Joule Electra LA-100 Phase Inversion
stretchl
Posts: 1,334
Can someone please explain to me the functional result of the LA 100s phase inversion described below? It doesn’t reverse the left and right channels, does it?
I ask because I just discovered, strangely, that my left and right channels are indeed reversed. It’s probably the speaker cables that are crossed in the crawlspace under the listening room, but as that’s not easily accessible I can’t really check.
Thanks.
I ask because I just discovered, strangely, that my left and right channels are indeed reversed. It’s probably the speaker cables that are crossed in the crawlspace under the listening room, but as that’s not easily accessible I can’t really check.
Thanks.
“Anti-intellectualism has been a constant thread winding its way through our political and cultural life, nurtured by the false notion that democracy means that 'my ignorance is just as good as your knowledge.'”
- Isaac Asimov
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Apple Lossless --> Squeezebox Touch --> Joule Electra LA-100 Mark iii --> Odyssey Khartargo Mono Plus --> LSiM-705's
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https://media.illinois.edu/journalism/ledford-charles-stretch
bit.ly/stretchonphotojournalism
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- Isaac Asimov
Hi-Fi
Apple Lossless --> Squeezebox Touch --> Joule Electra LA-100 Mark iii --> Odyssey Khartargo Mono Plus --> LSiM-705's
Cabling by Groneberg
Visuals
https://media.illinois.edu/journalism/ledford-charles-stretch
bit.ly/stretchonphotojournalism
http://Vimeo.com/channels/stretchphoto
Comments
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It changes what’s positive and negative not the actual L or R.Klipsch The Nines, Audioquest Thunderbird Interconnect, Innuos Zen MK3 W4S recovery, Revolution Audio Labs USB & Ethernet, Border Patrol SE-I, Audioquest Niagara 5000 & Thunder, Cullen Crossover II PC's.
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The reason your speakers are reversed is explained in the very 1st sentence by the term "is phase inverting". You can do as described in the following sentences if the pre-amps doesn't include a "phase" switch on the pre.
Do a Google search for more info as camps are divided about this issue.
H9"Appreciation of audio is a completely subjective human experience. Measurements can provide a measure of insight, but are no substitute for human judgment. Why are we looking to reduce a subjective experience to objective criteria anyway? The subtleties of music and audio reproduction are for those who appreciate it. Differentiation by numbers is for those who do not".--Nelson Pass Pass Labs XA25 | EE Avant Pre | EE Mini Max Supreme DAC | MIT Shotgun S1 | Pangea AC14SE MKII | Legend L600 | BlueSound Node 3 - Tubes add soul! -
Also recording engineer's use phase inversion as a production technique. So even if your system is in absolute phase for one recording, it may not be for another. It's a sticky subject that can be debated on both sides.
This link might help. It's about mixing audio, but the principles of audio phase are the same.
https://www.uaudio.com/blog/understanding-audio-phase/"Appreciation of audio is a completely subjective human experience. Measurements can provide a measure of insight, but are no substitute for human judgment. Why are we looking to reduce a subjective experience to objective criteria anyway? The subtleties of music and audio reproduction are for those who appreciate it. Differentiation by numbers is for those who do not".--Nelson Pass Pass Labs XA25 | EE Avant Pre | EE Mini Max Supreme DAC | MIT Shotgun S1 | Pangea AC14SE MKII | Legend L600 | BlueSound Node 3 - Tubes add soul! -
It changes what’s positive and negative not the actual L or R.
Thanks. I think this answers my question. I just need to switch the right and left cable to get things back in their proper order.
Thanks also to @heiney9.“Anti-intellectualism has been a constant thread winding its way through our political and cultural life, nurtured by the false notion that democracy means that 'my ignorance is just as good as your knowledge.'”
- Isaac Asimov
Hi-Fi
Apple Lossless --> Squeezebox Touch --> Joule Electra LA-100 Mark iii --> Odyssey Khartargo Mono Plus --> LSiM-705's
Cabling by Groneberg
Visuals
https://media.illinois.edu/journalism/ledford-charles-stretch
bit.ly/stretchonphotojournalism
http://Vimeo.com/channels/stretchphoto -
It's not switching left and right "channels"...
It's reversing the phase of the + and - on the input/output of each channel.
I ran into this with my Rogue 66 pre amp. A suggestion is to switch the polarity at the speakers. I have done it either way and noticed no discernable difference in sound quality.
Hope this clears that up.... -
The reason your speakers are reversed is explained in the very 1st sentence by the term "is phase inverting".
^ That is incorrect ^
Russ nailed it........It's not switching left and right "channels"...
It's reversing the phase of the + and - on the input/output of each channel.Political Correctness'.........defined
"A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a t-u-r-d by the clean end."
President of Club Polk -
I didn't say "channels" it's the positive and negative on ONE channel being reversed. And yes what I copied from the onwer's manual is correct. If it inverts phase and your amp doesn't invert phase then the signal is out of phase."Appreciation of audio is a completely subjective human experience. Measurements can provide a measure of insight, but are no substitute for human judgment. Why are we looking to reduce a subjective experience to objective criteria anyway? The subtleties of music and audio reproduction are for those who appreciate it. Differentiation by numbers is for those who do not".--Nelson Pass Pass Labs XA25 | EE Avant Pre | EE Mini Max Supreme DAC | MIT Shotgun S1 | Pangea AC14SE MKII | Legend L600 | BlueSound Node 3 - Tubes add soul!
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I see what you were trying to say now Brock. It came off like you were saying the reason his left channel is playing in his right and vice versa was due to the inverted phase.Political Correctness'.........defined
"A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a t-u-r-d by the clean end."
President of Club Polk -
Settle down and know your role, Brock....
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Shut up Russ.
Tom~ In search of accurate reproduction of music. Real sound is my reference and while perfection may not be attainable? If I chase it, I might just catch excellence. ~ -
Give the +/- switch a try. Helped in my case. Not huge, but definitely discernible.b]Beach Audio[/b]: Rega RP6 (mods) - AT33PTG/II - Parks Budgie SUT - PSAudio NPC * Eversolo DMP-A6 * Topping D90iii * Joule-Electra LA-100 mkIII * Pass Aleph 30 * MIT S3 * Polk SRS 2.3tl (mods) * PSAudio PPP3
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I reverse the speaker connections on the amp side. Without this my sound was very spatial yet had n "weight" and "something" was missing.
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Hows that Joule burning in Kerry ?
You haven't bought anything in like a week, getting that itch ?
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