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Forum: DIY Speakers and Subs   01-29-2015, 02:43 AM
Replies: 140
Views: 3,986
Posted By notnyt
This is close to what I had modeled out. Keep in...

This is close to what I had modeled out. Keep in mind an EP2500 cannot adequately power an LMS. Yes, it can bottom it out at low frequencies, but at higher frequencies it leaves a lot on the table....
Forum: DIY Speakers and Subs   01-28-2015, 04:55 PM
Replies: 29
Views: 501
Posted By notnyt
The FP14000 cant sustain that power anyway. ...

The FP14000 cant sustain that power anyway. 120V/30A = 3600W, and at 60% efficiency or so you're looking at about 2kw sustained total. Sure it can peak crazy high, but its limited by the source...
Forum: DIY Speakers and Subs   01-28-2015, 03:30 PM
Replies: 29
Views: 501
Posted By notnyt
This is kind of misleading. Aren't their...

This is kind of misleading. Aren't their resonant frequencies right around 20hz? I wouldn't be so quick to try that at other frequencies :/

Also in those extended tests, they're not taking...
Forum: DIY Speakers and Subs   01-28-2015, 05:47 AM
Replies: 10
Views: 298
Posted By notnyt
http://www.jblpro.com/ProductAttachments/SS4722_05...

http://www.jblpro.com/ProductAttachments/SS4722_0509.pdf

http://www.jblproservice.com/pdf/Theatre%20Series/4722-HF.pdf


1.5" throat iirc
Forum: DIY Speakers and Subs   01-28-2015, 01:17 AM
Replies: 140
Views: 3,986
Posted By notnyt
In case anyone is looking for that data diy...

In case anyone is looking for that data diy speaker guy referenced,
...
Forum: DIY Speakers and Subs   01-28-2015, 12:08 AM
Replies: 140
Views: 3,986
Posted By notnyt
Oh, so now it's for an OEM client, this matters...

Oh, so now it's for an OEM client, this matters for this discussion how? Sounds like more "blowing smoke" as you say.
Forum: DIY Speakers and Subs   01-28-2015, 12:01 AM
Replies: 140
Views: 3,986
Posted By notnyt
John simply posted he was working on 2, and you...

John simply posted he was working on 2, and you say it's blowing smoke. You say you're working on two more, then go into Emodynamic mode when asked for specs, how is that any different?

EDIT:...
Forum: DIY Speakers and Subs   01-27-2015, 11:30 PM
Replies: 140
Views: 3,986
Posted By notnyt
So what are the specs on the ones you're working...

So what are the specs on the ones you're working on?
Forum: DIY Speakers and Subs   01-27-2015, 11:06 PM
Replies: 140
Views: 3,986
Posted By notnyt
It's a mystery. No specs yet. Your 24's a...

It's a mystery. No specs yet. Your 24's a beast, so will be interesting to see what he does. I'd like to see a beefier coil and more motor, but that's gonna be rough. Looking at the pics posted...
Forum: DIY Speakers and Subs   01-27-2015, 09:25 PM
Replies: 140
Views: 3,986
Posted By notnyt
Very true. I need to move somewhere warm :(

Very true. I need to move somewhere warm :(
Forum: DIY Speakers and Subs   01-27-2015, 08:59 PM
Replies: 764
Views: 21,102
Posted By notnyt
Something to keep in mind re: the 4722, I've...

Something to keep in mind re: the 4722, I've heard the CD doesn't sound so good when crossed much below 730hz. This is second hand, I haven't tested this. I went with the passive xover just to keep...
Forum: DIY Speakers and Subs   01-27-2015, 08:55 PM
Replies: 140
Views: 3,986
Posted By notnyt
Is Ricci going to measure the 24 in a box, or was...

Is Ricci going to measure the 24 in a box, or was he just measuring the driver?
Forum: DIY Speakers and Subs   01-27-2015, 08:51 PM
Replies: 764
Views: 21,102
Posted By notnyt
Well you made the claim, was wondering what your...

Well you made the claim, was wondering what your reasoning for that was? As LTD02 said, they're very similar, with the JBL offering greater pattern control at lower frequencies due to the size.
...
Forum: DIY Speakers and Subs   01-27-2015, 06:37 PM
Replies: 764
Views: 21,102
Posted By notnyt
Yes, 648, probably didn't work since we have...

Yes, 648, probably didn't work since we have different posts-per-page
Forum: DIY Speakers and Subs   01-27-2015, 06:12 PM
Replies: 764
Views: 21,102
Posted By notnyt
Yes, you said the SEOS (assuming the 24 since...

Yes, you said the SEOS (assuming the 24 since it's the only one close) is better than the JBL 2384 horn (used in 4722). Was asking you to quantify this.

Edit: this was the original post...
Forum: DIY Speakers and Subs   01-27-2015, 05:48 PM
Replies: 140
Views: 3,986
Posted By notnyt
It takes a minimum of 8kw in a 10 cube box to...

It takes a minimum of 8kw in a 10 cube box to push it that far. I don't think that coil would like that very much. In a 20 cube box you can get there with minimum 4kw, and less in an IB. Assuming...
Forum: DIY Speakers and Subs   01-27-2015, 05:30 PM
Replies: 764
Views: 21,102
Posted By notnyt
What does that have to do with your statement...

What does that have to do with your statement that the SEOS is better than the JBL waveguide?
Forum: DIY Speakers and Subs   01-27-2015, 05:19 PM
Replies: 8
Views: 366
Posted By notnyt
sig

sig
Forum: DIY Speakers and Subs   01-27-2015, 05:16 PM
Replies: 140
Views: 3,986
Posted By notnyt
You don't need to do measure sweeps at that...

You don't need to do measure sweeps at that level, you just do measurements outdoors at a greater distance and do some math. Every doubling of distance you're losing 6db. At 10 meters, you're down...
Forum: DIY Speakers and Subs   01-27-2015, 05:12 PM
Replies: 140
Views: 3,986
Posted By notnyt
sd of 24 is 2129 cm^2, sd of say an lmsu is 1195...

sd of 24 is 2129 cm^2, sd of say an lmsu is 1195 cm^2. The physics here, is that two lms will have 261cm^2 more surface area and greater power handling by no small margin. Going by models, the 18s...
Forum: DIY Speakers and Subs   01-27-2015, 02:39 PM
Replies: 140
Views: 3,986
Posted By notnyt
The comparison just outlined borders on...

The comparison just outlined borders on stupidity. Just test one of these groundplane outdoors as Ricci does. Then you can compare properly.
Forum: DIY Speakers and Subs   01-27-2015, 01:54 PM
Replies: 8
Views: 340
Posted By notnyt
There's massive amounts of travel there, likely...

There's massive amounts of travel there, likely surround limited. That looks pretty epic, though it's really deep. That VC/former looks pretty heavy, too, but will have to see specs once they...
Forum: DIY Speakers and Subs   01-27-2015, 01:22 PM
Replies: 764
Views: 21,102
Posted By notnyt
How are you quantifying this? The JBL horn is...

How are you quantifying this? The JBL horn is larger and will have better pattern control down to a lower frequency.
Forum: DIY Speakers and Subs   01-27-2015, 01:15 PM
Replies: 3
Views: 161
Posted By notnyt
sig

sig
Forum: DIY Speakers and Subs   01-26-2015, 06:55 PM
Replies: 764
Views: 21,102
Posted By notnyt
Try this http://skyavpro.com/contact.php

Try this

http://skyavpro.com/contact.php
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