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Old 9th May 2007, 05:53 AM   #1
Mrpong is offline Mrpong  Thailand
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Default Basic questions about 256 steps attenuator

Hi, I just want to clarify the concept of the 256 steps attenuator used in the ALEPH P1.7 preamp.

- Is it the shunt type?
- Comparing to other generic potentiometers like ALPS or NOBLE, it looks like this 256 steps attenuator has lower input resistance. Is it true that its lower input resistance may cause some load problem for CD players or D/A if we put it in front of the preamp section?

Thank you.
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Old 9th May 2007, 06:23 PM   #2
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It is a shunt type. We put it at the output of the preamp,
whose active circuit is a current source.

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Old 9th May 2007, 06:46 PM   #3
Fox is offline Fox  Netherlands
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Default Excuse me ...

Quote:
It is a shunt type
Nelson,

Pardon your French?

If I'm not wrong I the attenuator in the Aleph P 1.7 is a ladder type instead of a shunt type. I have read this in the Pass service manual.

Regards,

JP

Who is enjoying his Aleph 5, Aleph P and Pearl Phono immensely
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