Re: Radio sound quality - some measurements
Panasonic RF-1105 and RF-1630.
For context, a couple of "lesser" sets. These are very basic models with tiny round speakers. But I actually really like these sets. Why? Incredibly FM sensitivity. That's really important to me, given that this is such a poor area around here. For use in the bathroom, or when doing DIY, these are what I pick.
The RF-1105 has a tone control, and no way of knowing which is the "flat" setting. So I simply adjusted it by ear. The RF-1630 has no tone control.
Obviously they are both limited in the bass. Taking the RF-1105 first, after 150Hz it's within +/-3dB all the way to 10kHz. The dip at 2kHz is harmless, but the peak at 6kHz is less welcome. Turning up the tone control brings up the 10KHz+ region quite nicely, but he 6kHz peak comes up with it. A simple notch filter would tame that nicely.
The RF-1630 is even smoother, but severely lacking in bass. It reaches 13.5kHz before falling away. Lovely sets for what they are...
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