Forums :: Resources :: Features :: Photo Gallery :: Vintage Radio Shows :: Archives
Support This Site: Contributors :: Advertise


It is currently Dec Mon 09, 2019 5:48 am


All times are UTC [ DST ]





Post New Topic Post Reply  [ 10 posts ] 
Author Message
 Post subject: Sonotone 2ta mono cartridge
PostPosted: Nov Mon 11, 2019 2:43 am 
Member

Joined: Oct Mon 22, 2012 2:30 am
Posts: 253
Location: Saint Louis, Mo
How do I ground this cartridge when there are only two connections on it. I hear hum when the turntable is connected to my Midwest 162r radio. Any suggestions would helpful.


Top
 Profile  
 
 Post subject: Re: Sonotone 2ta mono cartridge
PostPosted: Nov Mon 11, 2019 3:00 am 
Member

Joined: Oct Mon 22, 2012 2:30 am
Posts: 253
Location: Saint Louis, Mo
I didn't mention an important thing, the record player is not original to the Midwest. It is a Philco model from 1959.


Top
 Profile  
 
 Post subject: Re: Sonotone 2ta mono cartridge
PostPosted: Nov Mon 11, 2019 3:19 am 
Member

Joined: Jan Wed 16, 2013 12:04 am
Posts: 1614
Location: 77001
How about some photos of the record changer ?
Underside phono connections and tonearm/cart
connections. Top of changer with platter removed.
Best,
Hotwax


Top
 Profile  
 
 Post subject: Re: Sonotone 2ta mono cartridge
PostPosted: Nov Mon 11, 2019 3:45 am 
Member

Joined: Oct Mon 22, 2012 2:30 am
Posts: 253
Location: Saint Louis, Mo
Photos, lousy focus took them with my kindle.


Attachments:
IMG_20191110_203757_burst_01.jpg
IMG_20191110_203757_burst_01.jpg [ 398.64 KiB | Viewed 282 times ]
IMG_20191110_203817_hdr.jpg
IMG_20191110_203817_hdr.jpg [ 401.06 KiB | Viewed 282 times ]
IMG_20191110_204013_hdr.jpg
IMG_20191110_204013_hdr.jpg [ 363.22 KiB | Viewed 282 times ]
Top
 Profile  
 
 Post subject: Re: Sonotone 2ta mono cartridge
PostPosted: Nov Mon 11, 2019 3:30 pm 
Member

Joined: Aug Sun 23, 2015 6:01 pm
Posts: 1009
Location: South Jersey East of Philly
Does the hun go away when you short the two cartridge leads?


Top
 Profile  
 
 Post subject: Re: Sonotone 2ta mono cartridge
PostPosted: Nov Mon 11, 2019 8:18 pm 
Member

Joined: Oct Mon 22, 2012 2:30 am
Posts: 253
Location: Saint Louis, Mo
How do i short the leads? I restore radios i know nothing about phono cartridge wiring.


Top
 Profile  
 
 Post subject: Re: Sonotone 2ta mono cartridge
PostPosted: Nov Mon 11, 2019 11:00 pm 
Member

Joined: Jan Wed 16, 2013 12:04 am
Posts: 1614
Location: 77001
Ronin61 wrote:
How do i short the leads? I restore radios i know nothing about phono cartridge wiring.

1. With the amp powered up, just touch the 2 leads together.

2. From the photos, it appears that the audio leads are
surrounded by meshed wire ( shielded ).
And that there is a clip soldered onto the mesh wire.
Is this the case ?

3. Have you cleaned the Sonotone connection blades and
the inside of the clips on the cartridge wires ?
Hotwax


Top
 Profile  
 
 Post subject: Re: Sonotone 2ta mono cartridge
PostPosted: Nov Tue 12, 2019 1:39 am 
Member
User avatar

Joined: Jan Tue 26, 2016 7:37 pm
Posts: 171
Location: Lexington, NC
What kind of wire are you using to connect the phono? To me it looks like zip cord. Or lamp cord. If so, then that's the problem. You need to use shielded cable. It has a center conductor with a wire mesh around the outside that shields it from hum. You can use an old RCA to RCA patchcord and just cut off one end. Just make sure it's shielded cable.


Top
 Profile  
 
 Post subject: Re: Sonotone 2ta mono cartridge
PostPosted: Nov Tue 12, 2019 3:38 am 
Member

Joined: Oct Mon 22, 2012 2:30 am
Posts: 253
Location: Saint Louis, Mo
You are right sir i am using a cable that i had lying around. Tomorrow i will put in a good shielded cable and try it out. I will report back to all with success or failure.


Top
 Profile  
 
 Post subject: Re: Sonotone 2ta mono cartridge
PostPosted: Nov Tue 12, 2019 5:07 am 
Member

Joined: Jan Thu 01, 1970 1:00 am
Posts: 4278
Location: Boston, MA USA
Make sure the ground lead connects to the metal changer chassis as well as the cartridge lead.

-David


Top
 Profile  
 
Post New Topic Post Reply  [ 10 posts ]  Moderator: Alan Voorhees

All times are UTC [ DST ]


Who is online

Users browsing this forum: Google Adsense [Bot] and 6 guests



Search for:
Jump to:  




























Privacy Policy :: Powered by phpBB