+ Reply to Thread
Page 2 of 5 FirstFirst 1234 ... LastLast
Results 11 to 20 of 43

Thread: Single ended to balanced conversion....

  1. #11
    Join Date: Sep 2009

    Location: west mids, UK

    Posts: 1,412
    I'm Phil.

    Default

    fabulous , one amp on my listening list . when i had a ref 5 i had an expert in cable making make me a xlr to rca set of cables . as my power amps were only rca inputs . we had rather a job as they hummed and despite our best efforts i never succeeded so went onto rca to rca . i am sure someone could do it though

    incidentally the xlr were cardas
    modwright 36.5 DM /MSB s200 , / Marantz sa8005/bel canto 3.5, vbs , bel canto fm1
    sonos, . dct300/ /isotek sigmas /rfc/chord epic cabling/Kimber select/ proac studio 125

  2. #12
    Join Date: Dec 2015

    Location: Alicante. Spain.

    Posts: 1,357
    I'm Adrian.

    Default

    Hmmm - so maybe I'm going to have a problem with hum... Bugger...
    Technics SP10 mk2
    Jan Allaerts MC 1 Boron mk1 cart
    Miyajima Shilabe cart
    Hashimoto HM-X SUT
    Siggwan (gimballed not unipivot) Cocobola 12"
    Aurorasound Vida LCR Phonostage
    The Truth linestage
    Dave Slagle Autoformer Volume Controller
    Cary 805c SET amps
    Audio Note ANe-SPX speakers
    Townshend Isolda speaker cables
    Cardas Golden Presence interconnects

  3. #13
    Join Date: Dec 2015

    Location: Alicante. Spain.

    Posts: 1,357
    I'm Adrian.

    Default

    I've emailed the maker of the Truth to see if there is a solution - I thought the 75 was like many other amps, not true balanced operation but it is - so it really needs a truly balanced preamp. FFS...
    Technics SP10 mk2
    Jan Allaerts MC 1 Boron mk1 cart
    Miyajima Shilabe cart
    Hashimoto HM-X SUT
    Siggwan (gimballed not unipivot) Cocobola 12"
    Aurorasound Vida LCR Phonostage
    The Truth linestage
    Dave Slagle Autoformer Volume Controller
    Cary 805c SET amps
    Audio Note ANe-SPX speakers
    Townshend Isolda speaker cables
    Cardas Golden Presence interconnects

  4. #14
    Join Date: May 2008

    Location: Surrey

    Posts: 5,868
    I'm Rob.

    Default

    Do these powered units work?

    https://www.studiospares.com/Product....aspx?p=368360 There are cheaper alternatives around.

    There are also passive ones that use transformers to carry out the conversion. Are these worth having?

    https://www.studiospares.com/Microph...B&gclsrc=aw.ds
    Buy Bose...And get your parking validated!.

  5. #15
    Join Date: Dec 2015

    Location: Alicante. Spain.

    Posts: 1,357
    I'm Adrian.

    Default

    Ok so I'm stupid - can someone explain to me what a balanced circuit actually is...
    Technics SP10 mk2
    Jan Allaerts MC 1 Boron mk1 cart
    Miyajima Shilabe cart
    Hashimoto HM-X SUT
    Siggwan (gimballed not unipivot) Cocobola 12"
    Aurorasound Vida LCR Phonostage
    The Truth linestage
    Dave Slagle Autoformer Volume Controller
    Cary 805c SET amps
    Audio Note ANe-SPX speakers
    Townshend Isolda speaker cables
    Cardas Golden Presence interconnects

  6. #16
    Join Date: Oct 2016

    Location: Bolton, England

    Posts: 757
    I'm Andrew.

