Synchronism fluctuations: 0.07 % (WRMS ), 0.09 % (DIN, rated), 0.18 % (DIN unrated, see Stereo 10/1997, p.54).
Band types: IEC I, II, IV
Frequency response: 20- 19,000 Hz (metal band), 30-18,000 Hz at +/- 3 kHz; 20- 18,000 Hz (chrome), 30-17,000 (chrome, at +/- 3 kHz)
Total harmonic distortion:
Signal-to-noise ratio: 58 dB (metal -Band, Dolby NR off); with Dolby B (at 5 kHz) 68 dB and 63 dB (at 1kHz); with Dolby C 78 dB at 5 Khz; 82 dB with Dolby S (at 5 kHz) and 68 dB with Dolby S (at 1 kHz)
Auto-Reverse: No
Dolby: B, C, S
HX-Pro: Yes
MPX filter : yes (switchable)
Fader: No
Pitch Control: No
CD Synchro Recording: Yes
Repeat playback (Repeat button): Full/Block
Track search (with playback running, no extra buttons), up to 15 tracks searchable
Dolby S noise reduction
4-digit real-time tape counter
Fluorescent display
Single capstan drive
Automatic calibration for bias pre-magnetization (auto Accubias)
Can be operated remotely in the Onkyo RI system (RI system sockets must be connected), then also controlled with some CD remote controls (e.g. RC-278C, RC-279C)
CD Synchro (with Onkyo CD players via System Bus)
Brushed aluminum front
Clearly visible, large display. In light yellow for the silver model, in mint green for the black model
Test in stereo 10/1997: Very good, 2 stars. "In terms of sound, the TA-6511 is in a pleasingly good mood: voices come smoothly and quiet passages with low noise, at least with chrome band." (Stereo 10/1997, p.56)
Test in Audio 7/1998 (last comparative test for cassette decks): upper class, sound 65 points, 3 ears. Very good external voltage clearances are praised. ""airy- structured, detailed sound images ... Attributes such as musically fine, nicely made, modernly equipped and easy to use are just right here. This makes the Onkyo an excellent choice." (Quote Audio 7/98, p.16)
Successor of the TA-6310, very similarly equipped
Onkyo 's second largest model 1996-99 after the TA-6711
Dolby S is displayed as a luminous LED on the front, not in the display
Previous model: Onkyo TA-6510 (equipped with Onkyo TA-6310 )
The display of the silver/aluminum front model is dark yellow, the black device is mint green - analogous to the CD players, MD decks and tuners of the series.