| | | Page 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126, 127, 128, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140, 141, 142, 143, 144 | APOLLO MOON LANDINGS ------- FAKED OR REAL !!??
| Anonymous Coward
User ID: 98001
10/24/2007 3:30 PM | | Re: APOLLO MOON LANDINGS ------- FAKED OR REAL !!?? | Quote |
The outer braided "shield" is not a shield at all, its is a coaxial cable but doesnt have the same function as with rf. It is simply one of two conductors completing the circuit. 50 ohms is the matching impeadance that allows the volume to be set in the middle on the computer to allow an appropriate input level to the auxilary input. Otherwise, without a resistance added the auxillary inputs are overdriven and 1/4 volume on the computer, inviting disaster. Quoting: IDW 316817
Indeed the outer braid on a coaxial audio cable does function as a shield and is connected to the chassis for just that purpose.
So, as I suspected, the chassis of your audio amplifier is connected to the groundplane of your motherboard through the PC's headphone output. If it had a 3-wire power cord, then your motherboard would be grounded. What other devices do you have connected to your PC? |
| nomuse
User ID: 316856
10/24/2007 3:40 PM | | Re: APOLLO MOON LANDINGS ------- FAKED OR REAL !!?? | Quote |
Wow. POTS voltages, bridging amps, shielded cables, speaker polarity -- how many things can one guy get wrong in one day?
Just take one small one here. Speakers DO have polarity. The driver is a small electromagnet that pushes the cone outwards during a positive voltage swing and inwards during a negative voltage swing. Although the driving voltage is AC, if you don't watch the polarity you'll get your speakers out of phase. |
| nomuse
User ID: 316856
10/24/2007 3:44 PM | | Re: APOLLO MOON LANDINGS ------- FAKED OR REAL !!?? | Quote |
SO....
Can we have a show of hands of everyone who checked continuity between motherboard and chassis ground? |
| Anonymous Coward
User ID: 262563
10/24/2007 3:44 PM | | Re: APOLLO MOON LANDINGS ------- FAKED OR REAL !!?? | Quote |
Wow. POTS voltages, bridging amps, shielded cables, speaker polarity -- how many things can one guy get wrong in one day? Quoting: nomuse 316856
Once IDW has dug himself in somewhat deeper, you should break those down into four more lines for 74444's eternal list! |
| IDW
User ID: 316817
10/24/2007 3:46 PM | | Re: APOLLO MOON LANDINGS ------- FAKED OR REAL !!?? | Quote |
Wow. POTS voltages, bridging amps, shielded cables, speaker polarity -- how many things can one guy get wrong in one day?
Just take one small one here. Speakers DO have polarity. The driver is a small electromagnet that pushes the cone outwards during a positive voltage swing and inwards during a negative voltage swing. Although the driving voltage is AC, if you don't watch the polarity you'll get your speakers out of phase. Quoting: nomuse 316856
Yeah, I remember when I taught you that about speaker phasing, and why there are red and black terminals on both speakers and audio output terminals.
The "polarity" is not - or +, its just a reference to insure that the speakers are in sync so that bass is not canceled. Remember that?
Saying I am wrong repeatedly in a situation where only your team and myself are present , and where it is obvious you are lying is a bit desperate on your part. What was I wrong about, in particular?
THOUGHT SO! |
| IDW
User ID: 316817
10/24/2007 3:48 PM | | Re: APOLLO MOON LANDINGS ------- FAKED OR REAL !!?? | Quote |
Wow. POTS voltages, bridging amps, shielded cables, speaker polarity -- how many things can one guy get wrong in one day?
Once IDW has dug himself in somewhat deeper, you should break those down into four more lines for 74444's eternal list! Quoting: Anonymous Coward 262563
But I bet it wont be my words, will it?
