I use adapters like this from time to time.
This Dual RCA to 1/4 in TRS adapter is made to connect a stereo cable with phono plugs to a stereo phone jack.
hosatech.com
Hello
@nagster,
I agree with you; this type of TRS(stereo)-to-RCA(stereo) adaptor could be another nice and safe option for our current issue (TRS[balanced]-to-RCA[unbalanced]) in DM7, but I believe this is
OK only for rather advanced/expert audiophile people who can well understand "what I am doing with this type of adaptor in DM7".
Even though I too have been awaring of this type of adaptor for DM7 from the very first day (July 12) of this thread, I have been all the way hesitating about sharing it here in this thread; the reason(s) for my hesitation will be described soon in this post.
Well, I actually have four of very rigid durable this type adaptor which is
DAP AUDIO Stereo XGA-18;
https://www.highlite.com/en/xga18-xga18-jack-m-stereo-to-2x-rca-f.html
As everybody easily guess and understand, and as I shared
here, I usually use this adaptor for conversion of
stereo headphone out to
L&R RCA out. Many times, and again today, I did confirmed/validated the pin connections by using my handy electric/electronic tester.
Even though
quite unusual application, in case if we would use this adaptor for TRS balanced out of DM7;
Case-A: we can get only the plus(+) signal of balanced line from
white-RCA-L plug with minus(-) signal line floated (non-connected)
[Case-B: we can get only the minus(-) signal of the balanced line from red-RCA-R plug with plus(+) signal line floated (non-connected)]
as you suggested.
The
Case-A, therefore,
should be our favorable option for TRS(balanced)-to-RCA(unbalanced) conversion for DM7, losing 6dB gain though.
In this unusual application,
we should never use white RCA plug and red RCA plug together/simultaneously! We should use only the White RCA plug, we definitely should not use the Red RCA plug!
I have been rather hesitating about sharing above info in this thread since this option should bring much confusions and misunderstandings for naive/beginner people in audio scene.
Please imagine; if such a naive/beginner person would connect two RCA cables simultaneously to the adaptor and feed both of the signals into L&R RCA input terminals of one stereo amplifier, what would happen? The L speaker plays only the plus(+) signal of the balance line, and the R speaker plays only the reversed minus(-) signal of the balance line, hence L & R in complete out of phase but sing the same channel/music! This should be an extraordinary big trouble for the naive beginners, and, much worse that they would be highly possible being unable to find and solve "what is wrong here".
Consequently, let me emphasize again;
this option is OK only for rather advanced/expert audiophile people who can well understand "what I am doing with this type of adaptor(s) in DM7".