[turdlepoker]

I was just reading over in the regular bass forum and it seems this new A7s-650 HT sub by ED might be the clone to a JL Fathom. I bet someone here could build a equal for a lot less then retail. I am curious to how they would sound for HT and music use. BTW, I am sure the JL is better in SQ and output but at almost double the price....I don't think it a good buy.


Anyone willing to try to draw a box that could be a clone? Its dimensions are W-16", H-38", D-16". It has a 4 Layer baffle and a lot of bracing. I guess the volume of this enclosure is around 5 cubic feet after all bracing. I like the small foot print design.

http://www.edesignaudio.com/product_...roducts_id=891


Here are some images of the ED version including there graph:

Here are the specs of the driver. Since, I am lost looking at these figures, maybe someone else can enlighten me if these are good. Overall, it seems to me like it was engineered for a car application. But, I could be wrong.

13Av.2 Subwoofer

Qts: .45

Qes: .48

Qms: 7.48

Fs: 23.29Hz

Re: 2.81

Vas: 55.79L

Mms: 257.0g

Bl: 14.81T*m

SPL: 83.50dB

Sd: 556cm²

Xmax: 28.75 (Physical Linear)mm

Voice Coil: 76.0mm

Power Handling : 1200/1500 WRms


Magnet Width: 7.500"

Cutout Diameter: 12.000"

Mounting Depth: 10.050"

Weight: 59lb

Total Height: 10.050"

Displacement: .12 ft³

Outside Diameter: 13.500"



And since everyone loves pics here are a few of the driver:

Everyone leave there opinions good or bad.


JAY

 

[gpmbc]

I have 2 of those drivers that I built ported enclosures for as suggested by ED 15 x 15 x 45. They are currently inactive as I have 4) sealed 18s in my theater. However my plasma is resting on of the enclosures as a make shift stand. The sealed enclosure could give them new life hmm

The drivers are monsters!

 

[turdlepoker]



Quote:
Originally Posted by gpmbc /forum/post/16879040


I have 2 of those drivers that I built ported enclosures for as suggested by ED 15 x 15 x 45. They are currently inactive as I have 4) sealed 18s in my theater. However my plasma is resting on of the enclosures as a make shift stand. The sealed enclosure could give them new life hmm

The drivers are monsters!

That sounds like a good idea! Be the Guinea Pig. Someone has to do it!


Also, what are your 4 sealed 18's, if you done mind me asking?

 

[kemist1117]



Quote:
Originally Posted by turdlepoker /forum/post/16879124

That sounds like a good idea! Be the Guinea Pig. Someone has to do it!


Also, what are your 4 sealed 18's, if you done mind me asking?

They have a pseudo DIY option same as the A7s-650, just you have to put the box together and finish it for $1100 + shipping

 

[Thatsnasty]

I was wondering about those drivers too. I just posted a thread about DIY, and if you look, I wanted to use the same driver. They have some insane amount of excursion, and I heard they're comparable to JL audio W7 (which cost somewhere around $1000) from some reviews.


I decided against it though since I want a lower Fs sub, that can hit really low in a sealed enclosure.


I'd love to see pics and charts of a DIY of these.


Cheers.

 

[LHD21]



Quote:
Originally Posted by gpmbc /forum/post/16879040


I have 2 of those drivers that I built ported enclosures for as suggested by ED 15 x 15 x 45. They are currently inactive as I have 4) sealed 18s in my theater. However my plasma is resting on of the enclosures as a make shift stand. The sealed enclosure could give them new life hmm

The drivers are monsters!

Looking at the various Qs, BL and MMS I'm guessing they can get farty when pushed. Can you give us your opinion on them?

 

[Looneybomber]



Quote:
Originally Posted by Thatsnasty /forum/post/16879209


I was wondering about those drivers too. I just posted a thread about DIY, and if you look, I wanted to use the same driver. They have some insane amount of excursion,

 

[Eddie Horton]

Sure are a lot of assumptions in this thread. It's already the next Fathom or Gotham, and no one's heard it? Not saying it would be a bad sub at all. Heck, I wouldn't mind having multiples of it in my dedicated room, but let's hear one first.

 

[Looneybomber]



Quote:
Originally Posted by Eddie Horton /forum/post/16880212


Sure are a lot of assumptions in this thread. It's already the next Fathom or Gotham, and no one's heard it? Not saying it would be a bad sub at all. Heck, I wouldn't mind having multiples of it in my dedicated room, but let's hear one first.

Nah, it won't be. It would need a nicer enclosure/finish and a second LT1300 amp (but then they'd need to be 4ohm). It just doesn't have enough power to hang with the JL offerings.

 

[turdlepoker]

Glad to see some good feedback.