I challenge you to be honest, and edit your list to only things I have actually said, exactly the way I stated them without careful manipulation. Nothing I have said on the last two pages in error. If it is , point out SPECIFICALLY how, and why. |
| Anonymous Coward
User ID: 98001
10/24/2007 3:49 PM | | Re: APOLLO MOON LANDINGS ------- FAKED OR REAL !!?? | Quote |
Impedance matching is a topic that is not done with solid state audio amplifier outputs. They are typically totem pole circuits that when analyzed are simply a signal controlled power supply with an output impedance of well under 1 ohm....typically under 0.1 ohm. Unlike tube-type amplifiers that have a transformer in their output stage to transform a high plate load impedance to a much lower speaker load impedance, solid state amplifiers work on an entirely different principle and do not require impedance matching at their outputs. They are rated soley to provide a reference for their power ratings. They have an internal power supply voltage, typically between positive and negative rails referenced to ground, which the output voltage swings cannot exceed. Therefore in order to produce a given amount of wattage, the load impedance for that wattage must be specified. However, matching it is not neccessary and is virtually impossible due to the fact that tyical speaker loads are on the order of 4 to 8 ohms and the actual output impedance of the amp is typically less than one-tenth of an ohm. |
| Anonymous Coward
User ID: 98001
10/24/2007 3:52 PM | | Re: APOLLO MOON LANDINGS ------- FAKED OR REAL !!?? | Quote |
I challenge you to be honest, and edit your list to only things I have actually said, exactly the way I stated them without careful manipulation. Nothing I have said on the last two pages in error. If it is , point out SPECIFICALLY how, and why. Quoting: IDW 316817
How about this:
"THE MOTHERBOARD OF A COMPUTER IS NOT GROUNDED, AND ANY ATTEMPT TO DO SO WILL INSTANTLY DESTROY IT IF THE POWER SUPPLY IS CONNECTED. I HAD THOUGHT THIS SUBJECT HAD BEEN SETTLED, BUT BEING THE IDIOT YOU ARE YOU CANNOT SEE THE FUTILITY IN YOUR EFFORTS."
Do you still stand by that little tidbit of misinformation? |
| IDW
User ID: 316817
10/24/2007 3:57 PM | | Re: APOLLO MOON LANDINGS ------- FAKED OR REAL !!?? | Quote |
Indeed the outer braid on a coaxial audio cable does function as a shield and is connected to the chassis for just that purpose. Quoting: Anonymous Coward 98001
And just how would this "shield" the alternating current signal? There are just two conductors, the outer braided cable and the inner insulated stranded wire. Its not a shield, sheilded audio cables have a two insulated conductors and a braided shield. With an amplifier, there is no Earth ground. Connecting a shield on an audio cable to a homes ground will result in added noise , 60 htz to be exact. The "ground" terminal on an amplifier is for the turntable.
So, as I suspected, the chassis of your audio amplifier is connected to the groundplane of your motherboard through the PC's headphone output. If it had a 3-wire power cord, then your motherboard would be grounded. What other devices do you have connected to your PC? Quoting: MORON ELECTRICIAN
But it doesnt.
The ground of the power supply on my monitor is isolated from the computer, there is no physical connection. |
| Anonymous Coward
User ID: 98001
10/24/2007 3:59 PM | | Re: APOLLO MOON LANDINGS ------- FAKED OR REAL !!?? | Quote |
SO....
Can we have a show of hands of everyone who checked continuity between motherboard and chassis ground? Quoting: nomuse 316856
In broadcast applications, we have to measure to BE SURE the motherboards and all audio input and output jacks are at ground. Any connection between the PC, such as with printers, fax machines, audio recorders, etc. always involve being cross connected to other equipment that is grounded through their power cords. |
| IDW
User ID: 316817
10/24/2007 4:00 PM | | Re: APOLLO MOON LANDINGS ------- FAKED OR REAL !!?? | Quote |
I challenge you to be honest, and edit your list to only things I have actually said, exactly the way I stated them without careful manipulation. Nothing I have said on the last two pages in error. If it is , point out SPECIFICALLY how, and why.
How about this:
"THE MOTHERBOARD OF A COMPUTER IS NOT GROUNDED, AND ANY ATTEMPT TO DO SO WILL INSTANTLY DESTROY IT IF THE POWER SUPPLY IS CONNECTED. I HAD THOUGHT THIS SUBJECT HAD BEEN SETTLED, BUT BEING THE IDIOT YOU ARE YOU CANNOT SEE THE FUTILITY IN YOUR EFFORTS."
Do you still stand by that little tidbit of misinformation? Quoting: Anonymous Coward 98001
YES. WITHEN THE CONTEXT OF THE DEISCUSSION.
He was refering to an earth ground, stating plainly and falsly that the negative of the cmos batter was earth grounded.
He was confusing earth ground with chassis return path,and had the "common return path" connected to earth ground! he ALSO had the polarity ass backwards. |
| Anonymous Coward
User ID: 98001
10/24/2007 4:04 PM | | Re: APOLLO MOON LANDINGS ------- FAKED OR REAL !!?? | Quote |
Indeed the outer braid on a coaxial audio cable does function as a shield and is connected to the chassis for just that purpose.
