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Salas DCG3 preamp (line & headphone)
Salas DCG3 preamp (line & headphone)
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Old 25th November 2021, 04:36 PM   #5891
Salas is offline Salas  Greece
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Salas DCG3 preamp (line & headphone)
Quote:
Originally Posted by mlackey View Post
All measurements into 33R resistive load. Output (sine) very clean at this frequency.
The 1.6 MHz -3dB frequency response you got is good enough even for AM radio

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Old 25th November 2021, 05:18 PM   #5892
Salas is offline Salas  Greece
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Salas DCG3 preamp (line & headphone)
Interestingly my original simulation plot's indication and your fresh build's F3 response measurement result are close within experimental error. Therefore from prototype and theory to current parts batches and boards, all stick to spec very well after five years. Satisfactory consistency.

*J1,J2=LSK389C Cordell Spice model, signal source Z=50R, output load=33R (parallel to 100pF for 1 meter coax)
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