MGard Posted January 22, 2018 Share Posted January 22, 2018 In my GP-400 it seems that, with Berlin and Hamburg pianos (not Wien), in the 5th octave some tones (e.g. F and F#), if played "forte", produce an odd, metallic reverberation, quite distinct from the near ones, like if too many high hypertones were audible . Could you experience something similar? Thank you. Quote Link to comment Share on other sites More sharing options...
Brad Saucier Posted January 22, 2018 Share Posted January 22, 2018 Can you post an audio clip? Quote Link to comment Share on other sites More sharing options...
MGard Posted January 23, 2018 Author Share Posted January 23, 2018 Luckily, after many efforts I think I could individuate the problem. It is the metal grate of the left bottom speaker which, not properly fixed, moves a bit and produces with some particular sounds and tones a sympathetic reverberation made of acute hypertones. Thank you. 1 Quote Link to comment Share on other sites More sharing options...
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