So I would reverse each "hot" and "ground?"Most headshells use this color code:
White is left hot.
Black is left ground.
Red is right hot.
Green is right ground.
So I would reverse each "hot" and "ground?"Most headshells use this color code:
White is left hot.
Black is left ground.
Red is right hot.
Green is right ground.
YesSo I would reverse each "hot" and "ground?"
Great advice. Any suggestions how to adjust the carrier level, too? I keep getting a crackling sound, no matter if I use the JVC or Shure cartridge.What you do is use your worst CD-4 album (if you have Cat Steven's Greatest Hits" that's a good one to use. Turn down your separation pots so that you only hear the subcarriers. It will sound hollow, that's normal. Play the record and adjust for the best fidelity. I would turn it up until it clears up and go no more. If you have trouble cleaning it up, adjust for the least distortion. If the clean area is wide, then find the edge points and go in between. Then bring up your separation pots and adjust for max separation. If it sounds clean over a wide range, then that's a good sign that you have a very good CD-4 cartridge/stylus.
Make sure your phono cables are of low capacitance. Standard cables usually have much to high capacitance to ever allow CD-4 to work properly. Where to find them is another question? Keep them short as twice the length equals twice the capacitance.Great advice. Any suggestions how to adjust the carrier level, too? I keep getting a crackling sound, no matter if I use the JVC or Shure cartridge.
Good 'ol Blue Jeans Cable has them:Make sure your phono cables are of low capacitance. Standard cables usually have much to high capacitance to ever allow CD-4 to work properly. Where to find them is another question? Keep them short as twice the length equals twice the capacitance.
That’s the cables I’ve been buying recently, and the plugs are snug but not too tight. I’m considering a new TT to replace my old Technics 1500 with a 1200Mk7 and you can use your external cables on those, so we’ll see. And by the way, just got my QRX-8001 back inGood 'ol Blue Jeans Cable has them:
https://www.bluejeanscable.com/store/audio/index.htm
You can order to the exact length you want & other choices. I've never seen a TT with RCA out jacks on them; they are solder terminated internally. So you would have to open up the TT, unsolder the current cable & replace with new.
I'm using my original Technics SL-1700 turntable, so they should be fine. I remember buying it years ago with CD-4 in mind. So I should be good thereMake sure your phono cables are of low capacitance. Standard cables usually have much to high capacitance to ever allow CD-4 to work properly. Where to find them is another question? Keep them short as twice the length equals twice the capacitance.
I’ve often wondered if thin shielding on these old TT cables could introduce some noise, the Blue Jeans cables are also thick and are well shielded?I'm using my original Technics SL-1700 turntable, so they should be fine. I remember buying it years ago with CD-4 in mind. So I should be good there
Something tells me that the cables on the SL-1700 come right out of the body and can't just be unplugged and replaced.I’ve often wondered if thin shielding on these old TT cables could introduce some noise, the Blue Jeans cables are also thick and are well shielded?
Right, see Sonik’s post above.Something tells me that the cables on the SL-1700 come right out of the body and can't just be unplugged and replaced. ☹
Do you get a crackling sound occasionally from other gear sources through your receiver?Great advice. Any suggestions how to adjust the carrier level, too? I keep getting a crackling sound, no matter if I use the JVC or Shure cartridge.
No. Only happens when I'm playing CD-4, no other source. It's like the record is crackling, except when I turn off the demodulator, it's fine. Maybe it's the demodulator is shot.Do you get a crackling sound occasionally from other gear sources through your receiver?
I'm not an electronics expert like some of these guys here, but that's one of the reasons I sent my Sansui in for restoration, I'd occasionally get a crackling sound and figured it was some electronic part starting to fail.
Great advice. Any suggestions how to adjust the carrier level, too? I keep getting a crackling sound, no matter if I use the JVC or Shure cartridge.
I’m leaning toward the static electricity; isn’t there some inexpensive device that removes that from LPs? I know I’ve seen a video of something like thatIt's fine dust in the CD-4 groove. Larger dust particles make crashing sounds like people breaking pencils in half.
It is also possible that static electricity can make such sounds.
Years ago I got an antistatic brush on its own 'tonearm' which was earthed, it got rid of most of the static but added its own 'rumbling sound' so I ditched it!I’m leaning toward the static electricity; isn’t there some inexpensive device that removes that from LPs? I know I’ve seen a video of something like that
I just added a dedicated thread to this issue to keep this thread on track:Years ago I got an antistatic brush on its own 'tonearm' which was earthed, it got rid of most of the static but added its own 'rumbling sound' so I ditched it!
I'm using one now, too.Years ago I got an antistatic brush on its own 'tonearm' which was earthed, it got rid of most of the static but added its own 'rumbling sound' so I ditched it!
Years ago I got an antistatic brush on its own 'tonearm' which was earthed, it got rid of most of the static but added its own 'rumbling sound' so I ditched it!
Enter your email address to join: