F-Amp Question

**puppycrack** · 01-16-2021, 07:20 PM

This seems like a stupid question, but I can't seem to find the answer anywhere. Does an F-Amp need power (V+) to work properly? Or can I run only V- and data through it when doing power injection? I have some props that will be some distance from the controller, and am planning on locating power close to the props.

Thanks,
- pc

**TSL** · 01-16-2021, 07:44 PM

How far from the controller? And yes it needs v+

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**puppycrack** · 01-16-2021, 07:50 PM

Thank you. I'm still in the planning stages, but could go as far as 40'. I have some diff receivers, but in one case, it would only be one string located a distance away, and it seemed a waste to have a diff receiver for only one string.

I suppose if I run V+ from controller, along w/ V- and data (in order to use the F-amp), I could still inject the prop as I was planning, with almost no V+ from the controller being used. Does that sound right?

**MartinMueller2003** · 01-16-2021, 08:15 PM

Yes the famp needs V+

**TomL8345** · 01-16-2021, 11:10 PM

You can run the V+ to the F-Amp and not bring it out.

**TSL** · 01-16-2021, 11:12 PM

Originally Posted by puppycrack

Thank you. I'm still in the planning stages, but could go as far as 40'. I have some diff receivers, but in one case, it would only be one string located a distance away, and it seemed a waste to have a diff receiver for only one string.

I suppose if I run V+ from controller, along w/ V- and data (in order to use the F-amp), I could still inject the prop as I was planning, with almost no V+ from the controller being used. Does that sound right?

I know you can get 25’ from the controller to the 1st pixel. My longest run. Have you tried it to see if you need a f-amp? I use f-amps when I have a distance from pixel to pixel.

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