Using home receiver amplifier with sound card DAC to drive galvos?
Hi,
New to the forum. First post.
I recently bought a used RGV laser and its been a lot of fun. It's a cheap one that uses iShow for its DAC. It didn't take long though to reach the limits of its capabilities. I've really been wanting to build my own as a sort of side project. I bought a set of 20Kpps galvos and have been wanting to try out a sound card DAC with openlase. My goal is to be able to play mame games with it.
So after wandering through the forum the past few days, it seems pretty clear that most external sound cards work great for these purposes. Only thing is that they require some extra kits for the correction amplifier. I'd rather not buy something if I can just piece things together from what I have. That got me thinking, why wouldn't a regular 7 channel amplifier work? I actually have a nice surround sound system that is just sitting there not being used. I can adjust the gain for each channel. I measured the voltage coming out of the speaker outputs and I get up to 7 Volts at max volume.
Has anybody tried this? Could this work? What possible issues would I have? This would be a whole lot easier and cheaper to just run my soundcard through a receiver I already have then to buy a kit and have to solder a bunch of connections.
Looking forward to following up with this community. I'm pretty new to DIY laser shows but I'm already hooked!
Thanks a lot!
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Originally Posted by Kalmito
