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Correct R values for input impedance - Question about setting my input impedance to match preamp
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tonentimbre  
#1 Posted : Thursday, January 10, 2013 3:12:10 PM(UTC)
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I am going to be using an MSB MVC preamp to feed a Venus headphone amp, the MVC has an output impedance of 50ohms. What are my recommended R values for best impedance matching on the Ventus boards? I am going to be using it in a single ended, unity gain, and non-inverting application.

Also, I will be driving Sennheiser HD-650 headphones if anyone has any component suggestions in the output stage as well.

Thanks in advance!

-j.

Edited by user Thursday, January 10, 2013 7:32:03 PM(UTC)  | Reason: Not specified
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tonentimbre  
#2 Posted : Friday, January 18, 2013 4:00:08 PM(UTC)
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Alrighty then... off to another forum I go.
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Brian Donegan  
#3 Posted : Friday, January 18, 2013 7:54:45 PM(UTC)
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The standard parts for the Ventus will work fine for this application. No need to change anything.
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thanks 1 user thanked Brian Donegan for this useful post.
tonentimbre on 1/18/2013(UTC)
tonentimbre  
#4 Posted : Friday, January 18, 2013 9:12:39 PM(UTC)
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Thank you, Brian. Is it necessary to use the output inductor when driving HD-650 headphones?
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Russ White  
#5 Posted : Saturday, January 19, 2013 12:06:22 AM(UTC)
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No, not generally, especially if using the stock cables.

the inductor does help when using very capacitive cables.
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