Which subwoofers would you like to see being tested? - Page 8 - Home Theater Forum and Systems - HomeTheaterShack.com

 
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post #71 of 269 Old 04-01-07, 02:47 PM
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Re: Which subwoofers would you like to see tested?

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Ilkka wrote: View Post
Whooah, a lot of questions considering how much info you have given from your own sub(s).

I will promise to open a new thread, but here are some basics before that.

2 TC-2000 15", opposite firing
5 cu ft / 140 L net
12mm / 1/2" thick sonotube, lined with 1 1/2" eggcrate foam, covered in black felt
30mm end caps made out of heat-treated birch with a CNC machine
two 18mm inner end caps per end made out of HDF
total weight around 55kg / 120lbs
2.4 kW pro amp (drivers in series, amp bridged)
Behringer DCX2496
Heh-heh, point taken. It's good to see that you'll have a decent representation of a dual opposing driver sealed sub for objective data.

I was wondering if you would take a measurement of the sub with the graph expanded to 2Hz, with the DEQ in the chain and without it, to see the effect, if any on the sub's extension, in-room?

When you take the sub outdoors, will you measure at different tunes (by EQ), or just as a passive sub? You should be close enough to a natural .71 Q to be able to apply a shelf boost at 2 additional points to note the power compression price for extension's sake, no?

Thanks for the sneak peek! Looking forward to the thread and further ahead to the GP session results.

5 cubes is a pretty big sub for a sealed unit. How does it compare in overall size to your SVSub?

Bosso
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post #72 of 269 Old 04-01-07, 03:34 PM Thread Starter
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Re: Which subwoofers would you like to see tested?

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bossobass wrote: View Post
I was wondering if you would take a measurement of the sub with the graph expanded to 2Hz, with the DEQ in the chain and without it, to see the effect, if any on the sub's extension, in-room?
It's not the DEQ, it's the DCX. It's pretty easy and much more reliable to measure the DCX itself. Here's the frequency response: it's for example 3 dB down at 5 Hz. IMO that's pretty good compared to say Velodyne SMS-1 which is ~29 dB down at 5 Hz, and to Onix R-DES which is ~8 dB down at 5 Hz.



Quote:
When you take the sub outdoors, will you measure at different tunes (by EQ), or just as a passive sub? You should be close enough to a natural .71 Q to be able to apply a shelf boost at 2 additional points to note the power compression price for extension's sake, no?
Not decided yet, but I have though about measuring at least two different EQ settings: one close to natural, and another with ~12 dB L/T.

Quote:
5 cubes is a pretty big sub for a sealed unit. How does it compare in overall size to your SVSub?
5 cubes may be big to someone, but when you're used to the SVS Plus/2, it looks really small. OD for the tube is 532mm, distance from end cap to end cap is 810mm.

My main speakers are 1 meter tall.



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post #73 of 269 Old 04-01-07, 05:03 PM
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Re: Which subwoofers would you like to see tested?

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Ilkka wrote: View Post
There will most probably be at least one large and low tuned subwoofer (probably TC-2000 15") in my next measurement session in early May. Also other "heavy duty" DIY subs will be there. Just wait.
Excellent news.. I can't wait to see how the DIY comunity stacks up with the pro's.

And you sub is gorgeous.. both in appearance and function!

JCD
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post #74 of 269 Old 04-01-07, 05:36 PM
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Re: Which subwoofers would you like to see tested?

Very nice Ilkka!..way to go. Put a feather in your cap for doing such a nice job on your caps! I like everything about it from the looks of it, including your graph... a much more refined look than other options you could have went with. Those built in feet don't look nun to bad either.
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post #75 of 269 Old 04-01-07, 11:20 PM
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Re: Which subwoofers would you like to see tested?

Very nice sub Ilkka, I've actually had thoughts about doing something similar with the extra tube I have for the new media-room. Looking forward to all the tests outside!
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post #76 of 269 Old 04-01-07, 11:31 PM
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Re: Which subwoofers would you like to see tested?

Very fine craftsmanship! It looks great with your mains and measure incredibly well next to my sealed TC-3k I am very interested in your comparison.

If you don't have a BFD for your sub, get one fast!
If you don't have REW, get it now!
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post #77 of 269 Old 04-06-07, 06:16 AM
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Re: Which subwoofers would you like to see tested?

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tdamocles wrote: View Post
How about Elemental Designs subwoofers??

Any of the A2, A3, A5, A7 series subwoofers.

They are primarily a car audio subwoofer company but have ventured into HT lately. They seem to have good quality components and the enclosures are built rigidly. They seem to be a bargain and have free shipping on the bigger units. They might even offer to lend one to test!
The dual 12" and dual 15" units look really interesting!! I hope Illka can find an arrangement with EDesign to have at least one of those tested

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post #78 of 269 Old 04-12-07, 02:59 AM Thread Starter
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Re: Which subwoofers would you like to see tested?

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The dual 12" and dual 15" units look really interesting!! I hope Illka can find an arrangement with EDesign to have at least one of those tested

Blaser
I have sent them several e-mails but I haven't got any replies. I guess they are not interested...

Maybe it would help if some people would e-mail them that they would like to see EDesign's subwoofers being tested?
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post #79 of 269 Old 04-12-07, 04:46 AM
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Re: Which subwoofers would you like to see tested?

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I have sent them several e-mails but I haven't got any replies. I guess they are not interested...

Maybe it would help if some people would e-mail them that they would like to see EDesing's subwoofers being tested?
Ilkka,
IMHO they have a less than desirable email/tech support system. I've always had difficulties getting replies through emails. In my experience they seem to answer the phone and it all most never fails. A girl named Le will answer and than ask to speak to Ben.
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post #80 of 269 Old 04-13-07, 03:04 AM Thread Starter
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Re: Which subwoofers would you like to see tested?

I just got a reply from EDesign.

"Currently we do not have enough inventory to offer you one for testing."

So no ED subs for this round of testing.
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