Stereophonic Receiver 2216

Marantz (Sound United LLC); Vista, CA

  • Year
  • 1977 ??
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 209489

 Technical Specifications

  • Number of Transistors
  • Semiconductors present.
  • Semiconductors
  • Main principle
  • Superheterodyne (common)
  • Wave bands
  • Broadcast (BC) and FM or UHF.
  • Power type and voltage
  • Alternating Current supply (AC) / 220 Volt
  • Loudspeaker
  • - This model requires external speaker(s).
  • Power out
  • 32 W (unknown quality)
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: Stereophonic Receiver 2216 - Marantz Sound United LLC;
  • Shape
  • Book-shelf unit.
  • Dimensions (WHD)
  • 440 x 137 x 293 mm / 17.3 x 5.4 x 11.5 inch
  • Notes
  • Am/FM Stereo Receiver, 2x 16 Watt.
    Inputs: Tape, Phono MM, Aux.
    FM muting, High filter, Bass and Treble Control, Tuning Meter.
  • Net weight (2.2 lb = 1 kg)
  • 12 kg / 26 lb 6.9 oz (26.432 lb)
  • Price in first year of sale
  • 240.00 $
  • Author
  • Model page created by Franz Scharner. See "Data change" for further contributors.

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 Forum

Forum contributions about this model: Marantz Sound United: Stereophonic Receiver 2216

Threads: 1 | Posts: 5

I have just rebuilt a Marantz 2216 receiver. After the rebuild I noted the receiver's FM reception sounded 'bright'.

The FM stereo demodulator is a Hitachi HA1156W, for which I found the original datasheet and application notes online. The recommended de-emphasis is achieved by loading the channel outputs with a resistor and capacitor in parallel shunted to audio reference (i.e. the (+) or (-) rail).

For for 50μS the recommended load is 3k9Ω in parallel with 0.012μF, as shown in the application notes.

For some unnknown reason Marantz used 0.0039μF capacitors in the 2216 deemphasis circuit, which produces a time constant of 15μS, not the 50μS required for most countries or the 75μS for USA. This results in a rising frequency response and bright sound.

Not having any 0.012μF capacitors to hand, I shunted C311 & C312 with 0.0082μF capacitors on the underside of the circuit board. This corrects the high frequency response.

John Matheson, 27.Mar.21

Weitere Posts (5) zu diesem Thema.