Audio Database

The

DENON PMA-940V
69,800yen(around the 1985 time)

Description
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The Integrated Amplifier which polished a function and the engine performance and was crowded as a component of CD age.

What has improved the dual super unreturned circuit further, and raised the slew-rate characteristic is adopted as a power stage.
In the output stage, it has three-step Darlington push pull composition which uses the high speed and mass power transistor of more than fT50MHz and Pc150W.
Moreover, it has perfect direct-current composition which uses not a coupling condenser for all the signal courses between speaker output terminals from MC input terminal by direct-current servo circuit,The new current mirror circuit and interval of high speed transistor adoption of fT250MHz excellent in a non-feedback system without signal return and the high region characteristic have realized the high slew rate.

Transformer [ of 220VA ] and block condenser 32,800micro F for audios (8,200micro-Fx4) etc. is adopted as a power-source part.
Furthermore, generating of low-pass distortion is reduction-ized by setup of the floating load circuit which clarified ground electric potential.
Moreover, sound quality degradation which considers ripple current as a cause is sharply improved by adoption of a newly developed pure dynamic power supply circuit.

The super equalizer constituted from the low-noise FET differential amplification first rank has attained the wide-range characteristic of RIAA deflection 20Hz-100kHz}0.3dB (at the time of MC).

In order to correspond to a surround processor, a graphic equalizer, a channel divider, etc., the circuit for connection "processor loop" is equipped.

The gilding terminal is adopted as a Phono input terminal.

Broadband real-time tone control and a Subsonic Filter are carried.


Rating of a mode
Form Integrated Amplifier
<Power amplifier part>
Output power (20Hz - 20kHz) 105W+105W (8ohms)
125W+125W (6ohms)
Input sensitivity/impedance Processor loop input: 150mV/20kohm
THD 0.004% (20Hz - 20kHz, 52.5W, 8ohm)
Cross modulation distortion 0.003% (an equivalent for 105W, 8ohms)
Dynamic power 250W/2 ohm
TIM distortion Below measurement full limits
Slew rate More than }350v/microsec
Output bandwidth 5Hz - 80kHz (52.5W, 0.03%, 8ohms)
Frequency response 4Hz - 250kHz, and +0 -3dB (1W, 8ohm)
Output load impedance 0.1ohm or less
Output terminal Speaker: AorB:6-16ohm, A+B:12-16ohm
Headset-jack maximum except take-off: 410mW (8ohms), 8-400-ohm conformity
<Preamplifier part>
Input sensitivity/impedance Phono MM: 2.5mV/47kohm
Phono MC: 0.2mV/100 ohms
CD, Tuner, Video 1 or 2/AUX, Tape1, 2:150mV/30kohm
The maximum except take-off/Output power 12V/150mV
THD 0.001% (1kHz, 8V)
RIAA deflection 20Hz-100kHz}0.3dB (MC-MM IN-Rec Out / processor loop)
<Synthesis>
Signal to noise ratio
((A) An input short circuit, auditory sensation weighting)
Phono MM: 87dB (at the time of a 2.5mV input)
Phono MC: 70dB (at the time of a 0.25mV input)
Line: 107dB (at the time of a 150mV input)
Tone control characteristic Bass: }10dB (100Hz)
Treble: }10dB (10kHz)
Subsonic Filter 18Hz, -6 dB/oct
Loudness control characteristic 100Hz:+7dB
10kHz:+6dB
Muting -20dB
Power consumption 205W (Electrical Appliance and Material Control Law)
Power source AC100V, 50Hz/60Hz
Dimensions Width 434x height 139x depth of 414mm
(it is an included about a foot, a knob, a terminal, etc.)
Weight 10.6kg