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 Post subject: Bad ceramic cartridge? Telefunken TW501 Turntable
PostPosted: Jun Tue 18, 2019 10:28 pm 
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Joined: Oct Wed 19, 2016 4:02 am
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I recently acquired a Braun MM4 console with a Telefunken TW501 turntable. The cartridge and needle were missing from the tonearm, but in opening up the cabinet I found the original cartridge buried among the piles of dust. No needle though. Gary at Voice of Music was able to supply me with the correct needles. I cleaned up the cartridge, (T20/2) installed the new stylus (Sapphire .7 tip) and played an LP at 33.3 rpm, it works, it sounds good, the only problem is I must turn the volume up all the way to get anything out of the speakers. The rest of the console plays beautifully and at normal volume. Do these ceramic cartridges lose their piezoelectric "umpf" with age? Would a replacement cartridge make any difference? How do I get more volume? Would a diamond stylus yield any bettering results? Any advice you can offer is really appreciated! Photos included.

David R.


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File comment: Original cartridge, with new stylus
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File comment: Tonearm underside
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 Post subject: Re: Bad ceramic cartridge? Telefunken TW501 Turntable
PostPosted: Jun Wed 19, 2019 2:49 pm 
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Joined: Aug Sun 23, 2015 6:01 pm
Posts: 950
Location: South Jersey East of Philly
Ceramics can go bad too...also, the flexible saddle the needle sits in can harden and restrict output. You may have to get creative to come up with a replacement. Is this mono or stereo?
Best test to prove the cartridge is bad, is touch the connectors on the cartridge with a screwdriver and/or your fingers and see if you get a good loud buzz if the volume is up...if you do then then it's going bad.


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 Post subject: Re: Bad ceramic cartridge? Telefunken TW501 Turntable
PostPosted: Jun Wed 19, 2019 4:03 pm 
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Joined: Oct Wed 19, 2016 4:02 am
Posts: 20
It is stereo. Not sure how to touch the contacts as they are only accessible if the cartridge is removed. Can you clarify?

David


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 Post subject: Re: Bad ceramic cartridge? Telefunken TW501 Turntable
PostPosted: Jun Wed 19, 2019 6:40 pm 
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Joined: Jan Wed 16, 2013 12:04 am
Posts: 1503
Location: 77001
Tbirdkid wrote:
Ceramics can go bad too...also, the flexible saddle the needle sits in can harden and restrict output. You may have to get creative to come up with a replacement. Is this mono or stereo?
Best test to prove the cartridge is bad, is touch the connectors on the cartridge with a screwdriver and/or your fingers and see if you get a good loud buzz if the volume is up...if you do then then it's going bad.

Remove the record changer and trace the audio input
wires that run from the tonearm to a connection
on the record changer base.

Then do the above test as Tbirdkid wrote.
You can use alligator clip leads on audio terminals,if necessary, to
give you enough length to test.

You are also testing that the audio leads' connection is good going
to the amplifier.

Hotwax


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