Poor bass and treble.

When i got the new receiver? No. But I have tried moving it since to try and get better results. It’s currently about 12 ft from my favorite place to sit. 

The sub volume and crossover knobs are at max. The Only EQ options this receiver has are for one speaker at a time (and not the sub). So it doesn’t really help boost the sub what-so-ever. I don’t think it has any room correction feature either. It does have a menu where you I put the distance from each speaker, which I have done. The is a “extra bass” option, but that doesn’t fix everything. We still don’t seem to have bass in a lot of places we’d like to hear it. Then it seems kind of one note. Like I’m Always getting a hum when I need a boom or a rumble. Rock music sounds like you’re watching MTV on standard TV speakers.

sometimes it sounds better to turn the sub off, and let my Klipsch floorstanders do all the bass, but even that, not nearly as good as it should.

Ps by EQ options I assume you mean the sliders for various frequency ranges. I do have things like “DTS: Music” but I usually keep it on “STRAIGHT”

go Ahead and say it... R T F M!
ill give it a try when I get home and let you know how it goes

Didn't work. Base is still mild at best.

I dont remember the model, but it was a yamaha as well, the v377 is nearly identical with HDMI 1.4 ports.  the v377 is two years old at this point. was brand new to me though.  I dont use the subwoofer passthrough, i use the subwoof out from the receiver. 

Sorry I haven’t replied in a few days. I’ve been trying hat process periodically for a couple years. I don’t see any option to adjust ohms in the setup. How do I ultimately rule out this being a poor receiver? It seems improbable that it would take this much tinkering to make this >$2000 set of speakers sound better than my $50 headphones, or the stock speakers in my car.

but on the other hand, I’d hate to waste money on a new receiver and still have lack-luster results. 

After trying anything I found in the manual, I tried using the subwoofer pass-through instead of my receiver’s subwoofer output  (for the science.) The result is a VAST improvement. 

I took a look over some other threads. Seems to be quite a few Yamaha owners with several different models with weak sub outputs. Wonder if it effects amp pre-outs as well.