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Showing results 1 to 25 of 998
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Search: Keyword(s): ; Posts Made By: Bigus
Forum: Dedicated Theater Design & Construction   09-20-2016, 01:46 PM
Replies: 2
Views: 50
Posted By Bigus
I wouldn't open it up unless you built a...

I wouldn't open it up unless you built a soundproofed wall/ceiling first, and then added this inside that envelope.

If that is the case, yes, there can be some science if you want to turn it into...
Forum: Dedicated Theater Design & Construction   09-20-2016, 12:54 PM
Replies: 22
Views: 274
Posted By Bigus
That doesn't look like drywall to me, which...

That doesn't look like drywall to me, which should be on subfloor anyway. It looks like some sort of MDF type sheet material on edge, with staples that look to be securing a bottom panel of the...
Forum: Dedicated Theater Design & Construction   09-20-2016, 12:07 PM
Replies: 22
Views: 274
Posted By Bigus
What is that you can see from below hanging over...

What is that you can see from below hanging over the opening. Doesn't look like dimensional framing. Looks like... a cabinet base??
Forum: Dedicated Theater Design & Construction   09-16-2016, 08:19 PM
Replies: 19
Views: 288
Posted By Bigus
A big part of the problem isn't the computer...

A big part of the problem isn't the computer software or even knowledge of how to use it, whether for simulating response or measuring actual response, but rather knowing the target you are trying to...
Forum: DIY Speakers and Subs   09-06-2016, 01:15 PM
Replies: 336
Views: 7,421
Posted By Bigus
Well, yeah, your objections to symmetry are...

Well, yeah, your objections to symmetry are mostly about 3D which is why I initially said may not help with 3D models. My experience was that it was often more of a pain than it was worth, assuming...
Forum: DIY Speakers and Subs   09-06-2016, 11:53 AM
Replies: 336
Views: 7,421
Posted By Bigus
Not sure how experienced you are with FEM, from...

Not sure how experienced you are with FEM, from your question I assume you are at least to some degree. Proper constraints are of course hugely important to getting realistic results from a model. ...
Forum: Dedicated Theater Design & Construction   09-04-2016, 07:51 PM
Replies: 5
Views: 89
Posted By Bigus
I knew it was a slip... but funny! I didn't...

I knew it was a slip... but funny!

I didn't know the design frequency range of sirens but figured it would be in our most sensitive range. They are damned annoying! I would have actually guessed...
Forum: Dedicated Theater Design & Construction   09-04-2016, 07:01 PM
Replies: 5
Views: 89
Posted By Bigus
With 194dB being the loudest possible normally...

With 194dB being the loudest possible normally generated sustained sound, yeah... 200dB would be really loud!
Forum: Dedicated Theater Design & Construction   09-04-2016, 06:55 PM
Replies: 28
Views: 560
Posted By Bigus
IMO, horizontal viewing angle is the wrong way to...

IMO, horizontal viewing angle is the wrong way to look at this issue, no pun intended. Our eyes scan horizontally quite rapidly and comfortably. Vertically... not so much.

I wouldn't worry as...
Forum: DIY Speakers and Subs   09-04-2016, 01:36 PM
Replies: 336
Views: 7,421
Posted By Bigus
Yeah for a 2d model that simple the mesh size...

Yeah for a 2d model that simple the mesh size isn't a concern. But planes of symmetry are the correct way to model it so that the mesh can move realistically. Cut along vertical plane, and...
Forum: DIY Speakers and Subs   09-03-2016, 07:24 PM
Replies: 336
Views: 7,421
Posted By Bigus
Not that it changes anything... but pressure...

Not that it changes anything... but pressure forces from within will be both positive and negative. But the way this particular model is constrained is weird.

Those who have some experience...
Forum: DIY Speakers and Subs   09-01-2016, 07:33 PM
Replies: 336
Views: 7,421
Posted By Bigus
The models are cool. Not complete, but gives a...

The models are cool. Not complete, but gives a rough indication that most any reasonable bracing scheme will work well enough. Window, cross, diagonal, some combination, whatever. Each will have...
Forum: DIY Speakers and Subs   07-07-2016, 06:59 AM
Replies: 947
Views: 80,310
Posted By Bigus
Just settled in to our new house... will stay...

Just settled in to our new house... will stay here a couple of years while we plan and build.

Cspire Gigabit fiber was up and running last week. I can pull about 950 both ways from their box. ...
Forum: Dedicated Theater Design & Construction   06-22-2016, 12:51 PM
Replies: 7
Views: 184
Posted By Bigus
My guess is that the only chance to do this that...

My guess is that the only chance to do this that isn't terribly expensive and has a reasonable shot at having some decent sound attenuation is to blaze your own path with a solid door slab, sliding...
Forum: Dedicated Theater Design & Construction   06-21-2016, 12:33 PM
Replies: 13
Views: 251
Posted By Bigus
Another option to at least take a peek at is the...

Another option to at least take a peek at is the Lexicon QLI-32 processor.

For lack of a better way to describe it, this is sort of like Lexicon's alternative to Atmos/Auro3D/DTSX similar to how...
Forum: DIY Speakers and Subs   06-17-2016, 02:01 PM
Replies: 31
Views: 816
Posted By Bigus
Look, there is nothing "wrong" with using a small...

Look, there is nothing "wrong" with using a small or smaller sealed enclosure. Speaker design is and I'm guess always will be about compromise and tradeoffs, optimizing one set of design and...
Forum: DIY Speakers and Subs   06-15-2016, 02:45 PM
Replies: 31
Views: 816
Posted By Bigus
IMO, the only time an IB size sealed enclosure...

IMO, the only time an IB size sealed enclosure makes sense is when it is a "structural" enclosure. Most often, meaning you wall off the end of a room, or turn an adjacent closet into an IB, and the...
Forum: DIY Speakers and Subs   06-15-2016, 09:11 AM
Replies: 35
Views: 876
Posted By Bigus
Question: Is there a relatively easy method...

Question:

Is there a relatively easy method to put a wood veneer or otherwise achieve a nice wood finish on a compound curve surface, say a molded fiberglass baffle or similar? I know there are...
Forum: DIY Speakers and Subs   06-15-2016, 07:48 AM
Replies: 31
Views: 816
Posted By Bigus
Is there anyone serious about DIY subs these days...

Is there anyone serious about DIY subs these days not using some sort of bass equalization? Many use the DSP built into the amp... the iNuke DSP series are popular for price around here. The...
Forum: DIY Speakers and Subs   06-13-2016, 04:12 PM
Replies: 31
Views: 816
Posted By Bigus
If you are prepared to use EQ, and you should be...

If you are prepared to use EQ, and you should be if you hope to marry the sub and room, then it can just as easily be used to protect against overexcursion as it can to boost the LF response in the...
Forum: DIY Speakers and Subs   06-13-2016, 02:27 PM
Replies: 31
Views: 816
Posted By Bigus
I sort of get where you are coming from with this...

I sort of get where you are coming from with this advice, but really, this DIY forum is for people who know how to use a volume knob.

You say "Q drops" but this really means you gain low...
Forum: DIY Speakers and Subs   06-13-2016, 09:20 AM
Replies: 12
Views: 219
Posted By Bigus
Active crossover is definitely the way to go in...

Active crossover is definitely the way to go in this case. You could buy/build the equipment/software to measure the impedance and response curves yourself, spend a significant amount of time both...
Forum: DIY Speakers and Subs   06-11-2016, 11:51 AM
Replies: 35
Views: 876
Posted By Bigus
Awesome thread and great tips! This one will be...

Awesome thread and great tips! This one will be bookmarked.
Forum: DIY Speakers and Subs   06-10-2016, 06:35 PM
Replies: 17
Views: 366
Posted By Bigus
Well, I should probably take a look at the math...

Well, I should probably take a look at the math myself. I understand the argument you made in your article, but it was still superficial. Taking a dozen dB off the max full scale signal won't cause...
Forum: DIY Speakers and Subs   06-10-2016, 02:18 PM
Replies: 96
Views: 1,948
Posted By Bigus
I just meant I don't think its necessary to do a...

I just meant I don't think its necessary to do a coat of resin without any fiber or bead filler to seal the wood if you are going to be doing a coat(s) with some sort of filler later. In other...
Showing results 1 to 25 of 998

 
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