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Forum: Speakers   09-01-2014, 12:32 PM
Replies: 3
Views: 43
Posted By Bill Fitzmaurice
Whatever brand you go with there's nothing to be...

Whatever brand you go with there's nothing to be gained by using a fifteen inch woofer that goes to 40Hz, unless you don't have subs. A twelve inch woofer flat to 60Hz is all you need. It will have...
Forum: Audio theory, Setup and Chat   09-01-2014, 08:19 AM
Replies: 15
Views: 388
Posted By Bill Fitzmaurice
It's not that my room isn't 'treated', just that...

It's not that my room isn't 'treated', just that all the treatments are part and parcel of the room, rather than add-ons that serve no other purpose. For instance, when I remodeled I used wood fiber...
Forum: DIY Speakers and Subs   09-01-2014, 08:12 AM
Replies: 9
Views: 274
Posted By Bill Fitzmaurice
He does, almost exclusively, mainly because it's...

He does, almost exclusively, mainly because it's available to him in New Zealand. He can't get BB there at all. I'd use Italian Poplar if I could get it, but I can't locally.
Forum: Audio theory, Setup and Chat   09-01-2014, 06:25 AM
Replies: 15
Views: 388
Posted By Bill Fitzmaurice
My room is 15 x 20 feet. I'm in Laconia. Never...

My room is 15 x 20 feet. I'm in Laconia. Never heard of Newton, it must be one of those post office and a gas station towns. I once lived in Georges Mills, which fits that description.
Forum: DIY Speakers and Subs   09-01-2014, 06:19 AM
Replies: 9
Views: 274
Posted By Bill Fitzmaurice
Popular isn't a wood species. Poplar is. ...

Popular isn't a wood species. Poplar is.
Italian Poplar plywood is very much like Baltic Birch, with many thin laminations and full thickness outer layers. It has the advantage of being much...
Forum: Subwoofers, Bass, and Transducers   09-01-2014, 06:05 AM
Replies: 13
Views: 218
Posted By Bill Fitzmaurice
You pointed them out yourself.

You pointed them out yourself.
Forum: Audio theory, Setup and Chat   08-31-2014, 07:48 PM
Replies: 15
Views: 388
Posted By Bill Fitzmaurice
That's what I have in my room and it has zero...

That's what I have in my room and it has zero issues. The only 'treatment' I have is thick textured wallpaper, which is amazingly effective in taming high frequency reflections. Otherwise it's just...
Forum: Subwoofers, Bass, and Transducers   08-31-2014, 07:34 PM
Replies: 13
Views: 218
Posted By Bill Fitzmaurice
You've already diagnosed the problem. The cure is...

You've already diagnosed the problem. The cure is to fix the room.
If you want to see if a pad will help have a friend lift the sub off the floor while you listen, eyes closed, so that you don't...
Forum: Audio theory, Setup and Chat   08-31-2014, 05:01 PM
Replies: 80
Views: 1,356
Posted By Bill Fitzmaurice
I know that you guys are having a grand old time,...

I know that you guys are having a grand old time, but the OP hasn't seen a single one of your posts after reading my reply six days ago.
...
Forum: Subwoofers, Bass, and Transducers   08-31-2014, 04:33 PM
Replies: 21
Views: 580
Posted By Bill Fitzmaurice
Not your fault, it's the fault of the geek who...

Not your fault, it's the fault of the geek who first incorrectly applied the term. He knew what he wanted to say, but didn't know the correct way to say it. One of the values of a place like this is...
Forum: Speakers   08-31-2014, 02:47 PM
Replies: 37
Views: 428
Posted By Bill Fitzmaurice
Many more undergo something more akin to...

Many more undergo something more akin to Stockholm Syndrome. Of course, the same applies to many buyers of overpriced cables, power conditioners, isolation devices, shakti stones, magic pebbles...the...
Forum: Speakers   08-31-2014, 02:29 PM
Replies: 37
Views: 428
Posted By Bill Fitzmaurice
It's not that it's bad, the issue is that you...

It's not that it's bad, the issue is that you could have gotten just as good a result spending half as much elsewhere. The time to have come here for advice was before you paid twice what you should...
Forum: DIY Speakers and Subs   08-31-2014, 12:34 PM
Replies: 9
Views: 274
Posted By Bill Fitzmaurice
The only plywood I'll use from big boxes is the...

