Description: Crown FM1 Working Vintage Stereo Tuner 230 VAC Need ServiceThis device requires service. The 88 – 108 MHz LED display shows instability after warming up.Only frequencies ending with odd numbers can be received (for instance: 91.1 97.3 98.5 102.7 MHz)Frequencies ending with even numbers cannot be received (for instance : 91.2 97.4 98.6 102.8 MHz)Other than that, everything works as it should. Wired for European 230 VAC but it can easily be rewired for other voltages.Please look at the pictures carefully because they are an integral part of the description.Original Instruction Manual with a schematic diagram will be included.Description:The FM1 is a 6-gang tuner with 3 ceramic filters and one "SAW" (Surface Acoustic Wave) filter, like those used in some of the better Kenwood tuners.The FM1 has variable outputs with independent controls for the left and right channels, and a mute adjustment on the back along with multipath outputs.The ceramic filters are socketed rather than soldered, so it would be easy to swap them out for narrower ones.The FM1 uses quadrature detection using the common CA/LM3189 IC compared to the pulse count detection (HA12401) in the FM2.The MPX board PCB layout has a very limited ground plane compared to the rest of the boards.The 7-segment display wires running directly on top of the MPX board's gain blocks.This could explain the not-so-good spec of -65 dB hum and noise.Crown used non-audio grade CMOS bilateral switches (MC14016/CD4016) in the audio path for muting and MPX noise filter.These can be upgraded to Sanyo's LC4966. The FM1's controls and general build quality said military or laboratory spec. SHIPPING ONLY TO EU COUNTRIES !
Price: 399 USD
Location: Zagreb
End Time: 2024-11-18T21:28:26.000Z
Shipping Cost: 32 USD
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All returns accepted: ReturnsNotAccepted
Brand: Crown
