posted
8 10's should have more spl than 2 12's at 500 watts right?
Some guy at our local audio shop said that watts is all that matters or something. He was saying that it's stupid to have that many speakers when 1 will be just as loud...at the same amount of watts.
geez...
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Posts: 213 | From: Carriere, MS, US | Registered: Jun 1999
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posted
Everybody pretty much agrees that a single woofer with 500 watts will be outperformed by a pair of the same woofer sharing 500 watts. Now unless talking, HUGE quality differences: THERE'S NO REPLACEMENT FOR DISPLACEMENT!
I would rather have a deck on 4 15s than an 800a2 on a single 8"....
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Lord Dukk The Big Show The Dukk says: Know your bass: PORT your damn box!! Have HoleSaw, Will Travel!
posted
I believe the theoretical #'s are: Add 3 db for doubling power, add 6 db for doubling cone area. Although it won't always work out in practice that way.
posted
I think I'm going to go with the 10's anyway. It would just look cooler to see 8 10's rather than 2 15's. Plus if I did choose to compete in an SPL contest..I could stay in the 1-500 class or something. I'd be paying around the same price for the 15's or 10's too..so..I'll go with the 10's.
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Posts: 213 | From: Carriere, MS, US | Registered: Jun 1999
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posted
I am a big fan of multiple subs. Go for it....
You said something about competeing in the 1-500 class if you competed. Competitions are more often based on cone area or sub number now. Just be aware that you might have to go up against someone like TECH and his 8 18s.
------------------ ******************* Founder: Street Sounds Car Audio Club ******************* If It Don't Read 150+ it Ain't Loud......
Posts: 289 | From: Howell, MI | Registered: May 1999
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posted
yeah...that's something I didn't understand about the last show I went to. This guy with 3 8's had to compete against someone with 2 12's. He was already down cone area wise...but it went 1-24", 25-50", 50+". If he had put 1 more 8 he would have had to compete in a higher level..but actually...those 4 8's would be about the same as 2 12's. That didn't seem fair to me.
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Posts: 213 | From: Carriere, MS, US | Registered: Jun 1999
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posted
Well you can thank the industry for that it was really unfair for someone to have to compete with someone who actually had say 100 watts going against someone who had a amp that was rated at 1 watt but then they dropped the ohms and they actually get like 500 to 1000 watts. Cheater amps killed the fairness of competing so they had to try and find a fair way to have classes and cone area is about the fairest way they could come up with.
------------------ BIGMAN Coming in 2000 "THUNDERDOME"
Posts: 64 | From: Grand Rapids, Michigan USA | Registered: May 1999
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posted
I guess I can see your point with the watts...but it's still not fair with the cone area thing....unless they go with actual comparison's instead of adding the speakers up. ex....4 8's should compete against 2 12's.
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Posts: 213 | From: Carriere, MS, US | Registered: Jun 1999
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I have a friend with 3 JL 8W0's and 200W and he always gets put in the same class a me 4 15s and 2000W. He thought that was bad, but at the last show we went to their was a guy with 4 15 Strokers. During quailfing my friend had to go next to him. It was like his radio wasn't even on.
I say no matter how we change the rules money is still a big part of who wins. I think Wayne has a good setup and that SuperStock class was a great Idea.
------------------ ******************* Founder: Street Sounds Car Audio Club ******************* If It Don't Read 150+ it Ain't Loud......
