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Forum: Subwoofers, Bass, and Transducers   04-24-2017, 07:37 PM
Replies: 57
Views: 891
Posted By Bill Fitzmaurice
The AVR may not give you that option. However,...

The AVR may not give you that option. However, there's no reason why you can't use the internal low pass filters in subs in conjunction with the AVR crossover to increase the low pass filter slope....
Forum: Audio Theory, Setup, and Chat   04-24-2017, 07:26 PM
Replies: 30
Views: 294
Posted By Bill Fitzmaurice
If you want to fully understand how line arrays...

If you want to fully understand how line arrays work you'll have to read a book, or at the very least a chapter in one. It's not a subject that can be covered in a paragraph or two. You've got the...
Forum: Subwoofers, Bass, and Transducers   04-24-2017, 03:28 PM
Replies: 57
Views: 891
Posted By Bill Fitzmaurice
If you can easily localize a sub the crossover is...

If you can easily localize a sub the crossover is too high and/or it's playing too loud. Mine is literally a foot behind my head and I can't localize it.
Forum: Audio Theory, Setup, and Chat   04-24-2017, 03:24 PM
Replies: 30
Views: 294
Posted By Bill Fitzmaurice
There's no secret, they've been around since the...

There's no secret, they've been around since the 1940s. Harry Olson explained how they function way back when, Jim Griffin and Mark Ureda (JBL Professional) are more current sources.
Forum: Speakers   04-24-2017, 09:21 AM
Replies: 8
Views: 109
Posted By Bill Fitzmaurice
Let me guess. You read the manual. Shame on you. ...

Let me guess. You read the manual. Shame on you.

http://www.tehbias.com/forum/Smileys/tb2006/revoked.gif
Forum: Subwoofers, Bass, and Transducers   04-23-2017, 06:24 PM
Replies: 57
Views: 891
Posted By Bill Fitzmaurice
Right now you're getting a cancellation centered...

Right now you're getting a cancellation centered where 14 feet is 1/4 wavelength. That's 20Hz. If you add a second sub at the back of the room it would get a cancellation centered where 11 feet is...
Forum: Subwoofers, Bass, and Transducers   04-23-2017, 03:33 PM
Replies: 57
Views: 891
Posted By Bill Fitzmaurice
Probably. Multiple subs are used to smooth...

Probably. Multiple subs are used to smooth response. When both subs are in the front of the room smoothing will be minimal, if there's any at all. For that matter the front of the room isn't...
Forum: Audio Theory, Setup, and Chat   04-23-2017, 06:26 AM
Replies: 30
Views: 294
Posted By Bill Fitzmaurice
Same answer as above, with the right filtering of...

Same answer as above, with the right filtering of the tweeters it could work very well. Without it comb filtering of the highs is a given.
Forum: Audio Theory, Setup, and Chat   04-22-2017, 07:05 PM
Replies: 30
Views: 294
Posted By Bill Fitzmaurice
+1. It's possible to make that work reasonably...

+1. It's possible to make that work reasonably well with a very sophisticated filter network, but it's very unlikely that was done. A vertical line of two to four tweeters wouldn't need anything more...
Forum: Speakers   04-22-2017, 06:57 PM
Replies: 8
Views: 203
Posted By Bill Fitzmaurice
It's not unusual when setting up subs to put the...

It's not unusual when setting up subs to put the volume too high, in an effort to 'really hear/feel' what they're doing. When well adjusted subs shouldn't be obvious with what they're doing, but...
Forum: Audio Theory, Setup, and Chat   04-22-2017, 09:24 AM
Replies: 30
Views: 294
Posted By Bill Fitzmaurice
Sure, with subs of course.

Sure, with subs of course.
Forum: Speakers   04-22-2017, 08:15 AM
Replies: 8
Views: 203
Posted By Bill Fitzmaurice
It shouldn't, as that would only be in the...

