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Forum: DIY Speakers and Subs   10-24-2014, 09:19 AM
Replies: 31
Views: 181
Posted By Bill Fitzmaurice
http://www.harman.com/EN-US/OurCompany/Innovation/...

http://www.harman.com/EN-US/OurCompany/Innovation/Documents/White%20Papers/multsubs.pdf
Forum: DIY Speakers and Subs   10-24-2014, 07:54 AM
Replies: 31
Views: 181
Posted By Bill Fitzmaurice
This explains why: ...

This explains why:
http://www.prosoundweb.com/article/in_search_of_the_power_alley/

This tends to be more of an issue in large venues, where the direct radiation from the subs dominates response,...
Forum: Speakers   10-24-2014, 06:10 AM
Replies: 11
Views: 177
Posted By Bill Fitzmaurice
Insufficient data. You need to see an SPL chart...

Insufficient data. You need to see an SPL chart and you need to know the Vd Theile/Small spec of the drivers. BTW, they won't go to 24kHz or 35kHz. They might go to 2.4kHz and 3.5kHz.
That's not...
Forum: Subwoofers, Bass, and Transducers   10-23-2014, 03:29 PM
Replies: 9
Views: 347
Posted By Bill Fitzmaurice
PRs are not inherently louder than ported.

PRs are not inherently louder than ported.
Forum: Audio theory, Setup and Chat   10-23-2014, 01:33 PM
Replies: 742
Views: 23,732
Posted By Bill Fitzmaurice
They used it on Apollo 13 to piece together a...

They used it on Apollo 13 to piece together a jury rigged carbon dioxide scrubber.
Forum: Audio theory, Setup and Chat   10-23-2014, 12:15 PM
Replies: 742
Views: 23,732
Posted By Bill Fitzmaurice
That's when it started to be used to seal heating...

That's when it started to be used to seal heating duct seams, when central forced hot air heating systems became popular. Many think that it's called duck tape, but Red Green knows better, though he...
Forum: Subwoofers, Bass, and Transducers   10-23-2014, 08:16 AM
Replies: 22
Views: 403
Posted By Bill Fitzmaurice
Massive overkill, in fact. With 2 foot runs 16ga...

Massive overkill, in fact. With 2 foot runs 16ga is plenty.
http://www.bcae1.com/images/swfs/speakerwireselectorassistant.swf
Forum: DIY Speakers and Subs   10-23-2014, 07:50 AM
Replies: 52
Views: 1,928
Posted By Bill Fitzmaurice
Sprayed can give a spatter finish that rolling...

Sprayed can give a spatter finish that rolling cannot. If you don't want a spattered finish there's no particular reason to spray.
Forum: HDTV Programming   10-23-2014, 07:44 AM
Replies: 1,360
Views: 93,356
Posted By Bill Fitzmaurice
I stopped watching after the second episode this...

I stopped watching after the second episode this season. The series should have ended at least a season ago, that's when the logical story arc had run its course. But since the network kept renewing...
Forum: DIY Speakers and Subs   10-23-2014, 07:07 AM
Replies: 52
Views: 1,928
Posted By Bill Fitzmaurice
That's what most people use.

That's what most people use.
Forum: Speakers   10-23-2014, 05:43 AM
Replies: 700
Views: 13,244
Posted By Bill Fitzmaurice
Making that decision ten pages ago you should...

Making that decision ten pages ago you should have done. :D
Trolls only return if you continue to feed them. When you don't they move on.
Forum: Audio theory, Setup and Chat   10-22-2014, 01:54 PM
Replies: 742
Views: 23,732
Posted By Bill Fitzmaurice
The Golden Gate was built as it was primarily for...

The Golden Gate was built as it was primarily for two reasons. It had to be high enough with a wide enough passage below it to allow even the largest aircraft carriers and battleships to pass below...
Forum: Audio theory, Setup and Chat   10-22-2014, 08:14 AM
Replies: 4
Views: 139
Posted By Bill Fitzmaurice
What do you mean by 1d and 2d? If it's dimensions...

