Short answer: the Revel W226Be. It ranks #5 of 28 in-wall speakers by sound quality, rated 4.2/5, at $4,949.90; the Miller & Kreisel IW150 ranks #17, rated 3.6/5, and costs $4,998, which makes this an easy call rather than a real tradeoff.
The Revel W226Be is the more accurate, deeper-bass pick. A premium in-wall speaker with twin woofers for deeper bass, a beryllium tweeter, accurate sound and high output. Its measured preference score, a predictor of how neutral it sounds, is 5.51 against 2.88 for the Miller & Kreisel IW150. Its bass reaches about 48.1Hz before falling 3dB, against 95.2Hz for the Miller & Kreisel IW150. Watch for: The measurement comes from Revel, digitized from its published curves, and has no independent second test, so treat the figures as manufacturer supplied.
Why pick the Miller & Kreisel IW150: An in-wall speaker with three tweeters beside two woofers, designed to spread sound evenly across a room from one opening. The tradeoff: Bass is thin: measured -3dB is 95.2Hz and -6dB is 82.0Hz, and Miller & Kreisel rates it only to 80Hz, so a subwoofer is required, and even with a perfect subwoofer the score reaches only 6.32.
Buy the Revel W226Be. It is rated higher for sound quality than the Miller & Kreisel IW150 and costs less, which makes it the one to get unless you need something the other one does better.
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Specifications Side By Side
| Revel W226Be | Miller & Kreisel IW150 | |
|---|---|---|
| Price | $4,949.90 per pair | $4,998 per pair |
| Ranked | #5 of 28 in In-Wall & In-Ceiling Speakers | #17 of 28 in In-Wall & In-Ceiling Speakers |
| Drivers | 2x 6.5” Deep Ceramic Composite (DCC) aluminum cone woofers, 1” beryllium dome tweeter with acoustic lens waveguide (2-way) | 2x 5.25” polypropylene bass/midrange drivers, 3x 1” soft fabric dome tweeters |
| Enclosure | In-wall, 18-36L enclosure (optional W226BEBB back box sold separately) | In-wall |
| Mounting Cutout | 226W x 549H mm | 288W x 331H mm |
| Dimensions | 23”H x 10.2”W x 3.8”D (583 x 259 x 96 mm) (88mm mounting depth) | 13.9”H x 12.2”W (354 x 311 mm) baffle (95mm mounting depth) |
| Weight | 15.7 lbs (7.1 kg) | 18.7 lbs (8.5 kg) |
| Sensitivity | 90dB | 90dB |
| Impedance | 6 ohms nominal (4 ohm minimum) | 4 ohms |
| Power Handling | 50-200W RMS at 4 ohms | 25-400W recommended amplifier power |
| Frequency Response | 43Hz-40kHz (-6dB, manufacturer) | 80Hz-20kHz +/-3dB (manufacturer) |
| Maximum SPL | 110dB (manufacturer specified) | - |
| Crossover Frequency | 2,000Hz | - |
| Bass Extension (-3dB) | 48.1Hz (measured, Revel vendor data on spinorama.org) | 95.2Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-10dB) | 36.4Hz (measured, Revel vendor data on spinorama.org) | 68.7Hz (measured, Erin’s Audio Corner) |
| Spinorama Preference Score | 5.51 | 2.88 |
| Spinorama Preference Score with Perfect Sub | 7.60 | 6.32 |
| DIY Kit | No | No |
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