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Class D Switching Power Amplifiers and Power D/A conversion

Anaview: can you tie speaker ground?
Anaview: can you tie speaker ground?
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Old 22nd February 2019, 02:42 PM   #1
mudihan is offline mudihan  United States
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Default Anaview: can you tie speaker ground?

Question is whether I can tie the negative speaker outs of two Anaview modules (AMS0100-2300) together? In my specific set up, my stereo speakers will have to share a common ground due to how the wires are run behind the walls. I know some Class D amps cannot share one common ground, but I am not sure if Anaview is one of those types. Thanks!
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Old 22nd February 2019, 02:54 PM   #2
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http://www.anaview.com/sites/default...0AMS0100-I.pdf

Page 5 contains your answer.
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Old 22nd February 2019, 03:04 PM   #3
mudihan is offline mudihan  United States
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Thanks, and got it. If I were to feed singled-ended signal to the amps and therefore tie the negative inputs to input ground, I assume this would not affect the feasibility of connecting the negative speaker outputs to the same ground?
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Old 22nd February 2019, 03:29 PM   #4
Khron is offline Khron  Finland
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Not at all. Which input you feed the audio signal into, doesn't change where that particular output pin is soldered, only the polarity of the output signal.
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Old 22nd February 2019, 03:49 PM   #5
mudihan is offline mudihan  United States
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Not at all. Which input you feed the audio signal into, doesn't change where that particular output pin is soldered, only the polarity of the output signal.
Thanks. Good to know -- this aspect of Anaview makes things much easier to wire. Now I may even use the amps to drive those hard-to-drive headphones, if the noise and DC offset are low enough.
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Old 22nd February 2019, 06:24 PM   #6
jan.didden is offline jan.didden  Europe
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Doesn't it also depend on how you use them? If you use them in BTL (one module of 2 amps per load) you can't connect any output to ground.

Jan
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Old 22nd February 2019, 06:30 PM   #7
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... Nor would you need to

Quote:
Originally Posted by jan.didden View Post
Doesn't it also depend on how you use them? If you use them in BTL (one module of 2 amps per load) you can't connect any output to ground.

Jan
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Old 24th February 2019, 06:20 AM   #8
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The amp should shut down if you do, as this is a serious fault condition (short to ground).
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