I realized the MPX filter is tunable. The notch can be moved above 20kHz by turning the cap anti-clockwise. Now the record frequency response is...
Remember to run the W&F test for at least 10 minutes. Recently, I met a Sony DD33 sample with high flutter, which was very audible in female voice...
I also want to bypass the MPX filter because I don't usually record FM radio and modern FM receivers don't output a strong 19kHz signal. Firstly I...
Hello everyone, This thread covers mods of the WM-D3, for better sound and accurate dB metering. [ATTACH] 1. Capacitors upgrade. I referenced the...
I measured the frequency response of the VU meter, and I found there is a high-pass filter. The meter level drops when frequency is lower than...
I'm a walkman enthusiastic, eager to discuss the restoration experience.
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