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Elemental Designs A7S-450 vs MFW-15

post #1 of 21
Thread Starter 
OK. I have had the A7S-450 in my theater for a week or so now and I thought I'd put down some impressions and differences between this eD sub and the MFW-15 (duals)

The MFW's are excellent subs (when working properly) as many people already know. They are deep, loud, and although a little sloppy at times due to the ported design and cheap driver an all around good sub for home theater.

The one thing I was never really sure about (and now I am) was their performance for music. Upon initial review I felt they were very articulate for music but as time has gone on they have become a little more sloppy (maybe from a couple years of play) and can not even compare to the eD sealed design.

The eD A7S-450 is without a doubt as powerful if not more so than a pair of MFW-15's. That's not to criticize the MFW's at all, and certainly with a bigger driver and a HUGE 1300 watt amplifier it is what I expected. What I was very suprised at is how quick the eD sub actually is. This is my first experience with a sealed sub and I have to say I think i'm sold on that design.

While watching WAR OF THE WORLDS last night I was absolutely blown away at not only how powerful the eD sub is, but how deep it reaches. I was led to believe that a sealed sub would not get as deep, but that is definitely NOT TRUE. The eD sub reaches deeper, with more power and impact by far than the MFW's.

I am sitting about 20 feet away from my subs in a VERY large room, and with the MFW's the house shakes and the bass is very good, but with the eD sub the back of my chair actually flaps! My buddy was over and said that he felt as if the couch was actually moving across the floor...and not just vibrating the way it does with the MFW's.

The impact of the bass punch is also unbelievable and I'm assuming again this is due to the sealed design and the very powerful amp being used in this unit. Explosions, gun fire etc provide a real punch to the chest feeling which I'm SURE would be increased 10 fold if I were in a better room (and smaller) but even as it is with 16ft ceilings and a room opening up to my upper floor kitchen I still feel like I'm getting kicked in the chest.

Now...I have had several subs in my house, Def Tech's, Paradigms, HSU, JBL, MFW's etc....and by far this A7S-450 is the most powerful, musical sub I have ever had. I sort of expected less since the amp is not a servo design, but I now know that it's not needed. I think it might be better still if it was, but it's certainly not necessary.

I have spent some time with a Paradigm Servo 15 v2 and this eD is by far a better sub....for both impact, depth, and articulation.

I'll be spending a lot more time listening to the eD with music, but playing some Pink Floyd, classical, rock, and techno/house/rap I have to say this sub can pretty much handle everything you throw at it.

I really thought I'd hate the finish (truck bed liner paint) but....it's actually not that bad. It is in NO WAY as beautiful as the MFW's I have (sadly). It's more utilitarian looking. I have not seen their new finishes offered by eD, but they must be better than this finish on mine.

I would say that if eD can get their subs to be better looking (I would suggest a piano black finish) at the same price of their base price of now $850.00 shipping included they would have the all around winner in the mid level sub for home theater. And I ONLY say "mid level" due to the excellent price, and NOT due to it's performance. For performance I'd have to give it one of the highest ratings.

What I would really like to do next is compare a "turbo" MFW-15 vs the A7S-450. I think that would be very interesting, and it might be doable if I can ever get over to Kevin's place to compare.

I'll look into getting an spl meter to measure the differences between the dual MFWs and the eD sub possibly later this weekend...but not sure because I'm wrapped up in home renovations.

Anyways, I am writing this mini review as requested by some who have been contemplating the eD subs. I would not hesitate to try one out after hearing this. I'd really like to give the A7 450 ported version a try.

The only criticism I have regarding the eD sub again is that the finish is very basic and utilitarian... If they can overcome that with some nicer finishes at the same price (or maybe only $50-$100 more) I think they will not be able to be beaten by anyone else. As it stands now with the "matt finish" it is an incredible sub performance wise..but...it's the kinda sub that for me at least I'd rather hide than show off. Just my .02

The only other thing I'm not super impressed with is the grill. It doesn't fit on the posts very tightly and I'm thinking it might fall off, although that hasn't happened yet.
post #2 of 21
Your more than welcome anytime to come over and take a listen to the TURBO.....

I should be home all day on sat, Sunday if the weather is good I wont be around as there is a benefit for a friend who lost his wife in a motorcycle crash in Dayton oh and a bunch of us from the area are riding down.

Other than that just about any time works for me
post #3 of 21
Thread Starter 
Quote:
Originally Posted by sandbagger View Post

Your more than welcome anytime to come over and take a listen to the TURBO.....

I should be home all day on sat, Sunday if the weather is good I wont be around as there is a benefit for a friend who lost his wife in a motorcycle crash in Dayton oh and a bunch of us from the area are riding down.

