Marantz Model 20b Tuner
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Front View
Image Attribution: CWG Enterprises
Date: June 4th, 1999
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| General |
| Description | Difference from the 20 is front end modifications. |
| Rarity | X-Rare |
| Retail Price | 695 |
| First Year | 1971 |
| Last Year | 1973 |
| Wood Case | WC-1 |
| Channels | Two |
| Power Consumption | 50 watts |
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| Physical |
| Width | 15 3/8ths |
| Height | 5 3/4th |
| Depth | 14 1/8th |
| Weight | 25 lbs |
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| FM Tuner |
| Gyro Tuning | Yes |
| RF Sensitivity | 1.8 uV |
| THD, Mono | 0.15% |
| Frequency Response | 20 Hz to 15 KHz |
| IF Image Rejection | 85 dB |
| Stereo Subcarrier Rejection | 60 db @ 38 KHz, 65 dB @ 67 KHz |
| FM IF Bandwidth, normal | 3db @ 230 khz, 80db @ 880 khz |
| Spurious Rejection | 90 dB |
| Stereo Separation at 1 kHz | 45 dB |
| Mono Switch | Yes |
| Multiplex Filter (Hi-Blend) | Hi-Blend |
| Muting Switch | Yes |
| Oscilloscope | Yes |
| Scope Horizontal Position Adjustment | Yes/X |
| Scope Vertical Position Adjustment | Yes/Y |
| Scope External Audio Display Capability | Yes |
| Scope Internal Audfio Display Capability | Yes |
| Scope External Audio Gain Control | Yes |
| Scope Tuning Indication | Yes |
| Scope Multipath Indication | Yes |
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