Stereo to Mono Audio Adapter
author: ziggy
2 layer board of 0.49 x 0.50 inches (12.4 x 12.7 mm)
Uploaded:
March 03, 2018
Shared:
March 04, 2018
Total Price:
$1.20
Stereo to Mono Audio Adapter
Note, the web address on the PCB is no longer valid. The article that this is based off of has moved and can be found at the following address.
https://www.ranecommercial.com/legacy/note109.html
See Figure 2 from the above link. This takes a stereo audio signal and sums it to a mono output. Read the above linked page for more info.
TRS = Tip, Ring, Sleeve. T is the LEFT channel and R is the RIGHT channel (although it really doesn’t matter since you’re summing them). S is GROUND. All resistors are 0805 size. Use either mono output, they are both the same (or use both for a dual mono output).
R1/R2: 475 ohm, 1% tolerance R3: 20 k ohm, 1% tolerance
Use shielded cable for inputs/outputs for best results.
Stereo to Mono Audio Adapter
Note, the web address on the PCB is no longer valid. The article that this is based off of has moved and can be found at the following address.
https://www.ranecommercial.com/legacy/note109.html
See Figure 2 from the above link. This takes a stereo audio signal and sums it to a mono output. Read the above linked page for more info.
TRS = Tip, Ring, Sleeve. T is the LEFT channel and R is the RIGHT channel (although it really doesn’t matter since you’re summing them). S is GROUND. All resistors are 0805 size. Use either mono output, they are both the same (or use both for a dual mono output).
R1/R2: 475 ohm, 1% tolerance R3: 20 k ohm, 1% tolerance
Use shielded cable for inputs/outputs for best results.
