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Elemental Designs A7-450 Sub Update

by June 24, 2009
Elemental Designs A7-450 subwoofer

Elemental Designs A7-450 subwoofer

A little bit back Elemental Designs took some time to redesign their A7-450 powered home theater subwoofer. With this redesign they moved forward with the idea of using the power provided by the LT/1300, featuring B&O Ice power module design, and matching it up with a custom hand built 18” driver built right in Iowa. This move, fueled by the desire to advance the platform in a new direction led to a few interesting design changes.

Here are some comments from Elemental Designs on what is changing:

  • Cabinet design is going to a slightly larger cabinet dimensionally.
  • Going to two 6″ ports. (Moving from the three 4″ ports mainly for production time)
  • Going to a larger custom underhung 18″ subwoofer. Cast basket, rearward cooling. Follows technology from the 13Av.2 but in a different direction. Similar platform to the custom 15″ speaker used in the A7-350.
  • More low frequency output. (@20-30hz)
  • Price will go up.
  • LT/1300 will be designed for full 4ohm output. Power goes up.
  • The new design will only be shipped in the Matte finish.
  • More overall power handling and cooling.

The changes are occurring for several reasons, including:

  • Demand. eD continually get requests
  • Current design allows for D2 and D4 to be swapped. When this happens it gives too much power at 4ohm (If the D2 coil is swapped in)  if used incorrectly. eD wants to remove this from EVER being possible again. There is too much headache associated with it if the change is allowed to happen for everyone involved.
  • Construction. eD is redesigning in large part with the production manager. The current design goes together in a but more production oriented environment a bit quicker.
  • eD is improving the sub's low frequency capabilities
  • Abuse. It’ll take more of a beating.
  • Lower distortion.
  • More power.

One of the most noticeable updates to the design is the new custom underhung driver. This 18” driver provides over 30 mm of liner excursion one way, providing almost 3” of usable throw. This puts the new driver up in usable excursion from the past driver by almost a full inch of piston movement. The custom driver also takes full use of the power that the LT/1300 provides offering greater low end extension and output gains over the previous design.

A7-450 sub wireframe

Couple the custom hand built driver with an updated cabinet. The new cabinet features dual 6” ports, increased internal volume, lower tuning, and inset 1” EFS bracing in a cabinet made from 1” EFS. Take all of the updates to the cabinet merge that with the custom Iowa build driver and you’ve got an update that definitely has caught some interest. With the new design tipping the scales at 215 lbs this is definitely a subwoofer you aren’t going to want to move by yourself.

A7-450 sub front

Wrap all of that in with the lifetime tech support and free shipping offered by Elemental Designs into the subwoofer with a competitive price of $1650.

For more info or to order, please visit Elemental Designs.

About the author:
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Clint Deboer was terminated from Audioholics for misconduct on April 4th, 2014. He no longer represents Audioholics in any fashion.

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Recent Forum Posts:

ditch-digger posts on July 05, 2009 17:40
great info
engtaz posts on July 03, 2009 14:31
Thanks for the read. Thanks for going over the improvements.
fredk posts on July 03, 2009 10:44
If you go to ED the amp is listed as 1300W. On paper this looks like a much more powerful sub than the 13 ultra.

adwilk. ED gives excursion on the driver as 30mm. If thats x-max and its reasonably linear, it will outperform the JL drivers, particularly at the bottom end. Even if that is x-mec, you are going to get enough x-max to give you a lot of displacement. The real question is how well designed the driver is and how much linear travel it has.

Those JL drivers are amazing, but over time, the rest of the market has caught up. For the money, I would go with the Mal-X 18" over the JL drivers if I were to do DIY.
adwilk posts on July 02, 2009 19:13
frostbyte, post: 590524
No one else wishes to comment on this beast? Looks like a similar price to the SVS Ultra 13, but no amp provided. I wonder how it would compare given the appropriate amp. You would think it would be much better given the size of box and woofer, but you never know. I'm looking for something better than the 13 as size is not important, but quality output per $.

Gotta go DIY then. JL Audio 12 or 13w7 in a ported box with EP2500 and DCX2496 will DESTROY the Ultra. Even a pre-made sub cabinet in a sealed application would fit the bill very nicely….
frostbyte posts on July 02, 2009 17:45
No one else wishes to comment on this beast? Looks like a similar price to the SVS Ultra 13, but no amp provided. I wonder how it would compare given the appropriate amp. You would think it would be much better given the size of box and woofer, but you never know. I'm looking for something better than the 13 as size is not important, but quality output per $.
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