And just how would this "shield" the alternating current signal? Quoting: IDW 316817
Ever heard of a Faraday shield? Look it up. You really don't know much about these things, do you?
There are just two conductors, the outer braided cable and the inner insulated stranded wire. Its not a shield, sheilded audio cables have a two insulated conductors and a braided shield. Quoting: IDW 316817
Wrong again. You're talking about a balanced audio cable which has two conductors and a shield. And unbalanced audio cable, like the ones typically used in consumer audio applications, have a center conductor and an outer SHIELD. It indeed does act as a shield. To demonstrate, take a simple two wire cable without a shield such as that intended for a speaker and hook it up as an interconnect and see what you get...lots of AC hum and buzz.
The ground of the power supply on my monitor is isolated from the computer, there is no physical connection. Quoting: IDW 316817
Wrong again. Trace back the wiring in the cable and get back with us. |
| Anonymous Coward
User ID: 98001
10/24/2007 4:06 PM | | Re: APOLLO MOON LANDINGS ------- FAKED OR REAL !!?? | Quote |
I challenge you to be honest, and edit your list to only things I have actually said, exactly the way I stated them without careful manipulation. Nothing I have said on the last two pages in error. If it is , point out SPECIFICALLY how, and why.
How about this:
"THE MOTHERBOARD OF A COMPUTER IS NOT GROUNDED, AND ANY ATTEMPT TO DO SO WILL INSTANTLY DESTROY IT IF THE POWER SUPPLY IS CONNECTED. I HAD THOUGHT THIS SUBJECT HAD BEEN SETTLED, BUT BEING THE IDIOT YOU ARE YOU CANNOT SEE THE FUTILITY IN YOUR EFFORTS."
Do you still stand by that little tidbit of misinformation?
YES. WITHEN THE CONTEXT OF THE DEISCUSSION.
He was refering to an earth ground, stating plainly and falsly that the negative of the cmos batter was earth grounded.
He was confusing earth ground with chassis return path,and had the "common return path" connected to earth ground! he ALSO had the polarity ass backwards. Quoting: IDW 316817
Nope...again all you have to do to check it is a simple ohmmeter check. Even take it all the way to the erth ground rod outside your house. I dare you. |
| IDW
User ID: 316817
10/24/2007 4:06 PM | | Re: APOLLO MOON LANDINGS ------- FAKED OR REAL !!?? | Quote |
solid state amplifiers work on an entirely different principle and do not require impedance matching at their outputs. Quoting: moron electrician
Oh really? LMAO! NO wonder you dont want to give your real name. I have so many stupid comments like this I would like to give them proper billing!
Connect 4 ohm speakers to an output rated for 8 ohm speakers and crank it up. Resistance is halved and finals will fry in matter of minutes. Impeadance matching is imperitive to the longevity of the final output transitors. |
| nomuse
User ID: 316856
10/24/2007 4:12 PM | | Re: APOLLO MOON LANDINGS ------- FAKED OR REAL !!?? | Quote |
The color coding on the terminals is for PHASING only, and DO NOT indicate negative or positive. Quoting: IDW 316817
Speakers DO have polarity. The driver is a small electromagnet that pushes the cone outwards during a positive voltage swing and inwards during a negative voltage swing. Although the driving voltage is AC, if you don't watch the polarity you'll get your speakers out of phase. Quoting: nomuse 316856
Your answer was both incomplete and misleading. In the industry, what we are describing is speaker POLARITY and it is indicated, often with a red terminal, but also with a red dot, a plus sign, or other marking on the positive terminal.
As additional clarification, let me quote from the Yamaha handbook; "Once again, the term polarity is the correct term when discussing the reversal of loudspeaker wires. Phase is often misused here. When one loudspeaker's polarity is reversed (the + and - wires swapped) relative to another, the effect is similar to being 180' out of phase. Phase is frequency dependent, polarity is not. Still, many people continue to use the term out of phase when they really mean reversed in polarity. The misinformed practice may continue, but make sure YOU know the difference."
Well, fie on Yamaha, I've said "out of phase" before and I'll probably say it again. But I understand the problem and the solution as getting the polarity right.
Incidentally, the cancellation is at all frequencies when a speaker is out of polarity. It isn't a frequency-dependent effect -- no comb filtering or bass attenuation appears. Bass does come of interest, however, in tightly clustered speakers, where a out of polarity woofer can literally rip itself apart. |
| Anonymous Coward
User ID: 262563
10/24/2007 4:12 PM | | Re: APOLLO MOON LANDINGS ------- FAKED OR REAL !!?? | Quote |
YES. WITHEN THE CONTEXT OF THE DEISCUSSION.
