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RE: RH84 : measurements at 1W ...

1KHz sine input @ 1W power output :

THD = 1.27% THD+N = 1.29%

2nd harmonic = -38.16dB
3rd harmonic = -50.44dB
4th harmonic = -71.41dB
5th harmonic = -76.49dB

Voltage gain : 6.7

B+ off rectifier = 255VDC.

There is a wide variation in PS configurations by various builders.

Bandwidth -3dB was 17Hz and 18052Hz @ 1/4W.

OPT are AES PT-31 SE 25:1

IMO, the biggest improvements will probably be realized by the quality of the OPT used.


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