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Obad Imports Forum>
Last word on TA-10 1.1 signal polarity?
Newk_Yuler
2 post s
20-Jun-2007
3:04 PM
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Was it confirmed the Trends TA-10 1.1 amps have the signal polarity reversed? I want to be sure I have them connected properly. Thanks and love always, Newkie
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Sasha
Site Admin
5 post s
20-Jun-2007
8:57 PM
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Hey Newkie, Yes. It is confirmed that the TA-10.1 is in reverse phase... - Sasha
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akanrg
4 post s
22-Jun-2007
2:37 PM
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So, should I reverse the interconnects or the speaker connection?
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Sasha
Site Admin
6 post s
22-Jun-2007
6:03 PM
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I think you just need to reverse the leads to one speaker (red to black, black to red) and you'll be in phase...
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akanrg
5 post s
23-Jun-2007
4:43 AM
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Just one speaker or both?
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Sasha
Site Admin
8 post s
23-Jun-2007
9:14 AM
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Just one.
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akanrg
7 post s
2-Jul-2007
2:58 PM
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How about the Kingrex T20?
Last Edited on 2-Jul-2007 2:58 PM
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Sasha
Site Admin
12 post s
6-Jul-2007
1:59 PM
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Yes. Same deal with the Kingrex ----------
Sasha Obad
Owner
Obad Imports
www.obadimports.com
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drvolks
1 post
16-Jul-2007
4:11 PM
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I don't think inverting one speaker is the correct solution. Actualy, in my case at least, it worsen the sound. Try a recording with deep bass and compare the difference. If you can, compare the result with another amp. This is from 6moon: To correct those instances and enjoy absolute polarity at the ear as you would during any live acoustic event requires phase inversion somewhere in the playback chain. [...] A last resort is flipping loudspeaker leads on one end but of course for both speakers. http://www.6moons.com/industryfeatures/polarity/polarity.html Now, do we need to invert both speakers on the Trends TA-10, I have no idea. I don't notice a difference...
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akanrg
12 post s
19-Jul-2007
2:40 PM
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I emailed David Kan from 6moons (btw, a real nice guy) re; this issue and here's his response: "Very simple. Just reverse the speaker cables (RED to BLACK) for both channels. Of course you only need to reverse them either at the amp or at the speaker binding posts. My habit is at the amp so that when I change to
another non-inverted amp, I don't have to worry about the speaker connections. But you have to make sure that your speakers and your source
are non-inverted, as some DAC has phase inverting switch. Never, never open up the amp and reverse the soldering of the binding posts - you might reverse the flow of the current and get DC into the circuit, blowing up the
Tripath chip." I hope this helps.
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brett
5 post s
21-Jul-2007
9:38 AM
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I have found that the L and R channel RCA inputs on the
Trends TA-10.1 are reversed. So the logic is that all the connections (RCA and loudspeaker binding posts) have been
reverse identified (red for black,black for red).
The colour coded caps on the loudspeaker binding posts
are easily swapped around.
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EdT
8 post s
1-Aug-2007
9:39 PM
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I wonder why this issue is never brought up by Trends or had the problem fixed ? I heard the inverse phase is very minimal and you need golden ears to hear the difference in the drifting !
Last Edited on 1-Aug-2007 9:40 PM
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MeanWillieGreen
1 post
24-Feb-2008
11:45 AM
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Regarding reverse phase pertaining to the amps, what I believe I read was not that one side was correct as to +/-, but that BOTH channels were wired +/- swapped. That would mean that the typical +=positive, -=negative would be reversed, the red/+ signal at the speaker connect is actually the black/- signal on BOTH left and right. From an audio stand-point, if both speakers are connected in reverse polarity, i.e., + from the amp to - on the speaker and - on the amp to + on the speakers, there should be no tremendous issues. Minimal "smear" as was mentioned, but both speakers would still be "in phase" as relative to one another. The problem one would encounter is leaving ONE speaker hooked up + to - while leaving the OTHER speaker hooked up + to +. That would be true out of phase, i.e., frequency cancellation, and you would get some very weird music. Typically out of phase recordings are going to lose the instruments or vocals that are in the center/mono, while the stereo panned instruments would have some weird equalization. This is coming from a recording engineer of 20+ years, so take that as you will. In my understanding, the +/red speaker connection on the Trends 10.1 and other T amps is actually the - signal coming out of the amp, so if you hook the speakers up according to the diagram, the speakers will be on equal but reversed phases, or very minimal perceived aural issues. To be 100% spot on and properly in-phase, if you are going to swap + for -, do that with both speakers to remain in phase.
Last Edited on 24-Feb-2008 11:47 AM
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tele_player
3 post s
9-Nov-2008
2:55 PM
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From what I've read, the polarity issue is that both channels invert the signal. It's a non-issue, since there's really no right or wrong way. The recording process doesn't have any standard which says polarity of signals needs to be preserved throughout the signal chain. The only time polarity matters in the recording process is when true stereo sources are used, such as live mic'ing with multiple microphones. In that case, they must all be in correct phase to avoid cancellation of correlated source material. There shouldn't be any difference in sound, but if you think you hear a difference, just switch the polarity on both speaker hookups.
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