He was refering to an earth ground, stating plainly and falsly that the negative of the cmos batter was earth grounded.
He was confusing earth ground with chassis return path,and had the "common return path" connected to earth ground! he ALSO had the polarity ass backwards. Quoting: IDW 316817
ROFL!!!
So the ground really ISN'T grounded with the ground!!!!
Boats aren't grounded because they aren't EARTH grouded! HHAHAHAHAHAHA!!
How is a CAR grounded, then? It's on four rubber tires! Is it grounded or not?
You can't mean to tell me that IDW is making up terms AGAIN, can you?!?!?
Perish the thought! IDW certainly has! |
| IDW
User ID: 316817
10/24/2007 4:13 PM | | Re: APOLLO MOON LANDINGS ------- FAKED OR REAL !!?? | Quote |
Ever heard of a Faraday shield? Look it up. You really don't know much about these things, do you? Quoting: Anonymous Coward 98001
What a marron. I have decsribed in detail my own, which is earth grounded on a seperate and more efficient ground than my home. Connecting a shielded audio cable to household ground will induce a noise signal into the audio.
.
Wrong again. You're talking about a balanced audio cable which has two conductors and a shield. And unbalanced audio cable, like the ones typically used in consumer audio applications, have a center conductor and an outer SHIELD. It indeed does act as a shield. Quoting: FUCKTARD
To demonstrate, take a simple two wire cable without a shield such as that intended for a speaker and hook it up as an interconnect and see what you get...lots of AC hum and buzz. Quoting: DUMBASS
That is in fact what I have, and there is no such buzz even when the volume is cranked to the max on the stero and nothing is playing. In fact, I used an EXTENSION CORD to bridge the gap between computer and stereo. With a sensitive input such as a guitar amp, this is true, but the sensitivity of an auxilary input is not high enough to crate this problem. |
| Anonymous Coward
User ID: 98001
10/24/2007 4:16 PM | | Re: APOLLO MOON LANDINGS ------- FAKED OR REAL !!?? | Quote |
solid state amplifiers work on an entirely different principle and do not require impedance matching at their outputs.
Oh really? LMAO! NO wonder you dont want to give your real name. I have so many stupid comments like this I would like to give them proper billing!
Connect 4 ohm speakers to an output rated for 8 ohm speakers and crank it up. Resistance is halved and finals will fry in matter of minutes. Impeadance matching is imperitive to the longevity of the final output transitors. Quoting: IDW 316817
Wrong again...keep it up, IDW.
Here are a few references for you to get educated...
Here's a high end audio amp with an output impedance of 0.01 ohm
[link to www.hometheaterhifi.com]
From
[link to en.wikipedia.org]
"Modern solid state audio amplifiers do not use matched impedances, contrary to myth. The driver amplifier has a low output impedance such as < 0.1 ohm and the loudspeaker usually has an input impedance of 4, 8, or 16 ohms; many times larger. This type of connection is impedance bridging, and provides better damping of the loudspeaker cone to minimize distortion."
"The myth comes from tube audio amplifiers, which required impedance matching for proper, reliable operation. Most of these had output transformer taps to approximately match the amplifier output to typical loudspeaker impedances."
From
[link to www.soundstage.com]
"most solid-state amps have an output impedance of 0.0001 ohms"
IDW, care to tell me what type of speaker has an impedance anywhere near that value? |
| nomuse
User ID: 316856
10/24/2007 4:16 PM | | Re: APOLLO MOON LANDINGS ------- FAKED OR REAL !!?? | Quote |
YES. WITHEN THE CONTEXT OF THE DEISCUSSION.
He was refering to an earth ground, stating plainly and falsly that the negative of the cmos batter was earth grounded.
He was confusing earth ground with chassis return path,and had the "common return path" connected to earth ground! he ALSO had the polarity ass backwards. Quoting: IDW 316817
Negative terminal of the back-up battery was connected to chassis ground, and chassis ground was connected to the ground lug of the power cord, on both pieces of equipment I checked. I took a photograph of the second test and provided the link to that image.
