Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5

Horseshoe magnet pickup
#1

I see your posting of an article about refurbishing a horseshoe magnet pickup.  I wish I had that 35 years ago when I acquired an Atwater Kent model 75 radio/phonograph.  A radio technician I knew got the chassis working and the radio still sounds great.  The pickup was in terrible shape and all I knew was to try and replicate what I saw.  I found a coil and mashed it slightly in a vise to fit the cavity, replaced the rubber damper and it worked!  I knew nothing about rubber or coil specs.  A couple years ago it was sounding sick (I rarely play it except for fun experiments).  The rubber damper seemed fine, and I used heat sink tubing for the cradle sleeves.  I had always been concerned about the heavy weight of the magnet, and it seemed weak.  I didn't know about using a "keeper" when I removed it for the other repairs.  Then I thought of trying powerful button magnets.  The result was almost ear shattering volume! More experiments and I now use just one little button magnet on each side (the polarity must be right or you won't hear anything, plus the pickup is a lot lighter.  I've tried minute adjustments to the magnet screws and right now the volume and frequency response seem good but there is a little distortion on the loud passages.  I was astounded by how loud it got when the cradle was more loose.  Any suggestions on the distortion?  Really not bad, just noticeable.


Messages In This Thread
Horseshoe magnet pickup - by rvt32016 - 03-28-2021, 02:13 PM
RE: Horseshoe magnet pickup - by Chas - 05-26-2021, 04:38 PM
RE: Horseshoe magnet pickup - by Arran - 05-30-2021, 11:03 PM
RE: Horseshoe magnet pickup - by rvt32016 - 07-06-2021, 03:38 PM
RE: Horseshoe magnet pickup - by Arran - 07-09-2021, 08:29 PM



Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
IF can wire size and Rubber mounts?
Renovated Radios do carry what you need. As for the voltage, a wire should be at least 300V-rated.morzh — 11:13 PM
12' Philco
Andre the Giant got 2" on Kareem :lol:morzh — 11:11 PM
IF can wire size and Rubber mounts?
Thanks for the info but I doubt that a hardware store would be carrying the proper tuner assembly support mountings for ...georgetownjohn — 10:38 PM
12' Philco
Perhaps Kareem Abdul Jabbar?GarySP — 10:33 PM
My last cabinet for this year
Outstanding work, Dan! Take care and BE HEALTHY! GaryGarySP — 10:31 PM
My last cabinet for this year
They are a nice looking radio, Stromberg. I have a small tabletop octagon-dial one. It sounds surprisingly nice. And t...morzh — 09:40 PM
Philco 41-608 changer coupler
Different years but the same idea.morzh — 09:38 PM
My last cabinet for this year
That’s a beauty! :thumbup:klondike98 — 09:24 PM
Philco 41-608 changer coupler
Hi Morzh, I've searched using Mondial as the user name with various keywords such as 'coupler', 'motor', 'idler', 'p...alangard — 08:31 PM
Philco 16B Parts
I think the chassis is painted.morzh — 08:13 PM

[-]
Who's Online
There are currently 5002 online users. [Complete List]
» 2 Member(s) | 5000 Guest(s)
AvatarAvatar

>