Eminence with a new high performance 21"? - Page 12 - AVS Forum | Home Theater Discussions And Reviews
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post #331 of 395 Old 01-12-2020, 12:39 PM
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Originally Posted by a77cj7 View Post
Just eat yer wheaties and think manly, lol.

Understandable to need help, nothing like a 80lb controlled lift at head height. The 50lb NSW’s will be fun too.

Should have enlisted assistance after your GTG.

Chris


Yeah I could’ve. The lift is no problem. It’s that I’d need an extra hand/arm to screw them in once I lift them in place. I was able to do the bottoms, by using one knee to hold the drivers while I still had two hands to unscrew/screw.
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post #332 of 395 Old 01-12-2020, 12:46 PM
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Originally Posted by Jk7.2 View Post
Yeah I could’ve. The lift is no problem. It’s that I’d need an extra hand/arm to screw them in once I lift them in place. I was able to do the bottoms, by using one knee to hold the drivers while I still had two hands to unscrew/screw.


Ahh, yes. I’ve removed and installed my HT18’s vertical before, thats bad enough alone.
Finally got my minidsp 4x10 swapped and programmed, so will be installing my HST’s shortly. Luckily I can flip the boxes on their backs.

Chris
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post #333 of 395 Old 01-12-2020, 01:32 PM
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The eminence measured better on DB than the HST, even down low. I would expect it to be an upgrade everywhere! That midbass difference is huge.
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post #334 of 395 Old 01-12-2020, 02:16 PM
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The eminence measured better on DB than the HST, even down low. I would expect it to be an upgrade everywhere! That midbass difference is huge.


It is. And I’m honestly thinking I’ll run two of my 20K’s in bridged mode to feed these adequate power. I’ll bridge 8 channels into 4. I gave one all a single channel had, free air, and the thing soaked up every bit no problem.
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post #335 of 395 Old 01-12-2020, 02:59 PM
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Originally Posted by a77cj7 View Post
Nsw is actually winning on the low end, I didn’t expect that.

Looks like the top will still benefit from the micro though.

How bad did you have to hack the bracing?

Chris


I think it looks good!


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post #336 of 395 Old 01-12-2020, 04:42 PM
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Quote:
Originally Posted by Jk7.2 View Post
Quote:
Originally Posted by MKtheater View Post
The eminence measured better on DB than the HST, even down low. I would expect it to be an upgrade everywhere! That midbass difference is huge.


It is. And I’️m honestly thinking I’️ll run two of my 20K’️s in bridged mode to feed these adequate power. I’️ll bridge 8 channels into 4. I gave one all a single channel had, free air, and the thing soaked up every bit no problem.
The clones have big power at 4 ohms but at 6 ohms and above they won’t have enough to bottom these unless in massive boxes.

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post #337 of 395 Old 01-12-2020, 09:10 PM
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Originally Posted by MKtheater View Post
The eminence measured better on DB than the HST, even down low. I would expect it to be an upgrade everywhere! That midbass difference is huge.
It would be interesting to swap cabinet positions top to bottom / bottom to top, and re-run the sweep comparison.

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post #338 of 395 Old 01-12-2020, 09:32 PM
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Quote:
Originally Posted by MKtheater View Post
The eminence measured better on DB than the HST, even down low. I would expect it to be an upgrade everywhere! That midbass difference is huge.
It would be interesting to swap cabinet positions top to bottom / bottom to top, and re-run the sweep comparison.
I thought that was same position. Positioning is everything but the eminence still measured better on DB.

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post #339 of 395 Old 01-13-2020, 08:04 AM
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It would be interesting to swap cabinet positions top to bottom / bottom to top, and re-run the sweep comparison.


My plan is once the last 2 hst’s are swapped out, I’ll be measuring, and I’ll have a direct comparison of 4 nsw’s and 4 hst’s. All measured one the same exact positions.
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post #340 of 395 Old 01-13-2020, 08:17 AM
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My plan is once the last 2 hst’s are swapped out, I’ll be measuring, and I’ll have a direct comparison of 4 nsw’s and 4 hst’s. All measured one the same exact positions.
I already know what the answer will be. The eminence is a very nice driver and has the least rolloff of the pro drivers meaning it will have a heavy sound and feel with the midbass attack, moreso than the others used all the time.

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post #341 of 395 Old 01-13-2020, 10:44 AM
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Originally Posted by Jk7.2 View Post
My plan is once the last 2 hst’s are swapped out, I’ll be measuring, and I’ll have a direct comparison of 4 nsw’s and 4 hst’s. All measured one the same exact positions.

I'm using mine to replace UM18's and my Mag12 mid-basses.


I also have 3 18HP1030's I want to use in mains, but they could be repurposed to be near field. I'm just happy that the NSW's can cover such a huge range and are generally not picky about the alignment they are in.
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post #342 of 395 Old 01-20-2020, 06:21 PM
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Its impressive to get this performance out of PA drivers at 12hz.



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8hz ULF TR for the masses and the Cashless. Like a BOSS


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Last edited by Gorilla Killa; 01-20-2020 at 06:26 PM.
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post #343 of 395 Old 01-20-2020, 07:38 PM
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What is the setup?


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post #344 of 395 Old 01-20-2020, 08:49 PM
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Originally Posted by Gorilla Killa View Post
Its impressive to get this performance out of PA drivers at 12hz.



What alignment is that and was that at the LP? How much room gain do you have at 10-12hz?

