Ok i think i asked this before but never got a clear awnser. If i Had a 1200watt rms amp. Would i get more sound out of 1 elemental design 12A or 2 of them... i know adding a second sub only gains you like +3db but i assume thats if you are giveing the second one the same amount of power. but i'm talking about running one off the 1200watt amp or running 2 off the same amp..
Replies (33)
Munchiesyumm on 01/4/2004 14:42:52
Well,
Driver Name : e12A.22
Available Voice Coils : Dual 2 ohm
Recommended Power Range : 750/1400 watts
Recommended Applications : Sealed / Vented
Rec. Box Sizes : Sealed (.7-1.2cF), Vented (1.4-1.8cF)
Price: $295
JBL 1200.1 $250 www.ikesound.com
Output 4 Ohms: 600W x 1
Output 2 Ohms: 1200W x 1
It looks like to me one sub on the JBL 1200.1 would not work. The sub is rated 750watts RMS feeding it 1200.1 will put a lot of strain on one subwoofer. I think it would be better to go with 2 of these subs and run them a little below the RMS rating rather than 1 and have a very high potential to blow up the sub.
You might want to check out some other options also. For how much those subs cost you can get a lot of really great really high quality subs that will match the amp better.
good luck!
uochronos on 01/4/2004 20:59:51
Actualy the rms range for this speaker is 300-1000watts rms sealed or ported per sub... on sealed it says you can go over 1000watts no problem. ported it says to eb carefull over 1000. thats why i'm chooseing these subs is because they are so versital you can use as small as a 600watt amp to power 2 of them or as much as 1000rms to power one in a ported box.
Munchiesyumm on 01/4/2004 21:09:48
Insteresting because I pulled the numbers that I got directly off the manufacture.
please post the site where you got your information
Well if your info seems to be the case I would go with one sub a full power rather than two. +3d for more money? hmm... not my bag candy.
uochronos on 01/4/2004 21:20:44
Umm you obviously did not read the whole elemental designs web site... i pulled those numbers right from them. you even listed it yourself man 750/1400 is recomended not minimum maximum.... then at the bottom it lists sealed and ported enclosures ported it says 300-1000rms its not safe to push over 1000 in ported and then in sealed it says 300-1000rms... these speakers are built to keep up with like JL w7's to have them not be able to take 1000watts and not blow would be silly... i suggest you read the would Elemental Designs web site for the 12A... i personaly always try to read the whole site for any product before helping someone alot of times there is more to meets the eye unless you read the whole product description and not just the simple data sheet. and i'am more then willing to pay 300$ more for 3db i'am willing to pay 2000$ for 2 JL w7's i simply like the ED speakers.
What i really wanted to know was i dont under stand if i well get more db runing 1 of these at 1200watts ore 2 of them at the 600watts each... i want the most bang for my buck i would prefer a single sub and i would think one running at 1200 would put out more DB then 2 running at 600 each but i'm not sure... thats what i need awnsered.
uochronos on 01/4/2004 21:29:24
btw Munchiesyumm its not that i dont appreciate the help i always like any input but i have already choosen these subs unless someone shows me soemthing twice as good for around 100$ more or less. so when you said "Well if your info seems to be the case I would go with one sub a full power rather than two. +3d for more money? hmm... not my bag candy. " thats not really helpful i already stated i was willing to go either way i wanted to know which had DB... i want all the db i can get and choose these subs because they well give me sq too... whether its your bagh of candy or not this is my choice i just need some facts about what well net me more sound.
Buickman94 on 01/4/2004 21:41:45
Depending on how much room you have and what type of box you use, i would assume 2 would give you more output. In the right vented box, 600+ watts to each sub should be enough to utilize them to near there full potential.
uochronos on 01/4/2004 21:45:58
unfortunatly a ported box would be very difficult to fit into my truck with 2 subs... i should have mentioned that... so i'm going to have to go sealed either way.... right now i have 2 10"s in a large sealed inclosure and it barly fits.... i dont think i would be able to fit a ported enclosure for these larger subs and have enough room for it to sound ok to. so i'm going to go 2 of them sealed or one of them sealed. i was originaly going to build a ported box for them... but once i looked at the room i had i voted against it.
