basically i have a sony headunit with the aux input on the back. I have an ipod and a satellite radio. basically im trying to use a toggle switch and relays to break the signal from one source and apply signal from the other. Ive done this before years ago, and had a pretty good diagram showing how it is done.

any of you guru's able to give any insight?

 

If you are up to the task, and have the time to solder you should have no problem, A relay is just a electric switch.

 

I know it's not as fancy, but you accomplish the exact same thing by using a headphone jack splitter "y" adapter and turning one device off...

Introducing relays and power is just asking for noise... Although not likely, it's possible.

I know Best Buy has the splitters for $5. Sounds a lot better to me than x number of relays, a switch, and who knows how many hours of your time.

 

sony used to make a piece that plugged into the unilink port on the back to provide a basic aux in for decks without it . you could use that in conjuction with the aux it already has and have two inputs

 

The simple way to do it would be to use a DPDT switch. Hook up the right/left input to the common terminals on the switch, and then you have 2 sides left over to hook up your 2 sources. This would be better than a y-adapter as you wouldn't have to worry about frying the output stage of the sources if they are accidentally both on at once. And it would be cheaper and simpler than a relay.

I don't see how a relay would introduce noise into the system. Magnetic field from the coil? Not very likely. If the relay would be placed in the same place as a y-adapter, they are both equally likely to pick up external noise.

B18C_EJ8: Hooking up a relay to a switch does not take many hours. Well, maybe for some people who have no idea what they are doing.

 

Why dont you use two op-amps?

Use a switch to select which amp gets power.

You could later expand ont this and make it auto sense.

 

ok, and where is he gonna get a dual supply for the op amps from? Or he could run it on a single supply with a bunch of dc blocking caps in the signal path. [sarcasm]I'm sure this solution would intorduce much less noise than a simple DPDT switch.[/sarcasm]

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 02 accord &raquo;</TD></TR><TR><TD CLASS="quote">ok, and where is he gonna get a dual supply for the op amps from? Or he could run it on a single supply with a bunch of dc blocking caps in the signal path. [sarcasm]I'm sure this solution would intorduce much less noise than a simple DPDT switch.[/sarcasm]</TD></TR></TABLE>

[sarcasm] duh [/sarcasm]

while were at it why dont we hook a light switch up to the remote wire.

Or just buy one http://www.autotoys.com/x/cust...age=1


Modified by nsxxtreme at 12:25 AM 5/16/2006