Other than that just about any time works for me

I am going to take you up on that one of these days. Just have too much stuff on the go right now. Thx for the offer again
post #4 of 21
Quote:
Originally Posted by Pure-Evil View Post

I'll look into getting an spl meter to measure the differences between the dual MFWs and the eD sub possibly later this weekend...but not sure because I'm wrapped up in home renovations.

Anything new on this to report?
post #5 of 21
Thread Starter 
Nope sorry. I'm still loving the eD tho
post #6 of 21
Quote:
Originally Posted by Pure-Evil View Post

Nope sorry. I'm still loving the eD tho

I just hope the amp on that thing lasts for you.
post #7 of 21
It seems very doubtful that one A7S-450 would be equal to or surpass the performance of dual mfws...

How were the subs calibrated? Are both of the amps on the mfws working properly?
post #8 of 21
Quote:
Originally Posted by Interspy24 View Post

It seems very doubtful that one A7S-450 would be equal to or surpass the performance of dual mfws...

How were the subs calibrated? Are both of the amps on the mfws working properly?

Now we're getting somewhere! I was a bit suspicious of that claim as well and am very interested in hearing some good accurate measurements from P-E...

I know he won't let us all down!
post #9 of 21
Quote:
Originally Posted by Interspy24 View Post

It seems very doubtful that one A7S-450 would be equal to or surpass the performance of dual mfws...

How were the subs calibrated? Are both of the amps on the mfws working properly?

I was a little surprised at this as well, especially taking into account the sealed design and internal volume of the A7-450. I wouldn't be surprised if the A7S-450 went a little deeper.

I guess if Pure-Evil is happy, that is the most important thing.
post #10 of 21
Thread Starter 
The eD definitely goes deeper, has more power, and just all around is a better sub. I'll work on measurements
post #11 of 21
One of my sealed eD subs had the same maybe more output than a SVS PB12/plus/2 sub. That is dual ported robust 12's vs a sealed 18.
post #12 of 21
Quote:
Originally Posted by Pure-Evil View Post

The eD definitely goes deeper, has more power, and just all around is a better sub.

When was it that you listened to a Turbo?
post #13 of 21
I hope to be adding a second A7s-450 to my room in the next couple months. Would be sweet.

Great sub tho.
post #14 of 21
Thread Starter 
Quote:
Originally Posted by JoshKo View Post


When was it that you listened to a Turbo?

I'm talking about a stock mfw
post #15 of 21
Thread Starter 
Quote:
Originally Posted by eiger View Post

I hope to be adding a second A7s-450 to my room in the next couple months. Would be sweet.

Great sub tho.

2 of the A7S 450 would be sick!!!
post #16 of 21
Can one purchase just the bare driver, without the amp and box?
post #17 of 21
Quote:
Originally Posted by DocuMaker View Post

Can one purchase just the bare driver, without the amp and box?

I believe this is the driver:

http://www.edesignaudio.com/product_...products_id=37
post #18 of 21
Quote:
Originally Posted by DocuMaker View Post

Can one purchase just the bare driver, without the amp and box?

Going to DIY?
post #19 of 21
Well, I have never done DIY before, but I picked up a Velodyne SC-1250 for cheap. So I have 1250W RMS to feed something, but I'm not sure what to do. If the driver is ~$300 shipped, then I could build my own A7S-450 for no more than $600.

Or I was thinking of being cheap and picking up a new pair of these 12 inch Alpines for $175. I want to run dual subs because one sub delivers uneven bass in my room.
http://www.alpine-usa.com/product/view/swr-1242d
post #20 of 21
Pure-evil.

Great write up.

You mention the finish. Do you know when the A7S-450 was originally purchased. I am interested in knowing if your unit actually has the Odye subwoofer finish, or our newer matte finish. It was hard to tell from your photos due to their size, and distance.

I think the newer finish might be more to your linking. But still not a gloss veneer of coarse.

We can do a gloss black as well. We are working on one for an A5-350 at this time.
post #21 of 21
I am interested in either 2 A3s-250, an A5s-300 or A7s-450. I like the silver cone of the A3 and A7. have a room open on 2 of 3 sides and 2 story open to hallway above so I probably should go with the A7 if I go with eD especially since I dont think i have a very good space for a 2nd.

I was wanting only a gloss black finish and I see they do now have that though it is $170 extra. Also wondering if I need the EQ or not for another $85 but I guess unless I have a standalone eq, I do need it with the sub.

alexlindeman, it looks like the A3s and A5s are not in stock until June and while the A7s says it is, when you add it to cart it says its not available in the quntity selected even though I only added 1. Being I need a new sub in the next couple weeks, I am holding off and considering something smaller and less expensive as with the gloss black and eq it goes over 1k.
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