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NOBODY IS SAYING OR HAS EVER SAID PUT THE SUB IN THE AIR!!!!!!!    :roll:  

A 3 way cabinet doesn't have nor utilize a sub in it anymore than a 2 way cabinet!!!!     A 3 way cabinet is NO DIFFERENT than a 2 way cabinet except the added midrange.  Your Yamaha Club 115 are a 2 way cabinet, a woofer & a horn.  Your 2 way cabinet is on a pole with a sub on the floor with them for the added bass - thus making it a 3 way system, it does not change the fact that you have 2 way tops.  If your tops were 3 way, you would most likely still run a sub & yes the sub would be on the floor while the 3 way box is on the pole IN THE AIR thus making it a 4 way system.  A 3 way cabinet doesn't add anymore bass wise than a 2 way cabinet, it DOES help clean up the midrange frequencies - nothing more!  Is it needed in most karaoke situations, no probably not as they are usually a little more expensive & most properly powered 2 way cabinets more than do the trick.
If needed, a sub would/could be used with either a 2 way or a 3 way cabinet!!!!  :banghead:

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Lonnie, you'd think that since BD's been doing it this long he would have known long ago the difference between a 2 and a 3 way and the need of a sub regardless of which one you use for a full sound.

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Well you & I & others here that know how to run sound equipment know that but even in many situations a sub may not be needed, smaller rooms for example.  I prefer to use at least 1 sub in all my shows, but that's just me.  Others get locked into one way of thinking & don't believe anything else will work except what they believe, use or do!

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While it is true that is common to put the bass bins on the floor it is not a hard clad rule. Bass travels in more mediums than mids or lows. I live on the 8th floor oh a high rise. If somebody drives by below with windows up and loud music all I can hear is bass. You could hang a bass on the ceiling pointed down and the horns horizontal 4 rooms down all you would hear is the bass. It penetrates walls and goes around corners and its not all vibration. Bass is actually sometimes easier to distribute because it can be controlled with phase (added or subtracted), direction and traps. Next time you are in a lightening storm see what is loudest the strike or the rumble of the thunder... See what I mean?

Another consideretion is this A sqaure wave which goes from nothing to max in a short amount of time has a leading ege or trailing edge which is a high frequency component. This is the component that travels farther in high freq terms.  It is not rocket science but just common sense..

Another analogy of 2 way vesus 3 way is this... Would you rather hear one church bell or several at once?

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Maybe i'm tired, this analogy went right over me?  

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 LMAO



Me too....Let me try another one.....Plunk one e string on a guitar Then plunk both e strings or more at e note. The 3 way sounds better because the speakers add .......Maybe......

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To me a 3-way speaker has always meant it had low, mid and high.     Crossed over 3 ways.      2-way has a mid and a high, crossed over 2 ways.

Now are you are saying that a 3-way speaker has 2 different mids and a high? (Making 3 speakers)    And one of them is not a bass speaker.      How is it crossed over.   That is what determines 2-3way.

Mid range is mid range, whether it has 1 speaker or 14.    One crossover for the mid range.

I have seen car stereos that have 2 or 3 speaker cones in one basket.      These were called 2-3 way speakers also.     Meaning they had low, mid and high range all in one.

Now if a box has 3 speakers and one of them is the bass and one is the mid and one is the high, to me it's a 3 way speaker.   My tops are 2 way.    2 speakers or actually one speaker and one horn.      The speakers you pictured are 3-way.  Do they have a bass speaker?   If they do and it's crossed over 3 ways, that's what I'm talking about.     If they sit on the floor they are useless, because the horn will get lost.

The highs are more directional and need to be above obstacles in the room. The mids are not radically affected like the highs and lows.  The overall sound distribution depends on the spl's, room size (distance of sound travel) the ceiling height, the material used ie hard wood sheet rock etc.  


In the military I worked on a missle guidance radar. It had a parabolic antenna with a feed horn (offset)that rotated 900 per second.  If you talked directly at the antenna and aimed it directly at someone several hundred yards away they could hear you as if you were standing right next to them... It was changing the pitch of the voice at a 900 cycle rate and throwing it.  That is essentially what flange does too...

The dual cone speakers were somewhat effective though not as efficient as multiple speakers..

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A 2 way speaker cabinet such as yours has 1 low frequency driver & 1 high frequency driver.  It has a passive crossover that divides the frequencies to each speaker.  Your speakers capable frequency capacity will go as low as 55hz to a high of 16khz.  The crossover divides the frequencies to send to each driver.  Your speaker happens to divide those frequencies at 1.7khz or 1700 hz.  Meaning the 15" low frequency driver will handle all the low frequencies from 55 hz up to the the low mid point of 1.7khz.  The high frequency driver will handle all the freqencies ie high mid & highs from 1.7khz on up to 16khz.  So yes your 2 way speaker HAS a low frequency driver that not only handles lows BUT also handles some of the midrange as well & the high frequency driver handles some of the midrange and the high frequencies.
A 3 way speaker has 1 low frequency driver, 1 midrange driver & 1 high frequency driver.  Using the Peavey SP3 as an example.  That speaker can handle a frequency response of about the same - 54hz-16khz.  It also has a passive crossover built in to divide & send a specific set of frequencies to each driver.  This particular model is crossed over at 650hz & 2.1khz (or 2100 hz).  This means the 15" low driver will handle the same low frequencies as the 2 way, but it don't have to try & reproduce mid frequencies.  It will push from 54hz - 650hz, the midrange driver handles from 650hz - 2.1khz & the high driver handles the 2.1khz to 16khz not having to try & reproduce the higher mid frequencies as much.  
Now both speakers represent pretty much the same frequency spectrum, but they are divided up differently to allow each driver to do a more efficient job in reproducing the frequencies they were designed to do.  Now when you add a PROPERLY crossed over subwoofer into the equation, the sub would handle the low frequencies up to say 100hz, THEN the 15" low driver would begin it's frequency curve at 100hz to it's next crossover point that it would normally.  