It shouldn't, as that would only be in the vicinity of ten watts, if not less.
Forum: Audio Theory, Setup, and Chat   04-22-2017, 06:22 AM
Replies: 22
Views: 215
Posted By Bill Fitzmaurice
Why not a disco ball? :)

Why not a disco ball? :)
Forum: Speakers   04-22-2017, 06:16 AM
Replies: 8
Views: 203
Posted By Bill Fitzmaurice
That's not port noise. It's most likely the...

That's not port noise. It's most likely the driver reaching its excursion limit. It will stop making that noise, and all sound for that matter, if you continue to run it too hard.
That's another...
Forum: DIY Speakers and Subs   04-21-2017, 07:19 PM
Replies: 6
Views: 109
Posted By Bill Fitzmaurice
You should have asked before attaching the first...

You should have asked before attaching the first one. ;)
Yes. Gaps will cause the pipe frequency to be higher than the design calls for.
Forum: Audio Theory, Setup, and Chat   04-21-2017, 03:07 PM
Replies: 30
Views: 294
Posted By Bill Fitzmaurice
Not all of us do. For instance: ...

Not all of us do. For instance:

http://billfitzmaurice.com/images/cabs/SLA.jpg

Another example:
https://www.parts-express.com/Data/Default/Images/Catalog/Original/301-980_ALT_1.jpg
Forum: DIY Speakers and Subs   04-21-2017, 01:33 PM
Replies: 6
Views: 109
Posted By Bill Fitzmaurice
They will. A transmission line is a tuned pipe,...

They will. A transmission line is a tuned pipe, gaps in the construction will affect the tuning. How much one can't say.

Your issues with not being able to cut perfect pieces is hardly isolated....
Forum: Speakers   04-21-2017, 12:16 PM
Replies: 249
Views: 6,270
Posted By Bill Fitzmaurice
+1. I laughed so hard I almost pissed myself. I...

+1. I laughed so hard I almost pissed myself. I can't decide which is more amusing, that someone would print this crap, or that someone would believe it. :D
Forum: Subwoofers, Bass, and Transducers   04-21-2017, 11:35 AM
Replies: 4
Views: 74
Posted By Bill Fitzmaurice
I've never heard anything like that before, so I...

I've never heard anything like that before, so I can't even venture a guess as to the cause. As Jim said so diplomatically Technical Pro isn't a good brand, and should be avoided.
Forum: Subwoofers, Bass, and Transducers   04-21-2017, 09:59 AM
Replies: 57
Views: 3,187
Posted By Bill Fitzmaurice
The main difference is if the room is small you...

The main difference is if the room is small you can use sealed subs and still get good response to 20Hz and lower, due to cabin gain. Larger rooms pretty much demand ported cabs. The dividing line...
Forum: Subwoofers, Bass, and Transducers   04-21-2017, 09:52 AM
Replies: 4
Views: 78
Posted By Bill Fitzmaurice
Keep it. You can never have too many subs. You...

Keep it. You can never have too many subs. You can have too few, and one is too few.
Forum: DIY Speakers and Subs   04-21-2017, 09:47 AM
Replies: 5
Views: 141
Posted By Bill Fitzmaurice
So long as you cross over far enough below the...

So long as you cross over far enough below the break up with sufficient slope it's not an issue.
Forum: Speakers   04-21-2017, 08:16 AM
Replies: 10
Views: 153
Posted By Bill Fitzmaurice
I doubt it. If they did not a single horizontal...

I doubt it. If they did not a single horizontal MTM center would be able to realize it.
Forum: Speakers   04-21-2017, 06:56 AM
Replies: 10
Views: 153
Posted By Bill Fitzmaurice
I'm not aware of in-walls that use drivers that...

I'm not aware of in-walls that use drivers that give wider dispersion than free standing cabs. The B&W CWM7.3 doesn't.
My L/R do have wider dispersion than average, accomplished by using 4 inch...
Forum: Speakers   04-21-2017, 05:13 AM
Replies: 10
Views: 153
Posted By Bill Fitzmaurice
+1. My L/R are literally touching the side walls....

+1. My L/R are literally touching the side walls. They're specifically designed to do so, but that doesn't mean that you can't do the same with any speaker. The main caveat is that they must be toe'd...
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