I finally repair my old Telefunken deck, and did try on their HIGH COM nr system. Veeèery good sound, hiss nowhere. Very satisfied, never before get chance to try it. Satisfied again with German technology
Having tested many NR systems, I can say that TelcomC4, Nakamichi HighCOM II and Toshiba ADRES are the very best ones. Sanyo SUPER D and DBX I and II are also very very good. I prefer to use these , above any Dolby system.
Actually your calibration is wrong. The user manual says "so that the meter of the deck indicates +3dB (VU) or Dolby mark (DD). The 'or' does not express an option. You are to set to +3dB when the deck uses meters with VU scale, i.e. referenced to 160nWb/m. You are to set to 'DD' mark when the deck displays this. You are to set to '0dB' when the deck innately is referenced to Dolby level (218nWb/m) (read the service manual). Nakamichis are referenced to Dolby level. You have to set to 0dB. A much better method still would be to skip the JVC procedure, play a true Dolby level tape (i.e. TEAC MTT-150, ANT L-04, ...) and align the NR-50's input levels.
Indeed, now that you mention it... I was to be set to 0dB on the Nakamichi as that's where the Dolby Level is set to. It won't make that much of a difference anyway, but for the sake of converstaion : indeed, it's 3dB too much. Yes, I have Dolby Alignment tapes, and yes, I know the SM from that CD1 by head... :) You're on tapeheads too, if I'm not mistaken?
