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Old 7th November 2005, 11:28 AM   #1
leander is offline leander  Malta
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Default Should grounds go like this?

Could you please confirm that grounds should be connected like this as shown...

Thanks

regards
Leander
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Old 7th November 2005, 11:50 AM   #2
Did it Himself
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Yes that should be good. Remember the speaker ground returns to the star point as well, not the PCB. Signal input leads to the PCB should be insulated from the chassis.
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Old 7th November 2005, 12:26 PM   #3
bocka is offline bocka  Germany
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Hi,

its better to connect the GND from C12 directly to C13. You can also omit R23 and C10.
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Old 7th November 2005, 12:33 PM   #4
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Ground from snubber ( Boucherot ) you must lead separately, not by common wire with filtration...
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Old 7th November 2005, 02:28 PM   #5
MikeB is offline MikeB  Germany
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Quote:
Originally posted by bocka
Hi,
its better to connect the GND from C12 directly to C13. You can also omit R23 and C10.
Yep, i can confirm that !

Mike
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Old 7th November 2005, 06:06 PM   #6
MikeB is offline MikeB  Germany
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Quote:
Originally posted by MikeB
Yep, i can confirm that ! Mike
I only meant c12/c13, r23 can be necessary but if it is, it should not be bypassed with c10.
And if r23 is used, this signal gnd should not be further connected to the power gnd.

Mike
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Old 7th November 2005, 07:39 PM   #7
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Hi Leander

With only two diode drops ( D2 an D3 ) you will have severe crossover distortion. You must add one or two more diodes and a trimmer pot for adjustment .
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Old 7th November 2005, 07:49 PM   #8
MikeB is offline MikeB  Germany
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Jorge, that's a CFP outputstage, it does not that high voltage to have bias ! With 4 diodes it will fry. But you're right, it's ClassB, and rod designed that thing for subwoofer.

Mike
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Old 15th November 2005, 07:56 AM   #9
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Good Day,

Is it fine to connect the entire circuit common(star point ground) to earth ground of the power cable?
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Old 15th November 2005, 08:38 AM   #10
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Yes and that would be a good idea for safety.
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