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Thought I would start a thread with my questions.
The SD2000 schematic posted shows a bridge tied load configuration and I am wondering how different headphone impedances affect the audio volume and quality.
The op amp specs assume a 600 ohm load min. But since it is bridged, possibly this changes? If you consider just the one leg of 180R and 220R, you have 400 total then add 200 for the phones. Maybe this is the way to look at it. This would not necessarily be the loudest recommended headphone load, but best performance of the op amp.
Any thoughts?
The SD2000 schematic posted shows a bridge tied load configuration and I am wondering how different headphone impedances affect the audio volume and quality.
The op amp specs assume a 600 ohm load min. But since it is bridged, possibly this changes? If you consider just the one leg of 180R and 220R, you have 400 total then add 200 for the phones. Maybe this is the way to look at it. This would not necessarily be the loudest recommended headphone load, but best performance of the op amp.
Any thoughts?