Should you tune room to headphones

Blue,

Good headphone sound is certainly a useful reference.

Different headphones/lines still still tend to have different sound and tonal balance as well. So there is no absolute reference even there.

Room acoustics can certainly be a challenge getting a speaker setup to sound like phones. Phones take the room acoustics out of the equation.

With the bottom ported OHMs, floor construction can have a big effect on how bass sounds in particular. More floor interaction with more resonant types of flooring will be harder to get to sound like phones with no room acoustics.

Lots of ways to tweak a setup in a room, especially if many modular treatments are in use. More or less might be better. Other tweaks as well like speaker placement, toe-in/out.

Sounds like one of those situations where you just keep on tweaking towards the reference sound you like best until you zero in on the target.

I'm hoping for a pair of phones that might convince me to ditch all the big expensive gear once and for all, but has not happened yet, and I've heard most of the usual top contenders these days plus many a vintage classic along the way.

I have 4 pair currently: STAX, Sennheiser, Klipsch, Audio Technica. All are nice, very detailed, balanced, good dynamics, lots of fun and enjoyable, but can't touch my big rig in terms of sounding real.

How do I know? I can listen for hours on my big rig until I force myself to stop. Headphones fill the bill for awhile but I am always ready to take them off a lot sooner.

Very good for hearing purely what is in any particular recording though. Knowing how different recordings sound in headphones can be a help when it comes time to assess system sound quality because there is so much variability alone just in how various recordings are produced and sound. Think of phones as "monitors". Speakers are needed to communicate the whole deal properly.

Blue,

Your 5000s have teh 4 3 way level adjustments on each speaker.

Setting room size to small and location to free (for lowest low and mid bass levels) might bring the tonal balance to be more like the Grado phones with less bass. I tend to run my 5s with low bass levels by preference, despite being on solid concrete foundation floor. Too much bass can mask midrange detail and probably be further from the Grado sound.

18" to walls might be a tad close, even with treatments. Of course, if you move them out further, the bass level adjustments on the 5000 can be upped if needed to compensate. Each level on the controls adds/subtracts 3 db to the target frequency range. Very useful for helping adjust to room acoustics and something that cannot be done with most speakers these days.

Blue,

Here is approach I would recommend to get everything in order.

Good hEadphones like better Grados are a good reference for what is in a recording to hear, ie essentially detail. Each has their own sound though in regards to detail, tonality, distortion at various levels, etc.

I've heard your Grados once recently. My recollection is that they are very revealing through the midrange in particular being just a touch towards the brighter side of many phones, and also very good detail, and smooth.

My OHM 5s, similar to your 5000s are set up to sound quite similar. So it can be done.

The problem is room acoustics. Unlike phones, every room impacts its own sound to some degree. Getting that under control is the first essential.

WIth any speakers, including OHM omnis, getting focused soundstage and imaging is mission one. That requires assessing the room acoustics, liveliness and levels of reflected sound, and then placing speakers and/or treating accordingly.

Large speakers including OHM usually require some distance to walls to achieve best results.

Regarding wall treatments, the same strategy applies to OMNIs as more directional speakers, ie treat primary reflection points first and go from there as/if needed. The difference with omnis is you have to determine where you will be listening from in order to identify primary reflection points, where as with directional speakers there is only a single sweet spot to choose from.

After this, enough space to walls to avoid early reflections is key. I'd shoot or 2-3 feet or perhaps a tad more depending in a room that size.

Then of course, electronics, ICs etc. come into play as well. But you have good stuff, so I woudl not be concerned about that. Focus on optimizing the setup.

If you can do it with the OHMs, you will be in a place that is hard to beat. The key though is to do it. We all know that can take some time, but having a reference sound to shoot for helps. You gotta know the target before you can hit it.

The soundstage and imaging of live speakers is what headphones will never deliver. ITs what makes teh difference between listening to a recording and possibly getting the emotional involvement with the music that one might get at a live event.

Blue,

Also keep in mind that wall treatments affect soundstage and imaging as well. They reduce the levels of reflected sound at the higher frequencies, which is often what is needed to some extent. Lower levels of reflected sound is also what one gets by moving speakers further away from walls, so both can be applied to achieve similar results in regards to soundstage width or depth as needed. However, early reflections are always bad, even at low levels, so some distance between drivers and walls is always a must with any speakers in order to get the best imaging results. Its the imaging and soundstage that makes speakers in a room special. THe rest can be pretty much had for much less with a good set of headphones