Denon PMA-425R Service Manual

Specifications and Main Features

Model PMA – 425 R is engraved with the rated output power of 52 Watts per channel if the speakers are of 8 ohms ie. 26 HZ to 20 KHZ with pretuned harmonic distortion set at 0.08%. The specifications are inclusive of the following features:

  • Channels Rated Out Power: 52 W/A per speaker when set at 8 ohms;
  • Sensitivity: 26HZ;
  • Total harmonic distortion: 52 Watts per channel when set on PHONO(MM) type speakers.

A plethora of Different speakers yield different maximum inputs, such as:

  • AUX, TUNER and CD have a maximum input of 150 mV;
  • TAPE-1 and TAPE – 2 have a maximum input of 450 mV.

Additional specs include:

  • Power Supply: AC 230V or 50Hz in Europe, AC 120V or 60 Hz in USA and Canada;
  • Weight: 6.2 pounds or 13 ounces;
  • DIMENSIONS: 436(W), 121(H) and Depth of 285 mm;
  • Volume Control: Variable Loudness;
  • Tone Control: BASS TREBLE.

Frequently Asked Questions

A: For Europe it is rated at 230V/50Hz and US is rated for 120V/60Hz.

Q: Is it possible to connect multiple speakers with PMA-425R matrix?

A: This particular PMA-425R can be connected with two speakers labeled speaker system A and speaker system B.

Q: What is the total harmonic distortion (T .H .D) of this amplifier?

A: The total harmonic distortion at rated output is said to be 0.08 percent.

Q: How do you operate the volume control?

A: The volume control circuit is operated by a knob, which can be turned to raise or decrease the level of sound to be produced.

Q: Why do users need a remote control?

A: User can perform amplifier functions like, power on and off, change volume level or select input through the use of a remote control from a distance.

User Manual

Denon PMA-425R Service Manual
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