DENON PMA-500V
¥ 59,800 (around 1986)
Commentary
Pre-main amplifier with video input and AV support.
It uses a unique non-feedback 0 db power amplifier that pursues high-purity and high-speed amplification.
The power stage electrically separates the voltage amplifier stage from the power amplifier stage to eliminate the influence of the back electromotive force from the speaker and to eliminate dynamic distortion caused by signal return to improve the dynamic characteristics.
The use of a pure dynamic power supply circuit with a 2-2 block capacitor suppresses the occurrence of dynamic IM distortion (intermodulation distortion) and improves the acoustic quality.
In order to eliminate the intrusion of external noise components, the power supply and main signal system are separated through a radiator in a chassis structure.
In addition, an input selector with an electronic switch has been adopted to provide an ideal layout for signal lines and to form a simple signal path by reducing the amount of wiring and shortening the wiring wires.
Equipped with a processor loop mechanism.
Equipped with two video inputs by complimentary service and push-pull circuit.
Equipped with Phono dedicated subsonic filter.
Built-in high-speed protection circuit.
Equipped with real-time tone control.
Model Rating
Type | Pre-main amplifier |
Power Amplifier Unit | |
Rated Output (20 Hz ~ 20 kHz) | 80W + 80W (8 Ω) 90W + 90W (6 Ω) |
Input Sensitivity / Impedance | Processor Loop Input : 150mV/30k Ω |
Total harmonic distortion factor | 0.007% (20 Hz to 20 kHz, 40W, 8 Ω) |
Cross modulation distortion factor | 0.003% (80W Equivalent, 8 Ω) |
Dynamic Power | 160W/2 Ω |
TIM Distortion | Measurement limit value or less |
Slew rate | ± 150 V / μ sec or more |
Output bandwidth | 5 Hz to 80 kHz (40W, 0.1%, 8 Ω) |
Frequency characteristic | 4 Hz ~ 150 kHz, + 0 -3dB (1W, 8 Ω) |
Output impedance | 0.1 Ω or less |
Output terminal | Speaker : AORb : 6 ~ 16 Ω, A + B : 12 ~ 16 Ω Headphone Jack Maximum Output : 290 mW (8 Ω), 8 ~ 400 Ω Compatible |
Preamplifier Section | |
Input Sensitivity / Impedance | Phono MM : 2.5mV/47k Ω Phono MC : 0.2mV/200 Ω CD, Video1, 2, AUX/Tuner, Tape1, 2 : 150mV/30k Ω |
Maximum Output / Rated Output | 10V/150mV (including processor and loop output) |
Total harmonic distortion factor | 0.002% (1 khz, 10 v, processor loop output included) |
RIAA deviation | 20 Hz to 50 kHz ± 0.3 dB (MC IN to processor loop output included) |
<General> | |
SN ratio (input ratio (input short-circuit, auditory sense compensation A) | Phono MM : 82 dB at 2.5 mV input Phono MC : 62 dB (at 0.25 mV input) Line : 105 dB (at 150 mV input) |
Tone control characteristics | Bass : ± 10 dB (100 Hz) Treble : ± 10 dB (10 kHz) |
Subsonic Filter for Phono | 16 Hz, -12dB/oct. |
Picture-in performance | Frequency characteristics : DC to 10 MHz ± 1 dB Rated voltage / impedance : 1Vp-p75 Ω |
Power consumption (Electrical Appliance and Material Control Law) | 150W |
Pwer | 100 VAC, 50Hz/60Hz |
External dimensions | Width 434x Height 137x Depth 385 mm (including foot, knob, terminal, etc.) |
Weight | 9.5kg |