• Connections to balanced and un-balanced inputs. XLR, 1/4", phono

    The illustrations below show the connection between balanced and un-balanced outputs on different connector types (XLR / Cannon, 14", phono/RCA/cinch) to balanced inputs on XLR and 1/4" connectors.

    We are assuming that XLR pin 2 is positive and that the tip of the 1/4" plug is also positive. Check that your devices are not wired differently. 1/4" three-contact connectors are often referred to as TRS (Tip-Ring-Sleeve), as opposed to two-contact TS (Tip-Sleeve) connectors.

    Balanced to balanced

    In case of hum when connecting balanced outputs to balanced inputs, it is common practice to lift (disconnect) the shield (ground) at the input connector.

    Balanced XLR to balanced XLR



    Balanced XLR to balanced 1/4"



    Balanced 1/4" to balanced 1/4"



    Balanced 1/4" to balanced XLR

    Unbalanced to balanced

    In general, to connect an unbalanced source to a balanced input, two of the cable conductors are joined (negative/cold and sleeve).

    Unbalanced XLR to balanced XLR



    Unbalanced XLR to balanced 1/4"



    Unbalanced 1/4" to balanced XLR



    Unbalanced 1/4" to balanced 1/4"



    RCA to balanced XLR



    RCA to balanced 1/4"


    Related »» In-Depth Balanced and unbalanced connections
  • Ad

  • News

    Proel launches WX series stage monitors

    Italian manufacturer Proel has introduced the WX series of compact self-powered stage monitors. According to the brand they have "perfect sound intelligibility, uniform directivity, high SPL and an ultra-compact form factor,... Read more

    Celestion debuts CDX1-1412 compact HF compression driver

    Celestion, suppliers of professional loudspeakers and compression drivers for sound reinforcement applications is pleased to introduce the new CDX1-1412 1” exit, neodymium magnet high frequency... Read more

    New single magnet coaxial speakers from lavoce

    Lavoce Italiana are introducing the first products from their new Common Magnet Coaxials category, starting with a ferrite magnet 8”, and neodymium magnet 12” and 13.5” models, available with or without aluminium... Read more

    EAW launches NTX Series articulated line array

    Eastern Acoustic Works (EAW) has announced its NTX Series line array and SBX Series subwoofer complement.

    EAW’s NTX201L is a powered articulated line array (unlike Anya and Anna's flat hang concept) with an on-board 1600W (peak)... Read more
  • Recent articles

    Intelligibility and its measurement

    1. What is intelligibility?

    The state or quality of being understood. It can apply to an idea or a writing, but in our context it relates to the spoken word and, less commonly, to music.... Read more

    Choosing loudspeaker cable

    The importance of cables for the connection between the amplifier and the speaker is often controversial. Hi-fi aficionados spend fortunes on cables that promise spectacular results, and our short auditory memory and subjectivity lead many to confirm these improvements in their systems.... Read more

    Constant voltage systems (70V, 100V lines)

    Constant voltage, high impedance or line transformer systems are often a somewhat confusing concept for professionals used to rock and roll. They are actually very simple to design, among other things because they are intended to be installed by electricians and the like, with little experience in sound systems. In this article we will try to clarify the simple concepts needed to understand this type of system.... Read more
  • PAcalculate app