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Search: Keyword(s): ; Posts Made By: Bill Fitzmaurice
Forum: Subwoofers, Bass, and Transducers   07-27-2016, 02:11 PM
Replies: 17
Views: 352
Posted By Bill Fitzmaurice
There was a loss, of midbass and higher...

There was a loss, of midbass and higher harmonics. Carpet and pad have no effect below 100Hz. You may just prefer the higher THD that front-firing gives.
Forum: Subwoofers, Bass, and Transducers   07-26-2016, 07:08 PM
Replies: 17
Views: 352
Posted By Bill Fitzmaurice
When Speaker Builder magazine did its annual DIY...

When Speaker Builder magazine did its annual DIY speaker competition the listening tests were literally blind, with the speakers placed behind an acoustically transparent black scrim. When the...
Forum: Subwoofers, Bass, and Transducers   07-25-2016, 07:21 PM
Replies: 17
Views: 352
Posted By Bill Fitzmaurice
Down firing filters out some above bandwidth...

Down firing filters out some above bandwidth harmonics, as they don't go around corners all that well. So does rear firing. There are no advantages to forward firing, other than you can see the...
Forum: Speakers   07-25-2016, 03:27 PM
Replies: 8
Views: 128
Posted By Bill Fitzmaurice
That's pretty typical. You may be OK with 4 ohm...

That's pretty typical. You may be OK with 4 ohm surrounds, as they usually don't get sent much power anyway, but the only way you'll find out if they'll cause a problem is the hard way.
Forum: Speakers   07-25-2016, 01:55 PM
Replies: 16
Views: 200
Posted By Bill Fitzmaurice
Yes, within reason. So long as the speaker is...

Yes, within reason. So long as the speaker is adjacent or very nearly so to the screen your visual directional cues will over-ride your auditory directional cues and the sound will seem to come from...
Forum: Speakers   07-25-2016, 01:50 PM
Replies: 13
Views: 164
Posted By Bill Fitzmaurice
+1, which is why we both already noted that the...

+1, which is why we both already noted that the drapes would have to be heavy and lined. Thin drapes would not only affect only very high frequencies, they'd also only affect reflected waves coming...
Forum: Speakers   07-25-2016, 10:51 AM
Replies: 8
Views: 128
Posted By Bill Fitzmaurice
That only says how much power it can develop into...

That only says how much power it can develop into 8 ohm loads. What you need to know is the minimum impedance load it's rated to handle. Keep looking.
Forum: Speakers   07-25-2016, 10:48 AM
Replies: 13
Views: 164
Posted By Bill Fitzmaurice
It would reduce midrange and high frequency...

It would reduce midrange and high frequency reflections off that wall.
Forum: Speakers   07-25-2016, 08:25 AM
Replies: 13
Views: 164
Posted By Bill Fitzmaurice
If they are heavy and lined they'll probably...

If they are heavy and lined they'll probably improve room response.
Forum: Speakers   07-25-2016, 08:23 AM
Replies: 8
Views: 128
Posted By Bill Fitzmaurice
Not if the AVR is rated for 4 ohms.

Not if the AVR is rated for 4 ohms.
Forum: Subwoofers, Bass, and Transducers   07-24-2016, 01:42 PM
Replies: 5
Views: 77
Posted By Bill Fitzmaurice
You are. The radiation pattern from a sub, both...

You are. The radiation pattern from a sub, both the cone and port, is omni-directional. The difference heard at various listening positions is caused by the different distance relationships between...
Forum: DIY Speakers and Subs   07-24-2016, 07:53 AM
Replies: 16
Views: 603
Posted By Bill Fitzmaurice
Insane is the correct term. Visually impressive...

Insane is the correct term. Visually impressive if you have no clue as to how loudspeakers work, and clearly whoever put that monstrosity together doesn't. :(
Forum: Speakers   07-24-2016, 06:39 AM
Replies: 86
Views: 2,717
Posted By Bill Fitzmaurice
Of those three, the Polk. Two woofers are better...

Of those three, the Polk. Two woofers are better than one.
Forum: DIY Speakers and Subs   07-24-2016, 06:30 AM
Replies: 230
Views: 4,402
Posted By Bill Fitzmaurice
That admission places you on the preferred end of...

That admission places you on the preferred end of the Dunning-Kruger effect scale. :)
Or, as Dirty Harry would say:
https://www.youtube.com/watch?v=_VrFV5r8cs0
Forum: Audio Theory, Setup, and Chat   07-24-2016, 06:09 AM
Replies: 19
Views: 462
Posted By Bill Fitzmaurice
That's where your sub woofers should be handling...

That's where your sub woofers should be handling the load, not your mains.
Forum: Subwoofers, Bass, and Transducers   07-23-2016, 07:31 PM
Replies: 6
Views: 186
Posted By Bill Fitzmaurice
I'd say it's more of a program material issue,...

I'd say it's more of a program material issue, especially if it happens with the same source. Engineers are getting more and more bass happy, which means if you're going to keep up with the bass wars...
Forum: Speakers   07-23-2016, 12:56 PM
Replies: 33
Views: 399
Posted By Bill Fitzmaurice
Or to another piece in the system that has a...

Or to another piece in the system that has a three wire cord and a ground screw on the chassis. The downside is that it might result in a ground loop, but you'll only know by trying it.
Forum: DIY Speakers and Subs   07-23-2016, 12:28 PM
Replies: 230
Views: 4,402
Posted By Bill Fitzmaurice
I guess that makes you the Donald Trump of...

I guess that makes you the Donald Trump of loudspeaker technology. :D
Forum: DIY Speakers and Subs   07-23-2016, 05:52 AM
Replies: 8
Views: 145
Posted By Bill Fitzmaurice
If it's very smooth then you don't need to sand....

If it's very smooth then you don't need to sand. Typically when painting a car you specifically do not want to sand the color coat, as the clear coat will adhere better if it's not sanded. But that...
Forum: Speakers   07-23-2016, 05:42 AM
Replies: 32
Views: 800
Posted By Bill Fitzmaurice
True, unless you count politics as an industry. :)

True, unless you count politics as an industry. :)
Forum: DIY Speakers and Subs   07-22-2016, 07:08 PM
Replies: 230
Views: 4,402
Posted By Bill Fitzmaurice
I use angle braces where you can't use panel to...

I use angle braces where you can't use panel to panel braces, like where the driver would get in the way. I also use them where they can do double duty, as corner located ports. In a structural...
Forum: DIY Speakers and Subs   07-22-2016, 01:55 PM
Replies: 230
Views: 4,402
Posted By Bill Fitzmaurice
And yet only a few months ago you stated that...

And yet only a few months ago you stated that this was the best way to brace a cab:
http://i.imgur.com/tClPplll.png
Has your understanding of how speakers work and how to build them expanded all...
Forum: Subwoofers, Bass, and Transducers   07-22-2016, 11:54 AM
Replies: 18
Views: 202
Posted By Bill Fitzmaurice
Unless they happen to be in an automobile there's...

Unless they happen to be in an automobile there's no such thing as 'fast' and 'slow' subwoofers. :rolleyes:
Forum: Subwoofers, Bass, and Transducers   07-22-2016, 10:16 AM
Replies: 2
Views: 54
Posted By Bill Fitzmaurice
Technically yes, but you still have to software...

Technically yes, but you still have to software model the cab, using the specs of the passive radiator to get the result.
Forum: Subwoofers, Bass, and Transducers   07-22-2016, 10:12 AM
Replies: 6
Views: 186
Posted By Bill Fitzmaurice
That's typical of both driver over-excursion and...

That's typical of both driver over-excursion and amplifier clipping.
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