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Marantz 150 Scope Color Question

Stereofan

Active Member
I have always had the desire to convert my 150 tuner's green scope to blue and I eventually learned that the color change was a function of a blue gel over the face of the scope tube that Marantz added sometime during the production cycle.
I work at a university with a working Theatre dept. so I asked and received several blue gel samples in an attempt to achieve that blue color. Needless to say I was surprised and disappointed that the gels only made the green darker and not blue at all. I realize I could buy another 150, remove the gel, install it in mine then re-sell it. But I don't want to resort to that unless I have to.
Therefore my question is does anybody know what Marantz did to the gel from a scientific standpoint to make the green scope blue? If so, does anybody know of a parts source that I can be purchase this material through? Thanks!
 
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I have always had the desire to convert my 150 tuner's green scope to blue and I eventually learned that the color change was a function of a blue gel over the face of the scope tube that Marantz added sometime during the production cycle.
I work at a university with a working Theatre dept. so I asked and received several blue gel samples in an attempt to achieve that blue color. Needless to say I was surprised and disappointed that the gels only made the green darker and not blue at all. I realize I could buy another 150, remove the gel, install it in mine then re-sell it. But I don't want to resort to that unless I have to.
Therefore my question is does anybody know what Marantz did to the gel from a scientific standpoint to make the green scope blue? If so, does anybody know of a parts source that I can be purchase this material through? Thanks!

I actually went the other way with one of my 2500 receivers and removed the blue film to get a green tracing. It is just a piece of clear blue plastic. Try your local arts and crafts store or perhaps a stationary store that carries clear colored notebook dividers. You can cut to fit.
 
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