Vinyl Asylum

RE: Cinemag 1254 SUT

91.196.220.73

richardl

In Reply to: RE: Cinemag 1254 SUT posted by Johno on February 05, 2025 at 16:58:56

Johno, you will love the 1254. I used a 3440A before and the 1254 is much nicer. However, you can use the diagram that 6bqr gave you and just hardwire one of the setups. Just remember that the no dot side hooks up to the ground. Good luck with your project.

Follow Ups:

RE: Cinemag 1254 SUT - Johno 23:52:57 02/08/25 (0)
Thank you, the 1254 SUT is an absolute audio bargain, cheers
RE: Cinemag 1254 SUT - Tre' 21:24:27 02/08/25 (2)
I would ground the low side of the secondary but used two conductor shielded wire from the tonearm. Ground the tonearm and ground the shield at the transformer end but leave the primary winding floating. That way you get common mode rejection of anything picked up in the wire run. Just like a microphone cable.
Tre'
Have Fun and Enjoy the Music
"Still Working the Problem"

Edits: 02/08/25
- RE: Cinemag 1254 SUT - Johno 23:44:09 02/08/25 (1)
  Hi Tre,
  I lashed it up in a Hammond box using full primary x10 gain for a listen.
  
  I followed the cinemag recommendation which has both the primary/secondary floating they extend a black/white wire which goes to faraday ground or chassis/box ground which is where I fixed my TT ground onto and zero hum, very happy.
  
  Connected to AT OC9XSL cart 0.4mV, 12 ohms source and it sounds excellent, plenty of meat on the bones, I prefer it to the Lundahl LL1931 which is no slouch either.
  
  Cheers Johno
  - RE: Cinemag 1254 SUT - Tre' 06:40:43 02/09/25 (0)
    It's great that you had good results but using two conductor shielded wire is important.
    
    With two conductor shielded wire and hum that reaches the two conductors does so evenly and that makes the rejection deeper. Using normal single conductor wire means the shield get more hum than the inside conductor and the CCR (common mode rejection) will not be as complete.
    
    To me the key to the hook up is the two conductor shielded wire. I just make my own custom cables.
    
    Tre'
    Have Fun and Enjoy the Music
    "Still Working the Problem"

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