is it worth it to get another sub?

I'm sorry if youve seen my posts somewhat similar, but i hsve 2 10 inch subs and i'm thinking about getting a third. Would it be much louder or no?

forbidden wrote: Free advice, don't do it. It is not worth the investment into it for little to no increase in output. Then you have to tackle the issue of how to power it properly with the amp you have now.

NO!! Dude. You have asked this same question, three times, in three different NEW threads, in opposition to the forum rules. YOU WILL BARELY NOTICE A DIFFERENCE, and that is if you can power all three woofers WITH THE SAME POWER YOU ARE FEEDING EACH OF YOUR EXISTING TWO: "750" watts each! Unless you are adding another amplifier, you will not be able to do that, as your impedance will go UP, causing the amplifier to make quite a bit LESS power per woofer. You will HAVE to add TWO more woofers, powered EXACTLY THE WAY YOUR EXISTING TWO ARE NOW, (basically, you will have to double your existing system) to hear any difference. You cannot have three 2-ohm, DVC woofers and load the amplifier to 1 ohm per channel. I have answered all three times for you now... Rob recommended against it for the same reasons... I suspect you won't be happy with this answer either, so I give up... Do whatever the hell you want... Get the third woofer, or don't, but stop asking if it will make a difference if you add one more! It won't!It all reminds me of something that Molière once said to Guy de Maupassant at a café in Vienna: "That's nice. You should write it down."

theyd all be in their own box so i could wire it to 1 ohm and i wouldnt have to tackle any amp problem....i think i'm just going to build i nice big box for them

whitemike0110 wrote: theyd all be in their own box so i could wire it to 1 ohm and i wouldnt have to tackle any amp problem....i think i'm just going to build i nice big box for them

You go, boy. Obviously, you have some magic recipe or new formulas that *WE* know nothing about. You are gonna get 100dB gain! Oh, wait... was that TOO sarcastic? I guess I can't give up, yet. Hey, dude! EVEN IF you COULD get one ohm, with three 2-ohm DVC woofers (which you can't) you would STILL be sharing the *claimed* 1500 watts THREE ways - only 500 watts per woofer - decreasing the peak output available by the first two by 1dB EACH. A net loss of 2dB, from the original two woofers, adding 1.5dB back in, by increasing the surface area by 50%, you will still end up ONE HALF OF ONE dB BELOW WHERE YOU STARTED!!!! This is ALSO before you figure in the fact that the amplifier IS NOT GOING TO BE MAKING 1500 WATTS! Once you realize the impedance goes up, and you do the math, you are going to see that you are throwing money away! END OF STORY! ADDING ONE WOOFER WITH THE SAME AMPLIFIER POWER WILL BE A NET LOSS! You will be quieter with three, than you are with two!

KPierson wrote: What does the subs being in their own box have to do with impedence?

I think he probably knows what he's doing... It's obvious *we* have no idea what we're talking about!

KPierson wrote: Also, how are you going to get a 1 ohm load with three 2 ohm DVC subs?

Huh... Too bad nobody *else* has mentioned THIS little monkeywrench in the works... I'm starting to feel like i am an (invisible) idiot from a few threads back... Am I even here? What am I doing with all this typing?It all reminds me of something that Molière once said to Guy de Maupassant at a café in Vienna: "That's nice. You should write it down."

Damn you guy's get pretty loving wized over a question. I mean can you understand where i'm coming from, if i add a whole nother sub with another enclosure that it would be louder. To me that would be common sense, but i guess with subs and SPL's and doodie like that it wont worry. I guess i apologize for trying to GET A STRAIGHT ANSWER...the last dude was straight forward and now, hell no i'm not getting a third. And i can run ohm 1 as long as their in their own box. All that needs to be said. Wired parallel individually at 1 ohm....

KPierson wrote: OK, I gotta ask. What does the subs being in their own box have to do with impedence? Also, how are you going to get a 1 ohm load with three 2 ohm DVC subs?

It would be a 1.3 ohm load which is an amp capable at 1 ohm obviously could run with this.

no it doesn't matter if their in their own boxes or not...Most people wire their subs together if their in the same box...so let's say i had one dual 2ohm sub and bridged it....1 ohm load...if i add the exact same set up to the amp bridged...1 ohm load...and another...1 ohm load...it's exactly the same setup as the first one. AND haemphyst.....i was talking about running 1500 watts on them...if it'd be smart or not...i'm running 500 watts a peice...if i did add another sub...theyd be brigded runnin at 1500RMS 500 so what your sayin about loosing 1db because of a lose of 250w...but thats not the case...it would be a plus a sub plus 500watts.

Again, your math is off... Your amplifier WILL NOT BE MAKING THE SAME AMOUNT OF POWER, as you will not have the same impedance. Your impedance will be higher, so your amp CANNOT make the same amount of power. Ohm's Law, baby! Perhaps you should learn it, know it, LIVE it... Three 2-ohm DVC woofers, can be wired to 1 ohm each. Wire all three of THOSE in series, and you get 3 ohms. Connected to an amp in bridged mode, and your amplifier is "seeing" 1.5 ohms per channel. That is roughly a 33% decrease in available amplifier power. That is also the only safe mode, while still getting maximum available power. 1500w - 33% = 1000w 1000w / 3 woofers = 330 watts per woofer 330w is actually LESS than half of your current 750w 330w per woofer vs. 750w per woofer = ABOUT a 3dB loss per woofer 3dB + 3dB = 6dB loss from reference 6dB off reference + 1.5dB from a 50% diaphragm increase = 4.5dB loss from reference Those are solid numbers. Is that straight enough for you? You WILL be quieter - 4.5dB quieter! - maybe you'll hear it, maybe you wont - but it WILL be less output with three woofers than it is with two woofers, using the same amplifier. You HAVE to allow the same amount of power PER WOOFER if you expect it to be louder. That means you would have to connect an amplifier that can make 2200 watts, into the available 1.5 ohm load. THAT is JUST to be even detectably louder! You have to go to 3kW and 4 woofers to be SURE that you are DETECTABLY (to the human ear) louder! Dude! Can't argue with Ohm's Law... This is why EVERYBODY that has answered you has mentioned this! KP - no sweat, mang!It all reminds me of something that Molière once said to Guy de Maupassant at a café in Vienna: "That's nice. You should write it down."