I saw those Opalum speakers, linked above, at CEDIA, a few years back. Striking look. You could fly those, or corner mount them, I think, if the designer doesn't jump at the ebtb, or you can't get them easily.

No furniture whatsoever in that gym, to hide a sub?

I looked at the Opalum and think they look cool, but in the end they're still just a box.

Client replied this morning and likes the looks of the EBTB Venus Mk3 which I think is my favorite too: [Link: ebtb.eu]

Waiting on the designer to chime in and need to check in with the manufacturer about availability and how the mounting works.  They were prompt to respond to an initial email inquiry.

 

My only issue with those is wire concealment. To me, being very AR, is the wire will be distracting to the sleek look.

Very interested in your final installed solution.

Yes, first question from the client was "where do the wires go and how will they look".  My first thought is to dress the wires up with Techflex so they at least look high-tech.

[Link: ebtb.eu]

These ones seemed to have a better path.

As much as I despise Bose, I have always had a hankering to hang a pair of 901's, I guess just to say I did. I have never even heard them, just a visual memory I have had from a time gone by.

That model only has a 4" low freq driver so I don't think it's going to sound very good without a sub.

I had a pair of Bose 802 speakers back in the 80s,  They are basically 901's in a road case.  It's easy to get sentimental about them because they were cool at the time and I listened to my first CDs on those speakers (for endless hours).  Reality is they weren't very good speakers except for the bragging rights over my buddies that had big Cerwin Vega speakers (which actually sounded better).

Neurorad - Yeah, really no way to put a sub in the room.  No usable wall space, no furniture and only a few pieces of exercise equipment but nothing I can conceal a sub with.  

In wall sub?

Hi Fred, no opportunity for an in-wall sub.  Room is a concrete box (walls, ceiling & floor).  One wall is a living plant wall, one wall is mirrored over 3/4" ply attached directly to the concrete and the other two walls are going to be padded fabric (but not acoustically transparent fabric) and have less than 2" of depth.  The floor and ceiling are post-tensioned so I can't cut into them enough to recess anything and the floors also have radiant heat that can't be damaged.

My only option really is a surface mount speaker that has to be attached to the ceiling and it has to look cool... really cool.

To give everyone a better idea of decor, here's a link to an acrylic chair that will be in a different room, but the entire level of this home is ultra modern... described by the designer as "almost like being in the International Space Station, but surrounded by luxury items instead of instruments and wires and the vacumm of space".

[Link: rousseau.co.uk]

There's also a wine cellar where the floor, walls, ceilings and wine racks are all glass and acrylic back lit and edge lit with RGB LED.

This is the same job where I'm automating a 13' recording studio desk to retract when the screen comes down to turn the room into a media room.  There's also an indoor climbing wall and I'm working on a way to automatically deploy and retract a floor mat.

 

On the walls that are going to be padded fabric can you build out the wall and then pad it.

If you need the wall to look like concrete talk to the folks at Universal Studios, what they did to the walls on the Transformers attraction while you wait in line is amazing. You swear that place is solid concrete, no matter how close you get and touch it. Its only until you knock on it with your knuckles you know its not concrete.

What if you incorporated some of these into your padded wall
[Link: magnepan.com]

There are going to be acoustic fabric walls in many of the other rooms, but the fabric walls in the gym are leather or suede so there's not going to be any way to get sound through them.  The walls can't be furred out because that would throw off symmetry with doors, windows, ceiling treatments and I'm sure a bunch of other things that have already been designed.

Is any of the exercise equipment big enough, like a multi station unit to mount a sub to the top of or inside that?

Sorry my AR OCD self wants to find a solution. That much money put into that room and no bass, a cryin shame.

If it makes you feel better, the client's won't be spending a lot of time in this room.

Aside from the gym there's additional fitness areas (indoor climbing room, spa, hot yoga room, sauna, deprivation tank, cryotherapy chamber, meditation room) and also extensive outdoor fitness areas setup for CrossFit activities.

We've got great sound in other rooms where the client's spend a lot of time.

Bingo
[Link: soundsphere.com]

Good find, but I think it's still a little to big to hang and I'm really limited to the two corner mount locations.  The ceiling is going to be covered by back lit LED panels for room lighting so I don't even really have the opportunity to hang anything out in the room.

Hang the sub below 1 of the 2 speakers.

They may have a bin for used (and/or fresh) towels. Build it custom with a sub below.