SEAS Excel Magnesium Midwoofer 51/2 inches ROCK SOLID BASS


Just measured the  edge of surround, it is 5 1/2 inches across.
I am getting TONs or ROCK SOLID BASS.
Does anyone still believe in the woofer theory, bigger is better??

Especially taking room size into acct, Yeah if you havea  palace size room, maybe you want to fill it with bass, soa  8 inch/10 ibch might work for you
I think we should always bring up room size in discussion ofa  ideal speaker bass response.
also note, bass is bass,, well not really, Cone material and how cone is labed makes a  big difference. This SEAS Excel has FREE moving  membrane around the solid copper phase pluf. 
also in considertion is how well doesa  mid woofer/woofer  both voice the upper low fq's to meet  with either a  midrange(which i hate) and a  midtweet. 
I think SEAS hit on the perfect idea of allowing the come to move freely indepent of the solid copper phase plug. 
 Giving a  natural bass response  and adding  the fullest possible bass extention due to its undersized 5.5 cone. 
+ its my guess this magnesiusm material is superior to the old standard paper. 
I know B& W also boasts a  unique cone material, that cool looking yellow fabric,,but i am not at all keen on how their midwoofers voice the upper low fq's. Its too colored for my taste.
So yeah I bought a  sub system to catch the lowest fq's, but as my tech guy says, ,, for what? and suggested that dayton sub amp witha   Cerwin Vega 10 inch,, will only add some dull boominess, with no fidelity (have both for sale on Craiglist cheap) , I always believed maybe I should try to gather the lowest fq's missing in the 5.5 inch midwoofers,,, But really there is not much going on in the 20-30 hz area anyway. 
It would only add this dull  boomy noise.

Somehow Seas Tested and figured out the 5 1/2 inch mid is the best of both worlds,, meets the required low fq register and also meets the Millennium midtweet at a  higher fq  junction making ita  seamless transparent high fidelity image.
At least thats what i am now finally hearing after  upgrading  and repairing my newly acquired Jadis DPL.
IOW the Thors have come alive after all these 18 years when driven with high quality components. 

The Q is,  what is the advantage of havinga  woofer larger than 6/7 (foam edge to foam edge) inches in a speaker design? To what benifit?
Also we should consider how a   specific 6/7 midwoofer voices the upper low fq's that meet the midtweeter. 
This could bea  issue, where the tweet has one particular voice and the widwoifer has a  slightly dif voicing. 
=  will sound like crap.
I think Seas tested all these  critical parimeters and came up with theie Excel line, some 20 years ago,, I am now curious to their new Flagship design the Cresendo + Nextel midwoofer 2 way.
Taking High Fidelity into the 21st century and ,,,beyond.....
I am on the fence should i add this Bifrost as a 2nd speaker,,, or upgrade my Thors xover with all Mundorf Silver caps/ ULTRA resistors/ top of line coils

https://www.youtube.com/watch?v=zqUDP4Byyo4
mozartfan
I'm confused, the Seas Thor uses 2 x W18E001 (7")

WEll what i mean to say is although it is described as a  7 inch midwoofer,, if you measure the acutal foam edge to edge , it comes to 5 1/2 inches,, thats tiny, but does the job nicely..
sure as stated above depends on rm size,, my room is like 10 X12, 8 ft ceiling, small, but it is what it is. 
I am about 8 ft from speakers, ,I have gain low, not even 1/4 turn on Jadis DPL. Never in my 40 yrs as audiophile , care for/enjoy *loudness*. There is a point where i am comfortable after that gain,,whats the point of having more db level???
= I am not a  true audiophile, Loud to me is pointless/meaningless. 


@oldhvybelow a  7/5.5 midwoofer, , as in your 4 inch,,thats too tiny, the bass will not be sufficient. 
~~NOTE~~~ when i used the descript **SLAMMMM* above,, I was of course exaggerating, just trying to draw attention to the observation that **really** in a normal size listening enviornment, a  7 inch/5.5 actual midwoofer offers more than enough bass to satisfy the criterion of a  audiophiles demand for bass slam. 
Slam as in true hi fidelity(tight, subtle, clean, gorgeous...,,not slam as in hiphop , R&R, Grunge genre, which is just like bombs going off.  
It might be true though the SEAS EXCEL W22 or even W26 , may offer a bass which is even more luxuorious , sublime than the W18, , Thing is , how to xover  the W22/26 to  a  midtweet successfully. 
This is where the SEAS engineers came across  isues, The W22/26 offered too much bass, and  so overwhelmed the balances of lower midrage/midrage/uppermidrange fq's. 
Things were not balanced. So the perfect match could only  be the W18, 5 1/2 inch cone. = Done Deal = Case closed. 
W18 King of all bass/low midrange fq's  for regular/normal size listening enviornments and the most ideally perfect driver to meet the xover to a  midtweet. 


Combine 2 Seas 5.5" w15 midwoofers with a transmission line and you are going to get  deep bass with punchy midbass in most normal sized rooms.

https://www.salksound.com/model.php?model=Supercharged+SongTower


Can not find any YT vids showing the W15 as having **deep** bass, as you claim,,I just can not imagine a  4 inch cone, W15 as having **deep* bass. 
Not sure why Sulk ever decided to employ a  W15 in  a  MTM...
IMHO SEAS finest speakers are the W18 Excel and Millennium midtweet. 
These are their Flagships, inspite of Seas' claim that the Cresendo and Nextel are their Flagships.