Mar 05, 2012 · Hello, I have a vintage Marantz 4230 receiver that makes a crackling, popping sound from the speakers when I turn on the power. What might cause this problem? So far I have replaced two of the smaller capacitors, 50v, 47uF, since they were obviously faulty (loose leads)and I have lubricated... On one of them the domes have a few little dents but don’t effect the sound. Probably would be pretty easy to pop them out. Vintage Marantz SP1000 Floor Speakers *SOUND GOOD* $125 OBO -... Fisher Marantz Stone is an architectural lighting design firm offering complete planning, design and commissioning services, specializing in museum, performing arts, restoration, offices, academic and cultural institutions, transporation centers, hotel and hospitality, civic centers, hospitals, site lighting and themed projects around the world.