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Thread Tools | Search this Thread |
9th May 2007, 05:53 AM
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#1 |
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diyAudio Member
Join Date: Aug 2004
Location: Bangkok
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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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9th May 2007, 06:23 PM
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#2 |
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The one and only
Join Date: Mar 2001
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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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9th May 2007, 06:46 PM
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#3 | |
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diyAudio Member
Join Date: Dec 2002
Location: The Netherlands
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Excuse me ...
Quote:
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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