Surface area FTW?
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Silver Member Username: StevefrenchPost Number: 134 Registered: Jan-07 | Pure SPL...which will be louder 1. 3 10" alpine type-e's given 450W rms ported 2. 1 12" alpine type-r given 450W rms ported 3. 1 10" Rockford Fosgate T1 given 450W rms sealed Will the type-e's be loudest because of the surface area? |
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Silver Member Username: RiskybPost Number: 613 Registered: Feb-06 | Depends also on Xmax of the subwoofers but I would say yes the 3 type-es would be loudest. I would rather have the R myself though because of SQ and the future upgradeability. In the future if you bought another type-r its would be much better than the 3 type-es. |
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Gold Member Username: Adam_s15 TC9 Hybrid, RE MT Softparts Post Number: 1074 Registered: Aug-04 | Of course. |
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Gold Member Username: Extrmndor3IF U HEAR ME... crazydbs.com Post Number: 4662 Registered: Feb-06 | in spl xmax its not a big factor it will be the motor streng and its efficiency... xmax its more of a sq spec than spl |
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Gold Member Username: BernymacCambodian Post Number: 2537 Registered: Sep-04 | best advice you can get....save your money. |
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Gold Member Username: JohnfiacA-ToWn, 152-153db Da... My wangers b... Post Number: 2459 Registered: Mar-06 | doesnt xmax have the biggest effect on SPL then SQ? Each mm more that my subs moves make it so much louder |
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Gold Member Username: JohnfiacA-ToWn, 152-153db Da... My wangers b... Post Number: 2460 Registered: Mar-06 | but it would have an effect on the SQ still if its Xmax wasnt good enough to flex on the lows without full excursion.... making them sound like cr@p |
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Gold Member Username: Safe_crackerChicago, IL US Post Number: 2684 Registered: Jan-06 | A cycle is only sooo long so the XMAS would be frequecny dependant. A higher XMAS setup may get louder on the low end BUT on the high note it is all pretty much a level playing field, this is where BL and P MAX comes into play... Polo.  |
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Silver Member Username: SkiesCourtenay, British Colu... Canada Post Number: 621 Registered: Aug-05 | I would take the R's any day. I would say it would also be louder. |
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Gold Member Username: Safe_crackerChicago, IL US Post Number: 2687 Registered: Jan-06 | Oh BTW it is also dependant on moving mass, sorry... Polo...  |
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Silver Member Username: SkiesCourtenay, British Colu... Canada Post Number: 622 Registered: Aug-05 | Sorry, Polo, since when did a holiday come into this? |
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Gold Member Username: Extrmndor3IF U HEAR ME... crazydbs.com Post Number: 4664 Registered: Feb-06 | when ur playing a 50 hz tone the sub will move front to back at 50 times per second...at that fast it doest have time to reach full xmax and will only be needing 15-20% of its xmax... but if u wanna play 20 hz tone it will take 3 times the xmax at one octave lower than 50hz |
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Gold Member Username: Safe_crackerChicago, IL US Post Number: 2689 Registered: Jan-06 | Ya, that's what i was saying LilRob.. Polo.. |
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Gold Member Username: Extrmndor3IF U HEAR ME... crazydbs.com Post Number: 4666 Registered: Feb-06 | oh shut up polo u dont know nuttin |
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Gold Member Username: JohnfiacA-ToWn, 152-153db Da... My wangers b... Post Number: 2472 Registered: Mar-06 | But it comes back to being more SPL oriented when you add alot more power The more power your addding.... the further its moving, but i see where your coming from... i think its debatable as to what XMAX has the greater effect on.... |
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Gold Member Username: JohnfiacA-ToWn, 152-153db Da... My wangers b... Post Number: 2473 Registered: Mar-06 | ^kinda like how my dd's are loud even b4 they are physically moving(niticable by eye) XMAX doesnt have an effect either way lol |