By the by, have you looked up the different symbology for electronic ground (aka signal ground), chassis ground, and earth ground, yet? Do you yet understand when, and more importantly where, they are interconnected? |
| IDW
User ID: 316817
10/24/2007 4:17 PM | | Re: APOLLO MOON LANDINGS ------- FAKED OR REAL !!?? | Quote |
YES. WITHEN THE CONTEXT OF THE DEISCUSSION.
He was refering to an earth ground, stating plainly and falsly that the negative of the cmos batter was earth grounded.
He was confusing earth ground with chassis return path,and had the "common return path" connected to earth ground! he ALSO had the polarity ass backwards.
ROFL!!!
So the ground really ISN'T grounded with the ground!!!!
Boats aren't grounded because they aren't EARTH grouded! HHAHAHAHAHAHA!!
How is a CAR grounded, then? It's on four rubber tires! Is it grounded or not?
You can't mean to tell me that IDW is making up terms AGAIN, can you?!?!?
Perish the thought! IDW certainly has! Quoting: Anonymous Coward 262563
You dont understand this stuff, its obvious. STay out of it for your own good. |
| IDW
User ID: 316817
10/24/2007 4:21 PM | | Re: APOLLO MOON LANDINGS ------- FAKED OR REAL !!?? | Quote |
Wrong again...keep it up, IDW.
Here are a few references for you to get educated...
Here's a high end audio amp with an output impedance of 0.01 ohm
[ link to www.hometheaterhifi.com]
From
[ link to en.wikipedia.org]
"Modern solid state audio amplifiers do not use matched impedances, contrary to myth. The driver amplifier has a low output impedance such as < 0.1 ohm and the loudspeaker usually has an input impedance of 4, 8, or 16 ohms; many times larger. This type of connection is impedance bridging, and provides better damping of the loudspeaker cone to minimize distortion."
"The myth comes from tube audio amplifiers, which required impedance matching for proper, reliable operation. Most of these had output transformer taps to approximately match the amplifier output to typical loudspeaker impedances."
From
[ link to www.soundstage.com]
"most solid-state amps have an output impedance of 0.0001 ohms"
IDW, care to tell me what type of speaker has an impedance anywhere near that value?
That is the impeadance between output terminals. A speaker of a rated impeadance matching the manufacturers specification must be connected. The speakers impedance regulates output. Too low an impedance will fry the finals. I learned that when I was ten. |
| Anonymous Coward
User ID: 98001
10/24/2007 4:24 PM | | Re: APOLLO MOON LANDINGS ------- FAKED OR REAL !!?? | Quote |
Ever heard of a Faraday shield? Look it up. You really don't know much about these things, do you?
What a marron. I have decsribed in detail my own, which is earth grounded on a seperate and more efficient ground than my home. Connecting a shielded audio cable to household ground will induce a noise signal into the audio.
.
Wrong again. You're talking about a balanced audio cable which has two conductors and a shield. And unbalanced audio cable, like the ones typically used in consumer audio applications, have a center conductor and an outer SHIELD. It indeed does act as a shield.
No, it doesnt, it carries the audio signal.
To demonstrate, take a simple two wire cable without a shield such as that intended for a speaker and hook it up as an interconnect and see what you get...lots of AC hum and buzz.
That is in fact what I have, and there is no such buzz even when the volume is cranked to the max on the stero and nothing is playing. In fact, I used an EXTENSION CORD to bridge the gap between computer and stereo. With a sensitive input such as a guitar amp, this is true, but the sensitivity of an auxilary input is not high enough to crate this problem. Quoting: IDW 316817
So, if the shield is not required, why do all low-level audio cables have them? And yes, one side of the audio is indeed carried on them, but they are also connected electrically to the chassis of the equipment and ultimately to ground through the power cord.
It does not have anything to do with sensitivity, but the impedance of the system. EM Interference is inherently high impedance...that is, it can only induce significant signals in circuits with a high impedance. Low impedance circuits, such as speaker systems, can use unshielded cables, but high-impedance circuits such as interconnects, guitar amp inputs, etc. require shielding to keep environmental EM fields such as that from household 60 Hz current radiating from the power wiring from inducing hum in the audio. The shield is connected to the chassis and ultimately to ground due to the Faraday effect. |
| IDW
User ID: 316817
10/24/2007 4:24 PM | | Re: APOLLO MOON LANDINGS ------- FAKED OR REAL !!?? | Quote |
On every amplifier I have ever purchased the specifications specifically stated the danger of connecting lower than rated impeadance speakers. Lower resistance means higher wattage.
