Just finished renovating our living room and got a new C9 55". I'm planning to build a set of mains this spring, along with a custom Volt 6 center. This will be my first build (really my first "proper" speaker system).
I can't put a center on top of the console under the tv, because it's a mid-century Lane chest, and the top needs to be able to flip open for storage. To that end, the tv will be wall mounted with the center speaker flush against the top edge of the screen using an adjustable-depth soundbar bracket (Aeon-90200). I've wired power, coax, cat6, and speaker wire for the center, along with pvc conduit for the hdmi all behind the tv... and behind the cabinet/chest underneath is another receptacle with cat6, 3x rca for the front sub and stereo aux return (echo dot), plus the LR speaker wires. All the wiring and conduit goes under the floor through the basement and back up into a dedicated tech/media closet which is underneath the stairwell.
My design for the Volt-6 center is inspired by the one posted by aron7awol. The outer dimensions will be 7h x 5.75d x 24w, which is just about the minimum depth and height for the Volt 6.
I can't keep it front ported since the enclosure will only be 4.5" deep on the inside and the 1.5"x4" ports would not have quite enough clearance. So, I'll likely put the ports on each side or else on the bottom.
I was originally planning to making all three Volt-6 in the front just to match, but the LR mains can be a bit larger which is leading me to consider other options. I like the concept of the HT-8 for voicing with the Volt-6 center, but the 16.75"x 12.5" baffle is just too big (I do wish the Fusion-6 or HT/HTM-6 were still around). So, I'm debating between the ported Volt-8, and the Cobalt 8 MT since they both are 10x14 which is the perfect size.
goals & configuration details:
- 70% movies/tv, 30% music
- We watch tv at around/under 60db, but sometimes for movies and shows we'll crank up to 75db baseline @ 8ft (according to a db meter app on my phone)
- The room is 14.5' x 15' and 9'3" ceiling height. The side to the left is open to the dining room which is 17x18 and to the right the room has 45 degree corners (4ft wide) for double-hung windows with very large picture/transom window in between (kind of shaped like a bay window set, but it's the whole side of the room). We'll have floor to ceiling velvet curtains drawn to the sides of each of the windows.
- MLPs are both off axis, and since this is more of a family/living room there is no seat in the middle... so off-axis response is one of my biggest concerns and why I'm going with a coaxial for the center instead of horizontal mtm (trying to avoid any lobing issues)
- LRs will be on stands on each side of the tv probably 10in or less from the wall
- The AVR will be a Denon x3500h, so I can use XT32
- I'll be building two sealed subwoofers probably with the Dayton DCS255-4 (10"), but only after the LCR are all done.
All else being equal, I'm slightly leaning towards building the Cobalts since I expect that the dome tweeter will probably have a smoother and more musical response than the CD, plus according to specs they have a little more bass extension than the Volts (60hz vs 65hz) and are still high enough sensitivity for avr power... but I'm a little concerned about voicing differences especially between the dome tweeters and the compression driver on the center.
My gut feeling is that the Cobalts will be a step up from the Volts, and that after running eq/xt32 it probably will blend with the center just fine, but there's not much in the way of comparison to go off (only 2 builds I can find: ghart999 and ratm), and to be honest I just haven't heard any higher-end home theater systems let alone any diy speakers to have a point of reference here.
How different sounding are the Cobalts from the Volts? Has anybody heard both sets to compare? Maybe I'm just looking for validation that the Cobalt LR and a Volt Center will sound fine together. I'd also welcome any other feedback/criticism of my plan so far! Sorry that this is my first post on avsforum, I can't post any pics of the floorplan/room or the sketchup drawings for the center just yet, but I'll be happy to as soon as I hit the required 5 posts!