Layout B-1

Windows behind your head

The same ≈280–420 Hz back-wall cancellation as Layout A, but the surface behind the headrest is Window 1 / Window 2 glass. Covering the windows is fine, so a 4″+ absorber mounted over W1 and W2 behind the headrest handles it — standing off the 2″ sills. The A/C duct panel takes the bottom ≈5″ of W1, so the panel there stops above it; W2 can be covered all the way down.

Side-wall reflections

First reflections land ≈55–63″ from the north wall with the 65″ (≈53–62″ with the 77″/83″) — ranges that cover both reclined and upright seating, which is what the green bands on the plan span, so they hold still when you click the chair. On the east that's drywall; on the west it's the shut south door leaf — 2 × 5 glass lites. Since that leaf stays closed, a panel can hang over it, but untreated the two sides won't match.

Front-wall cancellation

With speaker fronts 28″ off the north wall, the reflection off that wall cancels a band around ≈120 Hz — above a typical 80 Hz sub crossover, so EQ can't fill it. Thick (4–6″) absorption on the north wall behind each speaker makes it shallower; measure before settling on the crossover.

Room modes

Front-to-back is now the 130″ dimension: the MLP sits on the peak of the 52 / 104 / 156 Hz modes, close to the 56 Hz height mode. Across the 158″ width, the centered MLP is in the 43 Hz null and on the 86 Hz peak.

Bookshelf behind the west LS50

The NW bookshelf sits ≈4–5″ from the west LS50, while the east side has open wall — so the west side will run bassier. Options: plug the west LS50's port, move the bookshelf, or measure and let room correction even out the sides.

Output at the MLP

At ≈8.1–8.5 ft instead of ≈9.5 ft, both pairs play ≈1–2 dB louder than Layout A for the same amp power, with wider stereo angles (≈48–52° LS50 outside, ≈37–42° Q3 inside).

Screen glare

The screen faces all three south windows and their transoms. Blinds and transom shades help; panels over the windows would remove the glare entirely, at the cost of daylight.

East side furniture

The 28″ bookshelf fills the NE corner. Below it on the east wall, north to south: an 84″ bookshelf centered in the 27″ bay (29⅝–53⅜″ from the north wall, back to the wall), the sub centered in front of it (34–49″), the 58″ × 28″ desk facing west (55–113″), and a file cabinet in the SE corner, drawers west (113–128″). The desk sits ≈1⅞″ off the wall with the cabinet out on the same plane, their fronts ≈29⅞″ off the east wall. The sub sits back from that plane at ≈10¾″ off the east wall — 3⅜″ behind the desk front, with its back reaching 1⅛″ into the bookshelf. The run stops 2″ short of the south wall so the cabinet clears W3’s sill. Seated at the desk there’s ≈22″ to the recliner’s east side table. The east-wall reflection band (≈53–63″) clips the bookshelf’s south end by ≈⅜″ and otherwise falls over the desk, below ear height, so a panel there still works.

The 84″ bookshelf is 23⅝″ wide × 11⅞″ deep, with ≈1⅔″ to the NE bookshelf and to the desk on either side. The sub’s back reaches 1⅛″ into it — a notch that deep and ≈16″ wide in the front edge of the bottom shelf clears it, and the shelf goes on tying all four legs, so nothing structural is given up. The sub stands 14⅝″ proud of the bookshelf face and covers 15″ of its 23⅝″ width at the bottom, leaving ≈4⅜″ open each side. It covers the ethernet jack (34½–37½″), which already has a right-angle patch cable in it, so nothing needs reaching later — the plate and its boot just hold the shelf a little off the wall unless the rear panel is notched. At 84″ on an 11⅞″ footprint with a 300 W sub in its bottom bay it wants anchoring to the wall. The 4⅓″ under the bottom shelf clears the cable runs along that wall.

West wall furniture

An 80″ × 24″ door laid flat makes a desk along the west wall (47¾–127¾″ from the north wall, pulled 2¼″ off the south wall), on two file-cabinet legs (backs to the wall, drawers opening east), top ≈30¾″, ≈50″ of knee space between the legs and nothing on top of it. The desk starts ≈8½″ past the active door leaf's swing. Its north end (cabinet + door, ≈31″ tall) is low enough that a panel at the west-wall reflection zone (≈53–63″) still works.

Audio racks under the TV

Two identical racks sit side by side on the north wall directly under the TV, 4″ off the wall to leave room for the cables behind them, meeting on the room's centerline (47.2″ wide together, 55⅜–102⅝″ from the west wall — inside the screen's width at every TV size). The TV's bottom edge has to clear their 30.3″ tops, so the screen sits high — tilt it down toward the MLP. The racks stay below tweeter height, ≈4¼–9″ from the inner Q3s depending on TV size, so the speakers' paths to you stay open, and cable runs to the TV and speakers are short. The sub sits on the east wall in the 84″ bookshelf’s bottom bay (34–49″ from the north wall), facing west, ≈10¾″ off the wall. Both coordinates are now the ones the model tested: its center is ≈41½″ from the north wall, mid-band in the ≈30–50″ window the model called smoothest at the chair (≈10 dB unevenness 30–90 Hz against ≈23 under the door desk, deepest dip ≈−4½ dB), and 10¾″ is the off-wall distance it was actually evaluated at. Measure before settling. The east LS50 clears it by ≈7½–10½″, closest with the 83″; more is available by moving the sub south, at the cost of the smooth band — the model has the deep dip back by ≈60″ from the north wall.

Getting in and out

The active door opens beside the west speaker pair; with the speakers pulled back there's a ≈43″ walkway between them and the chair. Matching 11½″ side tables flank the recliner, backs level with the chair’s when it isn’t reclined (10″ off the south wall); the east one carries the IR senders and headphone amp. The A/C sits west of the chair, ≈3¼ ft from your ears.