Munchiesyumm on 01/4/2004 21:44:30
why are you getting on my case? I was trying to help.
I posted the Recommended Power Range if you want to run them at 1,000 watts RMS by all means by my guest. I don't want to tell someone to run subs over the reccommended power rating because thats not fair to them.
I am sorry I made you mad.
uochronos on 01/4/2004 21:59:42
You didnt make me made and i wasnt "getting on your case" but you obviously did not read all the info on the 12A and where giving inaccurate info based on that... not to mention nowhere in any of it did you awnser my orginal question.... you tried to tell me alot of other stuff... i never asked if it would be better RMS rating wise i asked what would net me more DB... i'm sorry if you think i was made but i was not. i just dont want you to be giving out info without having the whole story about the speaker. i just wanted you to be aware of the fact that sometimes there is more then just the raw data list on a speaker that soemtimes you haev to read into to get an accurate idea of what the speaker is capable of... as you say you didnt want to tell somone that it was ok to run it over the recomended power but if you had read farther you would haev seen the recomended power was higher then you thought infact in a sealed enclosure they can take over 1200watts(thats from me emailing them btw) not to mention i never asked what they could handle i asked what would be louder.... again sorry if i seemed angry that was not the case just wanted you to be a little more vigilant on reading the data and giving awnsers that actualy awnser the question.
Munchiesyumm on 01/4/2004 22:10:06
okay thanks for the advise.................................
You seemed a little lost in your original post. You did not post any questions pertaining to the fact that you wanted more DB. You stated in which adding another sub on a 1200watt rms amplifer would give you +3db which is true in many cases that is the difference vs. 1200 watts pushing 1 sub to it's absolute maximum rating.
You anwsered what you wanted to know you're self.
Why you don't want to take both subs and push them 750/1000/1200watts each for maximum performance even though you considered spending 2000 on JLW7. That would definatly give you maxium DB.
You're telling me I am way off subject with my posts. Okay so you may have been asking about DB ratings and I way displaying the recommended power ratings so the sub could be used most efficiency and last the longest. What I may have been trying to point out in a roundabout way was that you would be better off using two subs to maximize DB level.
Munchiesyumm on 01/4/2004 22:39:03
Hey by the way! How about those Alpine 10 Type R's you're getting rid of them?
aww :(
uochronos on 01/4/2004 22:42:19
Havent decided yet.. i really dont want to hehe i love them i may throw them into the wifes car and just tone down on the gain on the amp... they are really beutiful subs and they sound great i hate get ride of them but i really want 12 or 15 inch subs i want to get alot more lower bass and clear... for as little power as they take though and for being 10's they sure shake the place hehe.
erikcooper on 01/5/2004 01:06:05
If you were planning to spend that much more anyway, why not get both the subs and get another amp, if you really want the max db.
uochronos on 01/5/2004 01:42:03
2400watts of power i would have to buy a new altenator then.... and i dont want to do that i want to stay at 1200watts and get teh most out of that... already at 1200watts i'm going to have to buy a top of the line battery and a smaller pulley on my alternator to run it. if i had the money to 100% upgrade my electrical system i would but just to get a custom alternator for a brand new truck would cost me around 300-400$ then there is another amp another 400-500$ so that would be another 1000$ to run 1 more speaker hehe seems a little over the top even for me...
kiaman on 01/5/2004 02:27:23
ED 12a, perfect setup (as reccomended by ED): 1.0cf sealed box 1kw of power.
Relax_The_Mind on 01/5/2004 05:40:55
I think you would be fine with one of them bad boys in a ported/slotted box... More doesnt always mean better... and yes if you did want to put two it would mean another grand or two to upgrade everything else..
RTM
uochronos on 01/6/2004 16:34:22
the problem is i still havtn got a strieght awnser almost everything posted was stuff i already new.... or haev already asked... i wanted to know what would give me more DB 1 12A running off 1000-1200watts or 2 12A's with 600watts going to each one? since they are meant to handle up to 1000watts rms i was thinking that 1 running off that would probaly be putting out more or equal to 2 with 600 going to each. but was not 100% so swez ttocs or RTM or anyone else can you help me with just that question... and either way i would have the speakers in a sealed box i personaly like the sound of a sealed better it seems mroe versitile to me and i listen to alot of differnt types of music. thanks
Relax_The_Mind on 01/6/2004 20:00:45
That is a very ify question. You say they are going in a truck so lets say you have space for a custom ported single sub box. I think that it would have a bit more SPL than two of them given half power in a "sealed" box.
Besides trial and error and actual testing. My educated guess based on experience is that 1 12A in a "well" designed port or slotted box would net more Db than 2.
Did i just repeat myself?
RTM
cplkittle on 01/6/2004 20:44:10
under normal conditions a sealed box will net a gain of +3dB
with two drivers in a sealed box the addition of the second driver gains +3dB. So one ported equals two sealed.
Porting a box properly may have an additional gain over the basic +3dB , just be careful about overexcursion. Two ported boxes will give you a +6dB gain over 2 sealed. In most cases when using the manufacturer's recommendation for a ported box, the box is only around .25-.75^ft larger than the sealed recommendation.
erikcooper on 01/6/2004 22:11:39
You still gain the +3db for having two drivers even if you half the ammount of power that they are getting?
Relax_The_Mind on 01/7/2004 12:32:22
Erikcooper...
Yes it will still gain +3Db. You have two drivers instead of one. So at any given volume it is netting approximately +3Db more than it would be than if it had one.
Not necessarily saying that two drivers will have a higher total output Db than a single driver.
Given the sharp peak of an spl curve at higher input power levels...I would generally think having enough power to reach near or at full excursion would net quite a bit more Db.
RTM
uochronos on 01/7/2004 19:13:59
man am i ever still confused.... this whole question is the hardest thing i have ever tried to fuigure out... ok so 1 speaker runnign at 1200watts in a sealed box runnign at 50% gain and 50% volume well be equal to or greater then 2 of the same subs in a ported box with 600watts going to each on at 50% gain and 50% volume? lol dont think i can get more specific then that hopefull i well be able to figure this out you guys keep giving really good awnser i just dont think i'm quite understanding it... 1 ported with 1200 watts is the same as 2 sealed with 1200watts? that is what i got from cplkittle and that seems odd to me i would then in that exact circumstance it seems the ported would be way louder...
erikcooper on 01/7/2004 21:14:54
One sealed would not net more than two ported, the ported makes it louder. I am thinking being in a truck and all you should do one in a ported and it should be louder.
uochronos on 01/8/2004 14:56:27
Umm i know that infact i believe thats what i stated at the bottom of my post is that i didnt think that was right and thats not my question. i'm looking at sealed boxes and sealed boxes only please read my last post to get the question i asked.... but i'am not using a ported box only sealed. so please everyone quite throwing out ideas about ported boxes because that doesnt have to do with my question.
erikcooper on 01/8/2004 15:38:28
In all fairness you never stated that you only wanted sealed... You only asked which would be louder, the one sub or the two subs. One would be louder in a ported box than two in a sealed box. Since you don't want ported then the +3 db gain from a second driver will probably make the 2 sealed with half power louder than the 1 sealed with full power...
compvr15s on 01/8/2004 15:36:02
in theory yes, 1 ported with 1200watts would equal 2 subs using 1200 watts, but it mostly depends on the box itself, if you have a poorly consturcted box its not gonna matter how many watts you are throwing to it, its gonna sound bad either way. but with nicely constructed boxes you dont have that problem, i myself like the sound from sealed boxes, sounds more accurate and cleaner, you also save space with sealed. but we can not tell you how loud its going to be because we dont have your vehicle, you may get alot of cabin gain since its in a truck, this can add maybe 6 more db to the sound. you are not going to notice a huge difference in 3db.
