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Forum: DIY Speakers and Subs   03-04-2015, 09:45 PM
Replies: 63
Views: 1,122
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: 113
Views: 1,677
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: 113
Views: 1,677
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: 207
Views: 4,454
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: 113
Views: 1,677
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: 113
Views: 1,677
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: 531
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: 113
Views: 1,677
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: 113
Views: 1,677
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: 456
Views: 13,348
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: 113
Views: 1,677
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: 113
Views: 1,677
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.
Forum: DIY Speakers and Subs   03-03-2015, 10:02 PM
Replies: 113
Views: 1,677
Posted By Jay1
Every off axis curve I've seen for an 18" shows...

Every off axis curve I've seen for an 18" shows 600-700 looks about -6db at 45 degrees. I still havent had a chance to measure the horn/cd so I cant say for sure.
Forum: DIY Speakers and Subs   03-03-2015, 09:57 PM
Replies: 2
Views: 66
Posted By Jay1
So you're trying to design your own custom...

So you're trying to design your own custom speakers? Crossover design is a fairly in depth process, picking the drivers is only a fraction of the process. If you are thinking you can just buy a...
Forum: DIY Speakers and Subs   03-03-2015, 08:30 PM
Replies: 113
Views: 1,677
Posted By Jay1
Hey I got 2 per tower, that's about equal to a...

Hey I got 2 per tower, that's about equal to a single 11"! If I'm upgrading I might as well go as big as I can :cool:
Forum: DIY Speakers and Subs   03-03-2015, 06:53 PM
Replies: 113
Views: 1,677
Posted By Jay1
Holy cow this horn is HUGE :D (that's an 8"...

Holy cow this horn is HUGE :D

(that's an 8" woofer in my tower)
http://www.avsforum.com/forum/attachment.php?attachmentid=582249&stc=1&d=1425433856


Looks like the CD I ordered wont ship...
Forum: DIY Speakers and Subs   03-03-2015, 07:57 AM
Replies: 113
Views: 1,677
Posted By Jay1
I'm sure something like that could be worked out,...

I'm sure something like that could be worked out, but that would double the cost of the low pass network, and at least part of the high pass. I'm really just going to be looking at the CD's...
Forum: DIY Speakers and Subs   03-02-2015, 10:22 PM
Replies: 207
Views: 4,454
Posted By Jay1
If you want a passive xover designed place your...

If you want a passive xover designed place your mic about 1m in front of your center horn on axis. Run a short sine sweep and set the gate in front of the first reflection, save the result as a .frd...
Forum: DIY Speakers and Subs   03-01-2015, 06:31 PM
Replies: 16
Views: 347
Posted By Jay1
Xmax is only p-p if you click on the options menu...

Xmax is only p-p if you click on the options menu and change it to p-p. You should also change port velocity to m/s
Forum: DIY Speakers and Subs   02-28-2015, 10:09 AM
Replies: 19
Views: 344
Posted By Jay1
http://www.diysoundgroup.com/dayton15-cube-kit.htm...

http://www.diysoundgroup.com/dayton15-cube-kit.html
Forum: DIY Speakers and Subs   02-27-2015, 04:35 PM
Replies: 39
Views: 1,131
Posted By Jay1
I've seen you post this a couple times at least....

I've seen you post this a couple times at least. That's almost the same thing as telling someone to use a textbook passive crossover. It just isnt that simple and wont work as intended. You have to...
Forum: DIY Speakers and Subs   02-27-2015, 04:21 PM
Replies: 35
Views: 895
Posted By Jay1
Yeah there's just so many ways to skin the...

Yeah there's just so many ways to skin the proverbial cat I try not to question what people are thinking with their designs as long as it isnt a clearly flawed idea, or full of voodoo "science".
...
Forum: DIY Speakers and Subs   02-27-2015, 01:10 PM
Replies: 35
Views: 895
Posted By Jay1
Yeah I think only Erich could explain what his...

Yeah I think only Erich could explain what his vision is for his speaker lineup? This is the first I've heard about a fusion 18.


I'm sure I'll change my mind a couple times at least but right...
Forum: DIY Speakers and Subs   02-27-2015, 12:56 PM
Replies: 35
Views: 895
Posted By Jay1
18 Sound XT1464 and the new Eminence N314T-8....

18 Sound XT1464 and the new Eminence N314T-8. Granted I still have to test the combo out before I commit to a build, but both have been ordered.



It's all about the goals and compromises you're...
Forum: DIY Speakers and Subs   02-27-2015, 12:22 PM
Replies: 35
Views: 895
Posted By Jay1
Very true. I'm about to find out if a 1.4" CD is...

Very true. I'm about to find out if a 1.4" CD is going to be capable enough to make it work. A 15" is always an option if not. Right now I'm in for $270 on the WG/CD combo
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