    Default

    Quote Originally Posted by farflungstar View Post
    Hmmm - so maybe I'm going to have a problem with hum... Bugger...
    Quote Originally Posted by farflungstar View Post
    I've emailed the maker of the Truth to see if there is a solution - I thought the 75 was like many other amps, not true balanced operation but it is - so it really needs a truly balanced preamp. FFS...
    Eh? No, there shouldn't be problem. You don't need a "truly balanced" preamp for it to work without humming. I'm pretty sure the Nuetrik adaptors will work without producing hum - I only said it's more complicated than it appears because there are several wiring options which will work but they're all a bit of a fudge. For example, you could leave pin 3 completely unconnected - but that would introduce some noise. Still, it would work and wouldn't (shouldn't?) hum.
    Generally pin 3 is grounded somehow. It could be grounded at the AR end of the cable (as it would if you used an adaptor) or it could be grounded at the preamp end of the cable (but that would require making a cable for the job).
    BTW, I wouldn't expect Cardas cable to be any better than anything else - what's more important is having it wired correctly. personally, I would make up a cable (two core plus screen) wired as in the diagrams on the previous page.

  7. #17
    Join Date: May 2008

    Location: Surrey

    Posts: 5,868
    I'm Rob.

    Default

    This is fairly well written for the layman (me included)

    http://www.aviom.com/blog/balanced-vs-unbalanced/
    Buy Bose...And get your parking validated!.

  8. #18
    Join Date: Dec 2015

    Location: Alicante. Spain.

    Posts: 1,357
    I'm Adrian.

    Default

    Quote Originally Posted by RothwellAudio View Post
    Eh? No, there shouldn't be problem. You don't need a "truly balanced" preamp for it to work without humming. I'm pretty sure the Nuetrik adaptors will work without producing hum - I only said it's more complicated than it appears because there are several wiring options which will work but they're all a bit of a fudge. For example, you could leave pin 3 completely unconnected - but that would introduce some noise. Still, it would work and wouldn't (shouldn't?) hum.
    Generally pin 3 is grounded somehow. It could be grounded at the AR end of the cable (as it would if you used an adaptor) or it could be grounded at the preamp end of the cable (but that would require making a cable for the job).
    BTW, I wouldn't expect Cardas cable to be any better than anything else - what's more important is having it wired correctly. personally, I would make up a cable (two core plus screen) wired as in the diagrams on the previous page.
    That's exactly what I initially thought David. Live to pin 1, return to pin 2, and earth shield to pin 3. But having checked forums no one, it seems, is running it that way - all are using balanced preamps.
    Technics SP10 mk2
    Jan Allaerts MC 1 Boron mk1 cart
    Miyajima Shilabe cart
    Hashimoto HM-X SUT
    Siggwan (gimballed not unipivot) Cocobola 12"
    Aurorasound Vida LCR Phonostage
    The Truth linestage
    Dave Slagle Autoformer Volume Controller
    Cary 805c SET amps
    Audio Note ANe-SPX speakers
    Townshend Isolda speaker cables
    Cardas Golden Presence interconnects

  9. #19
    Join Date: Oct 2016

    Location: Bolton, England

    Posts: 757
    I'm Andrew.

    Default

    Quote Originally Posted by Puffin View Post
    Do these powered units work?

    https://www.studiospares.com/Product....aspx?p=368360 There are cheaper alternatives around.

    There are also passive ones that use transformers to carry out the conversion. Are these worth having?

    https://www.studiospares.com/Microph...B&gclsrc=aw.ds
    Yes, it is possible to take an unbalanced signal and generate a balanced signal from it using op-amps or balanced line driver chip but you're introducing a bucket load of additional electronics that isn't really necessary.
    It's also possible to use a transformer to balance the signal but there are likely to be audible sonic effects.

  10. #20
    Join Date: Oct 2016

    Location: Bolton, England

    Posts: 757
    I'm Andrew.

    Default

    Quote Originally Posted by farflungstar View Post
    That's exactly what I initially thought David. Live to pin 1, return to pin 2, and earth shield to pin 3. But having checked forums no one, it seems, is running it that way - all are using balanced preamps.
    Who's David?

+ Reply to Thread
Page 2 of 5 FirstFirst 1234 ... LastLast



 

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •