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Search: Posts Made By: Bill Fitzmaurice
Forum: Subwoofers, Bass, and Transducers   05-28-2015, 07:38 PM
Replies: 12
Views: 266
Posted By Bill Fitzmaurice
About 105dB 'C' at the listening position will be...

About 105dB 'C' at the listening position will be felt. 110dB 'C' will give you a good pounding, 115dB 'C' will start to take your breath away. Note that's at the LP, not at 1 meter, unless the LP is...
Forum: DIY Speakers and Subs   05-28-2015, 07:25 PM
Replies: 2
Views: 75
Posted By Bill Fitzmaurice
Using both a roller and sprayer I can get orange...

Using both a roller and sprayer I can get orange peel with no thinning. With a roller use a standard paint roller, not a textured roller. With spray use a small nozzle.
Forum: Audio Theory, Setup, and Chat   05-28-2015, 12:09 PM
Replies: 3
Views: 70
Posted By Bill Fitzmaurice
If the article said that the article was wrong....

If the article said that the article was wrong. You will get an Allison Effect cancellation notch when the speaker baffle is 1/4 wavelength from the wall. Placement four feet out puts that 1/4...
Forum: DIY Speakers and Subs   05-28-2015, 08:45 AM
Replies: 19
Views: 200
Posted By Bill Fitzmaurice
I use these: ...

I use these:
http://www.speakerhardware.com/recex-head-speaker-mount-screw-1-12x8.php

I even use them with 24 pound drivers. That's only 3 pounds per screw.
Forum: DIY Speakers and Subs   05-28-2015, 07:31 AM
Replies: 19
Views: 200
Posted By Bill Fitzmaurice
No more so than with T nuts, where every...

No more so than with T nuts, where every insertion/removal is another chance to strip them. If you do strip screw holes rotate the driver a half inch and drill new holes.

With the alternating...
Forum: Speakers   05-28-2015, 07:26 AM
Replies: 5
Views: 75
Posted By Bill Fitzmaurice
I'd put them 6 to 8 feet high. Surrounds...

I'd put them 6 to 8 feet high. Surrounds shouldn't be too close, otherwise you'll hear the closer one and not the other. See: Precedence Effect.
Forum: Subwoofers, Bass, and Transducers   05-28-2015, 05:51 AM
Replies: 24
Views: 409
Posted By Bill Fitzmaurice
I have, but not often, because it's impractical...

I have, but not often, because it's impractical for most users to do so. You see it regularly in the DIY forum, where it's not beyond the ability of most members to implement.
Forum: Subwoofers, Bass, and Transducers   05-28-2015, 05:46 AM
Replies: 264
Views: 5,885
Posted By Bill Fitzmaurice
IMO, both. :) You don't need to actually know...

IMO, both. :)
You don't need to actually know what you're doing to do what this guy claims to. You just need to know more than those who are paying you to do it.
There are many forums where his...
Forum: DIY Speakers and Subs   05-28-2015, 05:33 AM
Replies: 48
Views: 1,284
Posted By Bill Fitzmaurice
He strikes me as one whose technical knowledge...

He strikes me as one whose technical knowledge consists of whatever he reads in manufacturer brochures. I bet he thinks that Harry Olson was Superman's sidekick. :)

Like Harry Houdini with respect...
Forum: DIY Speakers and Subs   05-28-2015, 05:19 AM
Replies: 19
Views: 200
Posted By Bill Fitzmaurice
That's what I do.

That's what I do.
Forum: Audio Theory, Setup, and Chat   05-28-2015, 05:17 AM
Replies: 3
Views: 70
Posted By Bill Fitzmaurice
Flush mounting eliminates Allison Effect, but...

Flush mounting eliminates Allison Effect, but it's not perfect, as it doesn't allow for speaker toe in. Proper placement also eliminates Allison Effect, but most users don't want their mains the...
Forum: DIY Speakers and Subs   05-27-2015, 07:20 PM
Replies: 19
Views: 200
Posted By Bill Fitzmaurice
Before, and trial fit the driver to make sure...

Before, and trial fit the driver to make sure you're able to drive the T nuts with no issues. If you strip one you can fix it. If you do it after the box is assembled and strip a nut you're in for a...
Forum: DIY Speakers and Subs   05-27-2015, 04:42 PM
Replies: 48
Views: 1,284
Posted By Bill Fitzmaurice
Full blown Dunning-Kruger effect on display....

Full blown Dunning-Kruger effect on display. :rolleyes:
Of course what's actually the case is that commercial cinema sound can never approach what can be achieved in a home theater.
Forum: Subwoofers, Bass, and Transducers   05-27-2015, 11:51 AM
Replies: 13
Views: 219
Posted By Bill Fitzmaurice
All you need to be concerned with is that the low...

All you need to be concerned with is that the low frequency waves don't cause the upper speaker to vibrate atop the sub. A piece of this cut to size to fit under the upper speaker fixes that:...
Forum: Audio Theory, Setup, and Chat   05-27-2015, 11:15 AM
Replies: 3
Views: 54
Posted By Bill Fitzmaurice
The speaker configuration makes no difference,...

The speaker configuration makes no difference, other than bookshelves will probably have less low frequency output, and it's low frequencies that travel most easily around and for that matter even...
Forum: Audio Theory, Setup, and Chat   05-27-2015, 11:13 AM
Replies: 6
Views: 71
Posted By Bill Fitzmaurice
+1. Google 'sound meter weighting'.

+1. Google 'sound meter weighting'.
Forum: Speakers   05-27-2015, 11:08 AM
Replies: 34
Views: 556
Posted By Bill Fitzmaurice
Floor standers have exactly one advantage over...

Floor standers have exactly one advantage over book shelves, and that's better low frequency response. That advantage disappears if you have subs, because then the floor standers aren't working in...
Forum: Subwoofers, Bass, and Transducers   05-27-2015, 07:28 AM
Replies: 13
Views: 219
Posted By Bill Fitzmaurice
Cancellation will occur where the baffle is 1/4...

Cancellation will occur where the baffle is 1/4 wavelength from the wall behind the speakers. With subs you place them close enough so that they're not within 1/4 wavelength in their passband, with...
Forum: Subwoofers, Bass, and Transducers   05-27-2015, 06:04 AM
Replies: 13
Views: 219
Posted By Bill Fitzmaurice
Separate. The best location for subs very seldom...

Separate. The best location for subs very seldom coincides with the best location for mains. Even removing other placement issues from the equation, and they are numerous, Allison Effect alone...
Forum: Subwoofers, Bass, and Transducers   05-27-2015, 05:53 AM
Replies: 264
Views: 5,885
Posted By Bill Fitzmaurice
+1. The original source is unknown, perhaps...

+1. The original source is unknown, perhaps Samuel Johnson, but it certainly applies:
"Better to remain silent and be thought a fool than speak and remove all doubt."

Beam me up, Scotty....
Forum: DIY Speakers and Subs   05-27-2015, 05:46 AM
Replies: 25
Views: 598
Posted By Bill Fitzmaurice
No, it was this guy: ...

No, it was this guy:

http://static.tvtropes.org/pmwiki/pub/images/TheMostInterestingManInTheWorld_1426.jpg (http://static.tvtropes.org/pmwiki/pub/images/TheMostInterestingManInTheWorld_1426.jpg)
Forum: Audio Theory, Setup, and Chat   05-27-2015, 05:42 AM
Replies: 43
Views: 547
Posted By Bill Fitzmaurice
No, I don't. I know how to read labels, in the...

No, I don't. I know how to read labels, in the native language, and what they mean. I detect some oenophile snobbery in your response.
Bottled water is an even bigger scam than high priced...
Forum: Audio Theory, Setup, and Chat   05-26-2015, 07:04 PM
Replies: 43
Views: 547
Posted By Bill Fitzmaurice
+1. I tried some $8 Sicilian wine this week, very...

+1. I tried some $8 Sicilian wine this week, very good, and quite unlike a typical Italian wine. More full bodied than a montepulciano, but lighter than a burgundy. I suspect the grapes are probably...
Forum: Audio Theory, Setup, and Chat   05-26-2015, 03:38 PM
Replies: 43
Views: 547
Posted By Bill Fitzmaurice
Not really. I drink wine everyday, and what I...

Not really. I drink wine everyday, and what I drink is $8-12 dollar varieties. Mostly Italian and French, what would be their equivalent of two-buck Chuck, though vastly better. I can spend $20 and...
Forum: Subwoofers, Bass, and Transducers   05-26-2015, 03:08 PM
Replies: 264
Views: 5,885
Posted By Bill Fitzmaurice
+1. In auto sound cabin gain (also referred to as...

+1. In auto sound cabin gain (also referred to as pressure vessel gain) is everything, it's what allows SPL readings that cannot be realized in a larger space....
Showing results 1 to 25 of 5000

 
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