but i can tell you from my own experience that my one 12 inch solo L7 in a ported box with 600 watts was as loud or louder than my 2 12inch solo L7s were in a sealed with 600 watts each. its just hard to tell you exactly. does this help any, if not can ya restate the question you are having a problem with. good luck
uochronos on 01/8/2004 17:26:04
yes it does help and i understand that... what i want to know is this well 1 12" sub in a sealed box with 1200watts running to it be as loud as 2 12" subs in a sealed box with 600watts each.. thats what i want to know... and i like sealed better too that why i'm going with it. so please no more info on ported verses sealed i just want to know the awnser to the above question... also we are assuming that the 2 sealed 12's and the 1 sealed 12 are in the same sive boxes. just the 2 sealed ones are of course twice the size so the speakers have the same volume box either way... if there is anything not understood just ask.
compvr15s on 01/9/2004 08:19:30
heres how i look at it. if you have a single ported 1200 watt rms system compared to two 600 watt rms going to the same sub. with the ported you will gain 3 db over the sealed, plus another 3 db since you are doubling the power. with the 2 subs you will lose 3 db to each sub since you are running at half power but gain another 3 db since you have 2 subs. if im thinkin the right way(may not be its 7:30 am, and had to work last night from 10pm till 6 am. so i may be thinkin wrong) the ported will be louder. if it was mine i would get the dual sealed enclosure, it just looks kinda odd with only one sub to me unless you have a really nice custom job. you will be happy with the sealed enclosure. this is just a hard question, so many things that can affect the end results. if you have a local shop see if they have a dual sealed box and will place it in your truck to see what it sounds like. but if you are going with 1200 subs they should be loud either way. maybe swez or ttocs can elaborate more. hope my thinking didnt confuse you if so just scratch my thought and wait for others.
erikcooper on 01/9/2004 10:02:37
It probably won't confuse him compvr, but he DOESN'T want ported... lol. In actuality here it seems as if they will be the same loudness. If you gain 3db for doubling the power to one sealed, and gain 3db for having two drivers in a double sealed, it should be the same. My outlook would be, the one sealed should be the same loudness as two, and it is one whole sub cheaper...
uochronos on 01/9/2004 16:51:45
thats what i was thinkg 1200watts two 1 sub would be the saem as 600wats each to 2 subs... in sealed enclosures... i get the whole ported over sealed thing but like erik said i dont want a ported box and as far as just having 1 sub it well be a custom install i plan to make a nice box that perfectly fits in place of one of my jump seats and it well be made to mount in and match my truck so whether i have 1 or 2 subs it well look right...
cplkittle on 01/9/2004 17:51:19
ok, according to some quick experiments with winisd, one speaker at 1200w has the same SPL as 2 speakers at 600w ea if the 2 speakers share the same air space. As far as seperate enclosures, I am not sure, but I assume it will be about the same.
cplkittle on 01/9/2004 18:02:13
Also, what is the voice coil resistance of the sub you have in mind? and what 1200.1 amp are you using?
If the voice coil is 4 ohms, and you are using the JBL BP1200.1, you only get 600w at 4 ohms even if it is just one speaker. If you add another speaker at 4 ohms parallel, it will deliver 1200w at 2 ohms, therefore 2 would be louder because you are getting 2@600w ea instead of 1@600w from the same amp.
uochronos on 01/9/2004 19:04:34
i'm getting an avionixx amp to match the 12A or 15A elemental designs sub... i well be puting 1000-1200watts into the subs... the exact number of 1200was more of an estimate just trying to see if 2 times the power to a single one would be close or equal... thanks cplkittle that helped alot finaly an awnser that was simple:)
i may go with a phoenix gold amp but only if i go with 2 subs... i would much rather go with the avionixx amp since thats what elental designs suggests even though i love phoenix gold.