I wonder if you power one with a EP2500 how it would be. More wattage. Plus the way plates amps have always been diagnosed with a lower actual output rating then what claimed, I assume that the JL plate amp is down from its claimed 3800 (short term) power rating.


Anyone eager enough to try and design an enclosure? I will build it and give it a whirl with a EP2500.

 

[kemist1117]



Quote:
Originally Posted by turdlepoker /forum/post/16882659


Glad to see some good feedback.


I wonder if you power one with a EP2500 how it would be. More wattage. Plus the way plates amps have always been diagnosed with a lower actual output rating then what claimed, I assume that the JL plate amp is down from its claimed 3800 (short term) power rating.


Anyone eager enough to try and design an enclosure? I will build it and give it a whirl with a EP2500.

Did you look at ED's diy option that i mentioned above? Again, its the same as the A7s-650, just you assemble it, but about half the price. Only thing is it already comes with the amp. You could probably contact them for a modified version of the cabinet with a solid back piece for just binding posts and without the plate amp.

 

[turdlepoker]

That's a really good deal. Saves a lot of time and not to mention MDF Boogers!

I am going to call them in a few to see if they can even work with a better price if I choose to get without the LT1300. I talked to a freind and he might actually be the guinea pig. So I can see what its all about and not have to BUY.

Also, how you think they would fair with a EP2500 wired up stereo mode, 1 channel to each sub? That's basically the wattage to each sub that the LT/1300 is sharing.

Quote:
Originally Posted by kemist1117 /forum/post/16882703


Did you look at ED's diy option that i mentioned above? Again, its the same as the A7s-650, just you assemble it, but about half the price. Only thing is it already comes with the amp. You could probably contact them for a modified version of the cabinet with a solid back piece for just binding posts and without the plate amp.

 

[Eddie Horton]



Quote:
Originally Posted by turdlepoker /forum/post/16882812


That's a really good deal. Saves a lot of time and not to mention MDF Boogers!

I am going to call them in a few to see if they can even work with a better price if I choose to get without the LT1300. I talked to a freind and he might actually be the guinea pig. So I can see what its all about and not have to BUY.

Also, how you think they would fair with a EP2500 wired up stereo mode, 1 channel to each sub? That's basically the wattage to each sub that the LT/1300 is sharing.

Now, that's what Willis was talkin' bout'!

 

[turdlepoker]

HAHAHA, whatchu talkin about Willis?

Quote:
Originally Posted by Eddie Horton /forum/post/16882863


Now, that's what Willis was talkin' bout'!

 

[Eddie Horton]

With an EP2500 instead of the ED amp, you would have to use something like the Marchand Bassis to eq it, though. I'm sure ED has some eq built in to their plate amp to keep the thing semi-flat below 20Hz. If the ED plate amp can already drive the two drivers to xmax, then a more powerful amp wouldn't get you anything. If not, then sure, go for it.

 

[LTD02]

what is the purpose of the six holes in the back plate?

 

[turdlepoker]



Quote:
Originally Posted by LTD02 /forum/post/16883667


what is the purpose of the six holes in the back plate?

It comes with a grill, just in case you have nosy dogs or children. Did I just compare dogs to children? I guess so...HAHA

 

[gpmbc]



Quote:
Originally Posted by turdlepoker /forum/post/16879124

That sounds like a good idea! Be the Guinea Pig. Someone has to do it!


Also, what are your 4 sealed 18's, if you done mind me asking?

I currently have 3) Avalanche 18s and 1) Maelstrom. I liked the sound of the 13 Av.2s but met their limits trying to keep with the likes of JTR 888s and 12LFs. I had them running off one channel each of a Crown K2. I'm currently doin a theater overhaul but after that is done these might go into system B (yet to be determined) with my DLP as it has terrible audio even for TV speakers.

 

[Looneybomber]



Quote:
Originally Posted by Eddie Horton /forum/post/16883378


With an EP2500 instead of the ED amp, you would have to use something like the Marchand Bassis to eq it, though. I'm sure ED has some eq built in to their plate amp to keep the thing semi-flat below 20Hz. If the ED plate amp can already drive the two drivers to xmax, then a more powerful amp wouldn't get you anything. If not, then sure, go for it.

From a CYA perspective of a manufacture, that would be a poor design. If the amp was powerful enough to run those subs out of excursion, they'd be replacing woofers under warranty quite often. If they keep the design amp limited, the drivers will be fine and users will then just get loads of distortion instead of clanking as formers smack the back plates.


I would guess, without modeling, that the drivers are not reach xmax with that LT-1300 amp (600w/driver). With a Crown CE4000 (1200w/driver) that may be a different story.

 

[penngray]

Why bother spending that much?


The 2 Mal-x/FACE F1000TS package is superior and costs less.