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Forum: Subwoofers, Bass, and Transducers   10-01-2014, 08:26 AM
Replies: 47
Views: 1,104
Posted By JHAz
No dog in this race, although Hsu was on my short...

No dog in this race, although Hsu was on my short list a couple of years ago when I was planning to upgrade my sub, and when the time comes to actually do so, will at least get a close look.
...
Forum: Receivers, Amps, and Processors   10-01-2014, 08:15 AM
Replies: 72,413
Views: 6,115,821
Posted By JHAz
Assuming no significant absorption, direct aound...

Assuming no significant absorption, direct aound and reflected sound, considered separately, should be equally bright. BUt those of us who live in houses rather than concert halls don't hear direct...
Forum: Audio theory, Setup and Chat   10-01-2014, 07:53 AM
Replies: 132
Views: 2,893
Posted By JHAz
if there is DC in every clipped asymmetrical...

if there is DC in every clipped asymmetrical waveform, then at least since the mid sixties, there's been dc on the outputs of whatever distortion device any guitarist used (find me an electric guitar...
Forum: Audio theory, Setup and Chat   10-01-2014, 07:43 AM
Replies: 132
Views: 2,893
Posted By JHAz
if there is DC in every clipped asymmetrical...

if there is DC in every clipped asymmetrical waveform, then at least since the mid sixties, there's been dc on the outputs of whatever distortion device any guitarist used (find me an electric guitar...
Forum: Receivers, Amps, and Processors   09-29-2014, 04:29 PM
Replies: 117
Views: 11,129
Posted By JHAz
In our universe, you literally cannot feed a...

In our universe, you literally cannot feed a speaker more power at a given spl. The speaker output follows amp voltage output. Ohm's law guarantees current will be the same into the speaker at any...
Forum: Receivers, Amps, and Processors   09-29-2014, 04:22 PM
Replies: 16
Views: 316
Posted By JHAz
Input sensitivity. Different amps have different...

Input sensitivity. Different amps have different outputs with the same input. The less sensitive amp may actually be more powerful (or may not, depending). But how many millivolts it takes to get...
Forum: Receivers, Amps, and Processors   09-29-2014, 09:31 AM
Replies: 7
Views: 100
Posted By JHAz
I agree with what MJH describes, the effects of ...

I agree with what MJH describes, the effects of freeing up the power supply to service fewer channels, resulting in greater power availability in the fewer channels.

But those specs are just a...
Forum: Receivers, Amps, and Processors   09-29-2014, 08:05 AM
Replies: 7
Views: 100
Posted By JHAz
Each channel is (and must be) supplied by a...

Each channel is (and must be) supplied by a separate power amplifier, and in modern receivers all channels have the same output capability. So the watts from the front three can't be redirected to...
Forum: Audio theory, Setup and Chat   09-29-2014, 07:54 AM
Replies: 5
Views: 110
Posted By JHAz
Is the quarter inch a TRS (versus single...

Is the quarter inch a TRS (versus single ended/tip and sleeve only)? if not, there's your problem. Just google trs if you don't' know what they look like. Stand for tip, ring, sleeve and allows...
Forum: Audio theory, Setup and Chat   09-26-2014, 11:57 AM
Replies: 53
Views: 1,027
Posted By JHAz
Folks have thought about this before Without...

Folks have thought about this before Without taking any position on accuracy, etc., I quickly found this as an example of measurement and correlation to sonic effects (focus, apparently, on...
Forum: Receivers, Amps, and Processors   09-26-2014, 07:33 AM
Replies: 72,413
Views: 6,115,821
Posted By JHAz
movies are mixed on systems calibrated to...

movies are mixed on systems calibrated to (probably a successor to the decades old) X-Curve, which has about twice the treble rolloff of the Audyssey curve. With that much less treble energy in the...
Forum: Receivers, Amps, and Processors   09-24-2014, 05:10 PM
Replies: 6
Views: 166
Posted By JHAz
Leaving aside very real issues regarding...

Leaving aside very real issues regarding audibility of differences between amps designed to operate linearly and operating within their linear range, you overlook the cost savings of mass...
Forum: Receivers, Amps, and Processors   09-22-2014, 03:40 PM
Replies: 8
Views: 174
Posted By JHAz
Its called a volume control. More power means...