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post #345 of 395 Old 01-21-2020, 02:46 AM
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Nobody else got these up and running yet. Curiosity has got the better of me so I'm building a sealed enclosure to see what the difference is.
What size sealed box did you build?

I’m leaning toward these in my room right now. Low end, and low distortion makes them
More appealing than the B&C I had been planning on. Hoping to crossover from my fronts at 110hz or so.

My issue is depth. I’ve only got about 16-18” to work with. At only 10” deep, I think that could work, since I have 100” of height and 50” of width to work at. Which I think is about 46 cubic feet. But....I’d likely need to keep it 4x8 for front panel, so that I can use easily and obtainable material.

With going this large, I imagine I should use .75” birch plywood for rigidity and a little weight savings. Doubled up on the front. And maybe a Stonehenge style bracing system around the driver.
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post #346 of 395 Old 01-21-2020, 04:54 AM
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They are a slightly larger version of Seatons X21 with one port plugged. I still have some headroom but dont have enough amp atm to pull out every last bit.

I don't know if I ever measured my room gain MK, I'll look I save everything.

I cut up some sealed boxes last month but never assembled them. I'm using a riser so I probably won't bother.
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post #347 of 395 Old 01-21-2020, 09:50 AM
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I have some sealed boxes in the works now. Probably 4-6 weeks out though as I wait for CNC as my shop is currently unavailable.
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post #348 of 395 Old 01-21-2020, 10:22 AM
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Box 1 almost done




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post #349 of 395 Old 01-21-2020, 08:57 PM
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My issue is depth. I’ve only got about 16-18” to work with. At only 10” deep, I think that could work, since I have 100” of height and 50” of width to work at. Which I think is about 46 cubic feet...

With going this large, I imagine I should use .75” birch plywood for rigidity and a little weight savings. Doubled up on the front. And maybe a Stonehenge style bracing system around the driver.

Going so large doesn't buy you much with sealed.

I'd either save wood and weight and go smaller (I'd guess half or less the size gets you 90% of the ULF), or port it to get real benefit in extension and SPL.

3/4 is perfectly adequate with enough simple xbracing.

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post #350 of 395 Old 01-22-2020, 07:04 AM
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sorry if this has been asked..but i dont recall seeing that...has anyone ran charts and compared the Eminence to the Lavoce? curious if it would be worth the upgrade..

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post #351 of 395 Old 01-22-2020, 07:15 AM
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sorry if this has been asked..but i dont recall seeing that...has anyone ran charts and compared the Eminence to the Lavoce? curious if it would be worth the upgrade..


I believe @superkyle swapped in his BMD’s, maybe he has something.

GSG has them in their performance table.
https://shop.gsgad.com/pages/perform...mparison-table

Chris
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post #352 of 395 Old 01-22-2020, 07:28 AM
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I believe @superkyle swapped in his BMD’s, maybe he has something.

GSG has them in their performance table.
https://shop.gsgad.com/pages/perform...mparison-table

Chris
thanks..will take a look..that does look familiar..heck i probably even asked this before..im getting old..LOL

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post #353 of 395 Old 01-22-2020, 09:49 AM
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thanks..will take a look..that does look familiar..heck i probably even asked this before..im getting old..LOL


When I swapped mine I noticed a bit more punch, authority and clarity on the low side. On the higher (above 40hz) I couldn’t really tell a difference between them.
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post #354 of 395 Old 01-22-2020, 11:23 AM
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Yeah I know. I want to find a local buyer for the setup. Drivers and cabs. That may be my next step. List them.
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post #355 of 395 Old 01-22-2020, 11:44 AM
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I'm designing some bracing, can anybody tell me the diameter of the motor please?
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post #356 of 395 Old 01-22-2020, 11:48 AM
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I'm designing some bracing, can anybody tell me the diameter of the motor please?


I can measure one of mine when I get home.

Chris
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post #357 of 395 Old 01-22-2020, 11:56 AM
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Originally Posted by noah katz View Post
Going so large doesn't buy you much with sealed.

I'd either save wood and weight and go smaller (I'd guess half or less the size gets you 90% of the ULF), or port it to get real benefit in extension and SPL.

3/4 is perfectly adequate with enough simple xbracing.
I spoke with Eminence and they're adamant about not using the sub in a sealed or IB style enclosure, and that it really belongs in a vented system. I'm going to try to work with GSG on a design that will fit behind my screen and sort my purposes.

Any suggestions? The devastator looks like a great design, but I really don't want to lose that much space.
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post #358 of 395 Old 01-22-2020, 11:57 AM
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I spoke with Eminence and they're adamant about not using the sub in a sealed or IB style enclosure, and that it really belongs in a vented system. I'm going to try to work with GSG on a design that will fit behind my screen and sort my purposes.



Any suggestions? The devastator looks like a great design, but I really don't want to lose that much space.


Mine are in 10cf net cabs tuned to 18 ish. They sound awesome. Good extension to 12 hz.
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post #359 of 395 Old 01-22-2020, 12:49 PM
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fyi...Parts Express has 2 Lavoce on open box for 376 each..throw in a coupon code and not a bad deal.

https://www.parts-express.com/open-b...hm--86-293-732

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post #360 of 395 Old 01-22-2020, 01:02 PM
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fyi...Parts Express has 2 Lavoce on open box for 376 each..throw in a coupon code and not a bad deal.

https://www.parts-express.com/open-b...hm--86-293-732
Wow. Great price. Unfortunately, the 8 ohm turns me off because of my amps. The 6 ohm is a little bit of a bummer, but better than 8. Suppose someone could wire them in parallel, but then lose the ability to EQ each individually.
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