Posts: 289 | From: Howell, MI | Registered: May 1999
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posted
actually this is one of the first discussions i wanted to talk in. pretty strong subject. now first off 4 8"s would surpass 2 12"s 32 - 24 , but any way yeah both issues can be unfair and even if they weren't the ride issue would evolve. because a person with 2 12"s in a old caddy going agianst some one with the same in a metro wouldnt be fair hehe i currently have 1 DB+ 12" in a 1ft^3 box with only a 2" port @ 250wts and it pounds im gettin a meter soon so ill post it. it beets every other setup ive had including 2 older style kenwoods in a 1.5^3 with 3" port pushing 250wts each into 2 ohms. i think it all comes down to system design and quality of components together. not cone area or wattage as much if the components suck. thats just my 2 cents thanx
posted
Ok what about this. I know that Xmax also plays a big part in SPL...Right? Well what about this. This is also something a scenero I am looking at. I have 4 PPI PC 12's from 1998..Not the new ones. peak to peak is like 17mm...But there is 4 of them. Each one would end up seeing 400 watts RMS...I know that is double the rated but O WELL..lol...
Hehe also I had to add this..I forget the post but this is over 10 posts in a thread and still on topic...
The other setup is 2 HCCA 12's...xmax peak to peak of 4 inches..and I think liniear xmax of 2 or 2.25 inches. These 2 would be driven with about 900 to 1100 watts each...also more then the rated but I have a friend doing this now with one and no problems...
Would the increase in XMAX make up for the fact of having half the drivers. What I am also asking is how much does XMAX play a role...would a sub that has double the xmax of another sub but 2x as loud? All being equil and if you are actually pushing it to xmax...
Thanks for any responses...
------------------ _____________________ 1999 USAC Finals Qualifier Usac Sactioned Judge -----Judged----- 1999 Spring Break Nationals 1999 Midwest Regional 1983 Camaro-152dB old system..new system on the way. -Irc Chat Room- chat.talkcity.com ports 6667,6668,6669,7000 Room Name #auto-audio I am the room coordinator for this room. Stop by sometime and say hi...We are busy after 9:00cdt usually.
[This message has been edited by Proaudio150 (edited 06-21-99).]
Posts: 8036 | From: Huron,Oh | Registered: May 1999
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posted
I'd have to say yes. Sub a is excurting x amount and you take sub b and drive it to it's superior x2 amount (requiring more power) and yes it would probably yield at or close to 3 db increase over sub a. anyone else?
'Where there's a will there's a wall' 'Would you like a little SQ with your SPL?'
Posts: 926 | From: Sugarland, Tx | Registered: May 1999
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DragQueen
unregistered
posted
It's a good question. I have pondered the issue and I have thoroughly confused myself. Are you really creating as much pressure though, just because of the XMax? Hmmm, maybe somebody smarter than me knows the answer!!!
posted
Well I was thinking about that. If you have to subs one where the xmax is greater then the other and it moves 2x as far...Well then that would HAVE to compress more air..and if you have to power to drive it to xmax that "on paper" would be 2x the spl right?
Hmm..
------------------ _____________________ 1999 USAC Finals Qualifier Usac Sactioned Judge -----Judged----- 1999 Spring Break Nationals 1999 Midwest Regional 1983 Camaro-152dB old system..new system on the way. -Irc Chat Room- chat.talkcity.com ports 6667,6668,6669,7000 Room Name #auto-audio I am the room coordinator for this room. Stop by sometime and say hi...We are busy after 9:00cdt usually.
Posts: 8036 | From: Huron,Oh | Registered: May 1999
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Audioextreme: nobody is forcing your buddy to run 3 8s! I'm all for 8" woofers, and 3 would be all the bass needed to have a great stereo, but not a dragger.
I mean, you don't bring a stock Camaro to the Winternationals!!
I know it's nice to win, but he should concentrate on bettering his own score.
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Lord Dukk The Big Show The Dukk says: Know your bass: PORT your damn box!! Have HoleSaw, Will Travel!
My friend just goes to the shows to have fun. He really could care less. He is just new to the sport and that is his first system. I was just using him as a example... If you read the post I didn't say he was mad about it.
But he is planning something new, I think he has caught the BUG.
------------------ ******************* Founder: Street Sounds Car Audio Club ******************* If It Don't Read 150+ it Ain't Loud......
Posts: 289 | From: Howell, MI | Registered: May 1999
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