The only plywood I'll use from big boxes is the Arauco brand, because it has five full plies in 1/2", seven full plies in 3/4", using good glue with no thin outer veneer layers. Almost everything...
Forum: DIY Speakers and Subs   08-31-2014, 12:23 PM
Replies: 3
Views: 113
Posted By Bill Fitzmaurice
WinISD gives you the box net internal volume,...

WinISD gives you the box net internal volume, which means that you have to add to it that volume taken up by the driver, panel thickness, bracing and the port ducting. You have to do the rest of the...
Forum: Subwoofers, Bass, and Transducers   08-31-2014, 12:15 PM
Replies: 21
Views: 580
Posted By Bill Fitzmaurice
It does, but so does every subwoofer. That...

It does, but so does every subwoofer. That doesn't mean that it must be in a corner, just as any other subwoofer doesn't have to be in a corner. It just works better when it is.
Forum: Subwoofers, Bass, and Transducers   08-31-2014, 10:52 AM
Replies: 21
Views: 580
Posted By Bill Fitzmaurice
Its the same speaker with the same response, only...

Its the same speaker with the same response, only the shape is different.
Mutually couple. Co-locate is a computer term, not audio, misapplied to audio by geeks. ;)
Forum: Subwoofers, Bass, and Transducers   08-31-2014, 08:40 AM
Replies: 84
Views: 2,448
Posted By Bill Fitzmaurice
In the hierarchy of what matters most frequency...

In the hierarchy of what matters most frequency response is number one, followed by THD, S/N, then maximum uncompressed SPL. You'll often see references to group delay and transient response, but...
Forum: DIY Speakers and Subs   08-31-2014, 06:17 AM
Replies: 23
Views: 532
Posted By Bill Fitzmaurice
More likely someone at PE took it out of the box,...

More likely someone at PE took it out of the box, either for another customer or personal use. :mad:
Contact PE, have them make it right. That could mean pulling one out of another box, so it...
Forum: Subwoofers, Bass, and Transducers   08-30-2014, 08:19 AM
Replies: 21
Views: 580
Posted By Bill Fitzmaurice
Yes, but there comes a point of diminishing...

Yes, but there comes a point of diminishing returns, usually once you have four.
Forum: Speakers   08-30-2014, 05:44 AM
Replies: 16
Views: 438
Posted By Bill Fitzmaurice
Probably because so few of us are stone masons. ;)

Probably because so few of us are stone masons. ;)
Forum: Audio theory, Setup and Chat   08-29-2014, 03:12 PM
Replies: 8
Views: 223
Posted By Bill Fitzmaurice
True, and that's why phones are never used for...

True, and that's why phones are never used for mastering. If they were the producer would have to add so much ambience to the mix that it would sound like it was recorded in Grand Central Station...
Forum: Speakers   08-29-2014, 03:09 PM
Replies: 10
Views: 227
Posted By Bill Fitzmaurice
Totally, and playing a driver out of the...

Totally, and playing a driver out of the enclosure could result in damaging it.
A speaker that buzzes is defective. Return it.
Forum: Subwoofers, Bass, and Transducers   08-29-2014, 03:05 PM
Replies: 17
Views: 313
Posted By Bill Fitzmaurice
You are going to have serious bass nulls from the...

You are going to have serious bass nulls from the wave reflection off the wall behind the seats. Since the rows are different distances from that wall the nulls will occur at different frequencies in...
Forum: Speakers   08-29-2014, 02:52 PM
Replies: 16
Views: 438
Posted By Bill Fitzmaurice
+1. If your speaker wants to move about when...

+1. If your speaker wants to move about when placed on carpet then spikes will give a better grip. On marble they wouldn't grip as well as rubber feet or a rubber mat. As for the oft-claimed...
Forum: Subwoofers, Bass, and Transducers   08-29-2014, 01:10 PM
Replies: 17
Views: 313
Posted By Bill Fitzmaurice
Driver output in the subwoofer passband is...

Driver output in the subwoofer passband is omni-directional, just as the port output is. However, you may get quite a bit of above bandwidth harmonic output. Facing the driver towards the wall, away...
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