Its called a volume control. More power means louder so quieter means less power. Silent moments mean zero power.

If you turn down you use less power. If you pay attention you will hear the...
Forum: Audio theory, Setup and Chat   09-22-2014, 03:28 PM
Replies: 2
Views: 174
Posted By JHAz
It is also somewhere between possible and likely...

It is also somewhere between possible and likely that thr BD and DVD have different audio mixes, making direct comparison of the storage systems impossible. As an extreme example, Master and...
Forum: Receivers, Amps, and Processors   09-18-2014, 02:57 PM
Replies: 19
Views: 462
Posted By JHAz
To double loudness takes ten times the power. To...

To double loudness takes ten times the power. To get three dB louder (about "one notch" or enough to be meaningful)takes double the power. To get one dB louder (noticable in some circumstances)...
Forum: Speakers   09-18-2014, 02:40 PM
Replies: 39
Views: 960
Posted By JHAz
Also, its sensitivity, not efficiency. A very...

Also, its sensitivity, not efficiency. A very efficient speakrr converts less than three percent of incoming power into sound. Efficiency of 1.5 percent sounds a lot worse on a spec sheet than 98dB...
Forum: Speakers   09-18-2014, 02:34 PM
Replies: 39
Views: 960
Posted By JHAz
One little nit is that lower impedance speakers...

One little nit is that lower impedance speakers are often specified not at one watt but at the voltage that yields one watt at 8 ohms. All other things being equal that means a 4 ohm speaker might...
Forum: Audio theory, Setup and Chat   09-17-2014, 08:20 AM
Replies: 29
Views: 1,160
Posted By JHAz
I just disagree on what's an odd harmonic. The...

I just disagree on what's an odd harmonic. The classic definition of a square wave, for example is the fundamental plus (theoretically infinite) odd order harmonics at the level of fundamental...
Forum: Audio theory, Setup and Chat   09-12-2014, 03:34 PM
Replies: 99
Views: 3,352
Posted By JHAz
No idea how anyone could conclude that...

No idea how anyone could conclude that reasonably. Do you think I would argue otherwise?

The point I am making is very simple. If the substance under test does cure, say, 1% of people via...
Forum: Audio theory, Setup and Chat   09-12-2014, 03:17 PM
Replies: 29
Views: 1,160
Posted By JHAz
Umm, in my grade school we learned that 2, 4, 8...

Umm, in my grade school we learned that 2, 4, 8 as well as 6 and 10 are even numbers while 3, 5, 7 and 9 are odd.

On another note, fwiw, the received wisdom is that the tweed fender bandmaster...
Forum: Receivers, Amps, and Processors   09-11-2014, 10:42 AM
Replies: 5
Views: 173
Posted By JHAz
you might try connecting the center to, say, the...

you might try connecting the center to, say, the left front speaker output and see what happens. At least would rule out something funny in the Denon's center channel . . .
Forum: Subwoofers, Bass, and Transducers   09-11-2014, 08:41 AM
Replies: 63
Views: 1,203
Posted By JHAz
the correct answer has been given multiple times....

the correct answer has been given multiple times. You have it understood now. It's not correct to say you cannot get the load down to 1 ohm with resistors. You certainly can. So just saying no is...
Forum: Audio theory, Setup and Chat   09-11-2014, 08:30 AM
Replies: 99
Views: 3,352
Posted By JHAz
If ten percent of people in the test who get the...

If ten percent of people in the test who get the placebo get better, and ten percent of the people who get the drug under test also get better, how in the world could anybody conclude that some of...
Forum: Receivers, Amps, and Processors   09-11-2014, 08:12 AM
Replies: 5
Views: 173
Posted By JHAz
I'd go to the speaker forum and get direction on...

I'd go to the speaker forum and get direction on getting the speakers operational. If you're using a single connection and not all the jumpers are in place, the speakers will by definition be...
Forum: Audio theory, Setup and Chat   09-09-2014, 02:56 PM
Replies: 24
Views: 591
Posted By JHAz
From a high fidelity perspective what you hear on...

From a high fidelity perspective what you hear on the phone is utterly unrelated to the live sound of the person's voice. Lows are absent even for female voices and highs are severely rolled off. ...
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