VAC Renaissance 140 - Manual (Page 13)

9
SPECIFICATIONS
The VAC Renaissance One-Forty has been developed with the critical ear as the major arbiter of quality, with
both conventional and unique measurements providing insight and guidance as necessary. The lack of emphasis
on measurements is due to the fact that engineering's arsenal of equipment and techniques do not operate on
the pattern recognition principals that control human perception of sound.
In the immortal words of Daniel von Recklinghausen, if it measures good and sounds bad, it is bad. If it
measures bad and sounds good, you've measured the wrong things.
For those concerned with test bench performance, the following describes typical measured performance when
operated with no feedback (0 dB) at 120 VAC, 60 Hz.
Power Output: 120 watts continuous average power at 1 kHz with less than 2% THD into 8 ohms
connected to the 8 ohm tap.
Frequency Response: down 0.5 dB at 7 Hz and 30 kHz, ref 0 dB = 1 watt @ 1 kHz.
down 3.0 dB at 3.5 Hz and 115 kHz, ref 0 dB = 1 watt @ 1 kHz.
Negative Feedback: Selectable: 0, 2, 3, 4, 5, 6 dB.
Absolute Polarity: Does not invert absolute phase.
FOOTNOTES:
1. Tube Manufacturing at Western Electric: The WE 300, Attila R. Balaton. Journal of the Audio
Engineering Society, Vol.37, No.11, November 1989, pages 949-958.
2. The Low-Loading Self-Biased Amplifier, L.B.Dalzell. Audio, December 1959, pages 19-21.
3. The Fixed-Bias Story (Is Fixed Bias Really Better?), Herbert Ravenswood. Radio-Electronics, February
1958, pages 47-49.
4. Philips Hi Fi Amplifier Circuits. Published in Holland, 1958.
5. WE 300B. MJ Audio Technology, 1992/5, pages 213-215.