Gloria in Excelsis (common base VAS) - diyAudio
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Old 28th January 2013, 04:12 PM   #1
Stee is offline Stee  Italy
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Default Gloria in Excelsis (common base VAS)

the problem with low feedback amplifier is the current circulation of IPS
to enhance this flow is sufficient to convert the VAS with common base

Now you can dramatically reduce the negative feedback
and have a thicker sound and airy at the same time
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File Type: png STANDARD DESIGN.PNG (20.5 KB, 111 views)
File Type: png COMMON BASE VAS.PNG (21.5 KB, 106 views)
File Type: png CALIDARIVM AMPLIFIER.PNG (33.8 KB, 105 views)
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Old 28th January 2013, 05:20 PM   #2
chicks is offline chicks  United States
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Thicker sound and airy... What does that even mean?
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Old 28th January 2013, 09:54 PM   #3
Stee is offline Stee  Italy
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Default 10 mA into each stage

I think that increasing the current that circulates in the IPS can increase the bass reproduction

consequently it is possible to reduce the negative feedback and thus obtain greater expansion of the high tones

the common base solution allows you to adjust the (same) operating point independently
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File Type: png COMMON BASE VAS.PNG (37.5 KB, 65 views)
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