What do you mean by 1d and 2d? If it's dimensions a diffuser must be 3d or it isn't a diffuser.
Forum: Audio theory, Setup and Chat   10-22-2014, 06:14 AM
Replies: 4
Views: 150
Posted By Bill Fitzmaurice
Decoding is done by the last device in the signal...

Decoding is done by the last device in the signal chain before the sound goes to the speakers, making it the AVR. Decoding done by a TV would only apply to sound produced by the TV internal speakers,...
Forum: Audio theory, Setup and Chat   10-22-2014, 06:08 AM
Replies: 1
Views: 109
Posted By Bill Fitzmaurice
The crawl does work, to a point. A better method...

The crawl does work, to a point. A better method than using your ears while on your knees is to put the sub at the LP, run an RTA program, walk the room with the mic, looking for the spot where the...
Forum: Subwoofers, Bass, and Transducers   10-22-2014, 06:02 AM
Replies: 22
Views: 403
Posted By Bill Fitzmaurice
Once you get to about 50 cents a foot for the...

Once you get to about 50 cents a foot for the wire and 5 dollars each for the connectors there is nothing 'better'. So for a ten foot cable, for instance, don't spend more than $20, tops. If you do...
Forum: Audio theory, Setup and Chat   10-21-2014, 02:12 PM
Replies: 5
Views: 106
Posted By Bill Fitzmaurice
Yes, at that distance Allison Effect will be...

Yes, at that distance Allison Effect will be moot. Where Allison Effect is problematic is with mains and subs, as the reflected waves come off the front and rear walls, and you're sitting in an...
Forum: Audio theory, Setup and Chat   10-21-2014, 01:40 PM
Replies: 5
Views: 106
Posted By Bill Fitzmaurice
What it's referencing is Allison Effect, where...

What it's referencing is Allison Effect, where the reflected wave cancels the direct wave when the reflecting boundary is 1/4 wavelength behind the speaker, relative to the listening position. In the...
Forum: Audio theory, Setup and Chat   10-21-2014, 11:51 AM
Replies: 742
Views: 23,732
Posted By Bill Fitzmaurice
Nor do tubes over modern SS, but that doesn't...

Nor do tubes over modern SS, but that doesn't stop some from insisting that they're somehow 'better'. One wonders if they have one of these in their driveway:...
Forum: Speakers   10-21-2014, 09:22 AM
Replies: 11
Views: 178
Posted By Bill Fitzmaurice
The Bose Freespace DS 16SE has a single 2.25 inch...

The Bose Freespace DS 16SE has a single 2.25 inch driver, with 16 watt power handling capacity. I can't imagine anyone recommending them for any application, especially at the Bose price of $210....
Forum: Audio theory, Setup and Chat   10-21-2014, 05:09 AM
Replies: 20
Views: 398
Posted By Bill Fitzmaurice
www.rane.com/note110.html...

www.rane.com/note110.html (http://www.rane.com/note110.html)
Forum: Speakers   10-20-2014, 07:07 PM
Replies: 700
Views: 13,244
Posted By Bill Fitzmaurice
Litz cable has no effect within the audio...

Litz cable has no effect within the audio frequency bandwidth. :rolleyes:
I've grown weary of this thread. I leave it with this, which I should have posted back on page 1:

You claim that an...
Forum: Speakers   10-20-2014, 03:29 PM
Replies: 700
Views: 13,244
Posted By Bill Fitzmaurice
BS is a substance. :D Point of fact, an...

BS is a substance. :D

Point of fact, an electron wave in an insulated wire does have a lower speed than in an uninsulated wire. On average it's about 0.7 times the speed of light. Different...
Forum: Audio theory, Setup and Chat   10-20-2014, 02:50 PM
Replies: 28
Views: 438
Posted By Bill Fitzmaurice
You shouldn't, but with the inherent deficiencies...

You shouldn't, but with the inherent deficiencies of unbalanced connections, very often you do. Unbalanced audio connections are OK when you have a small number of devices, all using the same power...
Forum: Speakers   10-20-2014, 02:40 PM
Replies: 700
Views: 13,244
Posted By Bill Fitzmaurice
It's the very definition of Placebo Effect....

It's the very definition of Placebo Effect. Differences can be heard when cables have major differences in resistance, capacitance and inductance, but no matter how great those differences are they...
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