audio_tony
Addicted to Fun and Learning
EDIT 29/10: I have resolved my measurement issue and also added a revised THD sweep.
Hopefully this is the correct area to post this.
Following on from the measurements @amirm did of the Yamaha A-1 amplifier, I thought I'd measure my Sony TA-F540E
This amp is rated at 90w x2 into 8 ohms -but I could only get 55w RMS per channel without any significant THD (both channels driven).
75w RMS per channel both channels driven ~ 0.006% THD @ 1kHz
112w RMS one channel driven ~ 0.1% THD @ 1kHz
All tests conducted @ 24/96kHz sampling.
Input voltage from DAC was 1.2v - although in this design, there is no active circuitry prior to the volume control, so input overload can be controlled by the volume control.
If people like this, I also have a JVC AX-5 which I could measure, along with a couple of other amps (if my dummy load can take the pressure!!)
Here are the graphs.
Hopefully this is the correct area to post this.
Following on from the measurements @amirm did of the Yamaha A-1 amplifier, I thought I'd measure my Sony TA-F540E
This amp is rated at 90w x2 into 8 ohms -
75w RMS per channel both channels driven ~ 0.006% THD @ 1kHz
112w RMS one channel driven ~ 0.1% THD @ 1kHz
All tests conducted @ 24/96kHz sampling.
Input voltage from DAC was 1.2v - although in this design, there is no active circuitry prior to the volume control, so input overload can be controlled by the volume control.
If people like this, I also have a JVC AX-5 which I could measure, along with a couple of other amps (if my dummy load can take the pressure!!)
Here are the graphs.
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