In response to the kind reply to my earlier query by Ivan Salazar, today the Sennheiser headphone cable arrived and thus I have been able to connect up my test rig.
It works just fine, but I am wondering; as I am only able to take the output from either the left or the right channel, is it possible to safely combine these from my ASUS Xonar Essence STX Sound Card into a single mono output, please?
There are numerous videos on YouTube demonstrating the use of fairly lower powered transistors used to combine the + output from both sources into a single mono plug, but they generally are being deployed from low power ouputs such as an iPhone.
Is the procedure acceptable bearing in mind my aim is not for listening but purely as a driver, and if so should I use say two a 2-gang rotary potentiometer?
If this would seem to be acceptable bearing in mind the power output of the Zonar Sound Card, what value potentiometer might you suggest please?
Thank you so very much.
Christopher
ASUS Xonar Essence STX Sound Card.
- · Output Signal-to-Noise Ratio (A-Weighted):
124dB for Front-out,117dB for Headphone-out (600ohms) dB
Input Signal-to-Noise Ratio (A-Weighted):
118 dB
Output THD+N at 1kHz:
0.0003% (-110dB) for Front-out, 0.001% (-100dB) for Headphone-out
Input THD+N at 1kHz:
0.0002% (-113dB) for Line-in
Frequency Response (-3dB, 24-bit/192kHz input):
<10Hz to 90KHz
Output/Input Full-Scale Voltage
2 Vrms (5.65 Vp-p) - · Bus Compatibility
PCI Express:
-PCI Express Rev. specification compatible
-Compatible with X1, X4, X8, X16 PCI Express slots
- · Main Chipset
Audio Processor:
ASUS AV100 High-Definition Sound Processor (Max. 192KHz/24bit)
24-bit D-A Converter of Digital Sources:
Texas Instruments PCM1792A*1 for Front-Out (127dB SNR, Max. 192kHz/24bit)
24-bit A-D Converter for Analog Inputs:
Cirrus-Logic CS5381* 1 (120dB SNR, Max. 192kHz/24bit)
High Fidelity Headphone Amplifier:
Texas Instruments 6120A2*1 (120dB SNR, 100dB THD+N @ Vcc±12V, RL=600Ω, f=1kHz)
