hz - 1043W @ 1.6 ohms - 95% 33hz - 1048W @ 2.0 ohms - 83% 34hz - 1032W @ 2.1-2.2 ohms - 79% 36hz - 951W @ 2.5 ohms - 78% 40hz - 607W @ 4.1 ohms - 73% 42hz - 563W @ 5.4 ohms - 74% 44hz - 501W @ 7.4 ohms - 76% 46hz - 445W @ 10.1 ohms - 80% 48hz - 423W @ 9.3 ohms - 96% 50hz - 421W @ 6.8 ohms - 95% I tried to get voltage drop but the dc volt min/max was only reading max and 0.0 constantly for min I might try again later to get voltage drop but if the min/max doesn't work it's difficult for me to get that number by myself. Amp Guts Posted ↓↓↓ Conclusion I know these numbers aren't too important since I couldn't get at what voltage it was at but I had the car running at idle and if I had to guess I would say I dropped to ~13.0V. This was about what I was expecting from this amp, nothing too impressive but it wasn't wayyyy under rated power. I've been waiting to do this test before getting a new amp and it finally came in! I might do it all again to check the voltage but what do you guys think? I thought the 33hz numbers and 46hz numbers were the most impressive/telling. I've gotten a blowjob and picked up my iphone behind her back to see what email notification I got from smd before Link to comment Share on other sites More sharing options...
hazestorm23 Posted March 14, 2014 Report Share Posted March 14, 2014 That's crazy what one frequency can change Link to comment Share on other sites More sharing options...
Pro7 Posted March 14, 2014 Author Report Share Posted March 14, 2014 Yeah it's crazy that it's wired to 1 ohm and rises to ~10 ohms at 46hz. I'm still trying to make sense of all these numbers but isn't the tuning frequency of a box supposed to be shown by a spike in impedance? So does that mean that my box is in reality tuned to 46hz?? In torres it said that this box is tuned to 35hz but I did kerf one outer side of the port but that wouldn't affect tuning that drastically would it? I've gotten a blowjob and picked up my iphone behind her back to see what email notification I got from smd before Link to comment Share on other sites More sharing options...
hazestorm23 Posted March 14, 2014 Report Share Posted March 14, 2014 I'm still trying to understand most of this stuff myself bro so can't really help you but there is a lot of experienced guys in here so that's why I'm on this forums. But didn't you build the box yourself? Link to comment Share on other sites More sharing options...
meade916 Posted March 15, 2014 Report Share Posted March 15, 2014 awesome! looks like you are having some fun! All SMD products + MORE available at my store here! https://wccaraudio.com/ Subscribe to My Youtube Channel! Over 1,000,000 subscribers strong! Turn on your notifications! http://www.youtube.com/meade916 Follow My Instagram! Daily live feeds from the shop, exclusive content way before it hits my Youtube channel...and little squares with photo's in them http://www.instagram.com/meade916 The Official SMD Facebook fan Page https://www.facebook.com/SteveMeadeDesigns/ Follow my Tweet (Twitter) http://www.Twitter.com/meade916 Link to comment Share on other sites More sharing options...
Krakin Posted March 15, 2014 Report Share Posted March 15, 2014 The tuned frequency of a vented enclosure will have a VALLEY, not a peak in the impedance. In the impedance curve of a vented enclosure there will be two peaks in the impedance, one before the tuned frequency with the second rise coming a few octaves after the resonance frequency. The resonance frequency will have the lowest impedance in between the two peaks. Edit: Remember that the resonance of an enclosure will change depending on its environment. Krakin's Home Dipole Project http://www.stevemeadedesigns.com/board/topic/186153-krakins-dipole-project-new-reciever-in-rockford-science/#entry2772370 Krakin, are you some sort of mad scientist? I would have replied earlier, but I was measuring the output of my amp with a yardstick . . . What you hear is not the air pressure variation in itself but what has drawn your attention in the two streams of superimposed air pressure variations at your eardrums An acoustic event has dimensions of Time, Tone, Loudness and Space Everyone learns to render the 3-dimensional localization of sound based on the individual shape of their ears, thus no formula can achieve a definite effect for every listener. Link to comment Share on other sites More sharing options...
Pro7 Posted March 15, 2014 Author Report Share Posted March 15, 2014 Ok thanks, I was kinda worried that I somehow screwed up my port to be tuned to 46hz I've gotten a blowjob and picked up my iphone behind her back to see what email notification I got from smd before Link to comment Share on other sites More sharing options...
Krakin Posted March 15, 2014 Report Share Posted March 15, 2014 It would also be cool if you could find the impedance curves at different initial amounts of power (to have a control frequency like 30 hz or 100 hz). Krakin's Home Dipole Project http://www.stevemeadedesigns.com/board/topic/186153-krakins-dipole-project-new-reciever-in-rockford-science/#entry2772370 Krakin, are you some sort of mad scientist? I would have replied earlier, but I was measuring the output of my amp with a yardstick . . . What you hear is not the air pressure variation in itself but what has drawn your attention in the two streams of superimposed air pressure variations at your eardrums An acoustic event has dimensions of Time, Tone, Loudness and Space Everyone learns to render the 3-dimensional localization of sound based on the individual shape of their ears, thus no formula can achieve a definite effect for every listener. Link to comment Share on other sites More sharing options...
WillistonAudioLabs Posted March 15, 2014 Report Share Posted March 15, 2014 Cool test, thanks for sharing! See my videos on YouTube http://www.willistonaudio.com Many tests and demos of OLD and NEW SCHOOL car audio gear! See cool pics on Instagram @oldschoolstereo Link to comment Share on other sites More sharing options...
Pro7 Posted March 15, 2014 Author Report Share Posted March 15, 2014 It would also be cool if you could find the impedance curves at different initial amounts of power (to have a control frequency like 30 hz or 100 hz). I can try this tomorrow and edit it into the original post, any other things you guys think I should try? If I can get the dc min/max to work I think I'm gonna check the drop across my run from batt to amp and at amp under load. I've gotten a blowjob and picked up my iphone behind her back to see what email notification I got from smd before Link to comment Share on other sites More sharing options...
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