DENON PMA-930V
¥ 54,800 (around 1985)
Commentary
A pre-main amplifier with a non-feedback power amplifier.
The power amplifier section is a non-feedback 0 db amplifier in which the voltage amplifier stage and the power amplifier stage are completely electrically separated to reduce dynamic distortion such as TIM distortion and all kinds of distortion. Moreover, the effect of the back electromotive force from the speaker on the predriver stage is suppressed.
In addition, Pc100W power transistor is adopted to obtain high power.
A multi-shielded power transformer and -shielded power transformer and a 16,400 μ F block capacitor.
By using a super equalizer in the equalizer amplifier section, a wide bandwidth is achieved.
In addition, the MC/MM is switched by the in-flight remote control to prevent deterioration of the SN ratio due to wiring.
It is equipped with wide-band real-time tone control with limited quality degradation and subsonic filter.
Equipped with high-speed protection circuit.
Model Rating
Type | Pre-main amplifier |
<Power Amplifier Unit (Tuner → SP out)> | |
Rated output | 80W + 80W (6 Ω) 70W + 70W (8 Ω) |
Input Sensitivity / Impedance | 150mV/30k Ω |
Total harmonic distortion factor | Not more than 0.007% |
Cross modulation distortion factor | Not more than 0.003% |
TIM distortion factor | Measurement limit value or less |
Slew rate | ± 150 V / μ sec or more |
Output bandwidth (both channel drive) | 5 Hz ~ 80 kHz (THD 0.1%) |
Frequency response (at 1W output) | 4 Hz ~ 250 kHz + 0 -3dB |
Output Impedance (1 kHz) | 0.1 Ω |
Output terminal | Speaker AORb : 6 Ω ~ 16 Ω Speaker A + B : 12 Ω ~ 16 Ω Headphone Jack : 230mW/8 Ω |
Preamplifier Section | |
Input Sensitivity / Impedance | Phono MM : 2.5mV/47k Ω Phono MC : 0.2mV/100 Ω CD, Tuner, Video, Tape : 150mV/30k Ω |
Maximum Output / Rated Output | 10V/150mV |
Total harmonic distortion factor | 0.001% or Less (1 kHz, 8 V) |
RIAA deviation | 20 Hz ~ 100 kHz ± 0.3 dB (MC) |
<General> | |
SN ratio (input ratio (input short circuit, weight A) | Phono MM : 86 dB (at 2.5 mV input) Phono MC : 70 dB (at 0.25 mV input) CD, Tuner, Video, Tape : 106 dB at 150 mV input |
Tone control | Bass : ± 10 dB (100 Hz) Treble : ± 10 dB (10 kHz) |
Subsonic filter | 18 Hz, 6dB/oct. |
Loudness control characteristic | Low frequency : + 7 dB (100 Hz) High frequency : + 6 dB (10 kHz) |
Pwer | 100 VAC, 50Hz/60Hz |
Power consumption | 150W |
External Dimensions (including legs, knobs, terminals) | Width 434x Height 112x Depth 393 mm |
Weight | 9.3kg |