I have also fried finals myslef thinking I could get away with a lower SPEAKER impeadance to get a higher output, the speaker is the LOAD. |
| Anonymous Coward
User ID: 98001
10/24/2007 4:26 PM | | Re: APOLLO MOON LANDINGS ------- FAKED OR REAL !!?? | Quote |
Wrong again...keep it up, IDW.
Here are a few references for you to get educated...
Here's a high end audio amp with an output impedance of 0.01 ohm
[ link to www.hometheaterhifi.com]
From
[ link to en.wikipedia.org]
"Modern solid state audio amplifiers do not use matched impedances, contrary to myth. The driver amplifier has a low output impedance such as < 0.1 ohm and the loudspeaker usually has an input impedance of 4, 8, or 16 ohms; many times larger. This type of connection is impedance bridging, and provides better damping of the loudspeaker cone to minimize distortion."
"The myth comes from tube audio amplifiers, which required impedance matching for proper, reliable operation. Most of these had output transformer taps to approximately match the amplifier output to typical loudspeaker impedances."
From
[ link to www.soundstage.com]
"most solid-state amps have an output impedance of 0.0001 ohms"
IDW, care to tell me what type of speaker has an impedance anywhere near that value?
That is the impeadance between output terminals. A speaker of a rated impeadance matching the manufacturers specification must be connected. The speakers impedance regulates output. Too low an impedance will fry the finals. I learned that when I was ten.
Frying finals and impedance matching is two entirely different subjects. You obviously have no understanding of this concept. |
| Anonymous Coward
User ID: 98001
10/24/2007 4:28 PM | | Re: APOLLO MOON LANDINGS ------- FAKED OR REAL !!?? | Quote |
On every amplifier I have ever purchased the specifications specifically stated the danger of connecting lower than rated impeadance speakers. Lower resistance means higher wattage. Quoting: IDW 316817
Yes, agreed...but ONLY because below a certain impedance, the power supply overloads because it can no longer supply enough current. This has NOTHING to do with impedance matching. How do you match a 4 ohm speaker to a 0.1 ohm amplifier output? |
| Anonymous Coward
User ID: 98001
10/24/2007 4:30 PM | | IDW
User ID: 316817
10/24/2007 4:32 PM | | Re: APOLLO MOON LANDINGS ------- FAKED OR REAL !!?? | Quote |
So, if the shield is not required, why do all low-level audio cables have them? Quoting: Anonymous Coward 98001
It always assumed it gives added durability to the cable. If you had just two tiny conductors the cables would be damaged easily. It is impossible for this to act as a shield, because neither terminal of the output is connected to an actual ground.
And yes, one side of the audio is indeed carried on them, but they are also connected electrically to the chassis of the equipment and ultimately to ground through the power cord. Quoting: REAL FUCKING DENSE DUMBASS
But the power cord doesnt have a ground prong, nither on my Pioneer or my Aiwa
It does not have anything to do with sensitivity, but the impedance of the system. EM Interference is inherently high impedance...that is, it can only induce significant signals in circuits with a high impedance. Low impedance circuits, such as speaker systems, can use unshielded cables, but high-impedance circuits such as interconnects, guitar amp inputs, etc. require shielding to keep environmental EM fields such as that from household 60 Hz current radiating from the power wiring from inducing hum in the audio. The shield is connected to the chassis and ultimately to ground due to the Faraday effect.
What a fucktard! The phone jack output of a computer sound card IS a speaker output. |
| IDW
User ID: 316817
10/24/2007 4:35 PM | | Re: APOLLO MOON LANDINGS ------- FAKED OR REAL !!?? | Quote |
Frying finals and impedance matching is two entirely different subjects. You obviously have no understanding of this concept. Quoting: Anonymous Coward 98001
No sir, it is you who is quite obivously lacking. Lower than rated speaker impeadance will fry the final transistors. The power supply is generally undamaged. I know this through personal experience. |
| Anonymous Coward
User ID: 98001
10/24/2007 4:36 PM | | Anonymous Coward
User ID: 98001
10/24/2007 4:37 PM | | Re: APOLLO MOON LANDINGS ------- FAKED OR REAL !!?? | Quote |
Frying finals and impedance matching is two entirely different subjects. You obviously have no understanding of this concept.
No sir, it is you who is quite obivously lacking. Lower than rated speaker impeadance will fry the final transistors. The power supply is generally undamaged. I know this through personal experience. Quoting: IDW 316817
Do you even know what impedance matching is? This is what you were whining about in your original post on the subject, but you apparently don't have a clue. |
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