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Forum: DIY Speakers and Subs   03-06-2015, 05:12 AM
Replies: 133
Views: 2,111
Posted By Jay1
Oh okay thanks for the speaker design lesson

Oh okay thanks for the speaker design lesson
Forum: DIY Speakers and Subs   03-06-2015, 04:20 AM
Replies: 133
Views: 2,111
Posted By Jay1
What's the point of using a 15"? What's the...

What's the point of using a 15"?
What's the point of using a 12"?
Forum: DIY Speakers and Subs   03-05-2015, 10:20 PM
Replies: 79
Views: 853
Posted By Jay1
I think those look fine for stick bracing

I think those look fine for stick bracing
Forum: DIY Speakers and Subs   03-05-2015, 10:13 PM
Replies: 79
Views: 853
Posted By Jay1
I would put in a pair of # pattern braces that...

I would put in a pair of # pattern braces that surround the woofer cutout and connect the side to the port panel
Forum: DIY Speakers and Subs   03-05-2015, 09:26 PM
Replies: 12,336
Views: 832,389
Posted By Jay1
I dont have a problem with Erich or his business...

I dont have a problem with Erich or his business model. I think a separate AVS forum is a good idea. It seems like the only products available for the Do It Yourselfer are the products available to...
Forum: DIY Speakers and Subs   03-05-2015, 09:10 PM
Replies: 25
Views: 286
Posted By Jay1
The reason I ask is because the miniDSP has...

The reason I ask is because the miniDSP has filters down to 10hz. The pro amps with DSP do not have filters that go below 20hz. There are ways to get around that, LTD made a thread going over that...
Forum: DIY Speakers and Subs   03-05-2015, 08:29 PM
Replies: 25
Views: 286
Posted By Jay1
What amp are you using? Do you have a miniDSP? If...

What amp are you using? Do you have a miniDSP? If 12hz isnt cleaning up the cone excursion and port velocity move it up higher in frequency ;)
Forum: DIY Speakers and Subs   03-05-2015, 08:09 PM
Replies: 25
Views: 286
Posted By Jay1
Well since you are running a ported sub the first...

Well since you are running a ported sub the first thing you need to do is add a high pass filter to the model and in real life.
Forum: DIY Speakers and Subs   03-05-2015, 07:19 PM
Replies: 71
Views: 3,721
Posted By Jay1
As long as you have the room to position them,...

As long as you have the room to position them, meaning pulled out from the rear/side walls and still spread far apart, and be able to toe them in, then no there isnt really such a thing as overkill :D
Forum: DIY Speakers and Subs   03-05-2015, 07:16 PM
Replies: 133
Views: 2,111
Posted By Jay1
Yeah the box I posted in the OP would be for the...

Yeah the box I posted in the OP would be for the 18". If I go with the 15" it will be 18"x40"x14.25"
Forum: DIY Speakers and Subs   03-05-2015, 06:28 PM
Replies: 133
Views: 2,111
Posted By Jay1
Well I'm basically at the point where if I fell...

Well I'm basically at the point where if I fell like the WG/CD combo looks good to use at 650hz LR4 that I'm going to try out the Celestion 18". If I feel like it needs to be higher then that I'm...
Forum: DIY Speakers and Subs   03-05-2015, 06:18 PM
Replies: 6
Views: 96
Posted By Jay1
The APR15 that I linked come with 900g of mass...

The APR15 that I linked come with 900g of mass discs (20ea 45g discs). A pair of those PRs with 810g added to each in 6ft3 will tune you right at 18hz. Add an 18hz HPF an you could put 1200 watts on...
Forum: DIY Speakers and Subs   03-05-2015, 05:04 PM
Replies: 6
Views: 96
Posted By Jay1
Well If I take this 15" pr with 33mm of throw ...

Well If I take this 15" pr with 33mm of throw

http://creativesound.ca/details.php?model=APR15

and put it in a 6ft3 box with 405g added mass for an 18hz tune, and add an 18hz high pass filter...
Forum: DIY Speakers and Subs   03-04-2015, 09:45 PM
Replies: 72
Views: 1,416
Posted By Jay1
Good god man you are getting insane spl at the LP...

