15 foot RCA cables out of TT with no pre amp?


Im very limited with the space I have. This is kinda limiting me to keep the turntable on a 15’ cable. I’m using a Pro-ject Carbon Debut Evo with an Ortofon  2m blue to an Onkyo stereo with a phono input. Cables are midrange, nothing special but not total crap. Just wanted to get some opinions or suggestions on this. How bad the loss is gonna be if there is any. 
jacquesbarteaux
Cables are midrange, nothing special but not total crap. Just wanted to get some opinions or suggestions on this. How bad the loss is gonna be if there is any.
@lewm seems like OP already installed it and ask for opinions.
@lewm The TT is being shipped over now. Along with a Pro-ject phono box II. I wanted something to ground the connection, and by suggestion of the chat here; give the signal a little boost to the receiver. I’ve had the cables sitting there for a while, but now that I can see the pre-amp will take off at least 3 feet, i’ll most likely get a shorter cable!
Also, the post regarding the 22 foot cable was not me. Seeing how even 3 feet can make such a difference, I wanted to double check if subtracting 7 feet from that would make a barely noticeable difference or not.