2fast4thelaw

iTrader: (1)

If you after the best sound quality and use a Zenclosure(Which I highly Recommend) Do a single 10" sub. Mono subs always sound better than multiples. When you double up subs you also double up thier distortion. All subwoofers have distortion, some less than others. Low distortion subs are very expensive so in my opinion buy 1 really good low distortion 10" sub instead of (2) cheaper subs for SQ. Brands that fit this profile, Focal, Image Dynamics, Dayton Reference High Fidelity, DLS, Diamond Audio, ect. (Power range 250WRMS to 500WRMS no real need for more)

If SPL is what you after, then throw what I said above out the window and get a pair of 10's with massive x-max excursion and power them with 1000 plus watts. This is however not for my tastes, but hey, to each is own.
Brands for this application, JL Audio, Alpine, Fosgate, ect. (Power range 500WRMS to 1000WRMS not practical to exceed this)

JimRHIT

iTrader: (6)

You couldn't be more wrong. You will in fact cut the distortion in HALF ... fact is, to gain the same SPL from a pair, you will be doing half of the mechanical work (ie - cone movement) therefore minimizing distortion.

You other statements about the better sub costing more and spending the money there are dead on, but the above quote is just plain wrong. Please be sure of things like that before you post them.

2fast4thelaw

iTrader: (1)

Please, don't take this the wrong way but I am not wrong. When you power two subs on the same amp you are working your amp twice as hard. You are not halving mechanical movemont unless the subs are wired in series. You are also creating two sets of conflicting standing waves and sub harmonics. You are moving twice as much air in theory so higher volume is percieved. Higher volume is often percieved to the uneducated ear as better sound quality. The art of achiving true SQ is to no be able to percieve or localize the subwoofer.

JimRHIT

iTrader: (6)

You are wrong and your excessive use of large words doesn't overcome that.

To create a given SPL from a transducer you need to move a certain amount of air. To create that same SPL from a surface area twice as large, you need to move half that amount.

Sub-harmonics? The main distortions you will hear from these subwoofers are second and third order ... creating a percieved loudness, not a subharmonic.

2fast4thelaw

iTrader: (1)

Dude, Sub-harmonic frequencies are 2nd and 3rd order frequencies. The fundamental frequency using an oscillator in a ratio of 1/x. For example, using an oscillator we will start at 80 Hz, sub-harmonics include 40 Hz (1/2) and 20 Hz (1/4) and so on.

You know they conceal information like this in books

JimRHIT

iTrader: (6)

Now ...Can you please stop giving people advice, and/or arguing about something you don't know.

MIAPLAYA

iTrader: (3)

I thought we had established that you knew what you were talking about. Guess not everyone got that memo...

2fast4thelaw

iTrader: (1)

Whatever dude! This discussion is now pointless and off the topic.

JimRHIT

iTrader: (6)

No .. I am making an example of you .. coming here with an assumed knowledge ... yet all you do is MIS-inform others. Please .. understand what I wrote was to be helpful ... and prove you wrong. If you want to come here and give advice acting like you know what you are talking about.... well .. at least learn some things from those of us that do first.

JimRHIT

iTrader: (6)

We are not beating a dead horse either (I resent that) .. I am showing you how you were wrong. This should be helpful to both you, and anyone that reads this thread.

Threads like these are the ones that people learn from, regardless of whether we stay on topic or not.

2fast4thelaw

iTrader: (1)

First off, you are incredibly arrogant for making the above statement.

It is you who is mis-informing everyone. Prime example! "subharmonic" key word here "SUB" Means Below, not above 80hz!

Anyway, our arguing who's wrong and who's right is not helping anyone so stop trying to undermine my knowledge. It is very arrogant of you to presume you know more than I do when you have no ideal who you are talking to.

JimRHIT

iTrader: (6)

Arrogant .. confident .. meh

And AGAIN .. the distortions you deal with in subwoofers are NOT subharmonics .. they are second and third order (mostly).

VO...

iTrader: (25)

(grabs popcorn)

perrogrande007

iTrader: (4)

fight fight fight!!!

JimRHIT

iTrader: (6)

Who am I talking to? What do you do? Please .. impress me

ZedNewbie

iTrader: (1)

*cricket noise*

MIAPLAYA

iTrader: (3)

Not to fan the flames but I don't see where he posted the 80hz waves were subharmonic. Rather he posted that distortion of an 80hz wave is a 2nd or 3rd order. He even questioned the word subharmonic in your post. Then again I know far less then Jim as he well knows.

JimRHIT

iTrader: (6)

I clarified to others the benefit of two transducers of a giver surface area vs one (after he misinformed us about the distortions from a pair)

I stated that there are no subharmonics, only harmonics (in order to clarify the misinformation in his post)

Then I clarified to him what 2nd and 3rd order distortions are (after he incorrectly claimed they were subharmonics)

I don't see where I mis-informed ... but if I did .. I'd like to know.

perrogrande007

iTrader: (4)

With two drivers you need much less power to do the same amount of work. As long as you push the drivers to their RMS with clean power, how much distortion could you possibly have, considering that you tune the system correctly? There's always going to be distortion in any system, but that doesn't mean that it will be audible, am I correct?

limeg35

iTrader: (1)

So, whats the conclusion here? is 1 sub better than 2 or 2 is better than 1 for SQ's? does sub frequencies plays in part of SQ judging?