ohmboy Posted July 15, 2014 Report Posted July 15, 2014 for the "Resistivity or resistance R" section of the calculator would i put in 6.1 or 4 (the subs are d4s an i have 2 subs) also since its more then 1 sub do i add the numbers together Example: 12.2 - 8 sub specs (2) sundown audio x18 1250 watts RMS, Re : 6.1 ohms, Fs : 22.5 Hz, Qes : 0.67, Qms : 5.49, Qts : 0.59, Le : 4.25 mH, Vas : 205.8 L, BL : 24.4 NA, Mms : 461.4 g, Cms : 0.11 uM/N, Cut-Out: 16.69", Gasket OD: 18.42". amp specs 2600 @1ohm http://www.sengpielaudio.com/calculator-ohm.htm this is temporary until i can have it looked over with a o scope fuckin things are expensive..
Broke_Audio_Addict Posted July 15, 2014 Report Posted July 15, 2014 How about just check the map and see if there is anyone with a dd1 near you so you can set your gains properly without guessing http://www.stevemeadedesigns.com/board/topic/137758-smd-audio-tools-map/?hl=%20dd1%20%20map 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.
Krakin Posted July 15, 2014 Report Posted July 15, 2014 That is a pretty inaccurate way to set your amp gains. Have you looked into a DD1? Buy: http://www.wccaraudio.com/smd-products/smd-tools/smd-distortion-detectors.html 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.
Krakin Posted July 15, 2014 Report Posted July 15, 2014 double post 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.
ohmboy Posted July 15, 2014 Author Report Posted July 15, 2014 i wish i had the money setting gains is something i could never do an im getting tired of taking my shit into a car shop to get it right this time ill prolly take it in an have it o scoped but i really would like to get a dd1 or o scope an learn to do it myself but money is just really tight at the moment.. dose setting gains with a multi meter even get it close or should i just wait an have it o scoped
TRON Posted July 15, 2014 Report Posted July 15, 2014 i wish i had the money setting gains is something i could never do an im getting tired of taking my shit into a car shop to get it right this time ill prolly take it in an have it o scoped but i really would like to get a dd1 or o scope an learn to do it myself but money is just really tight at the moment.. dose setting gains with a multi meter even get it close or should i just wait an have it o scoped Multimeter is a no no. Wait to get it scoped, or try to find someone with a tool who can help. Edit: The link you posted is just ohms law, which is pretty much useless because what you're dealing with is a reactive load. Avalanche Alpine Type S comps Alpine Type S 10'' Alpine MPR-F300 Alpine MRX-M50 Mechamn 270 XS Power d3400s
audiofanaticz Posted July 15, 2014 Report Posted July 15, 2014 are you physically watching them in the install bay when they are setting your gains with an oscilloscope? The mass majority of shops claim to use them, but don't even have one, or they own an oscilloscope and never use them (this holds true to MANY shops in my state). One shop in my town had an oscilloscope for the longest time and rarely used it unless it was on their own vehicles, they also bought a DD-1 high volt model a couple years ago and again rarely used it. Seems like they played with it a few times and then he was wanting to sell it. His excuse was that he was doing it for 20+ years without these tools and dont need a tool to tell him what his ear can. Apparently he has the first pair of human ears that can not only detect total harmonic distortion, but also tell if its less than 1% THD....... Pure laziness at its best, and the overall dont care attitude towards their customers with the assumption of if it blows I can sell them something new and make more profit. If it was me, Id save your money and really look into getting a dd-1, if you got a buddy or 2 with stereos chip in together on it. Its a useful tool to have at your disposal anytime you swap out your gear for something new.
Aj11 Posted July 15, 2014 Report Posted July 15, 2014 my Shops around here charge $85 a hour with a 1hour min. so just for a "tune" (because they tune by ear) id have to pay $85 for Them to max my settings. rather spend the the extra $15 for a dd1 jvc deck stinger 1800 front hc 2000 kinetic rear 2 runs of 1/0g big 3/4 ct 60.4 2 ct 1400.1 ct EXO 15 d1 lots of deadner type r comps front stage 6 kicker tweets rear stage lots of great stuff coming soon ho alt more bats ct comps for front stage more deadner sweet amp rack lots of L.E.D lights new deck (thinking 80 prs, or flip out)
audiofanaticz Posted July 15, 2014 Report Posted July 15, 2014 ^^^ and that's just a plan asinine price and poor quality of workman ship I guess you could say. So far the CC-1 has been one of my favorite tools, just due to the fact you can actually pinpoint what frequencies your setting your low pass or high pass and subsonic filters at. You can tune a system for 24hours straight by ear and you will never be able to tell the difference between 65hz and 68hz. You are able to tell which of those 2 frequencies are higher, but that's about it. Because I know for sure that if someone played both those 2 frequencies, or any other frequency for that matter and told you to guess what frequency you where hearing you wouldn't be able to do it.
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