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Gold Member Username: Safe_crackerChicago, IL US Post Number: 2690 Registered: Jan-06 | A cycle is a cycle regardless of power. So say you run the same 50 hz signal that LilRob (stupido) mention at 1200rms and 2400rms, the 2400rms will still use the same amount maybe a tad more due to BL and mass in motion but beyond that it is the same signal. Now the additional power of 2400rms will create a higher BL, yes the BL is variable with increases of power, it is an electric motor. Only the static BL is a constant, so this said the increased power will allow said mass to reach its cycle peak much quicker than the 1200rms and retain linearity much better than the lower power level, usually resulting in a theoretical DB increase. Now here is a kicker, if you use bass boost at that said frequency (50hz) you will allongate (sp) that waveform resulting in a XMAX increase but it will require a higher power level to keep it linear, this is why your amp uses more power on BB than without. Polo.. PS- Don't get me started LilNob, lol... |
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Gold Member Username: Extrmndor3IF U HEAR ME... crazydbs.com Post Number: 4670 Registered: Feb-06 | oh shut up polo....i already knew that u cracker u still dont know nuttin... |
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Platinum Member Username: BestmankindLos Angeles, CA USA Post Number: 12352 Registered: Oct-05 | stiffer spider=more spl. with that said, alot of the spl subs dont have big excursion. |
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Gold Member Username: Extrmndor3IF U HEAR ME... crazydbs.com Post Number: 4675 Registered: Feb-06 | and aotmic apxx have 10mm of xmax and they still sound nice... UNITS APXX10D2 APXX12D2 APXX15D1 APXX18D1 Revc (ohms ) 1.00 3.60 1.80 2.00 Fo (Hz) 45.06 42.20 39.80 38.34 Sd (sqM) .0330 .0550 0.089 .1195 Bl ™ 17.94 37.66 27.11 26.88 SPLo (dB) 91.92 94.34 95.46 97.10 Xmax (mm) 10 10 10 10 Dvc (mm) 75.00 75.00 75.00 75.00 Qms (m.q.) 6.31 2.83 3.12 5.81 Qes (e.q.) 0.106 .133 .175 .187 Qts (totQ) 0.105 .127 .165 .181 Vas (liter) 18.57 31 63 112 Cms (uM-N) 120 72. 56 55.2 Mms (gram) 141 197 285 312 |
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Gold Member Username: JohnfiacA-ToWn, 152-153db Da... My wangers b... Post Number: 2474 Registered: Mar-06 | well ive seen my sub get excursion over 2 inchs :-p but on the most common bass lines.... around 40hz range its only about a inch of xmax...but i do see my xmax increase as power increases regardless of the freq. the more power i add the more it does it..... at the higher freq. ya it takes lots more power to move it but it does get greater.... and i dont really hear a SPL change until it does move more once i get to a certain point.. |
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Gold Member Username: Safe_crackerChicago, IL US Post Number: 2691 Registered: Jan-06 | Killa you are probably right. When you add more power it will move the structure FASTER/STRONGER and in doing this the mass has more momentum, gains strength and weight. With this said it also take more for it to change directions, this is why the current alternates. The signal will still be the same but the sub would start to lose linearity and cannot holds its position as well, will also soon start to distort. BTW if you are noticing this Killa it is because your sh!t is grossly underpowered and the amp you have is a POS, time for a new one soon, lol. PS----> (For LilNob)  |
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Gold Member Username: Denali_on_22sHit you in the chest m... Post Number: 2158 Registered: Feb-06 | Well besides the arguing this guys question is retarded... I mean if you could go with 3 10s then why wouldn't you go with 2 12s? or at least 1 12 T1? also... why would you seal the T1 but port the others? Make your thoughts logical for the love of God... But that is besides the point... All of those sub pretty much blow when being run off 450 rms... type e's blow all the time and type r's and t1s need more power, and T1s are basically overpriced as hell and don't really do much damage... |
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Silver Member Username: Skibum12189Cleveland Post Number: 496 Registered: Mar-06 | fyi, the surface area of 2 12's is actually nearly equivalent to the surface area of trip 10's.....sooo as many before me have said, save up a littttle bit longer and get 2 12" r's |
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Silver Member Username: Skibum12189Cleveland Post Number: 497 Registered: Mar-06 | haha using (pi)®squared i believe the 2 12's are around 226 sq. in. and trip 10's are only like 236....haha love showin off the math skills, cant believe i'd honestly ever use that |
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