I have a dual boot computer, and each OS must use a different
audio interface (Can't get Linux to see my Studio 18/10).
I'd like to just combine the stereo outs from each to go
into the amplifier.

I tried an old mechanical A/B switch from Radio Shack, but
for some reason it picked up just enough noise to be unusable.
It was also more annoying than you might think to reach over
and flip the switch!

So I was wondering how a passive mixer might work. I saw
this online:

INPUT 1 -------\/\/\/\---+
---+ R1 10K +------------ OUTPUT
| | +----
INPUT 2 -------\/\/\/\---+ |
---+ R2 10K |
| (shields) |
+---------------------+

Will that do it? I have plenty of volume to spare, but
I was curious about how much attenuation I'd experience.
Is there a product that essentially does the same thing?
I don't even really need volume controls.


Thanks

--- SoupGate-Win32 v1.05
* Origin: fsxNet Usenet Gateway (21:1/5)

On 21/11/2021 21:25, Tobiah wrote:

Also, I noticed that on the back of my Denon power amp, each channel has
two
RCS inputs, one labeled 'CD', and the other 'Normal'. I assume that it
would
be a bad idea to try to utilize both at the same time, but I'm not
completely
sure.

Check the circuit. The CD input will probably be designed to accept the
usual digital 1 Volt input, while the normal *should* be 0.775 V at 600
ohm impedance (0dB Reference voltage for pro gear), but for domestic
gear, this will be a lower voltage.

This could be either active or passive attenuation. Either way, you
won't do any physical damage

--
Tciao for Now!

John.

--- SoupGate-Win32 v1.05
* Origin: fsxNet Usenet Gateway (21:1/5)

On 21/11/2021 21:17, Tobiah wrote:

I have a dual boot computer, and each OS must use a different
audio interface (Can't get Linux to see my Studio 18/10).
I'd like to just combine the stereo outs from each to go
into the amplifier.

I tried an old mechanical A/B switch from Radio Shack, but
for some reason it picked up just enough noise to be unusable.
It was also more annoying than you might think to reach over
and flip the switch!

So I was wondering how a passive mixer might work. I saw
this online:

INPUT 1 -------\/\/\/\---+
---+ R1 10K +------------ OUTPUT
| | +----
INPUT 2 -------\/\/\/\---+ |
---+ R2 10K |
| (shields) |
+---------------------+

Will that do it? I have plenty of volume to spare, but
I was curious about how much attenuation I'd experience.
Is there a product that essentially does the same thing?
I don't even really need volume controls.

The attenuation will depend on the load and source impedances.

--
Tciao for Now!

John.

--- SoupGate-Win32 v1.05
* Origin: fsxNet Usenet Gateway (21:1/5)

Also, I noticed that on the back of my Denon power amp, each channel has two RCS inputs, one labeled 'CD', and the other 'Normal'. I assume that it would be a bad idea to try to utilize both at the same time, but I'm not completely sure.

--- SoupGate-Win32 v1.05
* Origin: fsxNet Usenet Gateway (21:1/5)

John Williamson wrote:
====================

Check the circuit. The CD input will probably be designed to accept the
usual digital 1 Volt input,

** CD & DVD players output up to 2V rms.

while the normal *should* be 0.775 V at 600
ohm impedance (0dB Reference voltage for pro gear), but for domestic
gear, this will be a lower voltage.

** 250mV is about normal sensitivity for tuners and cassette players.


...... Phil

--- SoupGate-Win32 v1.05
* Origin: fsxNet Usenet Gateway (21:1/5)

In article <sned0j$2c8$[email protected]>, Tobiah <[email protected]> wrote:

I tried an old mechanical A/B switch from Radio Shack, but
for some reason it picked up just enough noise to be unusable.
It was also more annoying than you might think to reach over
and flip the switch!

This is likely because when you connected the two devices to the same
ground, you created a ground loop.

A passive mixer will create the same ground loop. So figure out your
grounding first.
--scott
--
"C'est un Nagra. C'est suisse, et tres, tres precis."

--- SoupGate-Win32 v1.05
* Origin: fsxNet Usenet Gateway (21:1/5)

Holy Crap! A thread that reads like the good old r.a.p. newsgroup!

Yay!

Regards,

Ty Ford

--- SoupGate-Win32 v1.05
* Origin: fsxNet Usenet Gateway (21:1/5)

Ty Ford <[email protected]> wrote:

Holy Crap! A thread that reads like the good old r.a.p. newsgroup!

Yay!

Usenet is alive.

--- SoupGate-Win32 v1.05
* Origin: fsxNet Usenet Gateway (21:1/5)