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Old 24th December 2010, 06:16 AM   #1
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Default CDP Output Impedance?

Does anybody know the output impedance of the Marantz CD6002 ?

I am building a B1 and noticed Nelson mentioned that the POT sets the impedance at the input, so before I buy a pot I figured I should get one with the same impedance (if possible) as the CDP impedance.

Im not even sure If this is the best practice but thought I would ask. I cant find any info in the CDP Users Manual, and I cant find a copy of a service manual yet.

Im buying an ALPS pot (possibly Blue Velvet) in AUS if anybody has advice on that also?

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Dean
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Old 24th December 2010, 07:09 AM   #2
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10k or 20k would be pretty safe betting, and in fact its not particularly critical.
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Old 24th December 2010, 08:56 AM   #3
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Cheers Aard.

I guess I'll run with that unless I hear otherwise...
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Old 24th December 2010, 09:23 AM   #4
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Hi,
the output impedance of a CDP is likely to be between 100r and 1600r.
It will certainly not be 10k.

The load impedance for a CDP is likely to be >=10k
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Old 24th December 2010, 09:54 PM   #5
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As Andrew wrote the output impedance of most CD players is 100 Ohms more or less. These CD players expect to see a load of 10k Ohms or more.
Note that a 10k pot in some circuits can present a total load of less the 10k Ohms.
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Old 24th December 2010, 11:26 PM   #6
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yeah sorry - I meant the value for the input pot...
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Old 25th December 2010, 04:56 AM   #7
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Ok, so as nelson said, about 25k pot will be fine.

Is it worth spending my hard earned $40 AU on a blue velvet or spend the money on some sort of light speed, can anybody recommend I kit?

Dean
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