Sending IR codes to multiple "identical" amplifier
Posted: Thu Mar 18, 2004 3:34 amThis should be a tricky one.
Let's say I have 3 identical amplifiers that are using the same IR remote control and same codes
I put IR emitters on each of them, BUT, I want to control them SEPARATELY.
In theory I don't think it is possible to do so, but, here is an idea I'd like to pass among you and see if it is good or if there is a better solution.
By the way, the reason I am doing this is to have multi-room/multi-zone amplification done from a central cabinet.
If I send an IR code to increase volume, all three amplifiers will increase volume without discrimination. I want to avoid that.
I thought about using multiple USBUIRT, but it becomes a difficult solution to manage, even within Girder. ie; which signal do you send to which USBUIRT.
The simplest thing I thought about was to use a low-voltage remote controllable switch. I happen to have one of those, which I will test later.
I would cut one wire of the IR emitter for all three of the emitters that go to the amplifiers. Each emitter would be connected to the remote controllable low-voltage switch. All switches are in the "off/open" position. If I want to send an IR code to increase the volume on amp1, I send first an IR code to the switch telling it to close the circuit for the emitter connected to amp1, then I send the IR code to amp1. When it is finished, I re-opened the circuit of emitter1 so that it can't send additional IR codes by mistake.
This way (in theory, I have yet to try this) IR signals are sent only to the emitters that are in closed mode; so you could choose which amplifier to control.
The only issue I see is one of latency. Since the switch operates by relays, it does induces a significant delay to send the command to the proper amp.
That's my idea. Anybody with better and simpler ideas?
Thanks!
Sylvain Dumas
Let's say I have 3 identical amplifiers that are using the same IR remote control and same codes
I put IR emitters on each of them, BUT, I want to control them SEPARATELY.
In theory I don't think it is possible to do so, but, here is an idea I'd like to pass among you and see if it is good or if there is a better solution.
By the way, the reason I am doing this is to have multi-room/multi-zone amplification done from a central cabinet.
If I send an IR code to increase volume, all three amplifiers will increase volume without discrimination. I want to avoid that.
I thought about using multiple USBUIRT, but it becomes a difficult solution to manage, even within Girder. ie; which signal do you send to which USBUIRT.
The simplest thing I thought about was to use a low-voltage remote controllable switch. I happen to have one of those, which I will test later.
I would cut one wire of the IR emitter for all three of the emitters that go to the amplifiers. Each emitter would be connected to the remote controllable low-voltage switch. All switches are in the "off/open" position. If I want to send an IR code to increase the volume on amp1, I send first an IR code to the switch telling it to close the circuit for the emitter connected to amp1, then I send the IR code to amp1. When it is finished, I re-opened the circuit of emitter1 so that it can't send additional IR codes by mistake.
This way (in theory, I have yet to try this) IR signals are sent only to the emitters that are in closed mode; so you could choose which amplifier to control.
The only issue I see is one of latency. Since the switch operates by relays, it does induces a significant delay to send the command to the proper amp.
That's my idea. Anybody with better and simpler ideas?
Thanks!
Sylvain Dumas