So once again, there is no difference in a 2 way speaker which has a low & high frequency driver over a 3 way which has a low, mid AND high frequency driver.  The 2 way just makes the low frequency & high frequency reproduce all the mid frequencies as well.  Which is why either cabinet would still benefit from being put in the air.  They both will produce the same amount of bass, when used with a sub - properly crossed over, the bass won't drop down as low since the sub will be taking the low frequencies!  The sub you are using has a frequency response of 30hz - 2khz, there is no crossover built into this sub so it is actually trying to reproduce frequencies your tops are already producing which actually can cause phase cancellation & you start losing those frequnecies altogether - BTW.  Which also means you 2 way tops low frequency driver is also trying to reproduce all the low frequencies that should be left for the sub.  Which is why an electronic crossover & an added amp would be of much benefit for your sound, you think it sounds great now, imagine what the system would sound like when it is properly crossed over with the correct power pushing behind it.
TECHNICALLY, a 2 way cabinet is only crossed over at 1 point to send to 2 separate drivers & a 3 way cabinet is crossed over at 2 points to send to 3 separate drivers.
The speakers I pictured are 3 way - 1 low, 1 mid, 1 horn (highs).  The S115 YOU have are 2 way - 1 low, 1 horn (highs).  When you add a sub to either cab - again properly crossed over, it will effectiver make a 2 way cabinet into a 3 way system & a 3 way cabinet into a 4 way system.
The diagram below is rough, but will give you an example as to how both speakers will reproduce the same frequency bandwidth, but how the crossover actually divides them into each drivers.  You can see the 2 way cabinet is still producing midrange as well as lows & highs, but the low & high driver dip into the midrange spectrum but in the 3 way, the midrange driver takes care of it's own frequencies so the low & high driver don't have to.

You can also see in diagram 2 your Yamaha sub & satellite combo.  Your sub has no crossover built in so it's actually trying to reproduce more midrange than the 15" low driver.  The sub outline is in red.  So in the same spectrum, the low frequency driver in the top 2 way cab is also trying to reproduce the lowest frequencies it can as well that should be left to the sub alone.

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So.... If Given A Choice Between CARVIN-1584.s (Which Are 3-Way Speakers) Or YAMAHA-SII5 CLUB SERIES (Which Are 2-Way Speakers) Which Would You Choose For Karaoke?

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short and simple...every room is different use your ears and equalize the room

HUH?

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Well if those were my 2 choices, I would actually opt for the Carvin set - simply because they can also be bi-amped without doing any rewiring - I use external crossovers & multiple amps for my speaker systems so a speaker that is bi-amp/tri-amp capable is a big need for me.  The Yamaha 2 ways are not bi-amp ready within their own cabinet.

Both sets are good speakers though.

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Folks,
 I have a set of the Carvin 1584's and 1801 subs.  I drive them with a 4 channel carvin amp and they sound great.  I posted here in January/February before making my purchase when I was looking at JBLs and Cerwin Vegas... After alot of runing around I decided to go with the 3 way - 1584's.  

I use this set up for Karaoke and for my 7 piece classic rock band.  The have a very full sound.  I run a Mackie board, a hint of BBE's 482 sonic maximizer, Carvin's independent reverb/effects module for my mics and most folks think the sound is incredible...  I do agree that if you have good speakers 2-way or 3-way, quality amp, and a good EQ/Crossover you can optimize the sound so that most people will think it sounds good.    Unfortunately my ears are a bit picky... To me the mid range clarity of the 1584s, without much tweaking sounds very warm.   I love them!  We stopped using our 15 inch Eons...  Unfortuately there are no measures/metrics to my "warm" sound preference or why the 1854s sounds great to my ears...  Given my experience with the 1584s, I play outside gigs alot, I will continue to buy 3-ways and run separte subs.

I also agree with Lonman that a sub make all the difference in the world in adding extra depth...  Especially outside where you have to push alot more sound..

Best Regards,
BigBobVA

Thank you, BigBob, for confirming what I have been saying all along.  The Carvin 1584s are great speakers.  They sounded good when I had them even though I was only driving them with 200 watts at 8 ohms with the Carvin PA1200C.  I have listened to the tri-amped Carvin 1584As at the Carvin store and those sounded even better.  When the sales person added the SW1801 to the mix, I felt like I was in a club.  That's how good the system sounded to me.  Unfortunately, they are too big for me.

FWIW, I am also very happy with my downsized system.  The Yorkville NX55Ps and Carvin TRX118B is a great set up and gets really loud with a lot of headroom to spare.  After several days of tweaking, I finally found the right EQ and crossover settings that sound great.  It is indeed possible to get good vocals even from 2-way speakers if you take the time to find that optimum setting.  The addition of the DBX compressor/limiter also helped clean up the sound.  

Anyway, 2-way or 3-way does not really matter.  Those of you who are happy with 2-way speakers, more power to you.  Having previously used 3-way speakers, I must also say that, for vocals, it is hard to beat the warmth of those speakers.

JMO.

Hey, Carvin just came out with a new line of speakers, The LS Series!  The LS1503 is 3-way also but smaller and lighter than the 1584.  There is also a tri-amped version, the LS1503A.  I gotta check these out when they have them at the store.  I'm interested in the small monitor, the LS1002.