Good god man you are getting insane spl at the LP without any large suckouts. You definitely didnt come across as someone who wanted the loudest sub system on AVS when you were asking about a dual...
Forum: DIY Speakers and Subs   03-04-2015, 07:07 PM
Replies: 133
Views: 2,111
Posted By Jay1
I'm no expert on this stuff, but it has to do...

I'm no expert on this stuff, but it has to do with the unequal distance the mic is from the center of the cone to the edge of the cone. The 4" distance isnt a true nearfield but it is still twice as...
Forum: DIY Speakers and Subs   03-04-2015, 06:38 PM
Replies: 133
Views: 2,111
Posted By Jay1
It is basically a nearfield measurement, which is...

It is basically a nearfield measurement, which is why it looks like it is rolling off. A breakup is correlated directly to HD. 3rd order is exactly at 1/3 the frequency of the fundamental. This is...
Forum: DIY Speakers and Subs   03-04-2015, 06:09 PM
Replies: 212
Views: 4,813
Posted By Jay1
If you ever feel like taking the measurements...

If you ever feel like taking the measurements just let me know. Whipping up a crossover is pretty easy once all of the needed data is collected.
Forum: DIY Speakers and Subs   03-04-2015, 06:03 PM
Replies: 133
Views: 2,111
Posted By Jay1
While voice coil didnt run a frequency sweep on...

While voice coil didnt run a frequency sweep on the Celestion due to "not having a 18" or 21" test box" they did run an 8.2 V at 4" distortion sweep that shows me a lot of what is going on
...
Forum: DIY Speakers and Subs   03-04-2015, 08:48 AM
Replies: 133
Views: 2,111
Posted By Jay1
Yeah those TD18s would probably be the best...

Yeah those TD18s would probably be the best choice (other then price), I'm just not willing to play the game with trying to purchase AE products. Anything that I have to jump through a hoop to...
Forum: DIY Speakers and Subs   03-04-2015, 08:43 AM
Replies: 26
Views: 562
Posted By Jay1
You do have your speakers wall mounted. Are the...

You do have your speakers wall mounted. Are the tweeters even at ear height? Placement is very important for razor sharp imaging and full size sound staging. That means putting them on stands,...
Forum: DIY Speakers and Subs   03-04-2015, 08:30 AM
Replies: 133
Views: 2,111
Posted By Jay1
Yowza that's a massive speaker ...

Yowza that's a massive speaker

http://qa.pioneerelectronics.com/pio/pe/vgn/images/portal/cit_3442/34223tcm1821_1822big.gif

Good to see it isnt unheard of.
Forum: DIY Speakers and Subs   03-04-2015, 07:59 AM
Replies: 133
Views: 2,111
Posted By Jay1
Yeah it's hard to say. I dont see any reason why...

Yeah it's hard to say. I dont see any reason why just upping the cone size 3" over a 15" would make a driver unusable? I can see that most 18"s are only optimized for subwoofer duty, but not all of...
Forum: DIY Speakers and Subs   03-04-2015, 01:58 AM
Replies: 457
Views: 13,540
Posted By Jay1
You could maybe try having a pair of speakers...

You could maybe try having a pair of speakers placed face to face wired out of phase with a few blankets thrown over the top? Probably still need earplugs.
Forum: DIY Speakers and Subs   03-04-2015, 12:13 AM
Replies: 133
Views: 2,111
Posted By Jay1
Nope haven't ordered a woofer yet. Still waiting...

Nope haven't ordered a woofer yet. Still waiting to test the horn CD combo which I won't be able to do until at least the end of the month
Forum: DIY Speakers and Subs   03-03-2015, 11:14 PM
Replies: 133
Views: 2,111
Posted By Jay1
Yeah I don't really know, would need to measure...

Yeah I don't really know, would need to measure the 18" to see what's going on. I'll have to double check PE's return policy and build a test box before fully committing.
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