Simple Line Mixer

[SanchoP]

I'm trying to do this.

The main part of which is:

Building the circuit
To build this circuit you need three RCA connectors and two 10 kohm resistors (R1 and R2). The resistors connect the audio signals (center connector) from inputs together to from one output signal. You can see the wiring details in the figure below:

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

When you have connected the audio lines together using the resistors, then connect the connect the connector grounds directly together using short piece of wire. Now you have made a nice one channel mixer circuit which can mix together two line level audio signal sources.

Component list
R1 10 kohm resistor (0.25W)
R2 10 kohm resistor (0.25W)
INPUT1 Female RCA connector
INPUT2 Female RCA connector
OUTPUT Male RCA connector

I've got the necessary audio cables, but each one has three cables in it. +, - and ground? I don't have a clue about audio stuff or electronics, so you could someone please give me some pointers. Thanks.


EDIT: 1000 posts + Grandmaster!!

 

[mh348]

Why don't you just buy a audio switching hub, Esquire has one for R69 ex vat, You can Probably get it from a Computer Store for around R90

Esquire Stk#: 172851


Specs

 

[mh348]

Congrats on becoming a GrandMaster

 

[werner]

I'm trying to do this.

The main part of which is:


I've got the necessary audio cables, but each one has three cables in it. +, - and ground? I don't have a clue about audio stuff or electronics, so you could someone please give me some pointers. Thanks.


EDIT: 1000 posts + Grandmaster!!

that doesnt sound like bog standard audio, more likely balanced audio cables, in which case this circuit wont work
balanced is a bit more high end
http://www.mediacollege.com/audio/balanced/cable-balanced.html

 

[SanchoP]

The cables I have are standard 3.5mm jack cables, the same as on earphones etc. Thanks mh348, I'll have a look at that, but first I want to see if I can get this working, since I bought the cables and stripped them already...