Official Elemental Designs Subwoofer Thread - Page 519 - AVS Forum
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post #15541 of 15545 Old 12-24-2014, 02:16 PM
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After 4 years of great sound....A7-450 started giving cracking noise...even when there is no cable connected - only the power. 2 months ago i lost about $4K equipments due to lightening surge. I believe this sound started after that.
Sometimes annoying when listening to vocal during the movie and this noise at the same time....
$850 investment on a subwoofer that works for 4 years...mewww...no good...

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post #15542 of 15545 Old 12-24-2014, 02:21 PM
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Originally Posted by sathyakamaraj View Post
After 4 years of great sound....A7-450 started giving cracking noise...even when there is no cable connected - only the power. 2 months ago i lost about $4K equipments due to lightening surge. I believe this sound started after that.
Sometimes annoying when listening to vocal during the movie and this noise at the same time....
$850 investment on a subwoofer that works for 4 years...mewww...no good...
I think I'd blame the lightening strike on not ED on this one.
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post #15543 of 15545 Old 12-25-2014, 08:07 AM
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Originally Posted by primetimeguy View Post
I think I'd blame the lightening strike on not ED on this one.
You probably mean the A7S -450 sealed sub @$850 unless you got it used.

I would agree the lightning is probably the culprit. Regardless, what a bummer.

The good news is it might be fixable. That B&O ICE 1300 watt amp is worth fixing if bad, and you might just have to buy a new speaker, or just get the amp serviced.

My A7-350 ported is still making me smile.

Good luck!
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post #15544 of 15545 Old 12-29-2014, 05:50 PM
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Question Kept enclosure, replaced driver and amp

The saga continues. This is to attempt to salvage the A3-300 enclosure from ED after my driver failure and 2nd LT.300 amp failure.


Based on daveds50's suggestion, I replaced my Dayton RSS315HF-4 with the Infinity Reference 1260W driver when I replaced the ED LT.300 amp with a Dayton SPA250 amp for better sound quality. The original driver had failed a while ago, and the Dayton seemed a good replacement, but the low sensitivity was viewed negatively.


A question I have is with mounting the new driver. It seems to require installation with screws facing outward vs. down like every other driver I've ever installed to compress the rubber gasket (i.e., the gasket is on top of the frame vs. below it). This is a big problem, because I can't install the driver from the bottom without destroying the enclosure. So I must put something over the top of the driver's gasket and screw it down, since the gasket is also used to attach the cone to the driver frame (and you can guess how I figured that out). I need to use a grill or ring, but grills look too flimsy to also be used to mount the sub to the enclosure to ensure an airtight seal (driver installs horizontally), and I'm not finding a lot of rings for this purpose or any guidance on the web for this type of problem. Is there a part for this I haven't found yet?


Btw, my impressions with the new setup is that the new rig (lower power amp + lower capacity driver) has substantially less ability to move air than the original setup, which was to be expected. The clarity should have been better, but I didn't hear that initially. I rebalanced a la Audyssey, and it's much better (by lowering the front speaker's crossover and raising the sub gain), but I had to set amp gain at 40% for the sensor to even recognize I had a sub (my original setup had gain below 15% to keep dogs from howling . See my earlier post about my room, which is large and difficult.
I'm particularly disappointed that the Infinity driver uses cheap spades for the wire connections instead of screw/pushdowns like the Dayton. I'm tempted to add solder to ensure the wires don't come undone--one of the connections isn't confidence-inspiring. Bizarrely, this is supposed to be a driver for cars; I'd have zero confidence in these not coming undone in a car.

---
Onkyo TX-SR707, Boston VS240*2+VS325C, ED A3-300, LG 60PB6650
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post #15545 of 15545 Old 01-11-2015, 09:06 AM
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so the replacement amp i purchased doesn't fit? been so long since i had a working sub i may just trash this thing and get a new one.

what i got now.
[IMG]Sad Sub... by aham23, on Flickr[/IMG]

what i had and what i miss.....
[IMG]eD A3-300 by aham23, on Flickr[/IMG]

Last edited by aham23; 01-11-2015 at 09:12 AM.
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