From what I gather these modules are meant for balanced input, and using unbalanced input (by connecting RCA ground to pin 3?) will provide half the gain?
What would be the best way of using these with a RCA input?
Hopefully without needing an additional board like the Ghent RTX module.
What would be the best way of using these with a RCA input?
Hopefully without needing an additional board like the Ghent RTX module.
I have succesfully used a 200ASC with asymmetric (unbalanced) input for at long period. And the gain was not too low for my use. On the contrary I added a voltage divider to lower the signal around 10dB to use my digital volume control with most bits active. A buffer/conversion board is not necessary, unless your source has trouble with an input impedance around 2 kOhms as I remember it. I have a single sheet pdf with some suggestions for connections. I wonder if I can upload it here for you to see?
The key message I guess is this one: "GND pin of J3 is connected to minus input for asymmetric input."
The key message I guess is this one: "GND pin of J3 is connected to minus input for asymmetric input."
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Great to hear! Have you gotten the signal sense to work okey? I read some reports that it's not sensitive enough. I.e shutting down on low volume listening.
Yes, I only had two problems with the signal sense: The first was when I used balanced input with what I assumed was a symmetrical balanced output from a Behringer DCX2496 signal processor. At the time I had connected the negative signal to the sensor pin, but it turned out that only the positive signal cable had any signal. This is described i this thread - I hope that you are able to read danish - HIFI4ALL Forum: ICEpower ASC200 signal sense? Connecting the signal sense pin to the positive signal solved that. At another point I went for a full bi-amping system using to 200ASc's but sometimes no sound came from one of the tweeters. It took me a long time to realize that the speakers were designed so one of the speaker terminals was just for the tweeter and the other was for the midrange/bass together. So the problem was related to the fact that there was very little demand for signal to the tweeters and therefore only the midrange/bass section turned on using signal sense. Going for at single-amp system solved this. I guess you have to own very sensitive speakers to have a potential problem with the amps shutting down because of low level listening.
From what I gather, the signal sense triggers on line level signal strength (not output power draw), so this only makes sense to me if you did some sort of active crossover before the amps where the tweeter signal would typically be lower than the woofer. For passive speakers it shouldn't matter?
