posted
sending an extra 78 watts to each of 2 voice coils should increase the SPL by how much?
I know this is hypothetical in nature since there is varibles involved that aren't listed but what do you folks gestimate it to be?
further if you have 1 amp putting out close to 6230 watts max running all 4 woofers or 4 amps putting rouhly 1713 to each speaker (4) do you think you would have better results with the one amp driving the load (4 speakers) or with 4 multiple amps driving the 4 individual speakers?
just seeing if it would be a .1 db gain in SPL or greater. Or if it will be negible and under the .1 gain?
posted
You need to double the power to get 3dB's. Techincaly you could pump double the power into a single sub setup and double the SPL (+3dB's), or you could add another sub that is playing the same amount of power as the first (so you've still doubled the power, you're just powering 2 subs now), and you should get +3dB's. There are tons of other factors that limit this though, like power compression and cancellation...
Posts: 112 | From: NB, Canada | Registered: Mar 2004
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posted
so basically I ain't going to see poop. which means to go with the single amp that has almost the same power as the 4 amps, but easier to tune and manage...
posted
What's the total power now? And what will it be if you make the change? Incresing or decreasing dB's is calculated by changing ratios, so you need to know what percentage of change you are making to know what the theoretical dB change will be. If you are going from 2000W to 2150W, the dB change could theoretically be .3dB's... Going from 2000W to 3000W could theoretically get you an extra 1.8dB's. The formula is 10*LOG(Pout/Pin), so as you can see, 10*LOG(2) which is twice the power, is 3dB's. Ummmm.... ya!
Posts: 112 | From: NB, Canada | Registered: Mar 2004
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quote:Originally posted by Rrrrolla: You need to double the power to get 3dB's. Techincaly you could pump double the power into a single sub setup and double the SPL (+3dB's), or you could add another sub that is playing the same amount of power as the first (so you've still doubled the power, you're just powering 2 subs now), and you should get +3dB's. There are tons of other factors that limit this though, like power compression and cancellation...
if you add another sub powered the same as the first you will not only be doubling your power but also doubling your cone area. much better results than simply doubling power to one woofer Posts: 12 | From: providence ri | Registered: Dec 2005
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posted
I agree, but in a world where a one woofer steup can take as much power as you throw at it and is not limited by an xmax, it will result in the same difference. If you double the cone are and only use half the power to each sub as you did to the one sub setup, your output will be the same. Increasing cone area is only useful if you also apply power to the sub with the cone area. For instance, your amp puts out 1000W to 4 ohms, if you add another sub in parallel, the amp should produce 2000W, 1000 to each, and you will get another 3dB's, but if you change out your subs to two 8 ohm subs, you will still only get 1000W out of the amp and will get no extra SPL just cause you have more cone area. You always have to either increase the power or somehow increase efficiency to get more sound.
Posts: 112 | From: NB, Canada | Registered: Mar 2004
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I was thinking more like sayar hacked onto Jims screen name.
-------------------- Team RF Bass Race Team Fi/AA Team Notoriously Loud Mafia Fear The Duck Team Slacker(member #2) Posts: 7969 | From: Rising Sun Md. | Registered: Dec 2001
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posted
All I can say is lol. How are you screwing with now?
-------------------- Rob, My Ride's http://mysite.verizon.net/proaudio150/ **UPDATED 8/5** Former UsacI 301-600 Pro World Record Holder and PortWars World Record Holder (old rules). -USAC 2001 World Champion and 2001 World Finalist
"Its sometimes the journey thats fun...not the destination." Posts: 8036 | From: Huron,Oh | Registered: May 1999
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posted
basically i was trying to make a point to him, that he wasn't going to gain more than a .2 db if and i mean if, his system actually is cohesive, and that is a .2 in a game he already lost seeing that in his class he would be handed is arse by about 100 people... sooooooo.... my mind is so clouded right now i don't want to have to think...
and i was telling him to go for the gold and make it a pretty system... that hammered, but I would get a better response if talking to a wall...
quote:Originally posted by JBONDOx: basically i was trying to make a point to him, that he wasn't going to gain more than a .2 db if and i mean if, his system actually is cohesive, and that is a .2 in a game he already lost seeing that in his class he would be handed is arse by about 100 people... sooooooo.... my mind is so clouded right now i don't want to have to think...
and i was telling him to go for the gold and make it a pretty system... that hammered, but I would get a better response if talking to a wall...
posted
most of the time if your running a pretty efficient setup and not reaching power compression or limited by movement of the woofer you usually gain 1.5 doubling power, or adding another sub with the same power on it...at least thats what i've seen.
-------------------- Posts: 6929 | From: Russellville AL | Registered: Nov 2002
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posted
There is another question I would ask myself...could I replace the one big amp if it fried??? If you have 4 smaller amps then if 1 dies I'm sure it won't be as big a dent to replace.
Posts: 3279 | From: North Little Rock, Arkansas | Registered: Apr 2003
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quote:Originally posted by JBONDOx: seeing that in his class he would be handed is arse by about 100 people...
Sayar builds his system so that he doesn't have any other competition. He builds for classes that only have one person in them, him, so that he will get a purdy trophy.
-------------------- North Dakota MECA Event Director Posts: 622 | From: Bismarck, North Dakota | Registered: May 2005
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sayar is a tard, anyone who believes otherwise is almost as dumb...
-------------------- "A computer lets you make more mistakes faster than any invention in human history--with the possible exceptions of handguns and tequila." - unknown
quote:NDMstang65 (9:54:55 PM): scottie gagged me once...
Posts: 8008 | From: Camdenton, Missouri, USA | Registered: Feb 2001
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posted
With a roof build down, he would be in Extreme.
-------------------- Team Image Dynamics/Zapco/Werewolf/JK Lab Team Kinetik Sick Bastard Audio SQ Who feels it knows it Posts: 7866 | From: Charlotte,NC USA | Registered: May 1999
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posted
so is he going to actually compete or just keep bragging about what his system "can" do?? If you search MECA, which is the only sanctioned events I can find results for him, he tops out at 153.3!!
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