Replies (33)
Munchiesyumm on 01/4/2004 14:42:52
Well,
Driver Name : e12A.22
Available Voice Coils : Dual 2 ohm
Recommended Power Range : 750/1400 watts
Recommended Applications : Sealed / Vented
Rec. Box Sizes : Sealed (.7-1.2cF), Vented (1.4-1.8cF)
Price: $295
JBL 1200.1 $250 www.ikesound.com
Output 4 Ohms: 600W x 1
Output 2 Ohms: 1200W x 1
It looks like to me one sub on the JBL 1200.1 would not work. The sub is rated 750watts RMS feeding it 1200.1 will put a lot of strain on one subwoofer. I think it would be better to go with 2 of these subs and run them a little below the RMS rating rather than 1 and have a very high potential to blow up the sub.
You might want to check out some other options also. For how much those subs cost you can get a lot of really great really high quality subs that will match the amp better.
good luck!
uochronos on 01/4/2004 20:59:51
Actualy the rms range for this speaker is 300-1000watts rms sealed or ported per sub... on sealed it says you can go over 1000watts no problem. ported it says to eb carefull over 1000. thats why i'm chooseing these subs is because they are so versital you can use as small as a 600watt amp to power 2 of them or as much as 1000rms to power one in a ported box.
Munchiesyumm on 01/4/2004 21:09:48
Insteresting because I pulled the numbers that I got directly off the manufacture.
please post the site where you got your information
Well if your info seems to be the case I would go with one sub a full power rather than two. +3d for more money? hmm... not my bag candy.
uochronos on 01/4/2004 21:20:44
Umm you obviously did not read the whole elemental designs web site... i pulled those numbers right from them. you even listed it yourself man 750/1400 is recomended not minimum maximum.... then at the bottom it lists sealed and ported enclosures ported it says 300-1000rms its not safe to push over 1000 in ported and then in sealed it says 300-1000rms... these speakers are built to keep up with like JL w7's to have them not be able to take 1000watts and not blow would be silly... i suggest you read the would Elemental Designs web site for the 12A... i personaly always try to read the whole site for any product before helping someone alot of times there is more to meets the eye unless you read the whole product description and not just the simple data sheet. and i'am more then willing to pay 300$ more for 3db i'am willing to pay 2000$ for 2 JL w7's i simply like the ED speakers.
What i really wanted to know was i dont under stand if i well get more db runing 1 of these at 1200watts ore 2 of them at the 600watts each... i want the most bang for my buck i would prefer a single sub and i would think one running at 1200 would put out more DB then 2 running at 600 each but i'm not sure... thats what i need awnsered.
uochronos on 01/4/2004 21:29:24
btw Munchiesyumm its not that i dont appreciate the help i always like any input but i have already choosen these subs unless someone shows me soemthing twice as good for around 100$ more or less. so when you said "Well if your info seems to be the case I would go with one sub a full power rather than two. +3d for more money? hmm... not my bag candy. " thats not really helpful i already stated i was willing to go either way i wanted to know which had DB... i want all the db i can get and choose these subs because they well give me sq too... whether its your bagh of candy or not this is my choice i just need some facts about what well net me more sound.
Buickman94 on 01/4/2004 21:41:45
Depending on how much room you have and what type of box you use, i would assume 2 would give you more output. In the right vented box, 600+ watts to each sub should be enough to utilize them to near there full potential.
uochronos on 01/4/2004 21:45:58
unfortunatly a ported box would be very difficult to fit into my truck with 2 subs... i should have mentioned that... so i'm going to have to go sealed either way.... right now i have 2 10"s in a large sealed inclosure and it barly fits.... i dont think i would be able to fit a ported enclosure for these larger subs and have enough room for it to sound ok to. so i'm going to go 2 of them sealed or one of them sealed. i was originaly going to build a ported box for them... but once i looked at the room i had i voted against it.
