Question about Columbia reproducer

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Django
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Re: Question about Columbia reproducer

Post by Django »

De Soto Frank wrote:Marco is quite correct in his observation about the locking-nuts being absent from the needle-bar pivot screws.

They will quickly loosen enough to cause "buzzing", "rasping", sounding like you're playing the record with a very worn needle.

( Good eye, Marco... :) I can't believe I didn't notice ! :monkey: )


Hopefully locking-nuts from a later, more common #6 Columbia would work ?


This may resolve your reproducer deficiencies... If you can make it sound decent with the arm and reproducer you have, perhaps enjoy as-is.
The screws should be just tight enough to remove play. Any tighter is muffle the sound too.

blau28
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Re: Question about Columbia reproducer

Post by blau28 »

Hello

Following the indications to Bill (Lucius1958) I changed the aluminium diaphragm for one of mica and the change is spectacular.
The sound now is rich, full ranged.
Thanks to all for your help and comments.
Regards
Albert

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Curt A
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Re: Question about Columbia reproducer

Post by Curt A »

A change to mica was also going to be my suggestion, since I have a Columbia BII with the same tonearm, different reproducer, but mica diaphragm and it sounds great... Also, my reproducer does not have a metal cover over the diaphragm... That cover might affect the sound as well.
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howardpgh
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Re: Question about Columbia reproducer

Post by howardpgh »

If that metal diaphragm was original to the reproducer, it is possible that it was "tired" metal fatigued. That would cause it to be dead sounding. My 2 cents

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alang
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Re: Question about Columbia reproducer

Post by alang »

To the best of my knowledge, the Columbia Concert Grand reproducer of that period had a mica diaphragm. I believe that ribbed aluminum diaphragm was a later replacement.

Andreas

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