single driver speakers


Someone please help me out here...

I am struggling to understand how a single driver system can sound anywhere near as good as a multiple-driver system with crossovers...

I understand that crossovers and multiple drivers can have issues with interference, phase, etc - but those drawbacks would seem to be vastly outweighed by the increased frequency response and clarity within a frequency spectrum that a multi-driver system produces.

I see these

https://www.audiogon.com/listings/lis8ij2i-voxativ-ampeggio-due-70-off-priced-to-move-full-range

and just can not wrap my mind around how they could sound better than a multi-driver system costing 1/10 as much. (no knock intended on the seller of these speakers, I was just browsing listings and saw them so it made me wonder)

Thanks!
babyseaotter99

nickolaspappas
27 posts
05-11-2019 12:05pm
You can’t understand what “coherent” means until you’ve heard a good single driver speaker. They have their weaknesses (like everything), but they have a naturalness and coherence that nothing else can compete with.

~~~~~~~~~~~~~~~~~~~~
Exactly,
I've been experiementing with various cheap chinese *full range/point source* drivers,
Reaction: WOWWW,.
Out came the brand new Millennium tweeters ($700 sold on ebay $300 $400+ loss in 1 month)
Now a  4 inch *full range takes its place along with a  1963 horn, combo annihilates the top of the line dome tweeter.
**weaknesses*
Maybe a tad bass shy, maybe a  tad roll off in highs, MAYBE, not sure as i've not heard the new high tech PS drivers in person.
But from some research. those *weaknesses*  can easily be forgiven , when we look at the plethora, abundant weaknesses inherent in xover/box designs. 
After hearing this cheap PS, there is no xover/box design that would eve offera  slight interest, not even Troel Gravesen's Seas/Scapspeak world class designs are of any interest whatsoever.
The only speakers that exist for me are the new high tech Point Source/Field Coils.
All others are dinasaurs. 
If I need bass, I can easily find bass, If I need highs I can easily find highs to help out a  single source speaker.
Its the mids which are the single most critical fq range which TG's designs fail in. 
Yes if you are listening Troels, your speakers are a  *wet blanket* vs the new high tech PS/FC designs. 
Will Scanspeak/Seas ever come around to accepting the new high tech?
Doubt it, Both are old school, not in step with the modern world. 
Ask yourself, are you in the old world technology or are you willing to enter into The New 21st C Speaker Experience.
This is what every audiophile should ask themselves. 
The Hifi Guy
New Orleans


larryi
2,527 posts
05-22-2018 1:38pm

I like full-range drivers, but, I particularly like them as extended range drivers in multi-driver systems. The Jensen/ERPI M-10 field-coil driver with a tweeter, as an example, makes quite an extraordinary system. I also heard a two-way system using the Japanese GIP-4165 field-coil driver (Western Electric clone) and that was killer good too.

As for true full range, single driver systems, the best I've heard is probably the Charney with the Voxativ driver. It delivered the speed and immediacy of single driver systems without sounding harsh, nasal and peaked in the upper midrange and treble range; the primary shortcoming was a lack of high frequency extension. Voxative also makes a very good sounding full range system using its own drivers. A friend utilized a field-coil Feastrix driver in a nice custom system, but, it really needed something to boost the bass response.

~~~~~~~~~~~~~~~~~~~~~
Yes I am usinga  4 inch point source (DL off ebay, $200) with a  1963 Magnovox horn tweeter, Wonderful combo, beats any xover/box design I've ever heard in my experience of 40 years. 
Jensen made incredible FC's back in its day. 
The Vox you speak of, is not far off entering my system, maybe late September.
I have bass, so not at all important if the Vox rolls on the low end. High end either, the horn will come in handy, if not needed, off it goes. 
Might end up as a   3 way.
W18E001's dual each channel, + Vox + Magnovox horn. 
We;'ll have to see how testing goes,

btw I've listened to some YT clips of the Feastrex,  speaker seemed a  bit bass shy.  
And at that price, you would expect, solid bass. 
However, Feastrex does offer many models, particularilly their massive NEO magnet driver. But these are out my budget.
The AER lab/germany also  sound  very special, but  not in  my budget. 
 
11,267 views
40 posts = proves my point
Folks are completely unaware, _______, of this new 21st C technology that has been around since 1929.
All I can say is
Unreal.
The Hifi Guy
Someone please help me out here...

I am struggling to understand

~~~~~~~~~~~~~~
For 2 years I would look and look, and look over DL's PS drivers on ebay,,having no clue what they were all about, But maybe they were more than something cool looking.
I finally figured out what you , back then in 2018, were *struggling** to grasp.
I;ve got the whole equation, puzzle all figured out now.
Took some experimentation, and thinking, thinking, pondering, tweaking, adding, subtracting.
I just hung on and now have all the answers.
The PS technology is from 1929, and  had some developments over the years, 
Then died away completely, Now has resurfaced as 
The New 21st C Super High Tech Speakers. 
My guess is , if the Tampa bay Audio Show has these New tech speakers, news will spread like wildfire, and you will have a wait time of months to get your order filled. These things are not mass produced. But surely worth the wait. 

Good quality single driver speakers tend to excel in coherency, which to me is a key ingredient for the highest quality sound. That to me alone explains the attraction, regardless of the downside. All designs have advantages and disadvantages. How those factor into a final value judgement is completely up to the individual.

There are also many time and or phase "coherent" multi-driver designs out there to compete. Ohm Walsh/CLS, Thiel, Kef UniQ, Tannoy concentric driver designs, mbl, for example, are some that come to mind. I currently own both Ohm Walsh/CLS (coherent line source) and kef UniQ-based speakers (ls 50s and ls 50 metas).

I’m a tough sell personally for any speaker design that is not inherently "coherent" .

Large speakers with multiple drivers all spread out seldom cut it for me in comparison. Requires a very large room for those to integrate time coherently at ones listening location.