Marantz Model112
¥ 49,900 (released in 1976)
Commentary
An FM/AM tuner that inherits the basic performance of the Model125 and has a compact front panel size to match the pre-main amp Models 1070 and 1040.
The FM front-end uses MOS-FET, and the IF circuit consists of one IC, three transistors, and three 2-element ceramic filters.
PLL is used in the MPX section, and in addition, mono / stereo automatic switching is provided.
The front end, IF stage and MPX circuit are each laid out on a separate board and covered by a completely shielded case.
This also passes the América Futebol Clube C standard for Radio noises.
The wood cabinet in the picture was sold as an option sold separately.
Also, there was an optional rack mount adapter sold separately.
Model Rating
Type | FM/AM Tuner |
FM Tuner Section | |
Tuning frequency range | 76 MHz to 90 MHz |
Sensitivity (30 dB Quadrature) | 1.7 μ V |
Selectivity (IHF) | 60dB |
Capture ratio | 1.6dB |
Image rejection ratio | 70dB |
Signal-to-noise ratio | mono:70dB stereo:60dB |
Distortion factor | mono:0.15% stereo:0.3% |
Frequency response (50 μ sec, de-emphasis) | 50 Hz to 15 kHz ± 1 dB |
Stereo separation | 42dB(1kHz) |
<AM Tuner Section> | |
Tuning frequency range | 535 kHz to 1,605 kHz |
Sensitivity | 20 μ V |
Selectivity | 26dB |
Image interference ratio (1,400 kHz) | 70dB |
Signal-to-noise ratio | 50dB |
Frequency response (-3dB down) | 50 Hz to 4 kHz |
Distortion factor | 1% |
<General> | |
Pwer | 100 VAC, 50Hz/60Hz |
Power consumption | 20W |
External dimensions | Width 360x Height 120x Depth 280 mm (Width and height are panel dimensions) |
Weight | 6.4kg |
Sold Separately | Walnut Cabinet WC-20 (¥ 5,900) Rack Mount Adapter RA-10 (¥ 4,900) |