Munchiesyumm on 01/4/2004 21:44:30
why are you getting on my case? I was trying to help.
I posted the Recommended Power Range if you want to run them at 1,000 watts RMS by all means by my guest. I don't want to tell someone to run subs over the reccommended power rating because thats not fair to them.
I am sorry I made you mad.
uochronos on 01/4/2004 21:59:42
You didnt make me made and i wasnt "getting on your case" but you obviously did not read all the info on the 12A and where giving inaccurate info based on that... not to mention nowhere in any of it did you awnser my orginal question.... you tried to tell me alot of other stuff... i never asked if it would be better RMS rating wise i asked what would net me more DB... i'm sorry if you think i was made but i was not. i just dont want you to be giving out info without having the whole story about the speaker. i just wanted you to be aware of the fact that sometimes there is more then just the raw data list on a speaker that soemtimes you haev to read into to get an accurate idea of what the speaker is capable of... as you say you didnt want to tell somone that it was ok to run it over the recomended power but if you had read farther you would haev seen the recomended power was higher then you thought infact in a sealed enclosure they can take over 1200watts(thats from me emailing them btw) not to mention i never asked what they could handle i asked what would be louder.... again sorry if i seemed angry that was not the case just wanted you to be a little more vigilant on reading the data and giving awnsers that actualy awnser the question.
Munchiesyumm on 01/4/2004 22:10:06
okay thanks for the advise.................................
You seemed a little lost in your original post. You did not post any questions pertaining to the fact that you wanted more DB. You stated in which adding another sub on a 1200watt rms amplifer would give you +3db which is true in many cases that is the difference vs. 1200 watts pushing 1 sub to it's absolute maximum rating.
You anwsered what you wanted to know you're self.
Why you don't want to take both subs and push them 750/1000/1200watts each for maximum performance even though you considered spending 2000 on JLW7. That would definatly give you maxium DB.
You're telling me I am way off subject with my posts. Okay so you may have been asking about DB ratings and I way displaying the recommended power ratings so the sub could be used most efficiency and last the longest. What I may have been trying to point out in a roundabout way was that you would be better off using two subs to maximize DB level.
Munchiesyumm on 01/4/2004 22:39:03
Hey by the way! How about those Alpine 10 Type R's you're getting rid of them?
aww :(
uochronos on 01/4/2004 22:42:19
Havent decided yet.. i really dont want to hehe i love them i may throw them into the wifes car and just tone down on the gain on the amp... they are really beutiful subs and they sound great i hate get ride of them but i really want 12 or 15 inch subs i want to get alot more lower bass and clear... for as little power as they take though and for being 10's they sure shake the place hehe.
erikcooper on 01/5/2004 01:06:05
If you were planning to spend that much more anyway, why not get both the subs and get another amp, if you really want the max db.
uochronos on 01/5/2004 01:42:03
2400watts of power i would have to buy a new altenator then.... and i dont want to do that i want to stay at 1200watts and get teh most out of that... already at 1200watts i'm going to have to buy a top of the line battery and a smaller pulley on my alternator to run it. if i had the money to 100% upgrade my electrical system i would but just to get a custom alternator for a brand new truck would cost me around 300-400$ then there is another amp another 400-500$ so that would be another 1000$ to run 1 more speaker hehe seems a little over the top even for me...
kiaman on 01/5/2004 02:27:23
ED 12a, perfect setup (as reccomended by ED): 1.0cf sealed box 1kw of power.
Relax_The_Mind on 01/5/2004 05:40:55
I think you would be fine with one of them bad boys in a ported/slotted box... More doesnt always mean better... and yes if you did want to put two it would mean another grand or two to upgrade everything else..
RTM
uochronos on 01/6/2004 16:34:22
the problem is i still havtn got a strieght awnser almost everything posted was stuff i already new.... or haev already asked... i wanted to know what would give me more DB 1 12A running off 1000-1200watts or 2 12A's with 600watts going to each one? since they are meant to handle up to 1000watts rms i was thinking that 1 running off that would probaly be putting out more or equal to 2 with 600 going to each. but was not 100% so swez ttocs or RTM or anyone else can you help me with just that question... and either way i would have the speakers in a sealed box i personaly like the sound of a sealed better it seems mroe versitile to me and i listen to alot of differnt types of music. thanks
Relax_The_Mind on 01/6/2004 20:00:45
That is a very ify question. You say they are going in a truck so lets say you have space for a custom ported single sub box. I think that it would have a bit more SPL than two of them given half power in a "sealed" box.
Besides trial and error and actual testing. My educated guess based on experience is that 1 12A in a "well" designed port or slotted box would net more Db than 2.
Did i just repeat myself?
RTM
cplkittle on 01/6/2004 20:44:10
under normal conditions a sealed box will net a gain of +3dB
with two drivers in a sealed box the addition of the second driver gains +3dB. So one ported equals two sealed.
Porting a box properly may have an additional gain over the basic +3dB , just be careful about overexcursion. Two ported boxes will give you a +6dB gain over 2 sealed. In most cases when using the manufacturer's recommendation for a ported box, the box is only around .25-.75^ft larger than the sealed recommendation.
erikcooper on 01/6/2004 22:11:39
You still gain the +3db for having two drivers even if you half the ammount of power that they are getting?
Relax_The_Mind on 01/7/2004 12:32:22
Erikcooper...
Yes it will still gain +3Db. You have two drivers instead of one. So at any given volume it is netting approximately +3Db more than it would be than if it had one.
Not necessarily saying that two drivers will have a higher total output Db than a single driver.
Given the sharp peak of an spl curve at higher input power levels...I would generally think having enough power to reach near or at full excursion would net quite a bit more Db.
RTM
uochronos on 01/7/2004 19:13:59
man am i ever still confused.... this whole question is the hardest thing i have ever tried to fuigure out... ok so 1 speaker runnign at 1200watts in a sealed box runnign at 50% gain and 50% volume well be equal to or greater then 2 of the same subs in a ported box with 600watts going to each on at 50% gain and 50% volume? lol dont think i can get more specific then that hopefull i well be able to figure this out you guys keep giving really good awnser i just dont think i'm quite understanding it... 1 ported with 1200 watts is the same as 2 sealed with 1200watts? that is what i got from cplkittle and that seems odd to me i would then in that exact circumstance it seems the ported would be way louder...
erikcooper on 01/7/2004 21:14:54
One sealed would not net more than two ported, the ported makes it louder. I am thinking being in a truck and all you should do one in a ported and it should be louder.
uochronos on 01/8/2004 14:56:27
Umm i know that infact i believe thats what i stated at the bottom of my post is that i didnt think that was right and thats not my question. i'm looking at sealed boxes and sealed boxes only please read my last post to get the question i asked.... but i'am not using a ported box only sealed. so please everyone quite throwing out ideas about ported boxes because that doesnt have to do with my question.
erikcooper on 01/8/2004 15:38:28
In all fairness you never stated that you only wanted sealed... You only asked which would be louder, the one sub or the two subs. One would be louder in a ported box than two in a sealed box. Since you don't want ported then the +3 db gain from a second driver will probably make the 2 sealed with half power louder than the 1 sealed with full power...
compvr15s on 01/8/2004 15:36:02
in theory yes, 1 ported with 1200watts would equal 2 subs using 1200 watts, but it mostly depends on the box itself, if you have a poorly consturcted box its not gonna matter how many watts you are throwing to it, its gonna sound bad either way. but with nicely constructed boxes you dont have that problem, i myself like the sound from sealed boxes, sounds more accurate and cleaner, you also save space with sealed. but we can not tell you how loud its going to be because we dont have your vehicle, you may get alot of cabin gain since its in a truck, this can add maybe 6 more db to the sound. you are not going to notice a huge difference in 3db.
but i can tell you from my own experience that my one 12 inch solo L7 in a ported box with 600 watts was as loud or louder than my 2 12inch solo L7s were in a sealed with 600 watts each. its just hard to tell you exactly. does this help any, if not can ya restate the question you are having a problem with. good luck
uochronos on 01/8/2004 17:26:04
yes it does help and i understand that... what i want to know is this well 1 12" sub in a sealed box with 1200watts running to it be as loud as 2 12" subs in a sealed box with 600watts each.. thats what i want to know... and i like sealed better too that why i'm going with it. so please no more info on ported verses sealed i just want to know the awnser to the above question... also we are assuming that the 2 sealed 12's and the 1 sealed 12 are in the same sive boxes. just the 2 sealed ones are of course twice the size so the speakers have the same volume box either way... if there is anything not understood just ask.
compvr15s on 01/9/2004 08:19:30
heres how i look at it. if you have a single ported 1200 watt rms system compared to two 600 watt rms going to the same sub. with the ported you will gain 3 db over the sealed, plus another 3 db since you are doubling the power. with the 2 subs you will lose 3 db to each sub since you are running at half power but gain another 3 db since you have 2 subs. if im thinkin the right way(may not be its 7:30 am, and had to work last night from 10pm till 6 am. so i may be thinkin wrong) the ported will be louder. if it was mine i would get the dual sealed enclosure, it just looks kinda odd with only one sub to me unless you have a really nice custom job. you will be happy with the sealed enclosure. this is just a hard question, so many things that can affect the end results. if you have a local shop see if they have a dual sealed box and will place it in your truck to see what it sounds like. but if you are going with 1200 subs they should be loud either way. maybe swez or ttocs can elaborate more. hope my thinking didnt confuse you if so just scratch my thought and wait for others.
erikcooper on 01/9/2004 10:02:37
It probably won't confuse him compvr, but he DOESN'T want ported... lol. In actuality here it seems as if they will be the same loudness. If you gain 3db for doubling the power to one sealed, and gain 3db for having two drivers in a double sealed, it should be the same. My outlook would be, the one sealed should be the same loudness as two, and it is one whole sub cheaper...
uochronos on 01/9/2004 16:51:45
thats what i was thinkg 1200watts two 1 sub would be the saem as 600wats each to 2 subs... in sealed enclosures... i get the whole ported over sealed thing but like erik said i dont want a ported box and as far as just having 1 sub it well be a custom install i plan to make a nice box that perfectly fits in place of one of my jump seats and it well be made to mount in and match my truck so whether i have 1 or 2 subs it well look right...
cplkittle on 01/9/2004 17:51:19
ok, according to some quick experiments with winisd, one speaker at 1200w has the same SPL as 2 speakers at 600w ea if the 2 speakers share the same air space. As far as seperate enclosures, I am not sure, but I assume it will be about the same.
cplkittle on 01/9/2004 18:02:13
Also, what is the voice coil resistance of the sub you have in mind? and what 1200.1 amp are you using?
If the voice coil is 4 ohms, and you are using the JBL BP1200.1, you only get 600w at 4 ohms even if it is just one speaker. If you add another speaker at 4 ohms parallel, it will deliver 1200w at 2 ohms, therefore 2 would be louder because you are getting 2@600w ea instead of 1@600w from the same amp.
uochronos on 01/9/2004 19:04:34
i'm getting an avionixx amp to match the 12A or 15A elemental designs sub... i well be puting 1000-1200watts into the subs... the exact number of 1200was more of an estimate just trying to see if 2 times the power to a single one would be close or equal... thanks cplkittle that helped alot finaly an awnser that was simple:)
i may go with a phoenix gold amp but only if i go with 2 subs... i would much rather go with the avionixx amp since thats what elental designs suggests even though i love phoenix gold.
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