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Forum: DIY Speakers and Subs   07-24-2014, 03:13 PM
Replies: 43
Views: 964
Posted By diy speaker guy
It's been done. Labhorn stack with at least 6...

It's been done. Labhorn stack with at least 6 cabinets. And I do it all the time for theoretical purposes but haven't had enough interest to actually fold something like that yet.

There are...
Forum: DIY Speakers and Subs   07-24-2014, 08:25 AM
Replies: 43
Views: 964
Posted By diy speaker guy
Here's a couple of pictures with a bunch of...

Here's a couple of pictures with a bunch of screen caps that show a few interesting things. They also show how I prefer to compare different alignments. I'm not implying you did it wrong, simply...
Forum: DIY Speakers and Subs   07-23-2014, 09:02 PM
Replies: 43
Views: 964
Posted By diy speaker guy
This is a good study but one thing is noteworthy....

This is a good study but one thing is noteworthy. The front loaded horn's low knee is about a half octave below the other two designs. This is a bit unfair to the flh.

It's tricky to do a fair...
Forum: DIY Speakers and Subs   07-17-2014, 11:52 AM
Replies: 869
Views: 39,631
Posted By diy speaker guy
If you keep quoting me and posting misleading and...

If you keep quoting me and posting misleading and outright incorrect information I'm going to keep responding but at this point I would prefer if we could just stop. The track in your picture...
Forum: DIY Speakers and Subs   07-17-2014, 10:26 AM
Replies: 869
Views: 39,631
Posted By diy speaker guy
WHAT!?! Several people have said this indirectly...

WHAT!?! Several people have said this indirectly already, I wasn't expecting anyone to say it outright. Specs do matter. A lot. Measurement matter. Analyzing material content matter.



Yes,...
Forum: DIY Speakers and Subs   07-17-2014, 09:49 AM
Replies: 869
Views: 39,631
Posted By diy speaker guy
A couple more quick comments that should be...

A couple more quick comments that should be obvious and then I'm done with discussing this with you. You still haven't made a single technical statement yet. If and when you do I'll discuss this...
Forum: DIY Speakers and Subs   07-17-2014, 01:42 AM
Replies: 869
Views: 39,631
Posted By diy speaker guy
Again, just to be clear, I didn't make the Le...

Again, just to be clear, I didn't make the Le xmax limit comment, that was Jakob of Sundown Audio. The only comments I made about Le limits were in explaining the Klippel standard.



This is a...
Forum: DIY Speakers and Subs   07-16-2014, 05:48 PM
Replies: 869
Views: 39,631
Posted By diy speaker guy
I'm going to say this one more time because...

I'm going to say this one more time because neither of you seem to get it, and then I'm going to leave it alone. You can't evaluate crest factor, duty cycle, power consumed over time or "intensity"...
Forum: DIY Speakers and Subs   07-16-2014, 04:16 PM
Replies: 869
Views: 39,631
Posted By diy speaker guy
Wow, that's even worse than I thought. ...

Wow, that's even worse than I thought.



In this case we know quite a bit. There is Klippel testing of the prototype, which wasn't particularly impressive. We know MMS isn't particularly high...
Forum: DIY Speakers and Subs   07-16-2014, 04:03 PM
Replies: 869
Views: 39,631
Posted By diy speaker guy
What was the crest factor and specific...

What was the crest factor and specific frequencies of the material you were playing? You keep saying 8000 watts but don't seem to realize that means nothing at all by itself. There's a HUGE...
Forum: DIY Speakers and Subs   07-16-2014, 01:48 PM
Replies: 869
Views: 39,631
Posted By diy speaker guy
This driver wasn't especially impressive when it...

This driver wasn't especially impressive when it came out last year at $699. At $1599 I'm 229 percent less impressed. Using a single unverified IN ROOM comparison at a get together without level...
Forum: DIY Speakers and Subs   07-10-2014, 09:37 PM
Replies: 30
Views: 956
Posted By diy speaker guy
Being familiar with the name Sundown but not this...

Being familiar with the name Sundown but not this particular driver, when I looked it up tonight it wasn't really what I expected. 2 inch VC, 400 watt power handling, 12 mm xmax, I wasn't even aware...
Forum: DIY Speakers and Subs   07-10-2014, 08:14 AM
Replies: 30
Views: 956
Posted By diy speaker guy
As I mentioned before, Hornresp can't simulate...

As I mentioned before, Hornresp can't simulate inductance correctly. A very high inductance driver absolutely will have huge effects below 100 hz in reality. The entire response shape can change and...
Forum: DIY Speakers and Subs   07-09-2014, 07:36 PM
Replies: 30
Views: 956
Posted By diy speaker guy
The tapped horn has a 15 db hole in response at...

The tapped horn has a 15 db hole in response at 90 hz (assuming the sim is correct) so even with the crossover set at 70 hz these subs are going to sound completely different even above 70 hz unless...
Forum: DIY Speakers and Subs   07-09-2014, 05:01 PM
Replies: 30
Views: 956
Posted By diy speaker guy
You don't need a book, there are a bunch of...

You don't need a book, there are a bunch of websites that describe how to do this. Like this one - http://sound.westhost.com/tsp.htm
But that's the hard way. The really hard way.

If you want to...
Forum: DIY Speakers and Subs   07-09-2014, 11:45 AM
Replies: 30
Views: 956
Posted By diy speaker guy
These two subs are nothing alike, the Peavey has...

These two subs are nothing alike, the Peavey has no output below 70 hz and is very strong above 70 hz, and the tapped horn has a massive hole in response between 70 and 100 hz but is very strong...
Forum: DIY Speakers and Subs   07-09-2014, 08:22 AM
Replies: 30
Views: 956
Posted By diy speaker guy
Your model isn't even close to accurate. .5 pi...

Your model isn't even close to accurate. .5 pi is the theoretical maximum when corner loaded, so if you were in a basement with thick concrete walls it might be appropriate to use .5 pi, but even...
Forum: DIY Speakers and Subs   07-01-2014, 08:19 PM
Replies: 128
Views: 2,867
Posted By diy speaker guy
Most of this has been addressed but I have a few...

Most of this has been addressed but I have a few additional notes.

MOST subwoofer horns these days are designed with Hornresp using the sliders in the Loudspeaker Wizard. It takes about 5 - 10...
Forum: DIY Speakers and Subs   07-01-2014, 07:47 PM
Replies: 91
Views: 39,198
Posted By diy speaker guy
This is (mostly) covered in post 1 of this...

This is (mostly) covered in post 1 of this thread. Also in a couple other Hornresp tutorials and in the Hornresp Help file. And for future reference you can just make changes and check the...
Forum: DIY Speakers and Subs   06-29-2014, 08:54 PM
Replies: 33
Views: 1,135
Posted By diy speaker guy
Thanks, this is a great resource. Sketchup...

Thanks, this is a great resource. Sketchup drives me nutty, I've been able to use it with very basic functionality in the past but I need to learn more. I've been procrastinating for years, this is...
Forum: DIY Speakers and Subs   06-15-2014, 11:02 PM
Replies: 441
Views: 17,544
Posted By diy speaker guy
83 percent of new visitors to the forum will be...

83 percent of new visitors to the forum will be casual users, for example they will get here through a search or external link as opposed to visiting with the intention of becoming a member.
68...
Forum: DIY Speakers and Subs   06-15-2014, 10:29 PM
Replies: 480
Views: 18,516
Posted By diy speaker guy
I thought this was resolved a long time ago...

I thought this was resolved a long time ago during the outdoors measurements, which are the only ones that matter when answering this question. ...
Forum: DIY Speakers and Subs   03-22-2014, 10:56 PM
Replies: 480
Views: 18,516
Posted By diy speaker guy
Quote:Originally Posted by...

Quote:Originally Posted by LTD02 http://www.avsforum.com/img/forum/go_quote.gif...
Forum: DIY Speakers and Subs   03-22-2014, 10:05 PM
Replies: 480
Views: 18,516
Posted By diy speaker guy
I didn't realize we were still talking about...

I didn't realize we were still talking about this here, I sent you a PM.

Anyway, here's something completely different.

http://i58.tinypic.com/24eco5w.png

This is exactly the opposite of...
Forum: DIY Speakers and Subs   03-22-2014, 03:41 PM
Replies: 480
Views: 18,516
Posted By diy speaker guy
Interesting. The acoustic impedance graph...

Interesting.

The acoustic impedance graph is showing throat resistance and reactance. I didn't know there was much we could do with that info. And I don't know how you are reading or interpreting...
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