Adapter cable 2 x TRS to 2 x RCA / 3.3ft / 1m / black - audio jack to cinch - showking

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The second "stereo" adapter is an unknown. It may be designed as an adapter to send a mono RCA signal to both stereo channels of a stereo TRS input. In that case the tip and ring would be connected together. If it's wired that way it won't work as a mono TRS to RCA adapter when connected to a balanced output. It may be wired with the Ring open. If so it will work as well as as TS adapter when connected to a impedance balanced output, but not at all if connected to a transformer balanced output. When connecting audio equipment, it is important to understand the differences between various types of 'inputs' and 'outputs'. It is especially important to understand differences in electrical specifications. Connecting gear without proper electrical considerations could degrade the system's performance, or even damage the equipment. This article will discuss the necessary considerations of connecting balanced and unbalanced connections (e.g., XLR-to-RCA). Now the thing is that pins 2 & 3 in a balanced arrangement, never have a potential with respect to ground, just each other. There are three types of balanced outputs: 'impedance balanced', 'transformer balanced', and 'active balanced'. Each type of balanced output requires different considerations when connecting to an unbalanced load. With each case discussed, we will assume that 2-conductor (unbalanced) wire is being used, as 3-conductor wire will offer no advantages when driving unbalanced loads. A more sophisticated connection may be needed for aggressive common-mode rejection, which may require modifying the equipment. For information about this type of setup, refer to the "Shield Wires" section (5.4) of The Clean Audio Installation Guide.

Devices with impedance-balanced outputs actively drive the hot output only. The cold output is tied to ground via a resistor that matches (or balances) the output impedance of the hot signal conductor. In other words, there is no audio signal on the cold conductor, but, in a full balanced system, common-mode rejection will be maintained since the impedance is balanced between the two conductors.For XLR connectors, pin-2 is the hot conductor, pin-3 is the cold conductor, and pin-1 is the shield conductor. The best one from a technical standpoint: retrofitting a XLR differential input to a legacy equipment The maximum length for an RCA cable is limited by the cable capacitance, the source impedance, and the amount of induced noise. 12 feet is a common upper boundary for pre-made cables but I've built my own cables in the 20-some foot length." The way we've got round this on a PA installation I operate is to use unbalanced auxiliary outputs to drive the power amp. The main outputs on our mixer (a Yamaha MX12/4) are balanced XLRs so we use two of the unbalanced 1/4" group outputs to drive the (stereo) power amp, along with some careful selection of signal routing to get the correct signal out.

So I would go ahead and do it the way you intended. If there is no hum or buzz, then you are fine. If there is then you should formally float the line as I described. Note how the TRS side is only connected with Tip and Sleeve while RCA side is not using the shield.Pin 1 (sleeve/screen) is always ground. Pin 2 (tip) is always the positive deflection. Pin 3 (ring) is the negative deflection, So if you ever reverse pins 2 and 3 you create an out of phase condition. If the receiver is made differential, i.e. it only cares about the difference between the two signal conductors (XLR pins 2 and 3 or hot and cold), the "dirty work" is offloaded to shield (or XLR pin1) conductor. As long as those are not connected to the PCB on either transmitter or receiver side (which causes so called Pin1 problem) but rather diverted to the Protective Earth mains conductor, this makes for a hum-free connection.