build ?

[Nutdawg651]

say i put 1 15 and 2 12s same amps .....power clamped...... and series subs ....runnig 1000 rms to the15 and 1000 to bth 12s facing the same way sealed would it work

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[Jeffdachef 5,000+ posts]

are you comparing which setup is louder or are you saying if its okay to run 1 15 and 2 12s?

 

[mylows10 5,000+ posts]

You'll prolly have cancellation issues. Not good to mix sub sizes

 

[2Dcore 10+ year member]

People on here frown on it but I have done it in the past and I got to say it did slam for what it was but yes it won't hurt anything as long as you know your final ohm load.

 

[naughtyca 10+ year member]

i dont even like the 3 sub set up, but different sizes, not sure. Is there a reason why you are doing this?

 

[bubbagumper6 5,000+ posts]

Generally when you have different sized speakers you want to cross them over so they don't try and play the same frequency ranges...

 

[UsAmpsFreak]

Generally when you have different sized speakers you want to cross them over so they don't try and play the same frequency ranges...

12's and 15's have no problem covering the same frequency ranges so i'm not sure what logic would cause that response. There's nothing wrong with it although it's typically not done by a legit shop or installer. It should basically sound just like 2 15's would, if not a bit louder. I would put them all on the same amp if you can line up the impedance to make it work so you're not having to match level's. But all in all it'll work, you'll just get a lot of people on here frowning on the idea although it can work just fine.

 

[Jeffdachef 5,000+ posts]

it'll be loud but it'll sound funny, i've tried multiple size setups before, sound quality takes a huge drop regardless of the countless box experiments i did. But it will be louder than just 1 15.

 

[UsAmpsFreak]

it'll be loud but it'll sound funny, i've tried multiple size setups before, sound quality takes a huge drop regardless of the countless box experiments i did. But it will be louder than just 1 15.

If you do it make sure they are in the same enclosure and on the same amp. Otherwise what the above poster said will happen.

 

[Jeffdachef 5,000+ posts]

If you do it make sure they are in the same enclosure and on the same amp. Otherwise what the above poster said will happen.

In some of the experiments they were in the same box and they have always been on the same amp, always have phase issues when running multiple sub sizes, generally not worth it, he should sell the 12s and get a matching 15 instead or vice versa

 

[bubbagumper6 5,000+ posts]

12's and 15's have no problem covering the same frequency ranges so i'm not sure what logic would cause that response.

Independently, yes. I didn't say they weren't capable of playing the same frequency ranges, I said you wouldn't want them to.